fwps central kitchen section 031100 federal · pdf file... guide for cast-in ... specification...

FWPS CENTRAL KITCHEN FEDERAL WAY PUBLIC SCHOOLS 07792.00

SECTION 031100CONCRETE FORMING

October 18, 2011 BID SET 031100 - 1 of 11

SECTION 031100 CONCRETE FORMING

PART 1 GENERAL

1.1 SUMMARY

A. Section Includes: 1. Formwork for cast-in-place concrete. 2. Form ties, joint treatments, and form release agents. 3. Embedded items, inserts, and openings. 4. Formwork erection, shoring, and stripping. 5. Waterstops and accessories

B. Related Sections: 1. Section 032100 - Reinforcing Steel 2. Section 033000 - Cast-In-Place Concrete 3. Section 033100 - Cast-In-Place Insulated Concrete Sandwich Wall Panels 4. Section 079200 - Joint Sealants 5. Division 22 – Plumbing 6. Division 26 - Electrical

1.2 REFERENCES

A. Reference Standards: Current edition at time of Bid.

B. American Concrete Institute (ACI): 1. ACI 117 - Standard Tolerances for Concrete Construction and

Materials 2. ACI 301 - Standard Specifications for Structural Concrete 3. ACI 303R - Guide for Cast-In-Place Architectural Concrete Practice 4. ACI 318 - Building Code Requirements for Structural Concrete 5. ACI 347R - Guide to Formwork for Concrete

C. APA - The Engineered Wood Association (APA): 1. APA PS1 - Construction and Industrial Plywood (with Typical APA

Trademarks) 2. APA Grades and Specifications Product Guide.

D. American Society for Testing and Materials (ASTM) International: 1. ASTM A153 - Specification for Zinc Coating (Hot-Dip) on Iron and Steel

Hardware 2. ASTM A307 - Specification for Carbon Steel Bolts and Studs, 60,000 PSI

Tensile Strength 3. ASTM F1554 - Standard Specification for Anchor Bolts, Steel, 36, 55, and

105-ksi Yield Strength

1.3 DESIGN REQUIREMENTS

A. Formwork Design, Structural Stability, and Sufficiency: Conform to IBC Section 1906, ACI 318 Chapter 6, and ACI 347R.




1. Design, engineer, and construct formwork, shoring, reshoring, and bracing to withstand construction loads, continuous loads, and lateral pressure.

2. Design formwork to withstand pressure resulting from placement and vibration, while maintaining specified tolerances.

3. Design for special vertical and horizontal loads conforming to ACI 347R Section 2.2.

B. Exposed to View Concrete: Conform to ACI 301 Chapter 6 and ACI 347R for Architectural Concrete, except non-public utility areas.

1.4 SUBMITTALS

A. Submit under provisions of Section 013300.

B. Shop Drawings: Dimensioned formwork and shoring drawings. 1. Show openings, form joints, control joints, expansion joints, reveal joints, form tie

locations, bracing, temporary supports, and concrete embedments. 2. Show sizes, types, and locations of waterstops, piping, conduit, sleeves, connectors,

and other accessories.

C. Product Data: Manufacturers, product descriptions, and manufacturer instructions for form release agent, formwork type, and other products specified for use with formwork.

1.5 QUALITY ASSURANCE

A. Design formwork under direct supervision of professional engineer experienced in formwork design and licensed in State of Washington.

B. New plywood forms for Architectural Concrete and Cast-In-Place Insulated Concrete Sandwich Panels.

1.6 REGULATORY REQUIREMENTS

A. Regulatory Requirements: Conform to provisions of Section 014100.

B. Special Inspections: Conform to requirements of Section 014523 and IBC Chapter 17.

1.7 MOCK-UPS

A. Provide under provisions of Section 014300.

B. Illustrate Architectural Concrete joint treatment for approval before beginning work of this Section. Include internal and external corners.

C. Provide panel illustrating exterior Architectural Concrete finish per mockup sketch attached to Section 014300.

D. Protect accepted mock-ups as standard of workmanship.

E. Do not incorporate mock-ups into permanent Work.




1.8 DELIVERY, STORAGE, AND HANDLING

A. Conform to provisions of Section 016600 and manufacturer’s instructions for manufactured formwork and accessories.

B. Store forms off ground, ventilated and protected, to prevent deterioration.

1.9 PROJECT CONDITIONS

A. Foundation Concrete in Neat Excavations: As accepted in advance by Architect where following conditions are met. 1. Excavations of foundation trench walls are determined as stable by Geotechnical

Engineer. 2. Excavations are clean, neatly excavated, and accurately located. 3. Foundation is over-excavated and additional concrete placed beyond detailed design

profiles and dimensions.

1.10 COORDINATION

A. Conform to Section 013113 for coordination with work of other Sections.

B. Coordinate with Section 032100, 033000, and 033100 for placement of rebar and concrete.

C. Other Sections, including Divisions 22 and 26, to coordinate work for embedded items and penetrations, including embedded pipe and conduit.

PART 2 PRODUCTS

2.1 MANUFACTURERS

A. Meadow Burke 1. Cell (800) 804-6565 (Greg Greif, Sales Rep) 2. Website http://www.meadowburke.com

B. Dayton Superior 1. Cell (425) 301-1975, Voice Mail (800) 745-3705, Email

[email protected] (Mike Costello, Regional Sales Mgr). 2. Website http://www.daytonsuperior.com

C. W.R. Meadows Company 1. Tel (800) 439-6569, Fax (206) 281-1251 (Norcoe, Inc., Jim Sullivan), 2. Website http://www.wrmeadows.com

D. Cresset Chemical Co. 1. Distributed by:

a. Atlas Construction Tel (206) 283-2000 b. Allied Building Product Tel (800) 638-6024

2. Website http://www.cresset.com

E. US Spec Engineered Professional Product, US Mix




1. Cell (503) 267-1970, Tel (800) 397-9903, Fax (503) 764-9777, Email [email protected] (Megan Lord).

2. Website http://www.usspec.com

F. DuraJoint Concrete Accessories. 1. Tel (206) 953-8925, Fax (425) 774-7147, Email [email protected] (Bob Holloway,

CSI) 2. Website http://www.hollowayenterprises.8m.com 3. Tel (888) 833-8308 (Home Office).

G. Substitution Requests: Submit under provisions of Section 012500.

2.2 WOOD FORMS

A. Lumber and plywood products: Originating from sustainably managed forests as certificated by organizations accredited by the Forest Stewardship Council (FSC).

