section 07210 - building insulation

IAD UTILITY PLANT JANUARY 13, 2011 CHILLER WATER PIT WATERPROOFING REPLACEMENT DULLES COOLING TOWERS

SPECIFICATIONS

IAD UTILITY PLANT JANUARY 13, 2011 CHILLER WATER PIT WATERPROOFING REPLACEMENT DULLES COOLING TOWER

TABLE OF CONTENTS TOC - 1

SPECIFICATIONS TABLE OF CONTENTS

SECTION 03 78 00 – PRECAST CONCRETE PAVERS

SECTION 07 13 54 – THERMOPLASTIC SHEET WATERPROOFING (BASE BID)

SECTION 07 13 64 – MECHANICALLY FASTEND THERMOPLASTIC SHEET WATERPROOFING (ALTERNATE # 1 ONLY)

SECTION 07 15 00 – CHEMICAL RESIN INJECTION GROUTING

SECTION 07 62 00 – SHEET METAL FLASHING


PRECAST CONCRETE PAVERS 03 78 00 - 1

SECTION 03 78 00 – PRECAST CONCRETE PAVERS

PART 1 - GENERAL

1.1 RELATED DOCUMENTS

A. Drawings and General provisions of the Contract, including General and Supplementary Conditions and Division - 1 Specification Sections, apply to this Section.

1.2 SUMMARY

A. The Section includes the following:

1. Concrete pavers on pads over waterproofing membrane at tank floors; 2. Tabs, shims, and sealants.

1.3 RELATED WORK SPECIFIED ELSEWHERE

A. Section 07 13 54 – Thermoplastic Sheet Waterproofing

B. Section 07 13 64 – Mechanically Fastened Thermoplastic Sheet Waterproofing

C. Section 07 15 00 - Chemical Resin Injection Grouting

D. Section 07 62 00 - Sheet Metal Flashing

1.4 SUBMITTALS

A. Shop Drawings: Submit showing all components required for the paver application requirement. Shop Drawings shall include plan drawings showing layout of all paver areas and detail drawings showing how the various components of the systems fit together. Include Manufacturer’s literature completely describing all components of the paver systems and giving detailed installation recommendations and instructions.

B. Samples for Verification: Reduced-size units of each type of unit paver indicated; in sets for each color, texture, and pattern specified, showing the full range of variations expected in these characteristics.

C. Qualification Data: For firms and persons specified in “Quality Assurance” Article to demonstrate their capabilities and experience. Include lists of completed projects with project names and addresses, names and addresses of architects and owners, and other information specified.



1.5 QUALITY ASSURANCE

A. Manufacturer Qualifications:

1. All products covered under this Section shall be produced by a single manufacturer unless otherwise specified. Manufacturer shall submit evidence of having not less than fifteen (15) years successful production of this product.

2. The paver manufacturer shall demonstrate, either by proven field performance or the laboratory freeze-thaw test that the paving units have adequate durability if they are to be subjected to a freeze-thaw environment.

a. Satisfactory field performance is indicated when units similar in composition and made with the same manufacturing process as those to be supplied to the purchaser, and do not exhibit objectionable deterioration after at least three years. b. The units used as the basis for proven field performance shall have been exposed to the same general type of environment, temperature range and traffic volume as is contemplated for the units supplied to the purchaser.

B. Subcontractor Qualifications:

1. Subcontractor shall submit evidence of skill and not less than five (5) years specialized experience with this product.

An experienced installer who has completed unit paver installations similar in material, design, and extent to that indicated for this Project and whose work has resulted in construction with a record of successful in-service performance.

C. Pre-Installation Conference: As directed by the COTR.

D. Source Limitations: Obtain each type of unit paver, leveling pads, and support pedestals from one source, as much as possible, and with resources to provide materials and products of consistent quality in appearance and physical properties.

1.6 DELIVERY, STORAGE, AND HANDLING

A. Protect pavers during storage and construction against soiling or contamination from earth and other materials.

1. Cover pavers with plastic or use other packaging materials that will prevent rust marks from steel strapping.

1.7 PROJECT CONDITIONS

A. Do not work during rainy weather and do not build on wet pads.

B. Check substrate assembly of protection board and waterproofing as to soundness, elevation outline and contour. Discrepancies and irregularities shall be brought to the attention of the



COTR. When installation of pavers is started by this Contractor, it is assumed that this Contractor has accepted sub-base as installed. Do not install pavers until all water-tests are accepted.

C. Field Constructed Mock-Up: Prior to beginning production work, construct a mock-up approximately 4-foot by 4-foot for approval by the COTR. Mock-up may be located so as to be incorporated in the work after approval. Mock-up shall be located around intake pipe angles and shall include the specified waterproofing membrane, and the precast paver system.

PART 2 - PRODUCTS

2.1 MANUFACTURERS

A. Available Manufacturers: Subject to compliance with requirements, manufacturers offering products that may be incorporated into the Work include, but not limited to, the following:

1. Precast Concrete Pavers:

a. Hanover Architectural Products, Inc. b. Hastings Pavement Company, Inc. c. Wausau Tile, Inc., Terra-Paving Division

1. Paver Pads:

a. Bison Screwjack Company. b. Hanover Architectural Products, Inc. c. Wausau Tile, Inc., Terra-Paving Division.

B. Paver systems equal in appearance and function and meeting these specifications, will be acceptable when the specified submittals are approved in writing by the COTR prior to bid.

2.2 PAVING SYSTEM

A. The paver system shall include the following components and all other accessory materials required for a complete and proper installation.

1. Precast Concrete Pavers: Paver units shall be 23-13/16” x 23-13/16” x 2-1/2” thick and color/texture to be: a. Surface Type Shot-Blasted Number FDX 1009 and SX 2418 manufactured by Wausau Tile, Inc., Wausau, WI (1-800-388-8728 or 715-359-3121; Fax: 715-359-7456) or approved equal. See paragraph 2.1A for other acceptable manufacturers.

B. Tabs: Terra-Tabs, SBR Rubber; No. 7, ½“thick, 7” square over waterproofing/protection board.

C. Shims: Terra-Shims, No. 7 to match tabs



2.3 PAVER TESTS

A. Portland Cement: ASTM C 150.

B. Aggregates: All aggregates used will be normal weight aggregate, conforming to ASTM C 33.

C. Coloring: Coloring used shall conform to ASTM Standards where applicable.

D. Compressive Strength: At time of delivery to jobsite, average compressive strength shall not be less than 7,000-psi with no individual unit less than 6,500-psi when tested in accordance with ASTM C 140.

E. Flexural Strength: Average flexural strength of paver shall not be less than 600-psi when tested in accordance with ASTM C 293.

F. Center Load: Full size square paver to support 1,750 pounds when supported on four corners.

G. Water Absorption: Water absorption of pavers shall not be greater than 5% according to ASTM C 140.

H. Freeze/Thaw: Specimens, when tested in accordance with ASTM C 67, shall not show breakage, nor have more than 1% loss in dry weight of any individual until when subjected to 50

cycles of freeze/thaw.

I. Sizing: Permissible variations in dimensions shall not differ by more than +/- 1/16” from width, height, length or thickness. Standard units are manufactured with a 3/16” bevel on all four (4) sides of finished surface. Unit shall conform to a true plane and not differ by more than 1/16” in either concave and/or convex warpage.

J. Surface Appearance: All surfaces shall be uniform in overall textural appearance with 3/16” beveled edge.

2.4 SEALANT

A. Perimeter sealant shall be two-part polyurethane sealant. Federal Specification TT-S-00227 (E), Type II, Class A; Sonneborn Sonalastic NP2.

B. Color: As selected from the Manufacturer’s standard color.

C. Primers: As recommended by the Sealant Manufacturer.

D. Foam Backer: Open cell non-gassing polyurethane foam (polyethylene not allowed). Furnish with round edge in thickness required.

E. Solvents and Cleaning Agents: As recommended by the Sealant Manufacturer.

2.5 ACCESSORIES



A. Compressible Foam Filler: Preformed strips complying with ASTM D 1056, Grade 2A1.

B. Paver Pedestals: Manufacturer’s standard styrene-butadiene rubber, HDPE, or polyurethane paver support assembly, including fixed-height, adjustable or stackable pedestals, shims, and spacer tabs for joint spacing of 1/8” to 3/16” (3mm to 5mm).

C. Spacers: Resilient plastic, non-staining to stone, sized to suit joint thicknesses.

PART 3 – EXECUTION

3.1 EXAMINATION

A. Examine areas indicated to receive paving, with Installer present, for compliance with requirements for installation tolerances and other conditions affecting performance. Proceed with

installation only after unsatisfactory conditions have been corrected.

1. Pavers are to be installed over waterproofing, examine waterproofing installation, with waterproofing Installer present, for protection from paving operations. Examine areas where waterproofing system is turned up or flashed against vertical surfaces and horizontal waterproofing. Proceed with installation only after protection is in place.

3.2 PREPARATION

A. Coordinate with COTR the following items:

1. Orientation of paver joints with tank corners, and/or special anchorage metal angle features. 2. Paver layout to minimize irregular shapes and small pieces, which may be unstable to falling water. 3. Set up survey transit to shoot elevations of egress and exit areas to ensure level or uniform pattern around water intakes to accommodate all perimeter conditions. 4. Examine all high and low points on the concrete substrate or waterproofing substrate

to ensure pads have the maximum and minimum dimensions to provide uniform paver support.

5. Ensure pedestals do not require support directly over a drain bowl. 6. Examine pipe penetrations and concrete projections for locations that minimize paver cutting. 7. Oversized pavers shall be used where necessary to minimize small pieces.

3.3 INSTALLATION, GENERAL

A. Inspection of deck and fixed elevation locations. All height or location problems to be corrected before installation.

B. Compare layout of interior tank walls to Shop Drawings or Contract Drawings. All variances of field conditions to Drawings to be reviewed and corrected prior to starting installation.

C. Do not use unit pavers with chips, cracks, voids, and other defects that might cause accelerated deterioration in finished work.



D. Mixed pavers from several pallets or cubes, as they are placed, to produce uniform blend of colors and textures.

E. Cut unit pavers with motor-driven masonry saw equipment to provide clean, sharp, unchipped edges. Cut units to provide pattern indicated and to fit adjoining work neatly. Use full units without cutting where possible. Hammer cutting is not acceptable.

F. Joint Pattern: As indicated on approved shop drawings.

3.4 INSTALLATION OF PAVING UNITS ON PEDESTALS OVER WATERPROOFING

A. Set up surveying instrument to establish paver elevations +/- 1/8”.

B. Use string lines to maintain straight jointing patterns and alignment +/- 1/8” in ten feet.

C. Ensure protection board lays flat on the concrete substrate. Cut panels, which bridge over valleys or bumps in the concrete substrate.

D. Accurately install pads and other accessories to elevations required. Adjust for final level and slope with shims.

E. Loosely lay paving units on pads, maintaining a uniform, open joint width. Tightly seat units against spacers to eliminate lateral movement or drift of paving assembly. Align joint patterns parallel in each direction.

1. Lay out units to avoid less than half-width units at perimeter or other terminations.

F. Install paving units to not vary more than 1/16” (1.5mm) in elevation between adjacent units.

G. After paver and pedestal installation have been installed, examine completed installation for creep and deflection movement. Adjust or shim pavers as required to ensure uniform substrate.

3.5 TOLERANCES

A. Maximum of 1/8” height variation between adjacent pavers.

B. Individual pavers shall not vary more than 1/8” from level across width of the paver.

C. Paved areas shall not vary more than ¼” from level in a distance of ten feet measured at any location

and in any direction.

D. Joints to be 3/16” or 1/8”.

3.6 CLEANING AND PROTECTION



A. Remove and replace unit pavers that are loose, chipped, broken, or otherwise damaged or that do not match adjoining units as intended. Provide new units to match adjoining units and install in same manner as original units, with same joint treatment.

B. Cleaning: Remove excess dust from cutting exposed paver surfaces; wash and scrub clean.

C. Clean paving after setting is complete. Use procedures recommended by fabricator for types of application.

END OF SECTION 03 78 00



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IAD UTILITY PLANT JANUARY 13. 2011 CHILLER WATERPIT WATERPROOFING REPLACEMENT DULLES COOLING TOWER

THERMOPLASTIC SHEET WATERPROOFING (BASE BID) 07 13 54 - 1

SECTION 07 13 54 - THERMOPLASTIC SHEET WATERPROOFING (BASE BID) PART 1 - GENERAL


A. Drawings, Contract Provisions, Special Provisions, Supplementary provisions, and Division 1 Specification Sections apply to this Section.

1.2 SUMMARY

A. This section includes all Work required to complete, as indicated by the Contract Documents, and furnish all supplementary items necessary for the proper installation of the waterproofing system.

B. Work Included:

1. Principal work in this Section shall include waterproofing in the following areas:

a. CTEM (Coal Tar Elastomeric Membrane), thermoplastic sheet membrane waterproofing on all interior concrete tank floors and spillway bases, as denoted WP-1.

b. CTEM, thermoplastic sheet membrane waterproofing at interior concrete tank walls, around overhead beams which support the roof, under spillways and on spillway sides, and other areas as denoted on the plans and as denoted as WP-2.

1.3 DESCRIPTION

A. Scope:

To install thermoplastic membrane waterproofing system and anchor strips (termination bar in all seam overlaps) with any associated protection layers and other items for vertical walls and horizontal slabs at the interior surfaces of the four concrete water tanks.

The work includes but is not necessarily limited to the following:

1. Substrate Preparation; 2. Waterproofing Membrane; 3. Membrane Flashings; 4. Metal Flashings, Sheet Metal, Clamping rings, Angles, Anchor bolts; 5. Protective Layer(s) (Protection Board on Floors); 6. Placement of 2.0 inch thick concrete pavers; 7. Monitoring the Installation of paver/sheet metal covering layers; 8. Sealants and Adhesives; 9. PVC Pipe Monitoring Tubes;



10. Termination Bars; 11. Anchor Adhesive and Strips; 12. Testing; 13. Preparation of all details required; and 14. Working in confined spaces.


A. Submittals – Division 1 Sections.

B. Precast Concrete Pavers, Section 03 78 00

C. Chemical Resin Injection Grouting, Section 07 15 00

D. Sheet Metal Flashing, Section 07 62 00

1.5 DEFINITIONS

A. CTEM: Coal Tar Elastomeric Membrane.

B. MMWIS: Membrane Manufacturer Waterproofing Inspection Service.

C. Waterproofing: System consisting of 60 and 90 mil CTEM layers on floors, and 90 mil layer on walls, with 75 mil corner flashing, End Lap Splice Strip, and sheet terminations to prevent intrusion of water through the interior of the finished concrete holding tank structures.

D. Membrane: Synthetic, 90 mil, CTEM sheet with adhesive backing, waterproofing membrane specifically formulated for sealing and containing water in concrete tank structures.

E. Double Weld (Wedge Weld): Machine welded seams achieved by use of automatic hot wedge welding equipment.

F. Single Weld: Hand welded seam consisting of a tack weld, a thin continuous weld and a rolled end weld. Single seams are sealed with encapsulation strip at membrane welds where scrim is exposed.

G. Extrusion Weld: The introduction of a ribbon of molten resin along the edge of two overlapping sheets creating a homogenous bond between sheets and sealing edge of seam if scrim reinforcement is exposed.

H. Encapsulation Strip: A strip of unreinforced membrane that placed and welded over a hand welded or wedge weld seam to reduce the potential of voids created in the hand welding process and also to encapsulate the cut edge (scrim exposed) of the membrane. Encapsulation strip means the same as “strip in”.



I. Membrane Protection Layer: A layer specifically designed to completely cover the waterproofing membrane to protect it from damage prior to concrete paver placement, and other construction activities potentially detrimental to the integrity of the membrane.

J. Membrane Protection Patch: A 60-mil thick membrane layer specifically designed to protect the CTEM membrane patch from damage caused by the remedial monitoring pipes and construction activities potentially detrimental to the integrity of the membrane.

K. Protective Concrete: Concrete Pavers placed on tank floor slab waterproofing to prevent damage.

L. Control and Monitoring Pipes: Pipes typically installed near water barrier intersections and concrete tank construction joints to control watertightness of individual membrane sections. If leakage should occur, the pipes are used for remedial air testing, specifically located at certain lifts of CTEM sheet membrane.

M. Hydrophilic Waterstop: Polymer swelling gasket strip applied in connection with termination bars at waterproofing terminations and sectioning.

N. Structural Adhesive: A one -part urethane composite that provides for adhesion of waterproofing membrane to concrete substrates at termination bar placement.

O. Stainless Steel Band: Grade 316, stainless steel banding with screw clamp to help ensure watertight connection between mechanical penetrations and waterproofing membrane.

P. Temporary Protection Board: 3/8-inch thick sheets of pressure treated plywood. To be used temporarily over concrete substrates and structure walls, and at construction joints for protection of membrane waterproofing system and components.

Q. Surface Acceptance form: Form provided by Contractor and Membrane Manufacturer to document acceptance of the concrete substrate prior to membrane application.

R. QA/QC Form: Form provided by Membrane Manufacturer Inspector, which accepts completed installation prior to and after concrete paver installation and/or overburden placement.

S. Tensiometer: Calibrated, electric testing device to measure shear and peel strengths of one inch wide coupons of membrane.

1.6 QUALITY ASSURANCE AND PERFORMANCE REQUIREMENTS

A. This waterproofing system shall be applied only by a waterproofing Applicator authorized by Manufacturer prior to bid. Waterproofing Applicator shall have performed at least three tank linings in confined space environments of 10,000 square feet each, or at least one tank of 30,000 square feet using one of the specified systems. Waterproofing contractors not meeting these minimum requirements shall be subject to rejection and deemed non-responsive bidders.



B. Installation of leveling layer, waterproofing membrane, flashing membrane, membrane protection layers, and monitoring tubes shall be the responsibility of the membrane Applicator to ensure undivided responsibility.

C. Obtain primary waterproofing materials, membrane and flashings, from a single manufacturer with not less than ten (10) years of successful experience in waterproofing application. Provide other system components only as approved by system Manufacturer.

D. Manufacturer’s twenty (20) year Labor and Material Warranty is required for the project, the waterproofing Applicator shall arrange with Manufacturer to have the services of a full time dedicated quality monitor. The Applicator shall include all costs for the monitor, including travel, per-diem, daily inspection fees and reimbursable expenses in his bid price.

E. Pre-construction conference to be held with the Authority, COTR, Applicator’s field superintendent, waterproofing foreman, Manufacturer’s representative, and other involved trades to discuss waterproofing practices applicable to this project.

F. There shall be no deviation made from the contract specifications or the approved shop drawings without prior written approval by the Authority, COTR, and/or design professional, and Manufacturer.

H. Membrane testing procedures shall be coordinated with the Authority, after all work is complete and EFVM testing has been performed. Electric Field Vector Mapping (EFVM) – low voltage electronic leak detection shall be performed by a qualified testing agency. See Section 3.16.

I. All work shall be completed by trained and authorized field personnel.

J. Supervision and Training of Personnel:

1. Execute all installation and testing under the direct supervision of an individual with minimum five (5) years experience in the installation of waterproofing systems for structures using membrane materials as specified.

2. Provide trained personnel for installation and testing operations. The installer must have a minimum of five (5) years of experience in the installation of flexible membranes in waterproofing installations. The proficiency of each welder shall be demonstrated in the field for approval by the COTR.

K. ASTM Standards: Material data obtained according to the following ASTM Standards:

1. ASTM E 96: Test Method for Water Vapor Transmission. 2. ASTM D 374: Test Method for Thickness of Solid Electrical Insulation. 3. ASTM D 412: Test Method for Elongation. 4. ASTM D 412: Test Method for Tensile Strength. 5. ASTM D 471: Test Method for Water Absorption. 6. ASTM D 568: Test Method for Rate of Burning and/or Extent and Time of Burning

of Flexible Plastics in a Vertical Position. 7. ASTM D 571: Test Method for Breaking Strength. 8. ASTM D 624: Test Method for Tear Strength. 9. ASTM D 624/C:Test Method for Tear Resistance. 10. ASTM D 638: Test Method of Tensile Properties of Plastics.