B. Exterior and Interior Concealed Work: APA, PS-1 B-B Plyform Structural I, Exterior, 4 by 8 foot panels, minimum 5/8 inch thick.

C. Plywood Formed Concrete (Exterior and interior Exposed Work): APA, CDX Plywood, Structural I & II, Exterior, 4 foot by 8 foot panels, minimum 3/4 inch thick and as sufficient to support concrete at rate poured. 1. “D” side toward final finish surface of concrete. The intent is to have the wood

pattern expressed on the surface of the concrete.

2.3 METAL AND FIBERGLASS FORMS

A. Accepted in lieu of wood forms except at Plywood Formed Concrete.

B. Matched, tight fitting, stiffened to support weight of concrete without deflection detrimental to tolerances and appearance of finished concrete, as accepted by Architect.

C. Metal Forms: Preformed steel, minimum 16 gauge.

2.4 INSULATED METAL WALL PANEL FORMS

A. At locations where concrete curbs are formed against Insulated Metal Wall Panels or Cold Storage Room walls, secure slip sheet such as Tyvek, Type X building wrap with masking tape to prevent concrete from adhering to panels.

2.5 EARTH FORMS

A. Accepted as noted under Project Conditions in this Section, where approved in advance by Architect.

2.6 FORM TIES

A. Fiberglass: Glass-fiber-reinforced plastic form ties designed to resist lateral pressure of fresh concrete on forms and to prevent spalling of concrete on removal. Color: Gray.




2.7 EMBEDDED ITEMS AND INSERTS

A. Anchor Bolts: ASTM F1554, unless otherwise noted on Structural Drawings. At exterior locations hot-dip galvanized to ASTM A153, Class C. Refer to Structural Drawings for anchor bolt diameters, spacing, embedment, and other requirements.

B. Embedded electrical conduit: In accordance with Division 26 - Electrical.

C. Embedded Plumbing: In accordance with Division 22 - Plumbing.

D. Inserts, Frames, and Sleeves: Size and shapes as required to suit conditions. Heavy gauge ferrous metal, hot dipped galvanized to ASTM A153, Class B. Refer to Structural Drawings for anchor bolt diameters, spacing, embedment, and other requirements.

E. Expansion Joint Caps: 1. Removable, form extruded, high impact polystyrene expansion joint cap 2. Minimum 1/2 inch deep by minimum 1/2 inch wide and as applicable at wider joints. 3. Design to prevent joint filler from bonding to joint sealant. 4. Products:

a. WR Meadows, Sealtight Snap-Cap

F. Expansion Joint Filler: 1. Standard pre-molded bituminous impregnated fiber. 2. Approximately 1/2 inch thick. 3. Products

a. Sonneborn, Sonoflex-F b. WR Meadows, Sealtight Fiber Expansion Joint

G. Construction Joints: Keyed cold joint form. Include accessories for installation in accordance with manufacturer's requirements.

H. Exterior Control Joints: Zip Strip plastic joint former, specified for type and quality. Size as required for 1/4 embedment of slab thickness.

I. Interior Construction Joint at Concrete Curbs and Metal Insulated Wall Panels: Zip Strip plastic joint former, specified for type and quality. Size as indicated on Drawings.

J. Bentonite Waterstops: Hydrophilic waterstops specified for type and quality. Flexible strip of bentonite and modified bitumen waterproofing compound in coil form for joints in concrete construction. 1. Products:

a. DuraJoint Expand-Tite b. Cetco Volclay WatersStop-RX c. Tremco SuperStop

K. Chamfer Strips: Pre-molded plastic chamfer Strips. 1. 3/4 inch by 3/4 inch leg dimensions. 2. 1-1/16 inch dimension across diagonal face.

L. Vinyl Foam Tape for Butt Joints at Architectural Concrete: Closed cell PVC foam with pressure sensitive adhesive on one side.




M. Silicone Sealant and Backer Rod: For sealing joints at Architectural Concrete, and as specified Section 079200.

2.8 FORM RELEASE AGENT

A. Commercial vegetable oil release formulation that will not stain, bond to, or adversely affect concrete surfaces or coating. 100 percent biodegradable.

B. Manufacturers: 1. Cresset Chemicals Co, Crete-Lease 880-VOC, thin mineral spirit and vegetable oil

release agent. 2. US MIX, US SPEC AquaBlue Springkote, vegetable oil release agent or Ezkote Green.

PART 3 EXECUTION

3.1 EXAMINATION

A. Verify conditions ready to receive work of this Section.

B. Field survey to verify that formwork locations, measurements, and levels are accurate and true to line.

3.2 PREPARATION

A. Stagger panel joints. Show panel joints on shop drawings and verify with Architect before beginning. 1. Arrange horizontal and vertical panel joints symmetrically. 2. Keep number of joints to practical minimum.

B. Provide means to adjust forms and struts to compensate for settlement during placement.

C. Arrange and assemble formwork to permit dismantling and stripping to not damage concrete upon removal.

D. Arrange forms to allow stripping while maintaining principal shores in place.

E. Arrange shoring and bracing to transmit loads through falsework to adequate support.

F. Before erection, plug and seal cracks, holes, gaps, openings, and other telegraphing imperfections in contact surfaces.

3.3 INSTALLATION OF FORMWORK

A. Conform to IBC Section 1906, ACI 303R, ACI 318 Chapter 6 and ACI 347R.

B. Construct formwork to maintain specified tolerances.

C. Accurately construct formwork and brace to be unyielding

D. Shore or strengthen formwork subject to over-stressing by concrete loads.

E. Shore at slab on metal deck where deck spans more than 8’-0”.




F. Do not reshore without Architect’s and Structural Engineer's approval.

G. Camber formwork for anticipated deflection due to weight, pressure of fresh concrete, and for structural cambers as shown on Drawings.

H. Construct formwork to prevent loss of cement from concrete. Make watertight at Architectural Concrete surfaces.

I. Construct formwork to hold firmly against hardened concrete and other construction to prevent loss of cement and to maintain surface tolerances. At construction joints, overlap forms minimum 1 inch over previously place concrete.