11. ASTM D 638: Test Method for Seam Strength. 12. ASTM D 816: Test Method for Weather Resistance. 13. ASTM D 1148: Test Method for Ozone Resistance. 14. ASTM D 1204: Test Method for Impermeability. 15. ASTM D 1593: Specification for Non-Rigid Vinyl Chloride Plastic Film and

Sheeting. 16. ASTM D 1621: (MOD.) Compressive Properties of Rigid Cellular Plastics. 17. ASTM D 1777: Method for Measuring Thickness of Textile Materials. 18. ASTM D 1785: Specification for Poly Vinyl Chloride (PVC) Plastic Pipe, Schedules

40, 80, and 120. 19. ASTM D 2137: Test Method for Low Temperature Flexibility.

L. Products:

1. Supply and install only products specifically designed and manufactured for this type of construction.

2. Select manufacturers of accessory products who are regularly engaged in the production of similar materials for underground and tank structures.

M. The Applicator must submit a list of jobs performed by his employees and supervisors similar to the proposed system being bid.

N. Manufacturer’s Performance:

1. Shall have documented experience of a minimum of 500,000 square feet. 2. No water leakage shall be acceptable and the structures shall be watertight. 3. The waterproofing products are to be made by: a) nationally-recognized

manufacturer specializing in waterproofing systems; b) have been manufactured for at least five (5) years; c) have been used successfully on projects similar to this; and d) are appropriate for the substrate, treated water, hydrostatic pressure, and conditions expected in this Contract.

O. Source Quality Control:

1. Membrane Manufacturer shall test each run of waterproofing membrane per their quality control plan.

2. Each roll of membrane material supplied to the site shall be clearly marked identifying the run in which the membrane was made.

1.7 SUBMITTALS

A. The Applicator shall submit to the COTR and/or design professional the following:

1. CAD Shop drawings and details that have been stamped and accepted by Waterproofing Manufacturer prior to submittal;

2. Specimen copy of Manufacturer’s warranty (attached); 3. Specimen copy of Applicator’s warranty (attached); 4. Resume of waterproofing installation supervisor; 5. The following items shall be submitted as work progresses from “Contractor’s

Quality Control Requirements”:



a. Written reports from Membrane Manufacturer’s Inspector; b. Results of portable tensiometer testing of seams; c. Surface Acceptance Form; d. EFVM test results; e. Waterproofing Installation Acceptance Form; and f. Pre-Installation notes and agreements.

6. Letter from Manufacturer certifying that the contractor is an approved applicator in good standing. The Manufacturer and subcontractor shall provide the following:

a. Letter stating contractor has had ten (10) years recent experience installing

membranes below-grade or similar to that being bid; and b. The contractor has performed at least ten (10) jobs and 250,000 square feet

of membrane similar to that being bid, and meets the requirements of 1.6 A. c. Clamping ring torque procedures and torque values to ensure water-tightness.

7. Confined Space Entry and Work Plan. Show evidence all tradesmen have been trained and certified to work in such environments, all workers shall be trained and carry OSHA 30 cards.

B. Product Data / Catalogue Cuts / MSDS Sheets / Material Samples:

1. CTEM Membrane(s) Sheet(s); 2. Membrane Protective Layer; 3. Monitoring Pipes; 4. Hydrophilic Waterstop; 5. Structural Sealant; 6. 316 Stainless Steel Band Clamps; 7. Pultruded or Stainless Steel Termination Bar for in-seam anchorage; 8. Grade 316 Stainless Steel Termination Bar and Anchors; 9. 60 mil Leveling Layer at Floors; 10. Encapsulation Strip (if required by Manufacturer); 11. EFVM Testing; 12. Adhesives; 13. Adhesive Primer; 14. Cleaning Solution at seams; 15. Torque Requirements for Clamping Rings; and 16. Grade 316, stainless steel-anchor bolts, nuts, flanges, and metal angles.

C. Field Samples:

1. Hot Air weld samples, 12 inches long, from each welding machine prior to the start of daily shift.

2. Prepare and submit field samples prior to seam welding. 3. Perform trial welds each day prior to start of Work.

D. Shop Drawings shall be submitted a minimum thirty (30) days prior to start of work to the COTR for approval. Do not proceed with waterproofing installation without approved shop drawings. Submit plans, sections, and details created in CAD of the following:



1. Scope of Work, including elevations of tank wall monitoring pipes; 2. Sequence of waterproofing installation relative to construction sequence, including

detailed installation procedure. 3. Sheet layout of membrane splice locations, termination bar locations, and type of

welds. 4. Build-up of layered waterproofing at floor and on inside face of cast-in-place tank

walls. 5. Layout and location of remedial monitoring pipes at wall and floor areas. 6. Details of:

a. Waterproofing terminations at floors and walls; b. Waterproofing at corners, change of elevations, and mechanical penetrations; c. Overlaps of CTEM membrane on walls, with or without embedded

termination bar; and d. Clamping ring flanges, bolt layouts, and torque requirements.

E. Waterproofing protection plan/narrative and details describing the intended procedures to prevent damage during construction operations such as, installation of formwork, reinforcement and embedded items, placement of concrete protection slab. The following items shall be addressed:

1. Storage. 2. Handling. 3. Welding. 4. Attachment. 5. Smoothness of surfaces. 6. Testing. 7. Installation equipment. 8. Detection of physical damage. 9. Methods of local repair.

F. Installer certification showing that the Installer (list of approved employees) is approved for the installation work by the system supplier.

1.8 PRODUCT DELIVERY, STORAGE, AND HANDLING

A. All products delivered to the job site shall be in the original unopened containers or wrappings.

B. Handle all materials to prevent damage. All materials shall be placed on pallets fully protected from moisture with canvas tarpaulins.

C. Membrane rolls shall be stored “standing up” on pallets and fully protected from moisture with canvas tarpaulins.

D. Primers and adhesives shall be stored at temperatures above 40°F (5°C) and less than 90˚ F (32˚C).



E. All flammable materials, where and if allowed on site, shall be stored in a cool dry area away from sparks and open flames. Follow precautions outlined on container or supplied by the material manufacturer/supplier.

F. Any materials which the COTR and/or Manufacturer determine to be damaged are to be removed from the job site and replaced at no cost to the Authority.

1.9 JOB CONDITIONS

A. Proceed with waterproofing membrane installation only after substrate preparation is complete. All existing loose and un-bonded membrane shall be removed prior to primer application. Manufacturer, COTR, design professional and the waterproofing applicator must accept substrate before proceeding with membrane installation. Contractor to include all concrete surface preparation around clamping ring areas to ensure flatness and acceptability of ring’s performance.

B. Substrate must be dry, clean and smooth. Do not work in rain or snow or adverse weather conditions. Severe temperatures, moisture and humidity may affect the installation of products during construction. Comply with applicable installation requirements for all components.

C. Only install new waterproofing that can be made weather-tight each day including all flashing work.

D. The Applicator shall take precautions that storage and/or application of materials and/or equipment does not overload the deck or building structure.

E. All new and temporary construction, including equipment and accessories, shall be secured in such a manner, at all times, as to preclude wind blow-off or damage.

F. Temporary waterstops shall be installed at the end of each day’s work and shall be removed before proceeding with the next day’s work. Waterstops shall be compatible with all materials and shall not emit dangerous or incompatible fumes.

G. The Applicator is cautioned that certain membranes are incompatible with oils, creosote and penta-based materials. Such materials shall not come in contact with the waterproofing membrane at any time. If such contact occurs, the material shall be cut-out and discarded. The Applicator should consult the Manufacturer with respect to material compatibility, precautions and recommendations.

H. Arrange work sequence to avoid use of newly-constructed waterproofing for storage, walking surface, and equipment movement. Where such access is absolutely required, the Applicator shall provide all necessary protection and barriers to segregate the work area and to prevent damage to adjacent areas. Provide HDPE protection and felt separation sheet (or CTEM protection and felt separation sheet) shall be provided for all waterproofing areas which receive traffic during construction. Any damage which occurs to the waterproofing membrane and/or system is to be brought to the attention of the COTR and/or design professional and Manufacturer. All damage is to be repaired according to Manufacturer recommendations. The party responsible for damage shall bear the cost of repairs.



I. Prior to and during application, all dirt, debris and dust shall be removed from surfaces, either by vacuuming, sweeping, blowing with compressed air, pressure washing and/or similar methods.

J. All waterproofing materials, flashings, and metal work removed for construction shall be immediately taken off the site to a legal dumping area authorized to receive such materials.

K. If any unusual or concealed condition is discovered, stop work and notify the COTR, and/or design professional and Manufacturer immediately, in writing.

L. Liquid materials such as solvents and adhesives shall be stored and used away from open flames, sparks and excessive heat, follow OSHA requirements.

M. Contaminants, such as grease, fats, oils, and solvents, shall not be allowed to come into direct contact with the waterproofing membrane. Any such contact shall be reported to Manufacturer.

N. Site cleanup, including both interior and exterior building areas below or adjacent to, or in any way affected by the construction, shall be complete and to the COTR’s satisfaction.

O. All drains, electrical and mechanical penetrations through the membrane must be structurally stable and flashed prior to sheet installation. Ensure concrete area at clamping rings is flat, uniform, and suitable for termination around pipes. Use six foot wide sheet around clamping ring areas to avoid sheet seam overlaps under the bolted flange.

P. Verify that all drain lines are unblocked before starting work; report in writing any such blockage to the COTR and Membrane Manufacturer.

Q. All areas stained, dirtied, and discolored or otherwise damaged due to the work shall be cleaned, restored, and replaced as required.

R. The Applicator should take necessary precautions when using adhesives around air in-takes. The smell of the adhesive could be a disturbance to the Authority and occupants. It is the Applicator’s responsibility to notify the Authority and take the proper precautions.

1.10 SEQUENCING OF THE WORK

A. Coordinate Work in conjunction with the other trades by the timely performance of the work, including installation of sheet metal and protection layer(s). Coordinate with other trades to avoid damage to waterproofing membrane.

1. Do not proceed with installation of protection layers and concrete paver protective cover over the completed sections of the waterproofing without the acceptance of the COTR, design professional, and Manufacturer.

2. Membrane tests of installed tank waterproofing membrane shall be successfully completed before proceeding with protection layers. Schedule tests promptly to allow timely installation of protection layers (See Part 4, Item 4.2E).

3. Drains: Coordinate with other contractors, the installation of drains as shown on the Drawings, including flashing and associated waterproofing work. Ensure clamping rings of drains are flush with the concrete surface.



B. Waterproofing applicator or installer shall review electrical and mechanical plans and schematics prior to bid and to starting shop drawings, to determine the following:

1. Water, sewer, gas, telecommunication lines, pipes, and cables which may penetrate

the membrane; and 2. Floor drains, plumbing vent pipes, grounding wires, electrical conduit and general

utility access which may penetrate the membrane.

C. Waterproofing applicator or installer shall coordinate placement with other contractors any penetrations through the completed waterproofing membrane assembly. Ensure the following items are coordinated:

1. Clusters of electrical conduit are separated by at least four inches clear spacing in all directions; and

2. Duct banks shall have clear spacing around each pipe equal to two times the diameter of said pipe.

1.11 WARRANTIES AND MAINTENANCE AGREEMENT

A. Subcontractor’s Warranty: Supply the Authority with a minimum of five (5) year workmanship warranty for the membrane (CTEM) work. The obligation of the warranty shall run directly to the Authority with a copy to the Membrane Manufacturer and Contractor. Form(s) included at the end of this Section and are to be submitted without modification.

B. Manufacturer’s Warranty: Provide a Manufacturer’s labor and material warranty to the Authority at the successful completion of the Project. The Waterproofing Membrane Manufacturer shall warrant to the Authority the repair of any leaks in the waterproofing membrane resulting from defects in the membrane or workmanship for a period of twenty (20) years. Form(s) included at the end of this Section and are to be submitted without modification.

C. Maintenance Agreement: Installer shall provide to the Authority a yearly site inspection of the membrane and flashing at no additional cost to the Authority for five years after installation. Inspections must be performed by Hyload certified installer. Proof of certification must be submitted to Authority. At the end of five years, the Authority shall have the option to pay subcontractor for annual site inspection of membrane and flashing. The Authority and Installer shall coordinate annual site inspection with the Facilities Operational Cycle. A report shall be generated at the conclusion of each annual site inspection, and be copied to the Manufacturer. Each site inspection will require multiple visits as not all sumps can be removed from service concurrently.

PART 2 - PRODUCTS

2.1 WATERPROOFING MEMBRANE

A. The manufacturer of the thermoplastic waterproofing membrane system shall have a track record of producing and marketing a composite CTEM sheet system for waterproofing



applications for at least ten (10) years. Product must be UV stable and contain adequate biocide. Subject to this and other technical requirements, provide products of the following:

1. Hyload, Inc., 9976 Rittman Road, Wadsworth, OH. 44281, or 2. Marseal, MRC, Inc. with equal products.

2.2 WATERPROOFING PRODUCTS

A. Accepted waterproofing membrane manufacturer and their products:

1. Hyload Waterproofing Systems, HyBase SAM and Hyload WS (Self-Adhering CTEM Base Ply and CTEM Weathering Ply), or

2. Marseal, with equal products.

B. Accepted VOC compliant primer:

1. Hyload Waterproofing Systems, HyBond Neoprene Primer, or equal.

C. Accepted sealant:

1. Hyload Waterproofing Systems, Structural Sealant, or equal.

2.3 WATERPROOFING MEMBRANE SYSTEM

A. Primer:

1. Primer: Quick-drying primer for preparation of substrate to be adhered to. Physical properties per manufacturer’s Tech Data.

B. Base Ply:

1. Base Ply Membrane: HyBase SAM CTEM polyester fiber reinforced self-adhering base ply, nominal thickness 75 mil (60 mil membrane with 15 mil factory applied Hyload SBEES adhesive plus protective release film). Physical properties per manufacturer’s Tech Data.

2. Base Ply Membrane: HyBase SAM CTEM polyester fiber reinforced self-adhering base ply, nominal thickness 60 mil (45 mil membrane with 15 mil factory applied Hyload SBEES adhesive plus protective release film). Physical properties per manufacturer’s Tech Data.

C. Weathering Ply:

1. Hyload WS self-adhering coal-tar high performance elastomeric membrane (CTEM), incorporating DuPont “Elvaloy KEE” (Ketone Ethylene Ester) modified using coal-tar pitch and reinforced with polyester fibers. Nominal thickness 90 mils - (75 mil membrane with 15 mil factory applied Hyload SBEES adhesive plus protective release film). A selvage area (area devoid of adhesives) shall be left on one side of the membrane, along its entire length, for hot air welding during installation. Physical properties per manufacturer’s Tech Data.



D. Membrane Flashing:

1. Same thickness as that specified for CTEM Waterproofing Membrane.

E. Flashing:

1. Manufacturers shall provide non-adhesive backed flashing sheets as required in the thickness of 60 mils.

F. Prefabricated Details:

1. Inside/outside pre-molded corners, same mileage as membrane or a minimum of 60 mils.

G. Accessories:

1. Hyload double-sided tape (DSA tape) for sealing over termination bars, and end of laps of waterproofing membrane and sheet metal flanges.

2. End Lap Splice Strip (60 mil) – 6" x 50' roll of membrane flashing with two (2) inch SBEES adhesive backing in the center of the roll, for hot air welding at end laps of waterproofing membrane and of various laps of membrane flashing.

3. Hyload 150E – 60 mil membrane without SBEES adhesive backing for hot air welding at angle changes.

4. Hyload Structural Sealant – a multi-purpose sealant; non-slump, moisture-cure, non-sag, mastic with no volatile organic contents (VOC's).

5. Specialized hot air welding equipment for permanent and watertight sealing of laps in waterproofing membrane and in membrane flashing.

6. Exposed and/or buried termination bar and anchors – stainless steel bar, Grade 316, with holes at eight (8) inches on center.

7. PVC coated metal, heat weldable sheet metal capable of being formed into a variety of shapes and profiles. PVC coated metal shall be Grade 316 stainless steel sheet metal with a PVC membrane laminated on one side.

8. Aluminum Tape, a two (2) inch (50 mm) wide pressure-sensitive aluminum tape used as a bond-breaker under the cover-strip at PVC clad metal -SS joints.

9. Zamac Nailins Fasteners, ¼ x 1–¼ inch (6.3 x 31.7 mm) fasteners for attachment of membrane, flashing, termination bars, and expansion joints to concrete with plastic sheaths and stainless steel pins.

10. Other materials/products and equipment as necessary for complete Work. 11. In seam termination bar shall be: either 1) Grade 316 stainless steel bar or 2)

pultruded fiberglass bars, both with holes at eight (8) inches on center and per manufacturer’s requirements.

H. Miscellaneous Fasteners and Anchors: All fasteners shall be of the same type as the metal being secured. In general all fasteners, anchors, nails, and straps, shall be Grade 316 stainless steel. Fasteners are to be compatible with materials and other metals in contact with fasteners. All fasteners and anchors shall have a minimum embedment of 1-1/4 inches (31.7 mm) and shall be approved for such use by the fastener manufacturer. Fasteners for attachment of metal to concrete shall be all-metal expansion type fasteners. All fasteners shall meet Factory Mutual Standard 4470 for corrosion resistance.



I. Control and Monitoring Pipes: one (1) inch nominal pipe size polyvinyl chloride (PVC) pipe schedule 40; ASTM D 1785, length as required based on concrete thickness. Provide with inside threaded pipe coupling and removable plug.

J. Hydrophilic Waterstop: Polymer-based seal, designed to undergo controlled expansion in the presence of moisture in combination with a grouting pipe. Type Combiject Expansion Waterstop or approved equivalent. The waterstop shall be defined as follows:

1. Size: two (2) inch wide by ¼-inch thick; 2. Perform in saltwater and shall have a water pressure resistance of two Bar. 3. Compatibility with membrane.

K. Temporary Protection Board: Board shall be 3/8 inch thick sheets of pressure treated plywood. Provide adhesive or tape recommended and approved by the Membrane Manufacturer.

L. Concrete Paver Protection Layer, as specified in Section 03 78 00, "Precast Concrete Pavers," thickness shall be 2.0 inches or as shown on the Contract Drawings.

2.4 MISCELLANEOUS

A. Sealants in Contact with CTEM Waterproofing Product shall be approved by Manufacturer.

B. Temporary Seal-Off: Sealants and techniques approved by Manufacturer.

C. Hose Clamp: Grade 316 stainless steel, for use at pipe or conduit penetrations.

D. Structural Mortar: Renderoc HBA accelerated setting, low slump mortar manufactured by Fosroc. Install in accordance with Manufacturer’s published recommendations for concrete and substrate repairs.

E. Pipe Flanges:

1. Pipe flanges (clamping rings) shall be installed on one side of the waterproofing membrane penetrated by the piping and shall develop sufficient clamping force on the ring/flange to provide a hydrostatic, resistant seal.

2. Pipe flanges (clamping rings) shall be fabricated to prevent damage to the waterproofing membrane following fastening into the concrete walls.

3. Pipe flanges (clamping rings) shall be fabricated from Grade 316 stainless steel. Fasteners, anchors, bolts, nuts, and other hardware shall be Grade 316, stainless steel conforming to ASTM F 593.

4. Bonded neoprene washers/gaskets or uncured sheet membrane, or other such devices acceptable to the COTR, capable of ensuring the prevention of intrusion of water under hydrostatic pressure along the fasteners shall be used.

5. Clamping ring torque procedures and criteria shall be obtained from the manufacturer prior to tightening.

F. Metal Angles:



1. Metal angles, anchorage bolts, nuts and washers shall be fabricated from Grade 316, stainless steel.

2. Anchorage bolts, nuts, washers, shall be torqued per manufacturer’s requirements.

PART 3 - EXECUTION

3.1 GENERAL

A. The waterproofing Applicator shall coordinate the installation so that each area is made weather-tight at the end of each work period or onset of inclement weather.

3.2 EXAMINATION

A. Examine all surfaces scheduled to receive waterproofing membrane and flashing for roughness, contaminants, unsound structural substrates and existing membrane, or other conditions that may impair the waterproofing application. Notify the COTR in writing of any such conditions; do not commence work until all defects are remedied. Starting application in a given area shall constitute acceptance of substrate.

B. Contractor to assume 10 percent of existing waterproofing liner in each tank shall be removed for bidding purposes. The existing membrane is HLM 5000, fluid applied membrane. Remove all existing membrane which is loose, blistered, or otherwise not acceptable to the Manufacturer for overlayment by the new membrane liner; it shall be removed and disposed of to a legal dump site.

C. Contractor to assume for bidding purposes that 200 square feet of concrete surface preparation is required to flush out forming irregularities, irregular corners, and form fin lines.

D. Contractor to assume for bidding purposes that 5 cubic feet of latex modified patching material will be required for filling voids, and surface irregularities.

E. Do not allow oil in any form to contact the thermoplastic membrane or other system components.

3.3 SUBSTRATE PREPARATION

A. General:

1. Prepare surface according to the criteria specified herein, and per Manufacturer’s requirements.

2. All surfaces shall be free of oils, grease and petrochemicals, which may have occurred from other trades work, and previous or prior construction activities.

3. All patches shall be cured a minimum of fourteen (14) days and be 2,500-psi in compressive strength before application of waterproofing system unless otherwise approved by manufacturer.

B. At Structural Concrete:



1. Install 3/4 inch by 3/4 inch sealant chamfer at all inside corners unless otherwise shown.

2. Provide a smooth finish equivalent to a smooth float finish or better. 3. Repair all joints, offsets, voids, cracks and spalled areas which are greater than 1/8

inch in width or depth with quick setting grout, mortar or approved equal. 4. Tie wire, nail heads, and other projecting objects shall be ground flush with the

existing concrete prior to waterproofing installation. 5. Form tie-holes shall be plugged flush with the concrete substrate. 6. Fins and projections greater than 1/32 inch shall be scrapped, chiseled-down,

chipped, or other-wise ground flush with the substrate per Manufacturer’s approved techniques.

3.4 PRECAUTIONS FOR WORKING IN TANKS

A. The adhesives, solvents, primers, and sealants contain ingredients that can be flammable. Use these products only in fully ventilated areas. Avoid breathing vapor and do not use near heat, sparks, or open flames. Do not smoke while using these materials or in areas near them. Tanks are considered confined space environments. Perform work per OSHA and project specific safety requirements.

B. Read and follow Material Safety Data Sheets (MSDS) and observe and exercise all cautions indicated on containers and package labels.

C. Comply with Manufacturer's requirements regarding permitted ranges of ambient temperature and relative humidity during installation of the membrane system.

3.5 INSTALLATION OF PRIMER

A. Prime substrate with quick drying primer. Primer shall be a neoprene modified base. Apply by roller, brush or spray at manufacturer's recommended rate (1 to 1.5 gal per square). The primer should be dry to touch before application of base ply membrane.

3.6 INSTALLATION OF 60 MIL, BASE PLY MEMBRANE ON FLOORS

A. Inspect the surface of the concrete deck prior to installation of base ply membrane. The surface shall be clean and smooth with no excessive roughness, and/or contamination.

B. Install over the primed substrate with self-adhering base ply membrane in accordance with manufacturers' installation instructions and providing four (4) inch side laps and six (6) inch end laps.

C. Install base ply membrane in shingle fashion starting at the low point of the structure.

D. Base ply membrane shall be laid so that the waterproofing is "picture framed", i.e. a width of base ply membrane shall be laid parallel to the building edge of the area being waterproofed.



E. At perimeters, where structural floor abuts any vertical surface (i.e., tank walls, concrete wall, equipment curb, etc.) terminate base ply membrane into sealant at horizontal-to-vertical transition.

F. At other penetrations (i.e. plumbing vent pipes, clamping rings) terminate the base ply membrane eight inches from metal surface.

G. Broom and roll the base ply membrane immediately after laying it, using a semi-soft bristle broom and 70 lb. linoleum roller or water filled garden roller. Ensure the base ply membrane is secured firmly into place. Perform one (1) inch wide; pull tests, 90 degrees to substrate, to ensure minimum adhesion of five (5) pounds per inch, and measured by an approved meter.

H. Provide plywood protection over installed base ply membrane in areas of foot or equipment traffic.

3.7 INSTALLATION OF 90 MIL CTEM WEATHERING PLY MEMBRANE ON FLOORS

A. Install self-adhering weathering ply membrane in accordance with manufacturer's installation instruction(s) and with three (3) inch side laps. Ensure seam overlaps adequately cover adjacent sheet. End laps of the weathering ply membrane shall be lapped nine (9) inches. If possible, lay the end laps so that laps are in line.

B. Side (seam) laps shall be machine welded with hot air equipment.

C. Complete the end laps by using membrane flashing on end laps. The procedure is as follows: Strip end laps with six (6) inch wide strips of hot air welding membrane flashing (60 mils), centering these strips over the end edge of the lapping membrane and extending these strips a minimum three (3) inches over adjacent sheet of membrane.

D. Side laps and end laps of the weathering ply membrane shall be offset from laps of the base ply membrane.

E. Install weathering ply membrane in shingle fashion starting at the low point of the structure.

F. At perimeter, where floor abuts any vertical surface (i.e. tank walls, equipment curb, etc.), turn up the weathering ply membrane for a distance equal to eight (8) inches above the previously installed membrane.

G. At other penetrations, turn up the membrane and seal it watertight to the item penetrating the membrane with S.S. clamping ring, or termination bar.

H. Broom and roll membrane immediately after laying it, using a semi-soft, bristle, broom and 70 lb. linoleum roller or water filled lawn roller. Ensure the membrane is firmly secured into place.

I. Provide plywood protection, over installed membrane, in areas of heavy foot or equipment traffic.

3.8 INSTALLATION OF CTEM MEMBRANE FLASHING



A. Prime substrate which is going to be covered with CTEM membrane flashing (except surfaces of waterproofing membrane to which the laps of the membrane flashing are to be hot air welded). Primer shall be neoprene modified base. Apply by brush, roller, or spray at Manufacturer's recommended rate. The primer should be dry to touch before application of CTEM membrane flashing.

B. Install self-adhering CTEM flashing, with side and end laps, all per manufacturer's installation instruction(s).

C. Install CTEM membrane flashing in minimum two (2) successive layers. All laps shall be hot air welded and laps of second layer shall be offset from laps of the first layer.

D. Provide hot air welding between membrane flashing and membrane where flashing laps over waterproofing membrane. The welded seam of the top layer of membrane flashing shall overlap by four (4) inches the welded seam of the preceding layer of membrane flashing.

E. Membrane flashing at walls shall extend up for a distance of minimum nine (9) inches above the concrete tank floor. Secure the top edge of membrane flashing to wall using termination bar and seal it watertight with non-curing sealant.

F. At drains pay particular attention to watertightness of installation. Secure membrane flashing with clamping ring at drain and with hot air welding to waterproofing membrane. Installation shall guard against water back-up entry into the waterproofing system.

G. At other penetrations (i.e. plumbing pipes) turn up membrane flashing for a distance of twelve (12) inches and secure the top edge with stainless steel clamping strap or ring (as applicable). Seal watertight with sealant the top edge of the membrane flashing.

H. At curbs of equipment beams and appurtenances (i.e. curbs of mechanical units) turn up membrane flashing against the sides of curb and extend it over top surface of curb wall. Secure the membrane flashing to the top surface of curb and protect it with metal cap flashing.

I. At equipment supports (i.e. curbs supporting mechanical vents or units) wrap all surfaces of supports with membrane flashing and protect the top surface with metal cap flashing.

J. All membrane flashing plies shall be installed in the "STRAPPED METHOD", meaning that the horizontal run of the flashing shall be no wider than the roll of membrane (36" to 39"). Weld end lap splice strip to base of membrane flashing system.

3.9 THERMOPLASTIC WATERPROOFING MEMBRANE INSTALLATION ON WALLS

A. Comply with Manufacturer’s most recent printed specifications and their specific recommendations for this project except as modified in this section.

B. Equipment shall have no sharp edges and shall be clean and free of any oil based products. Promptly remove any portion of CTEM waterproofing contaminated by such products.



C. Workmen and all others that work on waterproofing shall wear clean, soft-soled shoes so as not to damage materials. Heed all manufacturers’ cautions and warnings in regards to product use. Membrane is slippery when wet or covered with frost, snow and ice. Take proper precautions.

D. Use standard size sheets to reduce the number of three-way overlaps. Obtain Contractor’s approval of sheet sizes shown on shop drawings before ordering materials. Lay out work to minimize traffic over installed areas.

E. Prime the prepared substrate with HyBond Neoprene Primer at a rate of (1 to 1.5) gallons per square leaving the substrate completely black in color. Allow primer to completely dry.

F. At all 90 degree wall-to-wall and floor-to-wall intersections, install one inch cant of TOM in transition. Over the primed substrate, install 75mil by 18 inch wide strip of CTEM SAM membrane as a reinforcement layer in corners. Lap the previously installed membrane at least 9 inch at the ends. Securely broom into place the membrane after installation with a soft bristle broom.

G. Install self-adhering weathering ply membrane in accordance with manufacturer’s installation instruction(s) and providing three (3) inches side laps. End laps of the weathering ply membrane shall be lapped nine (9) inches, where possible, install the end laps in line.

H. Install 90 mil weathering ply membrane in either horizontal or vertical format, and as shown on the approved shop drawings.

1. Horizontal Application: Apply first lift or run of 90 mil membrane to primed and flashed wall area in horizontal runs (lifts) with selvage edge down. Install termination bar along top edge of each horizontal sheet run, anchored eight (8) inches on center. Install sealant and adhesives under bar as required by Manufacturer. Ensure membrane lays uniform on primed surface. Avoid wrinkles, creases, and irregularities in the sheet as it is installed. Roll membrane to engage contact and rid surface of air bubbles and blisters.

a. Weld selvage edge of first horizontal run (lift) to floor-to-wall flashing. b. Weld second horizontal sheet membrane run (second lift) over termination

bar on first horizontal run. Continue horizontal runs up wall area as described. Overlaps shall be as specified herein.

2. Vertical Application: Apply 90 mil CTEM membrane to primed and flashed wall

area in vertical runs from top to bottom, in continuous sheets with no butt overlaps. Place termination bar four (4) inches from top of membrane and anchor at eight (8) inches on center. Install sealant and adhesives under bar as required by Manufacturer. Ensure membrane lays uniform on the primed surface. Avoid wrinkles, creases, and irregularities in the sheet as it is installed. Roll membrane to engage contact and rid surface of air bubbles and blisters.

a. Weld membrane sheet overlaps in vertical runs as specified herein and as

shown on the contract documents. b. Install the next run of membrane sheets in vertical format adjacent to the first

lift. The second lift of membrane shall be continuous. The second lift of



membrane shall overlap the first lift termination bar by seven (7) inches. Roll membrane to ensure contact over termination bar. Weld, End-Lap-Splice-Strip to seal overlaps in lifts where three way splices occur. Continue up wall in similar fashion.

I. Side laps shall be welded with hot air equipment.

3.10 INSTALLATION OF CTEM MEMBRANE-GENERAL

A. Complete the end or butt laps by using membrane flashing. The procedure is as follows: Strip end laps with six (6) inch wide strips of hot air welding membrane flashing (60 mils), centering these strips over the end edge of the lapping membrane and extending these strips minimum three (3) inches over adjacent sheet of membrane.

B. Side laps and end laps of the weathering ply membrane shall be offset from laps of the base ply membrane where required.

C. Install weathering ply membrane in shingle fashion, where necessary, starting at the low point of the structure.

D. At perimeter, where beams abut any vertical surface (i.e. tank walls, equipment curb, etc.) turn up the weather ply membrane for a distance equal to two (2) inches above the previously installed membranes.

E. At other penetrations, turn up the membrane and seal it watertight to the item penetrating the membrane with S.S. clamp or as shown on the contract documents.

F. Broom, hand roll, and roll membrane immediately after laying it using a semi-soft bristle broom and 70 lb linoleum roller or water filled lawn roller-- to roll the membrane firmly into place.

G. Provide plywood protection, over installed membrane, in areas of heavy foot or equipment traffic.

3.11 HOT-AIR WELDING OF LAP AREAS

A. General

1. Adjacent sheets shall be welded in accordance with Manufacturer’s instructions. All side and end lap joints shall be hot air welded. Weld area shall be a minimum of (1.5) inches (40 mm) wide when machine welding (standard hot-air single weld), and a minimum of two (2) inches (2 cm) wide when hand welding. Overlaps shall be with the flow of water where possible.

2. Welding equipment shall be provided by or approved by Manufacturer. All mechanics intending to use the equipment shall be trained and qualified and shall have successfully completed a course of instruction provided by Manufacturer’s representative prior to welding.

3. All surfaces to be welded shall be clean and dry according to Manufacturer’s instructions. No adhesive shall be present within lap areas.



B. Hand Welding

Hand welded seams shall be completed in three stages. Equipment shall be allowed to warm up for at least five minutes prior to start of welding.

1. The lap may be tack welded as needed to hold the seam in place. 2. The back edge of the lap shall be welded with a thin, continuous weld to prevent loss

of hot air during the final welding

3. The nozzle shall be inserted into the seam at a 45 degree angle to the edge of the membrane. Once the proper welding temperature has been reached and the membrane begins to "flow," the hand roller is positioned perpendicular to the nozzle and pressed lightly. For straight seams, the 1½ inch (40 mm) wide nozzle is recommended for use. For corners and compound connections, the ¾ inch (20 mm) wide nozzle shall be used.

C. Machine Welding

Machine welded seams are achieved by the use of Manufacturer's automatic welding equipment. When using this equipment, Manufacturer's instructions shall be followed and local codes for electric supply, grounding and over current protection observed. Dedicated circuit house power or a dedicated portable generator is recommended. No other equipment shall be operated off the generator.

D. T-Joints (three-way overlaps)

Welding waterproofing membranes thicker than 60 mils (1.5mm) requires special attention in order to ensure quality T-Joints. The following steps must be followed:

1. Shave down the top edge of the second (middle) layer of membrane, to create a smooth transition for the top layer of membrane as it crosses perpendicular over the lap.

2. Fully weld a minimum four (4) inches (10.2 cm) round or square (with rounded corners) patch of maximum 60 mil thick membrane centered at the T-Joint intersection. All membrane edges that will be covered by the patch, plus one inch beyond, must be shaved to provide a smooth transition for the patch.

3. Shaving or chamfering of the membrane edges can be done either with a hand held grinder with a joint planer, a chamfering tool available from Manufacturer, or by scraping gently with the hot nozzle of a hand welding tool.

E. Quality Control of Welded Seams

1. All completed welded seams shall be checked by the waterproofing Applicator after cooling for continuity using a rounded screwdriver or other suitable blunt object. Visible evidence that welding is proceeding acceptably is smoke during the welding operation, shiny membrane surfaces, and an uninterrupted flow of black material from the edge of completed joints. On-site evaluation of welded seams shall be made daily by the Applicator to locations as directed by the COTR and/or design professional or Manufacturer’s representative. Two (2) inch (50.8 mm) cross-section samples shall be taken a minimum of three times a day through completed seams. Correct welds which display failure from shearing of the membrane prior to



separation of the weld. Each test cut shall be patched by the Applicator at no extra cost to the Authority.

3.12 MEMBRANE FLASHING AT BEAMS, PARAPETS AND GRATINGS

A. All flashings shall be installed concurrently with the waterproofing membrane as the job progresses. No temporary flashing shall be allowed without the prior written approval of the Contractor and Manufacturer. Flashings shall be adhered to compatible, dry, smooth, and solvent-resistant surfaces.

B. Flashing Installation

1. Over the properly installed and prepared concrete substrate, primer (adhesive) shall be applied using solvent-resistant paint rollers. The primer (adhesive) shall be applied at a rate of approximately 1 to 1-1/2 gallons per 100 square feet (0.61 – 1.02 liters/sq. m) of surface depending upon substrate. The primer (adhesive) shall be applied in smooth, even coatings with no holidays, globs, puddles or similar irregularities. Only an area which can be completely covered in the same day’s operation shall be coated with primer (adhesive). The surface with primer (adhesive) coating shall be allowed to dry completely prior to installing the membrane. Note the following:

a. Drying time increases with cooler temperatures and on days of high humidity

because of slow evaporation of the solvent (hydrocarbon or water based). b. The Applicator shall count the amount of pails of primer (adhesive) used per

area per day to verify conformance to the specified primer (adhesive) application rate.

2. When the adhesive on the substrate is dry, the flashing membrane is cut to a

workable length. Adjacent sheet shall be overlapped a minimum of four (4) inches (10.2 cm). Flashings shall extend a minimum of five (5) inches (12.7 cm) on to the waterproofing membrane. The bonded sheet shall be pressed firmly in place with a silicone hand roller.

3. No primer or adhesive shall be applied in lap areas to be welded. All sheets shall be applied in the same manner. Lap all sheets as required by welding techniques.

C. Complete the entire waterproofing assembly and flashing in a single working day; avoid exposure of any components to rain, snow, or condensation. Provide temporary cut-offs around exposed edges and at incomplete flashing areas from the new membrane to the structural walls and deck. Remove the cut-offs completely before proceeding with subsequent work. If rain threatens during the day, or in an emergency, protect the unfinished exposed waterproofing and flashing components.

D. All flashing membranes on parapets shall be mechanically fastened along the top edge according to approved Manufacturer’s details. Expansion fasteners with plastic sheaths and stainless steel pins (Zamac Nailin®) set in pre-drilled holes shall be used to secure flashings and termination bar to masonry and concrete surfaces.

E. All flashing membranes shall be consistently adhered to substrates. All interior and exterior corners and miters shall be cut and hot-air welded into place.



F. All flashings shall be hot-air welded at their joints and at their connections with the wall membrane.

3.13 METAL FLASHINGS

A. Coordinate with sheet metal subcontractor to complete all metal work in conjunction with waterproofing and flashings so that a watertight condition exists daily.

B. Sheet metal shall be installed to provide adequate resistance to bending and allow for normal thermal expansion and contraction.

C. PVC coated metal joints shall be watertight.

D. Coordinate with sheet metal subcontractor to ensure metal flashings shall have a four (4) inch (10.2 cm) minimum nailing flange and shall be fastened into concrete with acceptable concrete anchors six (6) inches (15.2 cm) on center staggered. Fasteners shall penetrate into concrete or masonry a minimum of one (1) inch (25.4 mm).

E. Adjacent sheets of PVC coated metal shall be spaced 1/4 inch (6.3 mm) apart. The end joints of the metal shall be fastened six (6) inches (15.2 cm) on center. The joints shall be covered with one (1) inch (25.4 mm) wide aluminum tape. A four (4) inch (10.2 cm) wide membrane flashing strip shall be hot air welded over the joint.

3.14 TEMPORARY CUT-OFF

A. All flashings shall be installed concurrently with the membrane in order to maintain a watertight condition as the work progresses. When a break in the day’s work occurs in the central area of a project, install a temporary watertight seal. The new membrane shall be sealed to the substrate so that water will not be allowed to travel behind the new waterproofing. When work resumes, the contaminated membrane shall be removed from the work area and disposed of off-site. None of these materials shall be reused in the new work.

B. If inclement weather occurs while a temporary waterstop is in place, the subcontractor shall provide the labor necessary to monitor the situation to maintain a watertight condition.

C. If any water is allowed to enter under the newly-completed waterproofing, the affected area shall be removed and replaced at the Applicator’s expense.

3.15 WATER TESTING AREAS WHERE EFVM IS NOT EFFECTIVE

A. A water test should be conducted on clamping ring assemblies where said metal rings interfere with EFVM testing procedures, and only after the area to be tested has been inspected and accepted for a water test. Dry conditions under the membrane must be verified by test openings prior to conducting the water test. No protection layers are to be in place at time of the water test.

B. It is the contractor’s responsibility to confirm that the deck will support the weight of the water.



C. The size of area tested is to be determined by the applicator. It is recommended that the water tests be conducted in a reasonable size area as work progresses. The slope of the substrate will impact the size of the area that can be tested. In no case shall the water be allowed to extend above the top height of the waterproofing flashing termination.