J. Erect shoring and reshoring for removal of forms without disturbing adjacent shoring and formwork.

K. Set form boards and plywood horizontally for smooth surface concrete.

L. Shim forms as required to assure flush form joints on finished surfaces.

M. Keep forms moist prior to pour to prevent shrinkage and warping.

N. Compensate for anticipated deflections. Provide positive means for adjustment during placement.

O. Studs and Joists: 12 inch on center maximum spacing.

P. Horizontal Form Walers: 24 inch on center maximum spacing.

Q. Wall Form Ties: Install ties symmetrically in tiers and rows with each tier plumb from top to bottom and each row level. Except as otherwise shown on Drawings or instructed by Architect, space form tie for continuous 2 foot by 2 foot pattern each way over walls: 1. 12 inch from edges of form panel. 2. 2 foot on center each way horizontally and vertically within form panel.

R. Use specified plywood forms and specified joint treatment at exposed concrete for textured finish, Architectural Concrete surfaces in accordance with ACI 301, Chapter 13.

S. Provide fillets at external corners of exposed concrete, except at flush joints.

T. Reuse of plywood form boards: Accepted with provision that finish concrete surfaces are same as that obtained by new forms. 1. Remove damaged edges. 2. Repair face imperfections. 3. Fill and patch holes. 4. Clean forms of contaminants. 5. Coat edges of forms with form release agent. 6. Coat forms with form release agent.

U. Install optional metal or fiberglass forms using manufacturer’s accessories as instructed for smooth even finished concrete surface, free of fins and burrs.




3.4 RETIGHTENING FORMS

A. At Exposed Architectural Concrete Construction Joints: Install row of adjustable spreaders approximately 2 inch above joints. Retighten just before making succeeding pour.

3.5 APPLICATION OF FORM RELEASE AGENT

A. Apply form release agent in conformance to manufacturer's instructions.

B. Coat form contact surfaces with form release agent before placing reinforcement, embeds, and anchors.

C. Apply thin coatings of form release agent in at exposed concrete surfaces. Do not over-apply.

D. Do not allow excess form coating material to accumulate in forms or to come into contact with reinforcement and other embedded items

E. Prevent dust, dirt, and other substances that may stain concrete from contaminating forms after coating is applied. Clean and recoat as necessary to maintain clean formwork.

F. Do not coat formwork with form release agent at surfaces receiving finish coatings that may be adversely affected by form release agent. 1. Soak contact surfaces of untreated form panels with clean water. 2. Maintain wet surfaces during concrete placement.

3.6 JOINTS AND STOPPAGES

A. Align joints, and tighten to make watertight. Keep form joints to a minimum.

B. Joints at Architectural Concrete: 1. Apply 1/8 inch thick foam tape, recessed 1/8 inch below exposed surface. 2. Butt joints for smooth snug joint. 3. Seal recessed joint with clear silicone sealant. 4. Wipe off excess making clean smooth surface.

C. Construction Joints: Cast key into joints for positive lock. Do not proceed with work prior to acceptance of shop drawings.

D. Exterior Control Joints: Refer to Section 033000.

E. Interior Control Joints at Exposed Concrete Slabs: Refer to Section 033000.

F. Expansion Joints: Build into forms. Locate where required and where indicated.

3.7 INSERTS, EMBEDDED ITEMS, AND OPENINGS

A. Inserts, Sleeves, Conduit and other Embedded Items: Conform to of IBC Section 1906, ACI 318 Chapter 6, and ACI 347.

B. Coordinate with work of other Sections in forming and placing slots, reglets, recesses, sleeves, bolts, anchors, and other components and inserts.




C. Provide openings required for other trades, including Mechanical and Electrical.

D. Obtain approval before framing openings not shown on Structural Drawings.

E. Install accessories in accordance with manufacture's instructions, straight, level, true, and plumb. Ensure that items are not disturbed during concrete placement.

F. Anchor Bolts: Set as indicated or as required in accordance with Section 033000 and Structural Drawings.

G. Waterstops: 1. Embed continuously without displacing reinforcement at joints, including expansion

joints and cold joints subject to weather exposure or hydrostatic pressure at walls, slabs, and footings. Include expansion and cold joints at elevator pits, tunnels and below grade walls enclosing interior spaces.

2. Heat-seal waterstop sections for continuous seal in accordance with manufacturer's instructions.

3. Hot ring and wire tie reinforcement at 12 inch on center. 4. Place PVC waterstops at cold joint applications and moving joint applications 5. Place Bentonite waterstops at conditions where there will be a hydrostatic head or the

waterstop will be constantly wet.

H. Clean-Outs: Provide temporary openings in forms to facilitate cleaning and inspections before concrete placement. 1. Locate at bottom of forms to allow flushing water to drain. 2. Construct so that cleanout locations will not be apparent at Architectural Concrete

surfaces.

3.8 FORM CLEANING

A. Clean forms as erection proceeds to remove foreign matter within forms.

B. Clean forms of debris before placing concrete.

C. Flush with water or use compressed air to remove remaining foreign matter. Ensure that water and debris drain to exterior through clean-outs.

D. During freezing weather conditions, remove ice and snow from within forms with compressed air or other mechanical means. Do not use de-icing salts or water.

3.9 FORMWORK TOLERANCES

A. Conform to ACI 117 to achieve tolerances specified by Section 033000.

B. Formwork Surface Irregularities: Conform to ACI 117 Class of Surface for abrupt offsets between adjacent pieces of formwork and gradual surface warping and deviation from surface plane. Do not exceed following: 1. Architectural Exposed Surfaces: Class A, 1/8 inch. 2. Exposed Surfaces not designated as Architectural Exposed: Class C, 1/2 inch. 3. Concealed Surfaces: Class D, 1 inch.




3.10 INACCESSIBLE FORMS AND INSULATED METAL WALL PANEL FORMS

A. Remove forms except where specifically indicated to remain. Provide adequate access for removal.

B. Where concrete curbs are formed against Insulated Metal Wall Panels, cut and remove exposed portions of Tyvek slip sheet below line of exposed sealant joint. Proceed with installation of finished joint as noted above.

3.11 SHORES AND SUPPORTS

A. Conform to ACI 347R for shoring and reshoring in multistory construction.

B. Shore floor directly under floor or roof so that loads from construction above transfer directly to shoring below. 1. Space shoring in stories below floor and roof levels so that floors and members will

not be excessively loaded and will not induce tensile stress in concrete members where no reinforcing steel is provided.