D. Test for leaks by plugging the drains and covering the entire area where clamping rings exist on piping and mechanical penetrations with a minimum of two (2) inches (50.8 mm) of water. Let the water stand for a minimum of 48 hours. An acceptable blue dye may be added to the test water to differentiate between water entries from other sources. In cold weather, the use of environmentally friendly anti-freeze agents or salts, or continuous water circulation with pumps, is recommended to prevent freezing.

E. Upon completion of water tests, the area shall be drained. Examine the deck for signs of leakage and walk all membrane seams watching for signs of “bubbling” or expulsion of water. Critically examine all seams in flat areas of standing water.

F. Test openings shall be made at low points of the tested area, and other areas as necessary, after the area is drained. Examine substrate at openings to check for leakage. The applicator shall patch and probe all test openings at no cost to the Authority.

G. Should leaks be discovered, the Applicator shall locate leak source(s) and make repairs according to the following guidelines:

1. Open wet area and allow deck to dry. 2. Dry out or replace wet leveling layer. 3. Seal membrane, thoroughly probe hot-air welds, and conduct a new water test. 4. All costs associated with the re-work shall be borne by the Applicator.

H. Water tests must be judged to be successful by the COTR, the waterproofing subcontractor, and Manufacturer before the installation of any subsequent components of the waterproofing system.

3.16 ELECTRIC FIELD VECTOR MAPPING (EFVM)

A. Provide EFVM leak detection on waterproofing membrane for testing of capillary defects and/or breaches in the membrane. Testing is to be administered by a qualified testing agency.

1. International Leak Detection, Ltd. 11 Bartlett Drive Ajax, Ontario, Canada L1S 4V2 (905) 428-8283

B. Test the entire membrane on an area-by-area basis as required by the contract documents.

C. Wet the entire membrane test area with water prior to the start of each test and maintain wet for the duration of testing. Verify integrity of the membrane at drains and penetrations by localized testing.



D. If a breach is detected, the Applicator shall make repairs according to the following guidelines:

1. Open wet area and allow deck to dry. 2. Dry out or replace wet leveling layer. 3. Seal membrane, thoroughly probe hot-air welds, and conduct new water test. 4. All costs associated with the re-work shall be borne by the Applicator.

3.17 PROTECTION LAYER INSTALLATION

A. Install protection layers over completed membrane assemblies as soon as possible. Coordinate this work with Contractor, Authority and Manufacturer’s representative to allow inspection and acceptance of membrane and water tests before installation of protection layers.

B. HDPE: Install polyethylene protection layer over the membrane. Overlap the protection layer a minimum of four (4) inches (10.2 cm). Overlaps shall be with the flow of water where possible. Install subsequent layers or overburden immediately whenever possible. Excessive wrinkling may occur if HDPE is allowed to remain exposed to strong sunlight or heat.

C. HyGlass Board: 3/16 inch thick, by 4 foot by 5 foot, asphalt impregnated fiberglass mat.

3.18 INSTALLATION OF CONCRETE PAVER PROTECTION SLABS

A. After completion of all inspection and testing of the MMWIS, waterproofing installer to coordinate and install a 2.0 inch, concrete paver protection layer over the completed waterproofing assembly. Ensure no damage is done to the completed Work.

3.19 INSTALLATION OF TEMPORARY PROTECTION BOARD

A. Areas not immediately covered by (2.0) inch protective concrete pavers shall be protected by temporary protective layer.

B. Install 3/8-inch protection board with butted joints over membrane protective layer covering waterproofing membrane before starting subsequent construction operations but after inspection of the waterproofing by the COTR. Apply protection boards using an adhesive or double faced tape. Contractor shall ensure that waterproofing membrane, membrane protection layer and protection board are compatible.

3.20 CLEANING

A. Waterproofing materials, flashings, and metal work shall be removed from the construction site and taken to a legal dumping area authorized to receive such materials.

B. Site clean-up, including both interior and exterior building areas below or adjacent to, or in any way affected by the construction, shall be completed to the Authority’s satisfaction.



C. Areas stained, dirtied, and discolored or otherwise damaged due to the Work shall be cleaned, restored, and/or replaced as required.

PART 4 - SUBCONTRACTOR’S QUALITY CONTROL REQUIREMENTS

4.1 FIELD QUALITY CONTROL

A. Conform to all applicable provisions of Division 1 Section “Quality Requirements.”

B. The following describes the minimum inspection and testing required in the Contractor’s Quality Control (CQC) Plan and Program for the work of this Section and is for CQC only. The implementation of the Contractor Quality Control program does not relieve the contractor from the responsibility to provide the work in accordance with the Contract Documents, applicable codes, regulations and governing authorities.

C. The CQC plan and program shall include, but not be limited to, the following testing and inspection elements. These elements are provided as a minimum starting point for the contractor to use to generate his/her complete CQC Program. The attached QA/QC forms at the end of this specification shall serve as a guide for on-site inspection by the MMWIS.

4.2 FIELD TESTING GENERAL REQUIREMENTS

A. Arrange with the Membrane Manufacturer to have the services of a Waterproofing Installation Supervisor at the site to accept concrete substrates and other surfaces before installation of waterproofing materials. The Waterproofing Installation Supervisor or the Membrane Manufacturer shall check and test all heat-welded seams before the water tests, and prior to installation of protection layers. The Waterproofing Installation Supervisor shall issue written reports. The subcontractor shall include all cost for the Waterproofing Installation Supervisor, including expenses, in his/her bid price.

B. Applicator will provide to the jobsite a portable tensiometer for testing the peel and shear strength of the field-welded seams on a daily basis. The Applicator shall include all costs for seam testing in his/her bid.

C. Monitor finishing layer installation and covering operations to assure no damage is done to the waterproofing membrane. Alert all parties concerned of any activities, which might adversely affect the performance of the waterproofing system.

D. Prior to demobilization from the site, the Work shall be reviewed by the COTR and contractor. All defects shall be noted and non-compliance with the Specification shall be brought to the attention of the Membrane Manufacturer for their recommendations, and shall be itemized on a punchlist. These items must be corrected immediately on a punchlist by the contractor prior to demobilization to the satisfaction of the COTR and Membrane Manufacturer.

E. Water testing of the completed waterproofing system shall be coordinated by the Installer with the Authority after all work is complete on the tank floors and walls for a minimum of



72-hours is required. Water testing shall be witnessed and confirmed in writing by the COTR, the Waterproofing Contractor, and the Membrane Manufacturer’s Representative.

1. Conduct water test in concrete tanks to top of membrane. Test must be judged to be successful by the Authority and the Membrane Manufacturer before installation of subsequent components of the waterproofing system.

2. Test for leaks by plugging drains and filling to a minimum 50-mm (two-inch) depth from top of membrane clamping ring flashing. Let water stand for 72 hours.

3. Drain water from test area and mark areas where seams are suspect. 4. Examine spaces below deck(s) for signs of leakage, and walk all membrane seams

watching for signs of bubbling or expulsion of water. Critically examine all seams in flat areas of standing water.

4.3 INSPECTION PERSONNEL

A. The inspector shall have a minimum of five years experience in the installation of flexible membranes in underground waterproofing installations and must be proficient in the supervision of testing procedures.

4.4 INSPECTION AND TESTING

A. Surface Inspection and Acceptance:

1. Inspect all surfaces to which waterproofing will be applied prior to waterproofing installation for compliance with the surface preparation criteria defined herein.

2. Inspect area to be waterproofed in presence of the waterproofing installer’s quality control representative and the COTR’s representative.

3. Do not allow installation of any element over the waterproofing system until all deficiencies have been corrected. Re-inspect area after corrective action has been taken.

4. Do not allow waterproofing installation outside an approved area. 5. Use approved Surface Acceptance Forms to release an area for waterproofing

installation. Obtain the waterproofing installer’s quality control representative and the MMWIS signature on the Surface Acceptance Form.

6. Distribute signed Surface Acceptance Forms with the Inspector Daily Reports in compliance with Section1, “Quality Requirements.”

B. Installation Inspection:

1. During installation of any element of the waterproofing system, inspect the following:

a. Use of specified materials. b. Proper storing and handling of material. c. Ambient temperature. d. Installer qualifications. e. Seam direction and layout as per subcontractor shop drawings. f. Verify spacing of termination bar and anchorage. g. Proper overlap of membrane at seams for welding.



h. Application of welds as specified. i. Installation of corner patches. j. Execution of details as per shop drawing or Contract Drawings. k. Location and elevation of monitoring tubes; provide as-built documentation

as specified herein and forwarded to the COTR.

1. Installation of protective layer.

C. Testing:

1. Perform tests as installation progresses. Repair and retest seams that fail before continuing installation.

2. At single welds, including heat welding at special fittings, check all welds for continuity by inspection methods as specified herein.

3. Reject defective work and request repair. 4. Use approved Waterproofing Installation Acceptance Form to release an area for

waterproofing installation. Obtain the waterproofing installer’s quality control representative and the MMWIS signature on the Waterproofing Installation Acceptance Form.

5. Distribute signed Waterproofing Installation Acceptance Forms with the Inspector Daily Reports in compliance with Section 014000, “Quality Requirements.”

D. Protection and Pre-Placement Inspection:

1. Protect waterproofing with protective concrete pavers as soon as reasonable after completion of waterproofing installation.

2. Check for and relieve, if necessary, water build-up behind membrane with established methods prior to concrete placements.

3. Do not allow penetration of waterproofing for any reason. 4. Do not allow penetration of protective concrete pavers for setup of floor and wall

installation.

4.5 PRE-INSTALLATION MEETING

A. Before installation of waterproofing and associated work, meet at project site with installer, membrane manufacturer, installers of related work, and other entities concerned with waterproofing installation performance, including, where applicable, test agencies, governing authorities, and the Contractor.

1. Comply with the requirements in Section 013100, “Project Coordination and Meetings.”

B. Record discussions and agreements and furnish copy to each participant. The following items shall be reviewed:

1. Start date, schedule of work to be performed; 2. Chain of command when disputes and issues occur; 3. Authority of Inspector; 4. Summary of what the contents of the daily report will be; 5. Procedures for testing – what constitutes a failure;



6. Expectations of care taken when working around membrane; and 7. Special details and change of condition issues if they should occur.

C. Pre-installation conference will be held in accordance with the contractor’s CPM schedule as approved by the COTR or as otherwise directed by the COTR.




CONTRACTOR’S CTEM SHEET WATERPROOFING WARRANTY

OWNER/AUTHORITY ___________________________________________________________________________ ADDRESS ___________________________________________________________________________ PROJECT ___________________________________________________________________________ PROJECT ADDRESS ___________________________________________________________________________ DATE OF FINAL ACCEPTANCE ___________________________________________________________________________ WATERPROOFING CONTRACTOR ___________________________________________________________________________ ADDRESS ___________________________________________________________________________ PHONE NO: ___________________________________________________________________________ This Warranty stipulates that the above-named Waterproofing Contractor shall, during a period of five (5) years from the date of final acceptance of the Work, maintain the waterproofing membrane and flashing systems in a watertight condition and repair all defects which result from faulty workmanship or defective materials, without further cost to the Authority; including the removal, disposal, and replacement of finish materials, concrete, or other overburden materials.

Excluded from this Warranty may be any and all damage to the buildings or their contents from water leakage and/or by acts or omissions of the Authority; fire, lightning, hailstorms, or other unusual phenomenon of the elements; movements or failure of the supporting building structure that causes membrane or flashing failure. Before expiration of the above Warranty period, the Waterproofing Contractor shall inspect the Project in the presence of the Authority’s Representative and make the necessary correction of all deficiencies not considered normal. If installation is inaccessible or otherwise covered, and visual inspection is not possible or practical, the Authority will inform the Waterproofing Contractor of leaks or defects at least one month prior to the expiration of the Warranty period. The Warranty shall remain in force until the necessary repair work has been done.

WATERPROOFING CONTRACTOR _________________________________________ Signed _________________________________________ Title _________________________________________ Date



WATERPROOFING LINER SYSTEM LABOR AND MATERIAL WARRANTY BY MANUFACTURER

OWNER/AUTHORITY______________________________________________________________ ADDRESS________________________________________________________________________ PROJECT_________________________________________________________________________ PROJECT ADDRESS_______________________________________________________________ DATE OF FINAL ACCEPTANCE_____________________________________________________ WATERPROOFING LINER CONTRACTOR____________________________________________ ADDRESS________________________________________________________________________ PHONE NO._______________________________________________________________________ WARRANTY SERIAL NUMBER________________AREA WARRANTY (SQ.FT.) ___________ DATE OF FINAL INSPECTION_____________________BY:______________________________ CONTRACT VALUE: ______________________________________________________________ Waterproofing Liner Manufacturer warrants to the Authority of the structure described above (“Owner”), that subject to the terms, conditions, and limitations stated herein, Waterproofing Liner Manufacturer will repair and make water-tight any leaks to the Waterproofing Liner Membrane installed according to the Waterproofing Liner Manufacturer’s Technical Instructions by a Manufacturer’s Authorized Contractor for a period of twenty (20) years commencing from the date of substantial completion of the Dulles Cooling Tower Project. The financial limitation of this warranty, over its twenty (20) year life, shall not exceed 1.0 times the originally installed contract price or Three Hundred Thousand dollars and 00/100 U.S. Dollars ($300.000.00) TERMS, CONDITIOINS, LIMITATIONS

Authority shall notify Waterproofing Liner Manufacturer in writing within thirty (30) days of discovery of any leaks in the Waterproofing Liner Membrane. If, on Waterproofing Liner Manufacturer’s inspection, 1) Waterproofing Liner Manufacturer determines that leaks in the waterproofing are caused by manufacturing defects in Waterproofing Liner Manufacturer’s Membrane, or 2) defective workmanship of the Waterproofing Liner Manufactures Authorized Waterproofing Installing Contractor, or 3) attack by water treatments within warranty period Liner Manufacturer’s liability shall be limited to Waterproofing Liner Manufacturer’s repair of the leaks. If Authority disputes findings of Manufacturer’s inspection, Authority has the right to utilize a mutually acceptable third party to make a determination as to cause of defect. The cost of the third party inspection shall be borne by Authority unless the defects are determined to be the result of one or more of the causes listed in items 1, 2 or 3 above. The cost of repairing defects and leaks shall be entirely borne by the Waterproofing Liner Manufacturer including, without limitation, system repairs, grouting, over-burden removals or other remedies. However, the Authority will reimburse Waterproofing Liner Manufacturer for Waterproofing Liner Manufacturer’s costs associated with over-burden removal if upon subsequent inspection the cause of the leak is not covered under this warranty. Authority cannot take the sump tank(s) out of service during critical operating periods, as determined solely by Authority; therefore, Waterproofing Liner Manufacturer understands that the Authority will coordinate with Waterproofing Liner Manufacturer to provide access to the membrane for repair during non-critical periods but such non-critical period may not occur immediately after discovery of the leak. Consequently, Waterproofing Liner Manufacturer shall be required to perform all necessary repairs, even if leak becomes progressively worse, provided such non-critical period occurs within nine (9) months of Authority’s discovery of leak.



1. This Warranty shall not be applicable if any of the following shall occur:

a. The Membrane is damaged by natural disasters, including, but not limited to, earthquake, lightning, hurricanes, and tornadoes; or

b. The Membrane is damaged by any acts of abuse, negligence, accidents, disobedience, or

acts of war; or c. Metal work or other accessories or equipment is used in abusive contact against the

waterproofing liner and causes leaks; or d. If, after installation by the Authorized Waterproofing Liner Contractor, there are any

alterations or repairs made on or through the Membrane, or objects such as, but not limited to, fixtures, equipment, or structures are placed on or attached to the structure without first obtaining written authorization from Waterproofing Liner Manufacturer. Emergency leak repairs made by Authority in a manner compatible with the membrane do not void the warranty provided that written notice of the emergency repair is provided to the Waterproofing Liner Manufacturer within ten (10) days of said repair; or

e. Failure by the Authority or his employee’s to perform maintenance in accordance with

Manufacturer’s requirements as stated in approved submittals; or f. The membrane is damaged by chemical exposure in excess of those listed in

manufacturer’s attached chemical resistant chart. In the event of any conflict between the terms and conditions set forth in this Labor and Material Warranty and any other contract documents, agreements, covenants or warranties, the terms and conditions of this Labor and Material Warranty shall supersede or amend the terms or conditions of such contract documents, agreements covenants or warranties. During the period of this Warranty, Waterproofing Liner Manufacturer and its Authorized Contractor, and each of their respective agents and employees, shall have access by appointment from Authority to the premises during regular business hours. Waterproofing Liner Manufacturer shall have no obligation under this Warranty until all bills of materials, installation, and inspection services have been paid for in full by Authority, provided, however, that the 20-year warranty period shall continue to run during the period of non-payment. Waterproofing Liner Manufacturer’s failure at any time to enforce any of the terms or conditions stated herein shall not be constructed to be a waiver of such provision. No other representation or warranty, expressed or implied, is given by Waterproofing Liner Manufacturer. Waterproofing Liner Manufacturer shall not be liable for any incidental or consequential damages resulting from a leak in the membrane unless fraud or negligence shall have occurred. This Warranty may not be modified or amended unless such modification or amendment is in writing and signed by Waterproofing Liner Manufacturer and Authority. NO REPERESENTATIVE OF WATERPROOFING LINER MANUFACTURER HAS THE AUTHORITY TO MAKE ANY REPRESENTATIONS OR PROMISES EXCEPT AS STATED HEREIN AND OWNER ACKNOWLEDGES THAT NO SUCH REPRESENTATIONS OR PROMISES HAVE BEEN MADE OR RELIED UPON BY OWNER.



Venue for any lawsuit or arbitration concerning this Agreement shall be in the Commonwealth of Virginia. THIS WARRANTY IS EFFECTIVE FROM __________________ THROUGH _______________. WATERPROOFING LINER MANUFACTURER AUTHORITY, OWNER OR OWNER’S REPRESENTATIVE REPRESENTATIVE (Received and Accepted By) (Received and Accepted By) __________________________________ __________________________________ Company Company __________________________________ __________________________________ Signed Signed __________________________________ __________________________________ Title Title



SERVICE / MAINTENANCE AGREEMENT AND WARRANTY OWNER/AUTHORITY______________________________________________________________ ADDRESS________________________________________________________________________ PROJECT_________________________________________________________________________ PROJECT ADDRESS_______________________________________________________________ DATE OF FINAL ACCEPTANCE_____________________________________________________ WATERPROOFING LINER CONTRACTOR____________________________________________ ADDRESS________________________________ PHONE NO._____________________________ WARRANTY SERIAL NUMBER:____________ AREA WARRANTY (SQ.FT.) ______________ DATE OF FINAL INSPECTION______________ BY:____________________________________ CONTRACT VALUE:_______________________________________________________________ 1) Waterproofing Installer, at no additional cost to the Contract, shall provide to Authority annual inspection(s) of the membrane in all tank(s) (4 thus) for a period of five years. Inspections must be performed by a Hyload certified installer. Proof of certification must be submitted to Authority. The annual inspection(s) shall start one year after cooling tower operations begin and shall be coordinated with Authority at a time when the tank(s) are out of service. More than one mobilization per year will be required to inspect all four tanks. Photograph concerns, write report and copy membrane manufacturer. 2) The following items shall be inspected in each tank: a) CTEM tie-in at spillway top; b) CTEM tie-in at end of spillway; c) CTEM adhesion to sides of spillway; d) Caulking around M/E/P penetrations in areas below grating and around sheet metal flashing; e) Condition of membrane directly under grating; f) Condition of membrane flashing and sealant around grating beam supports; g) All clamping ring connections where exposed to view; h) Check torque values on nuts of clamping rings; i) Sheet metal and termination condition around interior spillways (8 thus per tank); j) Condition of tank wall CTEM membrane, including: i) Identify any membrane sagging, blistering, lack of adhesion or looseness in sheet or at termination bars; ii) Run probe along exposed seams of CTEM on any suspect areas to ensure integrity of welded seams; iii) Look for sheet membrane penetrations or divots in the exposed surface, pay particular attention at sheet metal interfaces; iv) Inspect CTEM wall membrane near concrete paver protection surface; v) Look for abrasion at termination bar anchor heads; and vi) Ensure CTEM membrane has not pulled away from inside tank wall corners.



3) At the end of the sixth year from date of initial operation, the Installer and Authority, at the Authority’s option, shall negotiate an additional five year inspection/maintenance agreement. At which time, both parties shall be familiar with the time and equipment needed for maintaining this service agreement. 4) If in the event a suspect area in the CTEM membrane looks in need of repair, and both parties do not concur with the scope, procedure and duration of repair, the Membrane Manufacturer shall recommend resolution to this matter. 5) If in the event, a natural disaster occurs similar to those described in the 20 year Labor and Material Warranty, the Authority shall contact both the Installer and Membrane Manufacturer for additional inspections if deemed necessary by the Authority. THIS WARRANTY IS EFFECTIVE FROM __________________ THROUGH ____________. WATERPROOFING INSTALLER AUTHORITY/OWNER OR OWNER’S REPRESENTATIVE REPRESENTATIVE (Received and Accepted By) (Received and Accepted By) __________________________________ __________________________________ Company Company __________________________________ __________________________________ Signed Signed __________________________________ __________________________________ Title Title __________________________________ __________________________________ Date Date

IAD UTILITY PLANT – ALTERNATE 1 ONLY JANUARY 13, 2011 CHILLER WATER PIT WATERPROOFING REPLACEMENT DULLES COOLING TOWER

MECHANICALLY FASTENED THERMOPLASTIC SHEET WATERPROOFING 07 13 64 - 1 (ALTERNATIVE # 1 ONLY)

SECTION 07 13 64 – MECHANICALLY FASTENED THERMOPLASTIC SHEET WATERPROOFING (ALTERNATE # 1 ONLY)

PART 1 - GENERAL


A. Drawings, Contract Provisions, Special Provisions, Supplementary Provisions, and Division 1 Specification Sections apply to this Section.

1.2 SUMMARY

A. This section includes all Work required to complete, as indicated by the Contract Documents, and furnish all supplementary items necessary for the proper installation of the waterproofing system.

B. Work Included:

1. Principal work in this Section shall include waterproofing in the following areas:

a. PVC, thermoplastic sheet membrane waterproofing, loose-laid on inside of all concrete tank floors as denoted WP-1.

b. PVC, thermoplastic sheet membrane waterproofing, mechanically fastened, at interior concrete tank walls as denoted WP-2.

c. Install concrete pavers with pads on floor, clamping rings on pipe penetrations, monitoring tubes, sheet metal angles on floor, and sheet metal flashing at spillway recesses.

d. For bidding purposes, Contractor to include 50 lineal feet of chemical grouting per tank or 200 lineal feet in total. Contractor to include 300 square feet of existing membrane removal per tank or 1200 square feet in total. Dispose all waste and debris.

1.3 DESCRIPTION

A. Scope

To install thermoplastic membrane waterproofing system and fastener’s with any associated protection layers and other items for walls and slabs at the interior surfaces of the four concrete water holding tanks. Work areas (tanks) are confined spaces, all workman shall be trained and have OSHA 30 cards.

The work includes but is not necessarily limited to the following:

1. Substrate Preparation, grouting, de-bonded membrane removal; 2. Geotextile Leveling Layer; 3. Waterproofing Membrane; 4. Membrane Flashings; 5. Metal Flashings;



6. Protective Layer(s); 7. Monitoring the Installation of Finishing Layers; 8. Sealants and Adhesives; 9. PVC pipe monitoring tube; 10. Termination bars; 11. Disc anchorage; 12. Grid adhesive and strips; 13. Metal pans; and 14. Metal Clamping rings and anchors.


A. Submittals – Division 1 Sections.

B. Precast Concrete Pavers – Section 03 78 00

C. Chemical Resin Injection Grouting – Section 07 15 00

D. Sheet Metal Flashing – Section 07 62 00

1.5 DEFINITIONS

A. Waterproofing: Layered system consisting of leveling layer, PVC, synthetic sheet membrane, and mechanical terminations to prevent intrusion of water through the interior of the finished concrete holding tank structures.

B. Membrane: Synthetic PVC waterproofing membrane specifically formulated for sealing and containing water in concrete tank structures.

C. Double Weld (Wedge Weld): Machine welded seams achieved by use of automatic hot wedge welding equipment.

D. Single Weld: Hand welded seam consisting of a tack weld, a thin continuous weld and a rolled end weld. Single seams are sealed with PVC chord or encapsulation strip at membrane welds where scrim is exposed.

E. Extrusion Weld: The introduction of a ribbon of molten resin along the edge of two overlapping sheets creating a homogenous bond between sheets and sealing edge of seam if scrim reinforcement is exposed.

F. Encapsulation Strip: A strip of unreinforced membrane that is placed and welded over a hand welded or wedge weld seam to reduce the potential of voids created in the hand welding process and also encapsulate the cut edge (scrim exposed) of the membrane. Encapsulation strip means the same as “strip in”.

G. Membrane Protection Layer: A membrane layer specifically designed to be attached to and completely cover the waterproofing membrane to protect it from damage prior to concrete protection slab placement, and other construction activities potentially detrimental to the integrity of the membrane.



H. Membrane Protection Patch: A 60-mil think membrane layer specifically designed to protect the PVC membrane patch from damage caused by the remedial monitoring pipes and construction activities potentially detrimental to the integrity of the membrane.

I. Protective Concrete: Concrete pavers placed on tank floor slab waterproofing to prevent damage.

J. Control and Monitoring Pipes: Pipes typically installed near water barrier intersections and concrete tank construction joints to control watertightness of individual membrane sections. If leakage should occur, the pipes are used for remedial air testing, specifically located at each lift of PVC sheet membrane.

K. Hydrophilic Waterstop: Polymer swelling gasket strip applied in connection with termination bars at waterproofing terminations and sectioning.

L. Grid Adhesive: A two-part urethane that provides for adhesion of waterproofing membrane to concrete substrates at termination bar placement.

M. Stainless Steel Band: Stainless steel banding with screw clamp to help ensure watertight connection between mechanical penetrations and waterproofing membrane.

N. Temporary Protection Board: 3/8-inch thick sheets of pressure treated plywood. To be used temporarily over concrete substrates and structure walls, and at construction joints for protection of membrane waterproofing system and components.

O. Surface Acceptance form: Form provided by Contractor and Membrane Manufacturer to document acceptance of the concrete substrate prior to membrane application.

P. Waterproofing Installation Acceptance Form: Form provided by Membrane Manufacturer Inspector, which accepts completed installation prior to and after concrete paver slab and/or metal pan placement.

1.6 QUALITY ASSURANCE AND PERFORMANCE REQUIREMENTS

A. This waterproofing system shall be applied only by a waterproofing Applicator authorized by Manufacturer prior to bid.

B. Installation of leveling layer, waterproofing membrane, waterbars, separation layer, flashing membrane, membrane protection layers, and monitoring tubes shall be the responsibility of the membrane applicator to ensure undivided responsibility.

C. Obtain primary waterproofing materials, membrane and flashings, from a single manufacturer with not less than 10 years of successful experience in waterproofing application. Provide other system components only as approved by system Manufacturer.

D. Manufacturer’s Standard Warranty is required for the project, the waterproofing Applicator shall arrange with Manufacturer to have the services of a monitor to check



all welded seams in each tank prior to water-testing. The Applicator shall include all costs for the monitor, including expenses in his bid price.

E. Pre-construction conference to be held with the Authority, COTR, Applicator’s field superintendent, waterproofing foreman, Manufacturer’s representative, and other involved trades to discuss waterproofing practices applicable to this project.

F. There shall be no deviation made from the contract specification or the approved shop drawings without prior written approval by the Authority or the Authorities’ representative, and/or design professional, and Manufacturer.

G. Water testing of the completed waterproofing system installed on horizontal structural slabs (minimum of 72 hours) is required for Standard warranties. Water testing shall be witnessed and confirmed in writing by the COTR, the waterproofing Applicator, and Manufacturer.

H. Water testing may be supplemented with Electric Field Vector Mapping (EFVM) – low voltage electronic leak detection by a qualified testing agency. See Section 3.12.

I. All work shall be completed by trained and authorized personnel.

J. Supervision and Training of Personnel/On-going QA/QC Monitor:

1. Execute all installation and testing under the direct supervision of an individual with minimum five (5) years experience in the installation of waterproofing systems for structures using membrane materials as specified.

2. Provide trained personnel for installation and testing operations. The installer must have a minimum of five (5) years of experience in the installation of flexible membranes in waterproofing installations. The proficiency of each welder shall be demonstrated in the field for approval by the COTR.

K. ASTM Standards: Material data obtained according to the following ASTM Standards:

1. ASTM D 374: Test Method for Thickness of Solid Electrical Insulation. 2. ASTM D 568: Test Method for Rate of Burning and/or Extent and Time of

Burning of Flexible Plastics in a Vertical Position. 3. ASTM D 638: Test Method of Tensile Properties of Plastics. 4. ASTM D 1593: Specification for Non-Rigid Vinyl Chloride Plastic Film and

Sheeting. 5. ASTM D 1621: (MOD.) Compressive Properties of Rigid Cellular Plastics. 6. ASTM D 1777: Method for Measuring Thickness of Textile Materials. 7. ASTM D 1785: Specification for Poly (Vinyl Chloride) (PVC) Plastic Pipe,

Schedules 40, 80, and 120. 8. ASTM D 3776: Test Methods for Mass Per Unit Area (Weight) of Woven

Fabric. 9. ASTM D 3786: Test Method for Hydraulic Bursting Strength of Knitted Goods

and Non-Woven Fabrics: Diaphragm Bursting Strength Tester Method. 10. ASTM D 4533: Test Method of Trapezoid Tearing Strength of Geotextiles. 11. ASTM D 4632: Test Method for Breaking Load and Elongation of Geotextiles

(Grab Method).



12. ASTM D 4716: Test Method for Transmissivity Products.

L. Product:

1. Supply and install only products specifically designed and manufactured for this type of construction.

2. Select manufacturers of accessory products who are regularly engaged in the production of similar materials for waterproofing structures.

M. Upon request, the Applicator must submit a list of jobs performed by his employees and supervisors similar to the proposed system being bid.

N. Manufacturer’s Performance:

1. Shall have documented experience of a minimum of 500,000 square feet. 2. No water leakage shall be acceptable and the structures shall be watertight. 3. The waterproofing products are to be made by a nationally-recognized

manufacturer specializing in waterproofing systems: have been manufactured for at least five (5) years; have been used successfully on projects similar to this; and are appropriate for the substrate, treated water, hydrostatic pressure, and conditions expected in this Contract.

O. Source Quality Control:

1. Membrane Manufacturer shall test each run of waterproofing membrane per their quality control plan.

2. Each roll of membrane material supplied to the site shall be clearly marked identifying the run in which the membrane was made.

1.7 SUBMITTALS

A. The Applicator shall submit to the COTR and/or design professional the following:

1. Shop drawings and details that have been stamped and accepted by Waterproofing Manufacturer prior to submittal;

2. Specimen copy of Manufacturer’s warranty; 3. Specimen copy of Applicator’s warranty (attached); 4. Resume of waterproofing installation supervisor, QA/QC monitor; 5. The following items shall be submitted as work progresses from “Contractor’s

Quality Control Requirements”:

a. Written reports from Membrane Manufacturer’s Inspector; b. Results of portable tensiometer testing of seams; c. Surface Acceptance Form; d. Water test results; e. Waterproofing Installation Acceptance Form; and f. Pre-Installation notes and agreements.



6. Letter from Manufacturer certifying that the Contractor is an approved applicator in good standing. The Manufacturer and Contractor shall provide the following:

a. Letter stating Contractor has had ten (10) years recent experience installing membranes below-grade, in tanking, or similar to that being bid; and

b. The Contractor has performed at least ten (10) jobs and 250,000 square feet of membrane similar to that being bid.

B. Product Data / Catalogue Cuts / MSDS Sheets / Material Samples:

1. PVC Membrane(s) Sheet(s). 2. Membrane Protective Layer. 3. Membrane Protective Patch. 4. Anchorage pins for termination bars. 5. Monitoring Pipes and flashing. 6. Hydrophilic Waterstop. 7. Grid Adhesive and Grid Sheet Membrane. 8. Stainless Steel Band. 9. Protection Board or Sheet. 10. Termination Bar and Anchors. 11. Disc(s) and attachments. 12. Leveling Layer. 13. Encapsulation Chord. 14. EFVM Testing (if used). 15. Bonding Adhesive (if needed). 16. Caulk or Sealant. 17. Cleaning Solution at seams. 18. Stainless Steel anchor bolts for clamping rings. 19. Epoxy adhesive for anchor bolts. 20. Stainless steel sheet metal (PVC coated or non-coated).

C. Field Samples:

1. Double weld samples, three feet long, from each double wedge welding machine prior to the start of daily shift.

2. Prepare and submit field samples prior to seam welding.

D. Shop Drawings shall be submitted as CAD drawings, a minimum 30 days prior to start of work to the COTR for approval. Do not proceed with waterproofing installation without approved shop drawings. Submit plans, sections, and details of the following:

1. Scope of Work, including elevations of tank wall monitoring pipes; 2. Sequence of waterproofing installation relative to construction sequence,

including detailed installation procedure. 3. Sheet layout of membrane splice locations, grid sizes, and type of welds. 4. Build-up of layered waterproofing at floor and on inside face of cast-in-place

tank walls. 5. Layout of grids for sectioning, including location of remedial monitoring pipes

at grid areas.



6. Details of:

a. Waterproofing terminations at floors and walls; b. Waterproofing at corners, change of elevations, and mechanical

penetrations; c. Overlaps of PVC membrane on walls; d. Remedial monitoring pipe assembly at tie-in areas; e. Intended remedial pipe protection from concrete paver placement.

E. Waterproofing protection plan/narrative and details describing the intended procedures to prevent damage during construction operations such as, installation of scaffold, embedded items, and placement of concrete paver slab. The following items shall be addressed:

1. Storage. 2. Handling. 3. Welding. 4. Attachment. 5. Smoothness of surfaces. 6. Testing. 7. Installation equipment. 8. Detection of physical damage. 9. Methods of local repair.

F. Installer certification showing that the Installer (list of approved employees) is approved for the installation work by the system supplier.

1.8 PRODUCT DELIVERY, STORAGE, AND HANDLING

A. All products delivered to the job site shall be in the original unopened containers or wrappings.

B. Handle all materials to prevent damage. All materials shall be placed on pallets fully protected from moisture with canvas tarpaulins.

C. Membrane rolls shall be stored lying down on pallets and fully protected from moisture with canvas tarpaulins.

D. Bonding adhesives shall be stored at temperatures above 40°F (5°C).

E. All flammable materials shall be stored in a cool dry area away from sparks and open flames. Follow precautions outlined on container or supplied by the material manufacturer/supplier.

F. Any materials which the COTR and/or Manufacturer determine to be damaged are to be removed from the job site and replaced at no cost to the Authority.

1.9 JOB CONDITIONS



A. Proceed with waterproofing membrane installation only after substrate preparation is complete. The COTR and/or design professional and the waterproofing applicator must accept substrate before proceeding with membrane installation.

B. Substrate must be clean and smooth. Remove all existing loose de-bonded membrane. With the exception of areas to receive grid strips, damp concrete is acceptable, however no standing or visible water is allowed. Do not work in rain or snow or adverse weather conditions. Severe temperatures, moisture and humidity may affect the installation of products during construction. Comply with applicable installation requirements for all components.

C. Only install new waterproofing that can be made weathertight each day including all flashing work.

D. All work shall be scheduled and executed without exposing the interior building areas to the affects of inclement weather. The building and its contents shall be protected against all risks.

E. The Applicator shall take precautions that storage and/or application of materials and/or equipment does not overload the deck or building structure.

F. All new and temporary construction, including equipment and accessories, shall be secured in such a manner, at all times, as to preclude wind blow-off or damage.

G. Temporary waterstops shall be installed at the end of each day’s work and shall be removed before proceeding with the next day’s work. Waterstops shall be compatible with all materials and shall not emit dangerous or incompatible fumes.

H. The Applicator is cautioned that certain membranes are incompatible with asphalt, coal-tar, and oil-based and plastic-based cements. Creosote and penta-based materials are also incompatible. Such materials shall not come in contact with the waterproofing membrane at any time. If such contact occurs, the material shall be cut-out and discarded. The Applicator should consult the Manufacturer with respect to material compatibility, precautions and recommendations.

I. Arrange work sequence to avoid use of newly-constructed waterproofing for storage, walking surface, and equipment movement. Where such access is absolutely required, the Applicator shall provide all necessary protection and barriers to segregate the work area and to prevent damage to adjacent areas. Provide HDPE protection and felt separation sheet (or PVC protection and felt separation sheet) shall be provided for all waterproofing areas which receive traffic during construction. Any damage which occurs to the waterproofing membrane and/or system is to be brought to the attention of the COTR and/or design professional and Manufacturer. All damage is to be repaired according to Manufacturer recommendations. The party responsible for damage shall bear the cost of repairs.

J. Prior to and during application, all dirt, debris and dust shall be removed from existing surfaces, either by vacuuming, sweeping, blowing with compressed air, pressure washing and/or similar methods.



K. All waterproofing materials, flashings, and metal work removed for construction shall be immediately taken off the site to a legal dumping area authorized to receive such materials.

L. If any unusual or concealed condition is discovered, stop work and notify the COTR and/or design professional and Manufacturer immediately, in writing.

M. Liquid materials such as solvents and adhesives shall be stored and used away from open flames, sparks and excessive heat, follow OSHA requirements.

N. Contaminants, such as grease, fats, oils, and solvents, shall not be allowed to come into direct contact with the waterproofing membrane. Any such contact shall be reported to Manufacturer.

O. Site cleanup, including both interior and exterior building areas below or adjacent to, or in any way affected by the construction, shall be complete and to the Authorities’ satisfaction.

P. All drains, electrical and mechanical penetrations through the membrane must be structurally stable and flashed prior to sheet installation.

Q. Verify that all drain lines are unblocked before starting work; report in writing any such blockage to the COTR and Membrane Manufacturer.

R. All areas stained, dirtied, and discolored or otherwise damaged due to the work shall be cleaned, restored, and replaced as required.

S. The Applicator should take necessary precautions when using adhesives around air in-takes. The smell of the adhesive could be a disturbance to the Authority and its occupants. It is the Applicator’s responsibility to notify the COTR and take the proper precautions.

1.10 SEQUENCING OF THE WORK

A. Coordinate Work in conjunction with the other trades by the timely performance of the work, including installation of sheet metal and protection layer(s). Coordinate with other trades to avoid damage to waterproofing membrane.

1. Do not proceed with installation of protection layers and concrete paver hard-scape cover over the completed sections of the waterproofing without the acceptance of the COTR, design professional, contractor, and Manufacturer.

2. Water tests of installed tank waterproofing membrane shall be successfully completed before proceeding with protection layers. Schedule water tests promptly to allow timely installation of protection layers (See Part 4, Item 4.2E).

3. Drains and Pipes: Coordinate with other contractors, the installation of drains as shown on the Drawings, including clamping ring flashing and associated waterproofing work. Ensure clamping rings of drains and pipes are properly anchored to the concrete surface.



B. Waterproofing applicator or installer shall review electrical and mechanical plans and schematics prior to bid and to starting shop drawings, to determine the following:

1. Water, sewer, gas, telecommunication lines, pipes, and cables which may penetrate the membrane; and

2. Floor drains, plumbing vent pipes, grounding wires, electrical conduit and general utility access which may penetrate the membrane.

C. Waterproofing applicator or installer shall coordinate placement with other subcontractors any penetrations through the completed waterproofing membrane assembly. Ensure the following items are coordinated:

1. Clusters of electrical conduit are separated by at least two inches clear spacing in all directions; and

2. Duct banks shall have clear spacing around each pipe equal to two times the diameter of said pipe.

1.11 WARRANTIES

A. Contractor’s Warranty: Supply the Authority with a minimum of five (5) year workmanship warranty for the membrane (PVC) work. The obligation of the warranty shall run directly to the Authority with a copy to the Membrane Manufacturer. Form(s) included at the end of this Section and are to be submitted without modification.