2. Extend shores beyond minimum required to distribute loads throughout structure.

C. Remove shores and reshores in planned sequence to avoid damaging partially cured concrete.

D. Locate and provide reshoring to support work and to prevent excessive stress and deflection.

E. Keep reshores in place minimum 15 days after placing upper tier and as required for concrete to attain 28 day strength.

3.12 REMOVING FORMWORK

A. Conform to IBC Section 1906 and ACI 318 Chapter 6, and ACI 347R.

B. Do not remove forms and shoring until concrete has cured sufficiently to support its own weight and superimposed loads. Determine compressive strength of in-place concrete by testing representative field-cured specimens.

C. Ties: Remove 24 hours after concrete placement. Dry pack form tie holes in accordance with ACI 301.

D. Form Stripping: Unless otherwise instructed by Architect and Structural Engineer, remove forms according to following: 1. Footings: 24 hours. 2. Walls and Columns: Minimum 3 days for concealed concrete and minimum 7 days for

exposed Architectural Concrete. 3. Bottom of Beams and Slabs: 14 days.

E. Supporting Forms and Shoring: Leave in place minimum 7 days and until supported concrete has reached 75 percent of 56 day strength. 1. Remove formwork from Architectural Concrete in same sequence as concrete

placement to achieve similar concrete surface coloration. 2. Remove in manner and sequence to prevent damage to concrete surfaces.




F. Wood Forms for Wall Openings: Loosen as soon as possible without damaging concrete surface.

G. Reshoring: 1. Erect additional shoring and reshoring as needed to allow forms to be removed

without disturbing adjacent formwork and shoring. 2. Support structural members to conform to design requirements and to permit

successive construction.

3.13 REUSING FORMWORK PANELS

A. Clean and repair formwork panel surfaces.

B. Apply new form release agent as specified for new formwork.

C. Do not reuse form panels that are split, frayed, delaminated, or exhibiting other damage for exposed concrete.

3.14 FINISHING AND REPAIRS OF FORMED SURFACES

A. Finish and repair formed concrete surfaces in accordance with Section 033000.

END OF SECTION


SECTION 032100REINFORCING STEEL


SECTION 032100 REINFORCING STEEL

PART 1 GENERAL

1.1 SUMMARY

A. Section Includes: Reinforcing steel and accessories for concrete reinforcement.

B. Related Sections: 1. Section 031100 - Concrete Forming 2. Section 033000 - Cast-In-Place Concrete 3. Section 033100 - Cast-In-Place Insulated Concrete Sandwich Wall Panels 4. Section 072616 - Below-Grade Vapor Retarders

1.2 REFERENCES

A. Reference Standards: Current edition at date of Bid.

B. American Concrete Institute (ACI): 1. ACI 117 - Standard Specifications for Tolerances for Concrete

Construction and Materials. 2. ACI 301 - Standard Specifications for Structural Concrete Buildings. 3. ACI 315 - Details And Detailing Of Concrete Reinforcement (Refer to

ACI Detailing Manual, ACI SP-66). 4. ACI 318 - Building Code Requirements for Reinforced Concrete.

C. American Society for Testing and Materials (ASTM) International: 1. ASTM A108 - Standard Specification for Steel Bars, Carbon, Cold-Finished,

Standard Quality. 2. ASTM A185 - Standard Specification for Steel Welded Wire Reinforcement,

Plain, for Concrete. 3. ASTM A496 - Standard Specification for Steel Wire, Deformed, for Concrete

Reinforcement. 4. ASTM A497 - Standard Specification for Steel Welded Wire Fabric,

Deformed, for Concrete Reinforcement. 5. ASTM A615 - Standard Specification for Deformed and Plain Billet-Steel

Bars for Concrete Reinforcement. 6. ASTM A706 - Standard Specification for Low-Alloy Steel Deformed Bars

and Plain Bars for Concrete Reinforcement. 7. ASTM A722 - Standard Specification for Uncoated High-Strength Steel Bars

for Prestressing Concrete.

D. American Welding Society (AWS): 1. AWS D 1.4 - Structural Welding Code - Reinforcing Steel.

E. Concrete Reinforcing Steel Institute (CRSI): Manual of Standard Practice.

1.3 SUBMITTALS





B. Shop Placement Drawings: Prepare in conformance to IBC Chapter 19, ACI 318 Chapter 7, and ACI 315. 1. Prepare in sufficient detail to resolve reinforcement intersections. 2. Show sizes, spacing, locations, quantities, bending and cutting schedules, bending and

placing diagrams, stirrup spacing, and supporting and spacing devices. 3. Prepare placement details for specific reinforcing intersections and clearances

conditions not shown on Structural Drawings.

C. Manufacturer's Certificate: Mill test report of physical and chemical analysis for ASTM A615 and ASTM A706 reinforcing steel. Certify that products meet or exceed structural and specification requirements.

D. Test Reports: ICC Evaluation Services Report for mechanical splices (couplers) showing compliance to specified requirements.


A. Supply reinforcing steel in predetermined sizes and bends to eliminate field alterations. Do not make alterations to shop formed steel without prior acceptance for each instance by Architect and Structural Engineer.


A. Conform to requirements of Section 014100 for referenced Codes, ordinances, and other regulatory requirements.

B. Special Inspections: Conform to requirements of IBC Chapter 17 – Structural Tests and Special Inspections and Section 014523.

C. Reinforcing Steel: Conform to provisions of IBC Chapter 19, ACI 318, ACI 301, and CRSI Manual of Standard Practice.


A. Deliver, store and handle under provisions of Section 016600.

B. Deliver reinforcement to site bundled, tagged, and marked. Use metal tags indicating bar size, lengths, and other information corresponding to markings shown on placement diagrams.

C. Store and protect concrete reinforcement materials at site from damage, dirt and rust.

1.7 COORDINATION


B. Coordinate with Section 031100, 033000, and 033100 for formwork and placement of concrete.




PART 2 PRODUCTS

2.1 MANUFACTURER

A. Substitution Requests to Specified Products: Conform to provisions of Section 012500.

2.2 REINFORCEMENT STEEL

A. Type, Size and Location: As indicated on the Structural Drawings.

B. Reinforcing Steel: Deformed bar, free from rust, dirt, and loose scale, uncoated. Factory mark with size and grade.

C. Billet-Steel Reinforcing Bar: ASTM A615, Grade 60 (60 ksi yield strength).

2.3 MISCELLANEOUS REINFORCEMENT

A. Welded Steel Wire Fabric: Conform to IBC Chapter 3, including ASTM A185 Plain Type or ASTM A497 Deformed Type, uncoated or galvanized, free from rust, dirt, and loose scale.