B. Manufacturer’s Warranty: Provide a Manufacturer’s labor and material warranty to the Authority at the successful completion of the Project. The Waterproofing Membrane Manufacturer shall warrant to Authority repair of any leaks in the waterproofing membrane resulting from defects in the membrane or workmanship for a period of ten (10) years.

PART 2 - PRODUCTS

2.1 WATERPROOFING MEMBRANE

A. The manufacturer of the thermoplastic waterproofing membrane system shall have a track record of producing and marketing a reinforced PVC sheet system for waterproofing applications for at least 10 years. Product must be UV stable and contain adequate biocide. Subject to this and other technical requirements, provide products of the following:

1. Cooley, Inc. 2. Product equals must be approved 10 days prior to bid. 3. Thermoplastic membrane: polyvinyl chloride (PVC) flexible sheets with woven

reinforcing. 4. Coolguard MPK (80-mil) KEE-Elvaloy Terpolymer Sheet, reinforced with a

polyester scrim.



B. Parameters ASTM Test Method Typical Physical Properties

Overall thickness, D 751 0.080 (2.0) inches (mm), min. Tensile Strength, psi. D 638 1,500 Elongation at Break, % D 638 240 MD, 240 CMD Seam Strength, % of D 638 90% Tensile Strength Retention of Properties D 3045 After Heat Aging Tensile Strength, % of original D 638 95% Elongation at Break, % of original D 638 95% Tear Resistance, lbf D 1004 21.3 Linear Dimensional Change, % D 1204 0 Weight Change after immersion D570 2.5 in water, % Static Puncture Resistance, D5602 Pass 56 lbs. (250 N) Dynamic Puncture Resistance D5635 Pass 117.7 ft0pdl (5 J)

C. Factory edges shall not have reinforcing exposed; sides of membrane rolls shall have encapsulated edge.

D. The membrane color shall be light on one side and dark on the other.

E. Flashing: Manufacturers shall provide un-reinforced and reinforced flashing sheets as required in the same thickness as field membrane.

F. Prefabricated Details: Inside/outside pre-molded corners, same mileage as membrane.

G. Adhesives

1. Grid Adhesive, adhesive for sub-membrane grid; material to be one-hundred (100) percent solids, two-part urethane, available in both vertical grade and horizontal grade viscosity.

H. Accessories

1. PVC coated heat weldable, Grade 316 sheet metal, capable of being formed into a variety of shapes and profiles. Material is a stainless steel sheet metal with an unsupported PVC membrane laminated on one side.

2. Termination Bar, heavy-duty 14 gauge, Grade 316, roll-formed stainless steel bar used to attach membrane to decks. The formed steel is pre-punched with holes every 1 inch (25 mm) on center to allow various fastener spacing options.

3. Aluminum Tape, a 2 inch (50 mm) wide pressure-sensitive aluminum tape used as a separation layer between small areas of asphalt contamination and as a bond-breaker under the cover-strip at SS joints.

4. Zamac Nailins Fasteners, ¼ x 1-1/4 inch (6.3 x 31.7 mm) fasteners for attachment of membrane, flashing, termination bars, and joints to concrete with plastic sheaths and Grade 316 stainless steel pins or equal.



5. PVC Discs, 4 inch (10.2 cm) diameter PVC discs for membrane attachment, with Grade 316 SS pins.

6. Prefabricated inside and outside flashing corners made of PVC membrane that are heat-welded to membrane or base flashings. Corners are a universal piece that can be used for inside or outside corner applications.

7. Pultruded fiberglass: Non corrosive termination bars for use in hydrostatic conditions.

8. Circular membrane patch welded over T-joints (three intersecting welds) formed by overlapping membranes greater than 60 mils (1.5 mm) in thickness.

9. High quality solvent cleaner used for the general cleaning of residual asphalt, scuff marks, etc., from the membrane surface.

10. PVC chord, a 5/32 inch (4 mm) diameter, grey-colored, flexible thermoplastic extrusion that is welded to the top surface of the PVC membrane and against the side of SS termination, used to hold the membrane in position.

11. Clamping rings and metal angles shall be Grade 316 stainless steel (SS), with oversized holes to allow core drilling through said holes for anchor bolt placement.

2.2 LEVELING, SEPARATION, AND PROTECITON LAYERS

A. A non-asphaltic, non-woven polypropylene felt leveling layer used between concrete and waterproofing membrane, VBC-350 DL by Barrier Bac, Inc.

B. A non-woven polypropylene felt separation layer used between waterproofing and sheet metal pans.

C. Protection Material Options:

1. HDPE, High Density Polyethylene, a 0.039 inch (0.991 mm) thick protection layer used for heavy duty protection of the waterproofing membrane from mechanical damage; or

2. 65 to 75 mil, composite polypropylene geotextile bonded to 16-mil HDPE core, VBC-350DL, by Barrier Bac, Inc

3. Geotextile: Non-woven polypropylene geotextile of uniform thickness and surface texture approved by Membrane Manufacturer with the following minimum physical properties and testing methods:

Physical Properties Values Test Method Thickness 285-mils ASTM D 1777 Unit Weight 22-ounce/square yard ASTM D 3776 Grab Tensile Strength 285 pounds ASTM D 4632 Elongation 85% ASTM D 4632 Trapezoid Tear Strength 135 pounds ASTM D 4533 Burst Strength 400 lbs/square inch ASTM D 3786 Chemical Resistance pH Value 2 to 13

A. Temporary Protection Board: shall be 3/8-inch thick sheets of pressure treated plywood. Provide adhesive or tape recommended and approved by the membrane manufacturer.



B. Concrete Protection Layer, as specified in Section 03 78 00, “Precast Concrete Pavers,” thickness as shown on the Contract Drawings, 2- inch (50.8 mm) concrete protection paver to protect the horizontal waterproofing system from damage in concrete tank(s).

2.3 MISCELLANEOUS

A. Sealants in Contact with PVC Waterproofing Product shall be approved by Manufacturer.

B. Temporary Seal-Off: sealants and techniques approved by Manufacturer.

C. Hose Clamp: stainless steel, for use at pipe or conduit penetrations.

D. Structural Mortar: Renderoc HBA accelerated setting, low slump mortar manufactured by Flosroc. Install in accordance with Manufacturer’s published recommendations for concrete and substrate repairs.

E. Pipe Flanges and Metal Angles:

1. Clamping rings shall be installed in two pieces with a factory overlap as shown on the plans. Clamping ring pipe flanges shall be installed around sides of the waterproofing membrane penetrated by the piping. Torque flanges/angles to develop sufficient clamping force (confining pressure) on the membrane to provide a hydrostatic seal. Torque values for nuts and bolts to be provided by membrane or gasket Manufacturer. Provide monolithic, un-seamed, sheet membrane between the clamping rings. Minimize layering of sheets and flow-able sealants under clamping ring assembly to maintain torque requirements.

2. Pipe flanges shall be fabricated to prevent damage to the waterproofing membrane following fastening, ensure rounded edges on flanges. Torque nuts in opposite/alternate pattern around clamping ring. Check torque values of nuts to ensure no loss of confining pressure of gasket.

3. Pipe flanges shall be fabricated from stainless steel and with oversized holes for core drilling through them to ensure alignment with epoxy set, anchor bolts in concrete. Fasteners and other hardware shall be stainless steel conforming to ASTM F 593. Alternate materials may be used for flange fabrication subject to approval from the COTR.

4. Bonded neoprene gaskets and washers, or other devices acceptable to the COTR, capable of ensuring the prevention of water intrusion under hydrostatic pressure along the fasteners shall be the responsibility of the contractor.

F. A two-part urethane pitches pocket filler.

G. Miscellaneous Fasteners and Anchors: All fasteners shall be of the same type as the metal being secured. In general all fasteners, anchors, nails, and straps, shall be of stainless steel. Fasteners are to be compatible with materials in contact with fasteners. All termination bar fasteners and anchors shall have a minimum embedment of 1-1/4 inches (31.7 mm) and shall be approved for such use by the fastener manufacturer. Fasteners for attachment of metal to concrete shall be all-metal with plastic sleeve for



expansion type fasteners. All fasteners shall meet Factory Mutual Standard 4470 for corrosion resistance.

H. Control and Monitoring Pipes: 1-inch nominal pipe size polyvinyl chloride (PVC) pipe schedule 40; ASTM D 1785, length as required based on concrete thickness. Provide with inside threaded pipe coupling and removable plug.

I. Hydrophilic Waterstop: Polymer-based seal, designed to undergo controlled expansion in the presence of moisture in combination with a grouting pipe. Type Combiject Expansion Waterstop or approved equivalent. The waterstop shall be defined as follows:

1. Size: two-inch wide by ¼-inch thick; 2. Perform in saltwater and shall have a water pressure resistance of two bars. 3. Compatibility with membrane.

PART 3 - EXECUTION

3.1 GENERAL

The waterproofing Applicator shall coordinate the installation so that each area is made weathertight at the end of each work period or onset of inclement weather.

3.2 EXAMINATION

A. Examine all surfaces scheduled to receive waterproofing membrane and flashing for roughness, contaminants, unsound structural substrates or other conditions that may impair the waterproofing application. Notify the COTR, copy Manufacturer in writing of any such conditions: do not commence work until all defects are remedied. Starting application in a given area shall constitute acceptance of substrate.

B. Do not allow bitumen or oil in any form to contact the thermoplastic membrane or other system components.

3.3 SUBSTRATE PREPARATION

A. General:

1. Prepare surface according to the criteria specified herein. 2. All surfaces shall be free of oils, grease and petrochemicals, which may have

occurred from other trades work, and previous or prior construction activities. 3. All concrete patches shall be cured a minimum of two (2) days and be 1,500-psi

in compressive strength before application of waterproofing system.

B. At Existing Structural Concrete:

1. Install 1-inch by 1-inch chamfer at all inside corners unless otherwise shown. 2. Provide a smooth finish equivalent to a smooth float finish or better.



3. Repair all joints, offsets, voids, cracks and spalled areas which are greater than 1/8-inch in width or depth with quick setting grout, mortar or approved equal.

4. Tie wire, nail heads, and other projecting objects shall be ground flush with the existing concrete prior to waterproofing installation.

5. Form tieholes shall be plugged flush with the concrete substrate. 6. Fins and projections greater than 1/32-inch shall be scrapped, ground down,

chipped, or other Manufacturer approved technique to be flush with the concrete substrate.

3.4 SUB-MEMBRANE CONTAINMENT GRID INSTALLATION

A. Applicator to install a test grid 12 inches (30.5 cm) wide by 4 feet long, 24 hours prior to starting actual grid installation. Do not start actual grid strip installation until a successful grid peel test is achieved. Consult with Manufacturer prior to grid application. Test the adhesion of each day’s grid installation by performing a peel test prior to starting the following day’s grid installation.

B. Install 12 inch (30.5 cm) wide sub-membrane containment grid in accordance with layout shown on the design drawings and approved shop drawings. Note that containment grid is to be installed at the base of all transitions, penetrations, pipe flanges and containment termination strips.

C. Fully-adhere strips to the substrate in a full bedding of Grid Adhesive as follows:

1. Chalk lines onto substrate to identify grid location. 2. Pour all of Part B into Part A container. Do not attempt to mix partial

quantities. Follow mixing directions that are provided with the product. Stir thoroughly with mixing blade provided to create pourable/trowel grade consistency. Do not thin with solvents or add foreign substances.

3. Apply the grid adhesive to the substrate using a ¼” square notched trowel. The adhesive shall be applied in a width approximate 12 inch (30.5 cm) wide with an adequate coverage to create a smooth condition for the flashing. Coverage rates of adhesive will vary with the substrate and temperature.

4. Apply grid membrane into the adhesive while still active. Fully embed the grid membrane into the adhesive and roll with silicone or metal roller. Keep top surface of grid membrane free of grid adhesive.

D. Grid Adhesive is available in both horizontal and vertical grades. In general use horizontal grade for grid strips that are primarily flat on the deck and vertical grade for grid strips that are installed onto walls or similar conditions.

E. Grid Adhesive must cure for 12-24 hours depending on temperature prior to hot-air welding to the grid strip.

F. For grid strip overlap weld, stop grid strip adhesion application 2 ft. from the overlap location, completely weld the overlap, then, continue the process. Do not weld membrane overlaps over un-cured grid strip adhesive.

G. After the grid adhesive has set up, install stainless steel termination bar fastened 6 inches (30.5 cm) on center with acceptable fasteners through the grid strip and into the



structural wall or deck, according to Manufacturer’s recommended details. Hot-air weld PVC cord onto the grid strip membrane on the penetration side of the termination bar. Weld a 4 inch (102 mm) wide membrane protection strip over bar ends and at bar intersections.

3.5 LEVELING LAYER INSTALLATION

A. Carefully inspect the substrate prior to installation of the leveling layer. The surface shall be clean and smooth with no excessive surface roughness, contaminated surfaces, or unsound substrates.

B. Install leveling layer over acceptable substrate, lapping all edges a minimum of 4 inches (10.2 cm).

C. Install only as much leveling layer as can be made weathertight in one day.

D. Fasten leveling layer to concrete wall using PVC discs and specified fasteners at a rate of 1 fastener every 3 square feet (0.3 square meter) or use latex adhesives.

E. The leveling layer felt is to be cut with either scissors or utility blades, the use of hot air welding equipment to cut the product is not allowed.

3.6 THERMOPLASTIC WATERPROOFING MEMBRANE INSTALLATION

A. Comply with Manufacturer’s most recent printed specifications and their specific recommendations for this project except as modified in this section.

B. At no time shall asphaltic materials be in contact with any PVC material of permanent installation. Equipment shall have no sharp edges and shall be clean and free of any asphaltic or coal tar products. Promptly remove any portion of PVC waterproofing contaminated by bituminous products.

C. Tradesmen and all others that work on waterproofing shall wear clean, soft-soled shoes, to avoid damage to the materials. Heed all manufacturers’ cautions and warnings in regards to product use. Membrane is slippery when wet or covered with frost, snow and ice. Take proper precautions.

D. Use standard size sheets to reduce the number of three-way overlaps. Obtain COTR’s approval of sheet sizes shown on shop drawings before ordering materials. Lay out work to minimize traffic over installed areas.

E. For vertical wall applications align waterproofing membrane on the top of the wall. Remove all packaging tape from the membrane. Drape membrane sheets down from the top of the wall; fasten top edge of sheets with bar too hold in place. As sheets drop, weld to PVC discs at 24 inches on center between bars. Install termination bar in each sheet seam overlap, extending down the wall.

F. Hot-air weld the waterproofing membrane to grid strips as shown on approved Manufacturer’s drawings.



3.7 HOT-AIR WELDING OF LAP AREAS

A. General

1. Adjacent sheets shall be welded in accordance with Manufacturer’s instructions. All side and end lap joints shall be hot air welded. Lap area shall be a minimum of 3 inches (76.2 mm) wide (1.5 inch weld) when machine welding (standard hot-air single weld), and a minimum of 4 inches (10.2 cm) wide (2 inch wide weld) when hand welding. Overlaps shall be with the flow of water where possible.

2. Welding equipment shall be provided by or approved by Manufacturer. All mechanics intending to use the equipment shall be trained and qualified and shall have successfully completed a course of instruction provided by Manufacturer’s representative prior to welding.

3. All surfaces to be welded shall be clean and dry according to Manufacturer’s instructions. No adhesive shall be present within seam lap areas.

B. Hand Welding

Hand welded seams shall be completed in three stages. Equipment shall be allowed to warm up for at least one minute prior to start of welding. Hand welds shall be a minimum 2 inches wide.

1. The lap may be tack welded as needed to hold the seam in place. 2. The back edge of the lap shall be welded with a thin, continuous weld to

prevent loss of hot air during the final welding 3. The nozzle shall be inserted into the seam at a 45 degree angle to the edge of

the membrane.

Once the proper welding temperature has been reached and the membrane begins to "flow," a hand roller is positioned perpendicular to the nozzle and pressed lightly. For straight seams, a 1½ inch (40 mm) wide nozzle is recommended for use. For corners and compound connections, the ¾ inch (20 mm) wide nozzle shall be used.

C. Machine Welding

Machine welded seams are achieved by the use of Manufacturer's automatic welding equipment. Machine welds shall be a minimum 1.5 inches wide. When using this equipment, Manufacturer's instructions shall be followed and local codes for electric supply, grounding and over current protection observed. Dedicated circuit house power or a dedicated portable generator is recommended. No other equipment shall be operated off the generator.

D. Machine Welding – Double Wedge Welder

1. Machine welded seams are to be achieved by the use of automatic double wedge welding equipment. When using this equipment, the manufacturer’s instructions shall be followed and local codes for electric supply, grounding and over current protection observed. The automatic wedge welding machines require 115 to 120 volts at 20 amps. The use of a dedicated portable generator is recommended.



2. Membrane shall be overlapped according to the requirements of the equipment. Overlaps shall be welded with acceptable double wedge welder. Double wedge welds shall be continuous and without interruption.

E. T-Joints (three-way overlaps)

Welding waterproofing membranes thicker than 60 mils (1.5mm) requires special attention in order to ensure quality T-Joints. The following steps must be followed:

1. Shave down the top edge of the second (middle) layer of membrane, to create a smooth transition for the top layer of membrane as it crosses perpendicular over the lap. For a wedge welded seam, the un-welded flap must be removed prior to shaving.

2. Fully weld a minimum 4 inches (10.2 cm) round or square (with rounded corners) patch of maximum 80 mil thick membrane centered at the T-Joint intersection. All membrane edges that will be covered by the patch, plus one inch beyond, must be shaved to provide a smooth transition for the patch.

3. Shaving or chamfering of the membrane edges can be done either with a hand held grinder with a joint planer, a chamfering tool available from Manufacturer, or by scraping gently with the hot nozzle of a hand welding tool.

F. Quality Control of Welded Seams

1. All completed welded seams shall be checked by the waterproofing Applicator after cooling for continuity using a rounded screwdriver or other suitable blunt object. Visible evidence that welding is proceeding acceptably is smoke during the welding operation, shiny membrane surfaces, and an uninterrupted flow of black material from the edge of completed joints. On-site evaluation of welded seams shall be made daily by the Applicator to locations as directed by the COTR and/or design professional or Manufacturer’s representative. Two-inch (50.8 mm) cross- section samples shall be taken a minimum of three times a day through completed seams. Correct welds display failure from shearing of the membrane prior to separation of the weld. Each test cut shall be patched by the Applicator at no extra cost to the Authority.

2. Double wedge welds shall be fully tested by the applicator prior to the installation of protection layers by pressurizing as follows:

a. Each seam shall be pressure tested as the installation progresses. For a standard warranty, the pressure test must be done in the presence of an approved Manufacturer’s technical representative.

b. The weld channel (between welds) at both ends of the seam shall be sealed by hand welding, or doubled over and clamped.

c. Insert pressure gauge tip into the weld channel. d. Test by applying internal air pressure into the weld channel. e. Test at 30 psi (206 kPa) for ten minutes. f. Repair seam if pressure falls below 27 psi (186 kPa) [10% maximum

loss] during the ten minute test. g. If the cause of seam failure can not be located or effectively repaired,

an 8 inch (20.3 cm) membrane cover strip must be hand welded over the failed seam.



3.8 MEMBRANE FLASHING

A. All flashings shall be installed concurrently with the waterproofing membrane as the job progresses. No temporary flashing shall be allowed without the prior written approval of the Manufacturer. Flashings shall be adhered to compatible, dry, smooth, and solvent-resistant surfaces.

B. Complete the entire waterproofing assembly and flashing in a single working day; avoid exposure of any components to rain, snow, or dew. Provide temporary cut-offs around exposed edges and at incomplete flashing areas from the new membrane to the structural walls and deck. Remove the cut-offs completely before proceeding with subsequent work. If rain threatens during the day, or in an emergency, protect the unfinished exposed waterproofing and flashing components.

C. All flashing membranes shall be mechanically fastened along the top edge according to approved Manufacturer’s details. Expansion fasteners with plastic sheaths and stainless steel pins (Zamac Nailin®) set in pre-drilled holes shall be used to secure flashings to concrete surfaces.

D. All flashing membranes shall be consistently secured to substrates. All interior and exterior corners and miters shall be cut and hot-air welded into place. No bituminous elements shall be in contact with the waterproofing membrane, unless asphalt resistant membrane is used.