B. Fiber Reinforcement: As specified Section 033000 and 033100.

2.4 ACCESSORIES

A. Deformed Bar Anchors (DBA): Welded deformed bar stud anchors for concrete connections. Manufacture for automatic stud welding, as instructed by manufacturer. Provide appropriate ferrule for each stud. 1. Steel Bars: ASTM A108. 2. Cold-rolled Deformed Steel Wire: ASTM A496. 3. Manually Welded Normal Reinforcing Bars: Not accepted in place of DBA.

B. Mechanical Splices: 1. Listed by ICC Evaluation Services Evaluation Report or Legacy Report. 2. Conform to ACI 318 Section 12.14.3 and ACI 318 Section 21.2.6, as modified by IBC

Chapter 19, and as indicated on Structural Drawings. 3. Type 1 Splice: Develop minimum 125 percent of specified yield strength (fy) of the

rebar as required for tension or compression.

C. Tie Wire: No. 16 gage or heavier double annealed iron wire.

D. Chairs, Bolsters, Bar Supports, Spacers: 1. Detail in conformance to ACI 315 and CRSI Bar Support Classifications. 2. Design sizes and shapes as required to maintain strength and support of

reinforcement during placement of concrete. 3. Include load bearing pads to prevent vapor retarder puncture.

E. Special Chairs, Bolsters, Bar Supports, and Spacers Adjacent to Weather-Exposed Concrete Surfaces: Stainless steel type; size, and shape as required for Project conditions. Do not allow to be exposed at wall surfaces.




2.5 FABRICATION

A. Fabricate concrete reinforcement in accordance with CRSI Manual of Practice and ACI 318. 1. Bend and straighten reinforcing steel in accordance to ACI 318 Chapter 7. 2. Do not bend or straighten reinforcing steel that is partially embedded in concrete. 3. No heating of reinforcing steel is permitted.

B. Reinforcing Bars Bend Dimensions and Fabrication Tolerances: Conform to IBC Chapter 19 and ACI 318.

C. Welding: 1. Do not weld or tack weld reinforcing bars. 2. Where indicated or accepted, conform to AWS D1.4 using AWS/WABO Certified Welders,

E9018 electrodes. Conform to additional provisions of Section 050523.

D. Splicing: Provide tension lap splices, except mechanical splices as indicated on Structural Drawings.

PART 3 EXECUTION

3.1 PREPARATION

A. Clean reinforcing steel of loose rust, mud, dirt, debris, oil, and other foreign substances that may affect bond.

3.2 INSTALLATION

A. Placement of Reinforcing Steel and Tolerances: Conform to IBC Chapter 19, ACI 318, and ACI 117.

B. Details of Placement and Support of Reinforcing Steel: Conform to ACI 315 and CRSI recommendations, as shown on accepted placement drawing submittals.

C. Displacement of Reinforcing: Where displaced, shifted, or moved to locations exceeding allowable tolerances, prior to placing concrete: 1. Provide 48 hours notice to Architect and Structural Engineer. 2. Obtain acceptance for resulting arrangement.

D. Joints: Place reinforcement through expansion joints and as specified or shown on Drawings through construction and contraction joints.

E. Allowable Cover Over Reinforcement: Conform to IBC Chapter 19 and as shown on Structural Drawings.

F. Tie Wires: Bend or turn as necessary to prevent exposure of wires through concrete placement.

G. Welded Wire Fabric: 1. Place continuously where shown in slabs between control and expansion joints. 2. Do not carry through expansion joints. 3. Do not cut at control joints. 4. Extend across beams and walls.




5. Lap fabric minimum 6 inches on sides and ends.

H. Dowels: 1. Install at right angle to joint being doweled. 2. Accurately align dowels parallel to finished concrete surface. 3. Rigidly support during concrete placement using dowel baskets. 4. Coat one end of dowel with bond breaker.

I. Lapped Bars: Place in contact and tie securely, or space transversely apart to embed entire surface of bar into concrete. Do not space lapped bars more than 1/5th required length of lap and no more than 6 inch apart.

J. Splices: Conform to ACI 318 as modified by IBC Chapter 19 and Structural Drawings. 1. Lap Splices: Do not lap splice reinforcing bars larger than No. 11. 2. Mechanical Splices: Conform to manufacturer instructions and ICC Evaluation Services

Report.

K. Vapor Barrier: Do not puncture or displace. Do not use grade stakes or other accessories that may puncture vapor barrier. Refer to Section 072616.

L. Formed Openings: Place reinforcing to accommodate openings and penetrations.

M. Soil at Footings: Maintain firm and compacted during placement of reinforcing steel.

N. Do not drive nails in forms for supporting steel.

O. Stubs and Other Projecting Bars: Place and secure before pouring.

P. Field Bending Reinforcing Steel: Not permitted.

Q. Torch Cutting: Do not use gas cutting torches in field for correcting fabrication errors in reinforcing steel.

R. Reinforcing Conflict with Other Construction: Notify Architect prior to placing concrete. Includes in conflict with conduit, piping, inserts, and sleeves

S. Field Welding of Reinforcement: Not permitted except as approved by Structural Engineer. No welding at bend in bar or at cross bars.

3.3 FIELD QUALITY CONTROL

A. Conform to independent inspections specified Section 014523.

B. Inspect for acceptability before beginning concrete work of other sections.

3.4 ADJUSTING

A. Defective Reinforcing: Remove and replace: 1. Bars with kinks or bends not shown on Drawings. 2. Bars damaged due to bending or straightening. 3. Bars heated for bending. 4. Reinforcing steel not placed in accordance with provisions of Contract Documents.




END OF SECTION


SECTION 033000CAST-IN-PLACE CONCRETE


SECTION 033000 CAST-IN-PLACE CONCRETE

PART 1 GENERAL

1.1 SUMMARY

A. Section Includes: 1. Cast-in-place concrete for building slabs, footings, foundations, walls, stairs, and

structural components. 2. Admixtures, agents and compounds. 3. Fiber reinforcement. 4. Concrete Hardeners and Densifiers 5. Architecturally exposed concrete (AEC) 6. Finish procedures to comply with floor finishes specified in Section 033550, Polished

Concrete Floor Finish, as part of Alternate No. 4 – Polished Concrete at Office Areas, and Section 096724, Resinous Epoxy Mortar Flooring, as part of Alternate No. 5 – Epoxy Flooring in Kitchen Areas.