E. All flashings shall be hot-air welded at their joints and at their connections with the wall membrane.

3.9 METAL FLASHINGS

A. Complete all metal work in conjunction with waterproofing and flashings so that a watertight condition exists daily.

B. Metal shall be installed to provide adequate resistance to bending and allow for normal thermal expansion and contraction.

C. Metal joints shall be watertight and per contract drawings.

D. Metal flashings, where shown, shall have a 4 inch (10.2 cm) minimum nailing flange and shall be fastened into concrete with acceptable concrete anchors 6 inches (15.2 cm) on center staggered. Fasteners shall penetrate into concrete a minimum of 1 inch (25.4 mm).

E. Adjacent sheets of PVC coated metal shall be spaced 1/4 inch (6.3 mm) apart. The end joints of the metal shall be fastened 6 inches (15.2 cm) on center. The joints shall be covered with 1 inch (25.4 mm) wide aluminum tape. A 4 inch (10.2 cm) wide membrane flashing strip shall be hot air welded over the joint.

3.10 TEMPORARY CUT-OFF



A. All flashings shall be installed concurrently with the membrane in order to maintain a watertight condition as the work progresses. When a break in the day’s work occurs in the central area of a project, install a temporary watertight seal. The new membrane shall be sealed to the substrate so that water will not be allowed to travel behind the new waterproofing. When work resumes, the contaminated membrane shall be removed from the work area and disposed of off site. None of these materials shall be reused in the new work.

B. As an alternative the temporary seal can be left in place, overlap with leveling layer over tie-in by 6 inches (15.2 cm) and waterproofing membrane over felt layer by 4 inches (10.2 cm).

C. If inclement weather occurs while a temporary waterstop is in place, the contractor shall provide the labor necessary to monitor the situation to maintain a watertight condition.

D. If any water is allowed to enter under the newly-completed waterproofing, the affected area shall be removed and replaced at the Applicator’s expense.

3.11 WATER TESTING

A. A water test shall be conducted only after the area to be tested has been inspected and accepted for water test. Dry conditions under the membrane must be verified by test openings and monitoring tubes prior to conducting the water test. No protection layers are to be in place at time of the water test.

B. It is the contractor’s responsibility to confirm that the deck will support the weight of the water.

C. The size of area tested is to be determined by the applicator. It is recommended that the water tests be conducted in a reasonable size area as work progresses. The slope of the substrate will impact the size of the area that can be tested. In no case shall the water be allowed to approach the top height of the waterproofing flashing termination.

D. Test for leaks by plugging the drains and covering the entire area with a minimum of 2 inches (50.8 mm) of water above all penetrations or to a height as directed by the COTR. Let the water stand for a minimum of 72 hours. An acceptable blue dye may be added to the test water to differentiate between water entries from other sources. In cold weather, the use of environmentally friendly anti-freeze agents or salts, or continuous water circulation with pumps, is recommended to prevent freezing.

E. Upon completion of water tests, the area shall be drained. Examine the membrane welds for signs of leakage and walk all membrane seams watching for signs of “bubbling” or expulsion of water. Critically examine all seams in flat areas of standing water.

F. Test openings or monitoring tubes shall be made at low points of the tested area, and other areas as necessary, after the area is drained. Examine substrate at openings to check for leakage. The applicator shall patch and probe all test openings at no cost to the Authority.



G. Should leaks be discovered, the Applicator shall locate leak source(s) and make repairs according to the following guidelines:

1. Open wet area and allow deck to dry. 2. Dry out or replace wet leveling layer. 3. Seal membrane, thoroughly probe hot-air welds, and conduct a new water test. 4. All costs associated with the re-work shall be borne by the Applicator.

H. Water tests must be judged to be successful by the COTR, waterproofing contractor, the waterproofing consultant, and Manufacturer before the installation of any subsequent components of the waterproofing system.

3.12 ELECTRIC FIELD VECTOR MAPPING (EFVM)

A. Provide EFVM leak detection in addition to water test if desired on waterproofing membrane for testing of capillary defects and/or breaches in the membrane. Testing is to be administered by a qualified testing agency.

1. International Leak Detection, Ltd. 11 Bartlett Drive Ajax, Ontario, Canada L1S 4V2 (905) 428-8283

B. Test the entire membrane on an area-by-area basis as required by the Manufacturer.

C. Wet the entire membrane test area with water prior to the start of each test and maintain wet for the duration of testing. Verify integrity of the membrane at drains and penetrations by localized testing.

D. If a breach is detected, the Applicator shall make repairs according to the following guidelines:

1. Open wet area and allow deck to dry. 2. Dry out or replace wet leveling layer. 3. Seal membrane, thoroughly probe hot-air welds, and conduct new water test. 4. All costs associated with the re-work shall be borne by the Applicator.

3.13 SEPARATION LAYER INSTALLATION

A. A separation layer shall be applied over the completed waterproofing membrane and overlapped a minimum of 4 inches (10.2 cm). Separator felt can be spot adhered to waterproofing membrane with adhesive or supported from the top of the wall.

B. The separation layer felt is to be cut with either scissors or utility blades. The use of hot air welding equipment to cut the product is not allowed.

3.14 PROTECTION LAYER INSTALLATION



A. Install protection layers over completed membrane assemblies as soon as possible. Coordinate this work with COTR and Manufacturer’s representative to allow inspection and acceptance of membrane and water tests before installation of protection layers. Attach and seal protection layer over floor waterproofing membrane and terminations to prevent entry of debris.

B. PVC protection layer: Install the 0.051 inch thick (1.295 mm) protection layer over the membrane and/or the separation layer. Overlap the protection layer a minimum of 4 inches (10.2 cm). Overlaps shall be with the flow of water where possible. Protection layer laps shall be hot air welded when concrete is to be poured directly over the protection layer.

C. HDPE: Install polyethylene protection layer over the membrane and/or the separation layer. Overlap the protection layer a minimum of 4 inches (10.2 cm). Overlaps shall be with the flow of water where possible. Protection layer laps shall be hot air welded when concrete is to be poured directly over the protection layer. Install subsequent layers or overburden immediately whenever possible. Excessive wrinkling may occur if HDPE is allowed to remain exposed to strong sunlight or heat.

3.15 CONCRETE PROTECTION LAYER INSTALLATION

A. Install a 2-inch (50.8 mm) thick flowable concrete fill mix as a protection layer over the waterproofing system and protection layers if approved by the waterproofing consultant. The flowable fill should be capable of providing 4000 psi compressive strength depending on design mix. The contractor shall submit the proposed mix to the COTR for acceptance prior to installation.

3.16 INSTALLATION OF TEMPORARY PROTECTION BOARD

1. Areas not immediately covered by (2) two-inch protective concrete paver shall be protected by temporary protective layer.

2. Install 3/8-inch protection board with butted joints over membrane protective layer covering waterproofing membrane before starting subsequent construction operations, but after inspection of the waterproofing consultant or by the COTR. Apply protection boards using an adhesive or double faced tape. Contractor shall ensure that waterproofing membrane, membrane protection layer and protection board are compatible.

3.17 CLEANING

A. Waterproofing materials, flashings, and metal work shall be removed from the construction site and taken to a legal dumping area authorized to receive such materials.

B. Site clean-up, including both interior and exterior building areas below or adjacent to, or in any way affected by the construction, shall be completed to the Authorities satisfaction.



C. Areas stained, dirtied, and discolored or otherwise damaged due to the Work shall be cleaned, restored, and/or replaced as required.

PART 4- CONTRACTOR’S QUALITY CONTROL REQUIREMENTS


A. Conform to all applicable provisions of Division 1 Section “Quality Requirements.”

B. The following describes the minimum inspection and testing required in the Contractor’s Quality Control (CQC) Plan and Program for the work of this Section and is for CQC only. The implementation of the Contractor Quality Control program does not relieve the Contractor from the responsibility to provide the work in accordance with the Contract Documents, applicable codes, regulations and governing authorities.

C. The contractor’s CQC plan and program shall include, but not be limited to, the following testing and inspection elements. These elements are provided as a minimum starting point for the contractor to use to generate his/her complete CQC Program.

4.2 FIELD TESTING GENERAL REQUIREMENTS

A. Arrange with the Membrane Manufacturer to have the services of a Waterproofing Installation Supervisor at the site to accept concrete substrates and other surfaces before installation of waterproofing materials. The Waterproofing Installation Supervisor shall be approved by the Membrane Manufacturer, and shall check and test all heat-welded seams before the water tests, and prior to installation of protection layers. The Waterproofing Installation Supervisor shall issue written reports. The Contractor shall include all cost for the Waterproofing Installation Supervisor, including expenses, in his/her bid price.

B. Applicator will provide to the jobsite a portable tensiometer for testing the peel and shear strength of the field-welded seams on a daily basis. The Applicator shall include all costs for seam testing in his/her bid.

C. Monitor finishing layer installation and covering operations to assure no damage is done to the waterproofing membrane. Alert all parties concerned of any activities, which might adversely affect the performance of the waterproofing system.

D. Prior to demobilization from the site, the Work shall be reviewed by the COTR and Contractor. All defects shall be noted and non-compliance with the Specification shall be brought to the attention of the Membrane Manufacturer for their recommendations, and shall be itemized on a punchlist. These items must be corrected immediately on a punchlist by the Contractor prior to demobilization to the satisfaction of the COTR and Membrane Manufacturer.

E. Water testing of the completed waterproofing system on the tank floors for a minimum of 72-hours is required. Water testing shall be witnessed and confirmed in



writing by the COTR, the Waterproofing Contractor, and the Membrane Manufacturer’s Representative.

1. Conduct water test in concrete tanks to top of membrane. Test must be judged to be successful by the COTR and the Membrane Manufacturer before installation of subsequent components of the waterproofing system.

2. Test for leaks by plugging drains and filling to a minimum 50-mm (two-inch) depth from top of membrane. Let water stand for 72 hours.

3. Drain water from test area and mark areas where seams are suspect. 4. Examine spaces adjacent for signs of leakage, and walk all membrane seams

watching for signs of bubbling or expulsion of water. Critically examine all seams in flat areas of standing water.

4.3 INSPECTION PERSONNEL

A. The inspector shall have a minimum of five years experience in the installation of flexible membranes in underground waterproofing tank installations and must be proficient in the supervision of testing procedures.

4.4 INSPECTION AND TESTING

A. Surface Inspection and Acceptance:

1. Inspect all surfaces to which waterproofing will be applied prior to waterproofing installation for compliance with the surface preparation criteria defined herein.

2. Inspect area to be waterproofed in presence of the waterproofing installer’s quality control representative and the COTR.

3. Do not allow installation of any element over the waterproofing system until all deficiencies have been corrected. Re-inspect area after corrective action has been taken.

4. Do not allow waterproofing installation outside an approved area. 5. Use approved Surface Acceptance Forms to release an area for waterproofing

installation. Obtain the waterproofing installer’s quality control representative and the COTR’s signature on the Surface Acceptance Form.

6. Distribute signed Surface Acceptance Forms with the Inspector Daily Reports in compliance with Section 014000, “Quality Requirements.”

B. Installation Inspection:

1. During installation of any element of the waterproofing system, inspect the following:

a. Use of specified materials. b. Proper storing and handling of material. c. Ambient temperature. d. Installer qualifications. e. Seam direction and layout as per contractor shop drawings. f. Verify number of attachments.



g. Proper overlap of membrane at seams for welding. h. Application of welds as specified. i. Installation of corner patches. j. Execution of details as per shop drawing or Contract Drawings. k. Location and elevation of terminations. Provide as-built documentation

as specified herein and forwarded to the COTR.

2. Installation of protective layer.

C. Testing:

1. Perform tests as installation progresses. Repair and retest seams that fail before continuing installation.

2. At double welds, perform test by applying internal air pressure between seams as specified herein.

3. At single welds, including heat welding at waterbars or special fittings, check all welds for continuity by inspection methods as specified herein.

4. Reject defective work and request repair. 5. Use approved Waterproofing Installation Acceptance Form to release an area

for waterproofing installation. Obtain the waterproofing installer’s quality control representative and the COTR’s signature on the Waterproofing Installation Acceptance Form.

6. Distribute signed Waterproofing Installation Acceptance Forms with the Inspector Daily Reports in compliance with Section 014000, “Quality Requirements.”

D. Protection and Pre-Placement Inspection:

1. Protect waterproofing with protective concrete as soon as reasonable after completion of waterproofing installation.

2. Check for and relieve, if necessary, water build-up behind membrane with established methods prior to concrete paver placement.

3. Do not allow penetration of waterproofing for any reason. 4. Do not allow penetration of protective concrete for setup of floor and wall

formwork or scaffold.

4.5 PRE-INSTALLATION MEETING

A. Before installation of waterproofing and associated work, meet at project site with installer, membrane manufacturer, installers of related work, and other entities concerned with waterproofing installation performance, including, where applicable, test agencies, governing authorities, and the COTR.

1. Comply with the requirements in Section 013100, “Project Coordination and Meetings.”

B. Record discussions and agreements and furnish copy to each participant. The following items shall be reviewed:

1. Start date, schedule of work to be performed;



2. Chain of command when disputes and issues occur; 3. Authority of Inspector; 4. Summary of what the contents of the daily report will be; 5. Procedures for testing – what constitutes a failure; 6. Expectations of care taken when working around membrane; and 7. Special details and change of condition issues if they should occur.

C. Pre-installation conference will be held in accordance with the Contractor’s CPM schedule as approved by the COTR or as otherwise directed by the COTR.




CONTRACTOR’S WATERPROOFING WARRANTY

AUTHORITY ___________________________________________________________________________ ADDRESS ___________________________________________________________________________ PROJECT ___________________________________________________________________________ PROJECT ADDRESS ___________________________________________________________________________ DATE OF FINAL ACCEPTANCE ___________________________________________________________________________ WATERPROOFING CONTRACTOR ___________________________________________________________________________ ADDRESS ___________________________________________________________________________ PHONE NO: ___________________________________________________________________________ This Warranty stipulates that the above-named Waterproofing Contractor shall, during a period of five (5) years from the date of final acceptance of the Work, maintain the waterproofing membrane and flashing systems in a watertight condition and repair all defects which result from faulty workmanship or defective materials, without further cost to the Authority; including the removal, disposal, and replacement of finish materials, concrete, or other overburden materials.

Excluded from this Warranty may be any and all damage to the buildings or their contents from water leakage and/or by acts or omissions of the Authority; fire, lightning, hailstorms, or other unusual phenomenon of the elements; movements or failure of the supporting building structure that causes membrane or flashing failure. Before expiration of the above Warranty period, the Waterproofing Contractor shall inspect the Project in the presence of the Authority’s Representative and make the necessary correction of all deficiencies not considered normal. If installation is inaccessible or otherwise covered, and visual inspection is not possible or practical, the Authority will inform the Waterproofing Contractor of leaks or defects at least one month prior to the expiration of the Warranty period. The Warranty shall remain in force until the necessary repair work has been done.

WATERPROOFING CONTRACTOR _________________________________________ Signed _________________________________________ Title _________________________________________ Date



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CHEMICAL RESIN INJECTION GROUTING 07 15 00 1

SECTION 07 15 00 - CHEMICAL RESIN INJECTION GROUTING

PART 1 - GENERAL

1.1 DESCRIPTION OF WORK A. Seal (wet and dry) fine cracks and joints in concrete by pressure injecting chemical resin into

the walls and floor areas indicated to prevent water leakage into the tanks. Work includes, but not limited to, the following:

1. Removal of all deposits of chemicals, oil and other foreign materials from walls and floor

by power washing and/or steam cleaning. 2. Injection of chemical resin to seal all the cracks and joints in all the cracked areas. Inject

construction joints between slabs and walls as well as all other cracks and joints in slab and walls. Inject chemical grout through the slab and walls to create a positive side water barrier where required to stop leakage. Include all associated dewatering needed to perform the work.

3. Clean all the work areas after completion. 4. For bidding purposes, contractor to include 50 lineal feet per tank in his/her bid. A total

of 200 lineal feet shall be included in the bid for all four tanks.

1.2 REFERENCES

A. American Society for Testing and Materials (ASTM). American National Standard Institute (ANSI). B. Related Sections: 1. Section 03 78 00, Precast Concrete Pavers 2. Section 07 13 54, Thermoplastic Sheet Waterproofing 3. Section 07 13 64, Mechanically Fastened Thermoplastic Sheet Waterproofing 4. Section 07 15 00, Chemical Resin Injection Grouting

1.3 SUBMITTALS

A. Product Data: Provide manufacturer’s information and technical data on the waterproofing materials.

B. Samples:

1. Injection sealant materials, 1 each type. 2. Packers.

C. Quality Control Submittals:



1. Certificates: Furnish manufacturer’s certification that materials meet or exceed specification requirements, including certified test laboratory reports as necessary for compliance with the requirements. 2. Manufacturer’s Instructions: Furnish manufacturer’s literature, specifications, and application instructions. 3. Procedure: Submit written description of water-proofing procedures and operations sequencing based on manufacturer’s requirements prior to commencing the Work. 4. Submit intent to guarantee document with a performance guarantee against water penetration through waterproofing system for 2 years with any necessary replacement material and labor supplied at no cost to the Owner.

D. Guarantee:

1. Submit applicators guarantee and manufacturer’s warranty.

1.4 QUALITY ASSURANCE A. Qualifications: Company specializing in the waterproofing repair of cracks shall have a minimum of three years experience and at least five similar installations of equal magnitude that have proven successful in all respects for a period of at least three years. Contractor shall be trained by the waterproofing manufacturer and certified in order to obtain the manufacturer’s warranty. B. Manufacturer’s Representative: All work of this Section shall be performed under the supervision of the waterproofing material manufacturer’s representative. The representative shall attend pre-construction meetings and make regular visits during the course of construction to ensure that method of installation is acceptable so that warranty will be obtained.

1.5 DELIVERY, STORAGE, AND HANDLING A. Deliver all materials in the manufacturer’s sealed original container’s bearing the manufacturer’s name and product identification in a manner to prevent damage by breakage, water or moisture. B. Store and handle all products of this section in a strict compliance with the manufacturer’s instructions.

1.6 ENVIRONMENTAL REQUIREMENTS A. Do not apply if the temperature is below 50°F or above 85°F unless the material manufacturer is consulted for recommendations.

1.7 GUARANTEE AND WARRANTY



A. Contractor’s Guarantee: Two-year written guarantee covering defects in materials and workmanship. Maintenance Bond shall be provided for the entire two-year period and shall be equal to the original cost of installation. B. Should any defects develop or any leaks occur in the Work within the guarantee//warranty period, such defects or leaks shall at once be remedied and made good without cost or expense to the Owner.

PART 2 - PRODUCTS

2.1 MANUFACTURERS

A. BBZ, USA, Greenstreak 3400 Treecourt Ind. Blvd. St. Louis, MO 63129 (1-800-814-4498) B. DeNeef Construction Chemicals 5610 Brystone Drive Houston, TX 77041 (1-713-896-0123) C. Strata-Tech, Inc. 3601 104th Street Des Moines, IA 50322 (1-615-251-7770)

2.2 MATERIALS

A. Products

1. Polyurethane Gel

a. Two-component polyurethane resin capable of sealing large cracks and active leaks. Material shall be chemically resistant. b. Material shall be Duro-Rapid by BBZ, Flexseal 101 by DeNeef or Stratathane ST-526.

PART 3 - EXECUTION

3.1 EXAMINATION

A. Examine all adjoining work on which this Work is in anyway dependent for proper installation and workmanship. Report to the COTR any conditions that prevent the performance of this Work.



3.2 SURFACE PREPARATION AND PROTECTION

A. Remove paint, oil, and foreign material off all concrete surfaces of area to be waterproofed prior to injection using abrasives and/or steam cleaning. Cleaning shall be to a degree acceptable to the waterproofing manufacturer.

B. Protect adjacent areas from chemicals.

C. Keep area dry by mopping and pumping in order to place material and determine crack location.

D. Clean surface of injection area to locate crack.

E. Preparatory Work

1. Joint/Crack Injection

a. Drill holes diagonally at a 45° angle to intersect crack or joint. Hole diameter shall suit injection packer size. Injection packer shall be acceptable to the grout manufacturer. b. Distance from starting of hole to crack or joint shall be equal to one-half the thickness of the structural slab or wall. c. If the repair is at a crack, holes should be spaced on both sides to ensure that at least one-half of the total number of holes shall intersect the crack. d. Spacing of holes shall be dependent upon crack width and chemical grout material viscosity to ensure continuity of seal within the crack or joint. Spacing of holes should not exceed 1’-6” on center, unless demonstrated to be effective at a greater spacing.

3.3 INJECTION WORK

A. Prepare components as per manufacturer’s instructions. Add accelerator to suit field conditions, including, but not limited to, water flow, surface being injected, ambient temperature, crack or joint width, etc. Process chemical resin material wearing appropriate protective gear, including gloves, mask or goggles, and appropriate clothing. Follow manufacturer’s recommendation for product safety guidelines.

B. For cracks and construction/cold joints, flush the crack with clean water prior to injection of the resin. Typical pressure needed to flush a crack shall be between 200 and 300 psi. The flushing may reveal blind drill holes, voids, cavities, honeycombs that require special treatment. Modify application procedure as required. After flushing is completed at one injector, the Contractor shall repeat the procedure at the next injector until all have been flushed.

C. Injection pressures shall be kept as low as possible to allow material to thoroughly permeate the full depth of the crack or joint and/or to fill the interstitial void spaces in the soil behind the wall/slab.

D. If crack or joint continues to leak, drill hole(s) in accordance with above procedures at the leaking segment(s) and repeat procedures for injection.



E. Remove the ports after work is complete. Remove at least 1” of resin material from the top 1” of the hole of resin material, and fill hole with hydraulic cement, matching the existing concrete surface.


A. Clean all adjacent areas of excess material; powder, resin, and droppings.

END OF SECTION – 07 15 00



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SHEET METAL FLASHING 07 62 00 - 1

SECTION 07 62 00 – SHEET METAL FLASHING

PART 1 - GENERAL


A. Drawings, Contract Provisions, Special Provisions, Supplementary Conditions, and other Division 01 Specification Sections apply to this Section.

1.2 SUMMARY

A. This Section includes the following:

1. Sheet metal flashings and spillway pans; 2. Accessories; 3. Fasteners and attachment devices; and 4. All other flashings as indicated or required.

B. Related Sections: Other specification sections, which directly relate to the Work of this Section Include, but are not limited to, the following:

1. Division 3, Section 03 78 00 Precast Concrete Pavers 2. Division 7, Section 07 13 54 Thermoplastic Sheet Waterproofing 3. Division 7, Section 07 13 64 Mechanically Fastened Thermoplastic Sheet Waterproofing 4. Division 7, Section 07 15 00 Chemical Resin Injection Grouting

1.3 QUALITY ASSURANCE

A. Factory shall have capability to show conformance with National Coil Coater’s Association Technical Bulletins for factory color-coated steel.

B. Manufacturer to provide applied protection for finished color-coated sheet metal by means of a strippable plastic film.

C. Sheet metal items not specifically noted on the Drawings or in the specifications shall be in accordance with recommendations of The Architectural Sheet Metal Manual published by Sheet Metal and Air-conditioning Contractors National Association, Inc. (SMACNA). D. Conduct welding in accordance with standard practices outlined in American Welding Society code for Welding in Building Construction. All welds shall be completed by an AWS certified welder. Submit certification including date qualified, and the name of the firm and individual certifying the qualification tests. E. Fabricator and Installer: A firm specializing in sheet metal flashing work with then (10) years of successful experience in installation of specified types of sheet metal flashings.



F. Except as modified by governing codes and by the Contract Documents, comply with the applicable provisions and recommendations of the following: 1. SMACNA “Architectural Sheet Metal Manual”. 2. International Nickel Company “Stainless Steel Roofing, Flashing and Accessories Volume 3”. 3. ASTM B209 – Aluminum and Alloy Sheet and Plate. 4. NRCA (National Roofing Contractors Association) – Roofing Manual.

1.4 SUBMITTALS

A. General: Submit the following in accordance with the Contract Provisions and Division 01 Specification Sections.

B. Product data, Flashing, Sheet Metal, and Accessories: Manufacturer’s technical product data,

installation instructions and general recommendations for each specified sheet material and fabricated product and other data as may be required to show compliance with the Contract Documents.

C. Samples of the following flashing, sheet metal, and accessory items:

1. 12” length samples of skirting and/or pan assemblies, form to profiles indicated. 2. 12" length samples of sheet metal items; form to profiles indicated. 3. Accessories: Fasteners, anchor bars, trim strips, anchors, nails, screws, etc. 4. 12” length of double sided adhesive (DSA) foam tape.

D. Shop Drawings: Submit complete shop drawings showing pan configurations and sheet metal

work. Indicate material profile, jointing pattern, jointing details, fastening methods flashings, terminations, transitions, installation details and relationship of flashing materials to adjacent construction. 1. Layouts shall be at scale of ¼” per foot; details at scale 3” per foot minimum.

E. Shop Drawings: Submit shop drawings of metal flashings and accessories. Show complete

information concerning fabrication, installation, joint details and fastening, and other information required. Indicate layout, profiles, and anchorage details, including major counterflashings, trim pan units. Provide layouts at 1/4” inch scale and details at 3” inch scale.

F. Setting Drawings: Provide setting drawings and templates for the location of items that are to be

embedded in or anchored to concrete or masonry prior to sheet metal installation. G. Statement of Application: Submit copy of statement, signed by Contractor and Subcontractor on

an approved form, stating that the work complies with this Specification, and that the installation methods complied with the manufacturer’s printed instructions and were proper and adequate for the conditions of installation and use.

H. Maintenance Manual: Submit maintenance manuals complying with the requirements of

Division 01, Section “Operating and Maintenance Data”, describing the materials, devices and procedures to be followed in cleaning and maintaining each flashing and sheet metal flashing



type, for use during construction and for use by the Authority after acceptance of the Work. Include manufacturer’s data describing the actual materials, finishes and all other major components used in the Work.

1.5 DELIVERY, STORAGE, AND HANDLING

A. Store flammable materials in conformance with fire codes and in a manner that will not create a potential fire hazard.

B. Exercise care during fabrication and erection to avoid damage to the finished surface. C. Store sheet metal in manner that will protect it from exposure to the sun up until the time of

installation. D. Deliver materials in tagged bundles or in manufacturer’s unopened containers fully identified to

show name, brand, type, grade and thickness. Store, protect and keep materials dry.

1.6 PROJECT CONDITIONS

A. Coordinate work of this section with interfacing and adjoining work for proper sequencing of each installation. Ensure best possible weather resistance and durability of work and protection of materials and finishes.

B. Construction Schedule: Install sheet metal as soon as possible after membrane work has been

completed. Sheet metal work shall be fully complete by the given completion date.

1.7 PROTECTION

A. Coordination: Coordinate work of this section with interfacing and adjoining work for proper sequencing of each installation. Ensure best possible weather resistance and durability of the work and protection of materials and finishes.

B. The installer shall be responsible for worker safety when the sheet metal work is in progress. The

Project Foreman shall be thoroughly familiar and follow the guidance and instructions contained in the latest edition of "Passport to Safety" publication published by the National Roofing Contractors Association (NRCA) and all safety regulations of jurisdictional authorities.

C. Protection: 1. Prevent damage to new or existing materials, including protection from damage by ladders

and other equipment. Potentially damaging materials such as metal scraps, acid flux, and other debris shall not be permitted to come into contact with the liner membrane surface.

2. Suitable fire extinguishing equipment shall be immediately available at all locations where soldering, welding, or cutting equipment is used.

3. Maintain a fire watch wherever soldering, welding, or cutting is performed.



1.8 WARRANTIES

A. General: Warranties and guarantees specified in this Article shall not deprive the Authority of other rights the Authority may have under other provisions of the Contract Documents and are in addition to and run concurrent with other warranties made by the Contractor under requirements of the Contract Documents.

B. Provide sheet metal installer's written guarantee agreeing to replace/repair defective materials

and workmanship, including leakage of water, abnormal aging or deterioration of materials and other failures of all sheet metal work (other than copings and fascias) to perform as required within five (5) years after date of acceptance of the installation.

C. Provide coping manufacturer's written warranty stating that coping assembly system work is free of defects in materials and workmanship, will resist blow-off due to conditions within stated design limits, (wind up to 100 miles per hour), excluding failure of substrate, acts of negligence, vandalism, etc. Provide warranty based on independent certified testing for design and performance criteria specified herein. Warranty period shall be twenty (20) years from date of acceptance of the work

PART 2 - PRODUCTS

2.1 SHEET METAL FLASHING

A. Stainless Steel: ASTM A666, Type 316, 20 gauge, dead soft fully annealed except where harder temper required for forming or performance; 0.036 inches thick unless otherwise shown, finish No. 2D.

B. Other Materials: As hereinafter specified.

C. Accessories: 1. Concealed/Splice Plates: Minimum 0.050" Thickness stainless steel sheet, 6" minimum

length with factory applied dual non-curing sealant strips for concealed installation; finish shall match panning.

2. Anchor Clips: 12" wide, 20 gauge Grade 316 stainless steel, 1"-0" on center. 3. Fasteners: As recommended by system manufacturer.

2.3 ACCESSORY MATERIALS

A. Fasteners: Stainless steel tamper-proof type with captive sealer washer as indicated on the Drawings or as required.

B. Sealant: Sikafles-15LM, Low-modulus, high performance, one-component, polyurethane base,

non-sag, elastomeric sealant, complying with ASTM C920, Type S, Grade NS, Class 25; color as selected by Architect. Manufacturer: Sika Corporation or equal by Hyload, Inc.

1. Primer: As required by sealant manufacturer, based upon the type of sealant, the condition

of the substrate and the conditions of application.



2. Cleaners for Non-Porous Surfaces: provide non-staining chemical of type which are acceptable to manufacturing of sealants and sealant-backing materials which are not harmful to substrates and adjacent non-porous materials and which do not leave oily residues or otherwise have a detrimental effect on sealant adhesion or in-service performance.

D. Solder: ASTM B32; for use with stainless steel, proved 60 – 40 tin/lead solder, with acid-

chloride type flux, except use rosin flux over tinned surfaces. E. Fasteners: Screws, rivets and nails shall be of same materials as sheet metal or of compatible

material. Match finish of exposed heads with material being fastened. F. Epoxy Seam Sealer: 2 part non-corrosive metal seam cementing compound, recommended by

metal manufacturer for exterior/interior nonmoving joints including riveted joints. G. Mastic Sealant: Non-hardening, non-skinning, non-drying, non-migrating asbestos free

polyisobutylene sealant. H. Paper Slip Sheet: 5 lb. rosin-sized building paper. I. Polyethylene Underlayment: Minimum 6 mil carbonated polyethylene film resistant to decay

when tested in accordance with ASTM E154. J. Dielectric Separator: One of the following: 1. "Carbomastic 90" (Carboline Co.); 2. "Bitumastic 50" (Kop-Coat, Inc.); or 3. "Jennite J-16" (Maintenance Inc.).

2.4 FABRICATED UNITS A. General Metal Fabrication: Shop-fabricate work to greatest extent possible. Comply with details

shown and with applicable requirements of SMACNA "Architectural Sheet Metal Manual" and other recognized industry practices. Fabricate for waterproof and weather-resistant performance, with expansion provisions for running work, sufficient to permanently prevent leakage, damage or deterioration of the work. Form work to fit substrates. Comply with material manufacturer instructions and recommendations for forming material. Form exposed sheet metal work without excessive oil-canning, buckling, and tool marks, true to line and levels indicated, with exposed edges folded back to form hems.

B. Seams: Fabricate non-moving seams in sheet metal with flat-lock seams. Form seams, and

solder. Rivet joints for additional strength where required. C. Expansion Provisions: Where lapped or bayonet-type expansion provisions in work cannot be

used or would not be sufficiently water/weatherproof, form expansion joints of intermeshing hooked flanges, not less than 1 inch deep, filled with mastic sealant (concealed within joints).



D. Sealant Joints: Where movable, non-expansion type joints are indicated or required for proper performance of work, form metal to provide for proper installation of elastomeric sealant, in compliance with SMACNA standards.

E. Separations: Provide for separation of metal from non-compatible metal or corrosive substrates

by coating concealed surfaces at locations of contact, with a coating of dielectric separator or other permanent separation as recommended by manufacturer/fabricator.

2.5 FASTENERS

A. Fasteners shall be of same material as flashing on which they are used and shall be of type and

size as shown on Drawings or specified herein unless noted otherwise. Exposed fasteners through sheet metal shall match new sheet metal.

B. Fasteners exposed to the weather shall have neoprene washers under heads to ensure

watertightness. C. Sheet Metal to Sheet Metal: Self-tapping screws of 13mm (1/2-inch) length and a minimum #3

diameter. D. Sheet Metal to Concrete or Masonry: Gripcon, or Equal, stainless steel specially threaded

anchors, 6 mm (1/4-inch) minimum diameter, length to penetrate masonry minimum 25 mm (1-inch). Minimum 1335 N (300 pounds) per anchor installed withdrawal resistance.

E. Neoprene Washers: Neoprene laminated to metal washer, Weath-R-Seal manufactured by

FABCO.

PART 3 - EXECUTION

3.1 REMOVAL OF EXISTING

A. Removed materials need not be salvaged unless specifically required for reuse.

B. Where existing sheet metal is to be reused, extra precautions shall be taken to prevent damage to metal during reinstallation.

3.2 PREPARATION OF EXISTING SURFACES

A. Verify that surfaces to receive sheet metal are smooth, clean, and have no free water present in any form.

B. Verify that nailers to receive sheet metal are properly placed.

C. Verify shapes and dimension of surface to be covered before fabrication of sheet metal.



3.3 FABRICATION

A. General:

1. Sheet metal installation shall as a minimum, be in accordance with recommendations of Factory Mutual Loss Prevention data Sheet 1-49, June 1985.

2. Shop Fabricate all items requiring soldering or welding unless noted otherwise. 3. Re-coat soldered joints of coated sheet metal with material and in manner specified by

Manufacturer. 4. Sheet metal work shall be of material and gauge specified, and shaped to be installed in

strict conformance with details on Drawings. 5. Turn back exposed metal edges into hemmed edge. 6. Use elastomeric sealant as necessary to make a watertight installation including foam

backer rod as necessary to make a good sealant joint. 7. Screw fasteners shall be turned into place rather than driven. 8. Clean, grind, and otherwise prepare surfaces to be welded to provide the best weld possible

in accordance with American Welding Society Code for Welding in Building Construction. Membrane shall be completely protected during welding.

B. Soldering:

1. Remove strippable plastic film of coated sheet metal, and completely remove coating before soldering.

2. Pre-tin edges of sheet metal before soldering begins. 3. Apply flux and begin soldering immediately. 4. Soldering shall be done slowly with well-heated soldering irons until the seams are

thoroughly heated and the solder has been completely sweated through the full width of the seams.

5. Remove acid flux residue with a solution of washing soda in water.

3.4 INSTALLATION REQUIREMENTS

A. General: Provide metal flashing, pan scuppers, pitch pockets, reglets and other accessories to provide a watertight installation. Comply with manufacturer's instructions and the "Architectural Sheet Metal Manual" published by the Sheet Metal and Air Conditioning Contractors National Association, Inc.

1. Anchor units of work securely in place, providing for thermal expansion of metal units. 2. Conceal fasteners where possible. 3. Set units true to line and level as indicated. 4. Install work with laps, joints, and seams that will be permanently watertight and

weathertight.

B. Underlayment: Where stainless steel is to be installed directly on cementitious substrates, install a slip sheet of red rosin paper and a course of polyethylene underlayment.

C. Stainless Steel: Follow guide specifications for "Stainless Steel Roofing, Flashing and Accessories" published by the International Nickel Company in their Architect's Stainless Steel Library, Volume 3.



D. Prefabricated Coping Assembly Installation:

1. Install pan assemblies in strict accordance with the manufacturer's instructions, level and true line. Anchor to concrete with corrosion-resistant fasteners provided.

2. Anchor and Corner Support Clips: Start at corners first. Locate and fasten corner support clips to the wall. Place splice plates onto anchor clips and assembly into each end of corner. Install panning miters first by pressing downward over corner support clips until snap lock occurs, then fastening exposed edge of anchor clips. Locate and fasten anchor clips to the wall utilizing appropriate fasteners for the substrate. Provide two (2) beads of sealant at each side of joints at splice plates.

3. Panning Sections: Install full length panning sections after all miters are installed. Position splice plates onto anchor clips.

4. Completion: Continue installing full-length panning sections leaving 1/8" space at each joint to allow for the thermal movements of the material. Field cut where necessary using a fine tooth saw.

5. Remove protective film immediately after installation. 6. Do not mar shop-applied finish; if marred, touch-up to COTS’s satisfaction, or replace with

new units or remove units and return to shop for refinishing. E. In general, furnish metal flashing lengths joined with flat locked soldered seams. F. Sheet metal shall be designed and detailed for a temperature of 70� degree Fahrenheit at time of

installation with allowance made for a 150� degree Fahrenheit ambient temperature range. Make all necessary adjustments for installations at other than design temperature.

G. Install reglets to receive counterflashing. Where shown in concrete, furnish reglets. H. Install counterflashing in reglets, either by snap-in seal arrangement or by welding in place for

anchorage and filling reglet with mastic or elastomeric sealant, as indicated and depending on degree of sealant exposure.

I. Separate dissimilar metals by coating with dielectric separator, saturated felt or lead.


A. Clean exposed metal surfaces, removing substances that might cause corrosion of metal or deterioration of finishes.

B. Upon completion of work, remove flux residue with a solution of washing soda or ammonia, then drench with clean water.

C. Protection: Advise Contractor of required procedures for surveillance and protection of flashings and sheet metal work during construction to ensure that work will be without damage or deterioration other than natural weathering at time of Substantial Completion.


A. Alignment and elevation of installed sheet metal may be checked by COTR .



B. Withdrawal tests of installed fasteners may be required if attachment is in question.

PART 4 – CONTRACTOR’S QUALITY CONTROL REQUIREMENTS

4.1 GENERAL

A. Division 1 Section "Quality Requirements" specifies requirements for the Contractor's quality control program. The following additional testing and inspection requirements are required in the Contractor's Quality program for the work of this section. Testing and inspecting services are required to verify compliance with requirements specified or indicated. These services do not relieve Contractor of responsibility for compliance with the Contract Document requirements.

B. Contractor Supervision: Provide continuous supervision and quality control during sheet metal installation. Inspect metal systems for conformance with requirements. The Contractor shall notify the COTR at least 72 hours in advance of inspection so that appropriate representatives may attend.

C. Contractor shall use the Quality Control (QC) Reporting Form. Reports shall be submitted within 48 hours to COTR.




SHEET METAL WARRANTY OWNER ______________________________________________________________________________ ADDRESS ______________________________________________________________________________ PROJECT ______________________________________________________________________________ PROJECT ADDRESS ______________________________________________________________________________ DATE OF FINAL ACCEPTANCE ______________________________________________________________________________ SHEET METAL CONTRACTOR ______________________________________________________________________________ ADDRESS ______________________________________________________________________________ PHONE NO. ______________________________________________________________________________ This Warranty stipulates that the above-named Contractor shall, during a period of five (5) years from the date of final acceptance of the Work, maintain the sheet metal flashing systems and repair all defects which result from faulty workmanship or defective materials, without further cost to the Owner.

Excluded from this Warranty may be any and all damage to said buildings or their contents caused by acts or omissions of the Owner; fire, lightning, winds of peak gust speeds of 175 mph or higher, hailstorms, or other unusual phenomenon of the elements; movements or failure of the supporting building structure that causes flashing failure; or vapor condensation beneath the liner. Exclude from this Warranty any damages to the building or the contents.

Before expiration of the above Warranty period, the Contractor shall inspect the sheet metal in the presence of the Owner and make the necessary correction of all deficiencies not considered normal. The Warranty shall remain in force until the necessary repair work has been done.

SHEET METAL CONTRACTOR

Signed __________________________________ Title __________________________________ Date __________________________________