B. Related Sections: 1. Section 012300 - Alternates 2. Section 031100 - Concrete Forming 3. Section 032100 - Reinforcing Steel 4. Section 033100 - Cast-In-Place Insulated Concrete Sandwich Wall Panels 5. Section 033550 - Polished Concrete Floor Finish 6. Section 072616 - Below-Grade Vapor Retarder 7. Section 096724 - Resinous Epoxy Mortar Flooring

1.2 DEFINITIONS

A. Cast-in-Place Concrete: Formed concrete that is concealed or locations where appearance is not critical.

B. Architectural Exposed Concrete: Formed concrete that is exposed to view on surfaces of completed structure or building, except for non-public utility areas, and that requires special concrete materials, formwork, placement, or finishes to obtain specified architectural appearance.

C. Cementitious Materials: Portland cement alone or in combination with one or more of the following: blended hydraulic cement, fly ash and other pozzolans, ground granulated blast-furnace slag, and silica fume; subject to compliance with requirements.

1.3 REFERENCES

A. Reference Standards: Most current edition at date of Bid.

B. American Association of State Highway and Transportation Officials (AASHTO) 1. AASHTO T26 - Method of Test for Quality of Water to be Used in Concrete. 2. AASHTO M182 - Burlap Absorptive Cover.

C. American Concrete Institute (ACI):




1. ACI 117 - Standard Tolerances for Concrete Construction and Materials.

2. ACI 301 - Standard Specifications for Structural Concrete 3. ACI 302.1R - Guide for Concrete Floor and Slab Construction 4. ACI 303R - Guide for Cast-In-Place Architectural Concrete Practice 5. ACI 304R - Guide for Measuring, Mixing, Transporting, and Placing

Concrete 6. ACI 304.2R - Placing Concrete by Pumping Methods 7. ACI 305R - Hot Weather Concreting 8. ACI 306R - Cold Weather Concreting 9. ACI 306.1 - Standard Specification for Cold Weather Concreting 10. ACI 308 - Standard Practice for Curing Concrete 11. ACI 309R - Guide for Consolidation of Concrete 12. ACI 318 - Building Code Requirements for Reinforced Concrete 13. ACI 347 - Guide for Concrete Formwork

D. American Society for Testing and Materials (ASTM) International: 1. ASTM C31 - Practice for Making and Curing Concrete Test Specimens in

the Field 2. ASTM C33 - Specification for Concrete Aggregates 3. ASTM C39 - Test Method for Compressive Strength of Cylindrical

Concrete Specimens 4. ASTM C94 - Specification for Ready-Mixed Concrete 5. ASTM C143 - Test Method for Slump of Portland Cement Concrete 6. ASTM C150 - Specification for Portland Cement 7. ASTM C157 - Standard Test Method for Length of Change of Hardened

Hydraulic-Cement Mortar and Concrete. 8. ASTM C171 - Standard Specifications for Sheet Materials for Curing

Concrete 9. ASTM C172 - Standard Practice for Sampling Fresh Concrete 10. ASTM C231 - Standard Test Method for Air Content of Freshly Mixed

Concrete by the Pressure Method 11. ASTM C260 - Specification for Air-Entraining Admixtures for Concrete 12. ASTM C309 - Standard Specification for Liquid Membrane-Forming

Compounds for Curing Concrete 13. ASTM C494 - Specification for Chemical Admixtures for Concrete 14. ASTM C618 - Specifications for Coal Fly Ash and Raw or Calcinated

Natural Pozzolan for Use as a Mineral Admixture in Portland Cement Concrete

15. ASTM C642 - Standard Test Method for Density, Absorption, and Voids in Hardened Concrete

16. ASTM C882 - Test Method for Bond Strength of Epoxy Resin Systems Used with Concrete

17. ASTM C939 - Standard Test Method for Flow of Grout for Prepared-Aggregate Concrete (Flow Cone Method)

18. ASTM C1042 - Standard Test Method for Bond Strength of Latex Systems Used With Concrete By Slant Shear

19. ASTM C1059 - Standard Specification for Latex Agents for Bonding Fresh To Hardened Concrete

20. ASTM C1107 - Standard Specifications for Packaged Dry, Hydraulic-Cement Grout (Nonshrink)




21. ASTM C1116 - Standard Specifications for Fiber-Reinforced Concrete and Shotcrete

22. ASTM C1315 - Standard Specification for Liquid Membrane-Forming Compounds Having Special Properties for Curing and Sealing Concrete

23. ASTM C1602 - Standard Specification for Mixing Water Used in the Production of Hydraulic Cement Concrete

24. ASTM C1603 - Standard Test Method for Measurement of Solids in Water 25. ASTM D1751 - Standard Specification for Preformed Expansion Joint Filler

for Concrete Paving and Structural Construction (Nonextruding and Resilient Bituminous Types)

26. ASTM D2240 - Standard Test Method for Rubber Property—Durometer Hardness

27. ASTM D4258 - Standard Practice for Surface Cleaning Concrete for Coating. 28. ASTM E1155 - Standard Test Method for Determining FF Floor Flatness and

FL Floor Levelness Numbers 29. ASTM F710 - Standard Practice for Preparing Concrete Floors to Receive

Resilient Flooring 30. ASTM F1869 - Standard Test Method for Measuring Moisture Vapor

Emission Rate of Concrete Subfloor Using Anhydrous Calcium Chloride

31. ASTM F2170 - Standard Test Method for Determining Relative Humidity in Concrete Floor Slabs Using in situ Probes

1.4 DEFINITIONS

A. Slump: The measurement of the vertical difference in height of the resulting concrete pile and the original 12 inch tall cone after the slump cone is filled then lifted.

B. Slump Flow: The measurement of the resulting horizontal diameter of the concrete pile after the slump cone is filled then lifted. This method measures the unconfined flow of the mixture.

1.5 CONCRETE MIX DESIGN REQUIREMENTS

A. Performance Mix Design: 1. Prepare mix design for each type and strength of concrete by either laboratory trial

batch, verified by independent testing laboratory, or field experience methods as prescribed by ACI 301.

2. Prepare mix design information for concrete batch weights with bulk-specific gravity determinations for aggregates based on saturated surface dry (SSD) condition. Include mix information sufficient to verify through absolute volume calculations: a. Concrete Yield. b. Cement Factor. c. Water/Cement Ratio. d. Mortar to Voids Ratio.

3. When adjustment to mix design becomes necessary due to job conditions, weather, test results, changes in material properties, or other circumstances, resubmit new mix design for acceptance by Architect and Structural Engineer.

B. Proportioning and Mixing: Conform to requirements of IBC, including Chapter 19.




C. Design Strength: 1. Footings and Interior Concrete Slabs on Grade: As specified per Structural Drawings,

except not less than minimum 3,000 psi 28 day strength. 2. Interior Concrete Slabs on Deck: As specified per Structural Drawings, except not less

than minimum 3,500 psi 28 day strength. 3. Building Structural Concrete Other Than Slabs: As specified by Structural Drawings,

except not less than 4,000 psi 28 day strength. 4. Exterior Site Work Concrete: As specified by Civil Site Paving and Grading Notes and

Specifications.

D. Water/Cement Ratio for Interior Slabs: 0.40 to 0.44, based on total cementitious material, including fly ash and other pozzolanic materials. 1. Water Content for Slabs: Maximum 270 pounds per cubic yard. 2. Total Combined Cement and Fly Ash Content for Slabs: Minimum 516 pounds per

cubic yard. 3. Slabs Requiring Lower W/C Ratio: Treat with surface evaporation retarder immediately

following concrete setup. 4. Building Structural Concrete Other than Slabs: As indicated on Structural Drawings. 5. Exterior Site Work Concrete: As specified by Civil Site Paving and Grading Drawings.

E. Length Change: As tested to ASTM C157. Where no test data is available, add shrinkage reducing admixture, conforming to manufacturer’s instructions. 1. Slabs: Maximum 0.035 percent shrinkage in 28 days. 2. Walls, Columns, and Beams: Maximum 0.04 percent shrinkage in 28 days. 3. Footings: No requirements.

F. Fly Ash: 1. Add to batch plant concrete mix as Portland cement replacement. Submit back-up

data for mix design. 2. Fly ash content as a percentage of total weight of cementitious material:

a. Concrete Slabs and Pavements: Minimum 20 percent, maximum 20 percent. b. Other than Slabs: Minimum 0 percent, maximum 20 percent.

G. Superplasticisers: Add high range, mid-range, and low range water-reducing admixtures to batch plant mix as means to develop sufficient slump and workability, as instructed by manufacturer.

H. Air-Entraining Agent at Exterior Concrete: Conform with ASTM C260 1. Achieve 5 percent entrained air, plus or minus 1-1/2 percent to batch plant concrete

mix, for exterior concrete exposed to earth, weather, or freezing temperatures after curing.

2. Do not add to interior slabs, except as accepted by Architect and Structural Engineer.

I. Fiber Reinforcement at concrete slabs, as otherwise indicated by Structural Drawings: 1. Add approximately 0.1 percent by volume to concrete mix (approximately 1-1/2

pounds of fiber reinforcement per cubic yard of concrete) and as instructed by manufacturer.

2. Add at batch plant for concrete slab-on-grade, concrete topping slabs, and composite slabs on steel decking.

3. Substitute for welded wire fabric for reduction of plastic shrinkage cracking and drying shrinkage cracking where supported by ICC ES Evaluation Report or Legacy ICBO ES Report, except as otherwise indicated by Structural Drawings




4. Do not install fibermesh at exposed or polished topping slabs.

J. Integral Water-Repellent Admixture: Add to batch plant concrete mix for concrete slabs and topping slabs to seal and prevent capillary water penetration.

K. Concrete Slump: Optimize through performance mix design by batch plant to suit placement conditions, as accepted for each mix design by Architect and Structural Engineer.

L. Self-Consolidating Concrete (SCC) Range of Slump Flow Values: Concrete free of rock pockets and honeycombs. Not requiring vibration to achieve consolidation and to achieve requirements for Architectural Concrete. 1. Slabs: 18 to 28 inch. 2. Architectural Members: 24 to 30 inch. 3. Wall - Normal Reinforcement: 18 to 28 inch. 4. Wall and Columns - Heavy Reinforcement: 24 to 28 inch.

1.6 SUBMITTALS


B. Shop Drawings: Submit concrete placement procedures and plan drawings showing locations of isolation joints, contraction (control) joints, and construction joints for slab-on-grade concrete. Locations and details of form ties and recesses; details of joints, anchorages and other accessories.

C. Mix Designs: Sign by batch plant quality control engineer or responsible agent for each design. Include for each mix design: 1. Method and test data used to establish mix proportions.

a. Include supporting test records for field experience method or trial batch method for each mix design.

b. Include date of test and batch plant location. 2. Concrete compressive strengths. 3. Water/cement ratios, corresponding cement content, and water content. 4. Linear shrinkage. Mix designs with no test data may substitute shrinkage reducing

admixture in proportions conforming to manufacturer’s instructions. 5. Admixtures and additives. 6. Fiber reinforcement. 7. Slump or slump flow. 8. Hot and cold weather designs. 9. Air entrainment for each design. 10. Ingredients, proportions, and source of materials. 11. Location and intended use.

D. Product Data: Submit manufacturer's printed data and instructions for proprietary products and equipment, including for: 1. Admixtures and additives. 2. Fiber reinforcing. 3. Bonding agents. 4. Screeding products and equipment. 5. Hardener densifiers, 6. Dry shake color hardener densifier.




7. Curing materials and methods. 8. Joint systems.

E. Certification: Written and signed by batch plant quality control engineer or responsible agent. Certify that mix design conforms to provisions of this Section and that ingredients for each mix design are compatible.

F. Samples: Joint filler materials.

G. Contractor Qualifications as specified in this Section.


A. Architecturally Exposed Concrete: Conform to ACI 301, Section 6 and ACI 303R for Architectural Concrete at exterior and interior exposed to view concrete surfaces, except at non-public utility spaces such as mechanical and electrical spaces.

B. Moisture Content and Alkalinity Testing for Concrete Slab: 1. Take measures to control concrete mix design water content, placement, curing, and

other procedures as necessary to achieve acceptable moisture and alkalinity content within time period scheduled for installation of finish flooring systems specified under other Sections.

2. Conduct testing as specified under PART 3 of this Section under Field Quality Control testing for concrete slabs.

3. Following initial curing period, take necessary measures to control temperature and humidity levels and to remove moisture through ventilation to outside of building as specified by Section 015123. Do not use direct-fired propane or natural gas heaters or other moisture generating heating equipment.

C. Concrete Mix Design: 1. Do not change brands and sources of cement, aggregates, admixtures, and additives

during course of construction, except as accepted by Architect and Structural Engineer.

2. Supply mix design from same batch plant, using same source for mix ingredients, as submitted for supporting test data.

3. As basis for acceptance, submit new mix design from batch plant indicating that shrinkage, cracking, strength, and other properties are compatible with original mix design.

D. Products used to harden, densify and seal cast-in-place concrete floor in Base Bid work must be manufactured by same company that produce the hardener, densifier and sealer in Alternate No. 4 - Polished Concrete Floor specified in Section 033550.

1.8 QUALIFICATIONS

A. Installers/Applicators: Company specializing in work of this Section with minimum 5 years documented experience in commercial quality work of comparable scope and quality. The installer / applicator must also provide documentation identifying a minimum of 10 projects of comparable scope and quality that they successfully completed during this 5 year period.




B. Applicators for Hardener Densifiers: Trained and authorized by manufacturer as qualified prior to Bid Date, or accepted by Architect. Applicators must be qualified by manufacturer to install Hardener Densifier, Sealer specified in Section 033550, Polished Concrete Floor, as part of Alternate No. 4.


A. Conform to Regulatory Requirements specified by Section 014100.

B. Testing and Special Inspections: Conduct testing under provisions of Section 014523 and the General Structural Notes. 1. Conform to provisions of IBC Chapter 17, reference standards specified by ACI 318,

procedures specified by ACI 301. 2. Conduct during placement of concrete with specified 28 day strength greater than

2500 psi following procedures conforming to ASTM C31, ASTM C39, and ASTM C143, and as specified Section 014523.

1.10 MOCK-UPS

A. Before beginning work of this Section, provide in compliance with provisions of Section 014300.

B. Slab Finishes: Mock-up for texture and finish appearance as noted below. Make mock-ups for each surface treatment before placement. 1. Light Broomed and Troweled Finishes: Mock-up as instructed by Architect for texture

and finish appearance. 2. Locate as directed by Architect.

C. Special Finishes: Mock-up hardener densifier clear coat systems. 1. Perform by same applicators and crews that will perform work. 2. Match Architect accepted/manufacturer supplied sample in Architect’s office. 3. Locate mock-ups as directed by Architect.

1.11 PRE-INSTALLATION CONFERENCE

A. Arrange, in accordance with Section 013119.

B. Attendance: Contractor, Installer, Owner, Architect, Structural Engineer, manufacturer’s representative, batch plant representative, and those requested to attend.

C. Meeting Time: Minimum 3 weeks prior to beginning work of this Section and work of related Sections affecting work of this Section.

D. Location: Project Site.

E. Review procedures for conducting work of this Section, including mock-up schedule; mix design additives; conditions for acceptance of concrete at project site; placement procedures; finishing options and procedures; curing and crack control procedures; testing for acceptable moisture emissions, alkalinity pH levels, and relative humidity of concrete slab prior to installation of finish flooring; and effect of the above on project schedule.





A. Conform to provisions of Section 016600 and manufacturer's instructions.

B. Mixing and Delivery: Conform to ASTM C94.

C. Sampling at Delivery: Conform to ASTM C172. Cure 4 inch by 8 inch cylinders to provisions of ASTM C31 and compression test compressive strength of cylinders to ASTM C39 and as specified Section 014523.

D. Batch Tickets: Conform to ASTM C94 Option A or C. Accompany with each load, fully executed, and signed. Log in with inspector at time of entry. Conform to Source Quality Control requirements specified by this Section. 1. Include water content and water withheld at batch plant. 2. Indicate time to nearest minute that batch was dispatched from plant, when it arrived

at site, and when unloading began and was finished. 3. Indicate ambient air temperature and concrete internal temperature of at time of

arrival. 4. Make written record of water and other additives added to design mix following time

that mix truck has left batch plant.

E. Reject concrete that has reached internal temperature of 89 degree F or above and when temperature has risen 5 degrees in 10 minutes, indicating that concrete is setting up prior to discharge.

F. Store products in accordance to ACI 301. Do not use admixtures that have been in storage at project site for more than 6 months or which have subject to freezing, except as accepted by Architect and Structural Engineer based on test results.


A. Environmental Conditions: Conform to ACI 301, 5.3.2 for placement of concrete weather considerations.

B. Protect concrete during falling rain, sleet, or snow.

1.14 COORDINATION


B. Finish Flooring: Coordinate with carpeting, resilient tile flooring, sheet flooring, and other finish flooring systems to prevent moisture conditions, bond breaking curing agents, and alkaline levels at interior concrete slabs incompatible with manufacturers’ Warranty provisions.

C. Curing Compounds: Where permitted, verify compatibility with flooring adhesives for finish flooring specified under work of other Sections or remove completely prior to installation of finish flooring systems conforming to provisions of this Section.




PART 2 PRODUCTS

2.1 MANUFACTURERS – ADMIXTURES, AGENTS, AND COMPOUNDS

A. BASF Construction Chemicals LLC 1. (253) 208-1570, Fax (253) 756-5025, Email [email protected] (Scott Di Loreto) 2. Website: www.basf.com/usa

B. ChemRex, Sonneborn 1. Website http://www.chemrex.com .

C. Curecrete Distribution, Inc. 1. Tel (425) 485-8373, Fax (425) 485-7852, Cell (206) 498-4075, Email

[email protected] (Ron Ogden Associates, Inc, Ron Ogden). 2. Website http://www.ashfordformula.com

D. Davis Colors 1. Tel (800) 356-4848, (323) 269-7311, Fax (213) 269-1053 2. Website: www.daviscolors.com

E. Dayton Superior 1. (888) 977-9600 2. Email: [email protected]

F. Euclid Chemical Co. 1. Cell (253) 670-1510, Tel (253) 946-2436, Fax (253) 941-2635, Email

[email protected] (R.W. Simmons & Associates, Inc., Bob Simmons, FCSI, CCPR).

2. Website http://www.euclidchemical.com

G. Everdure Caltite System 1. Tel (206) 764-3119, Fax (206) 764-3012, Cell (206) 369-2945, Email

[email protected] (Ken Dzioba, Caltite Mkg/Sales Mgr).

H. Forta Corporation 1. Cell (206) 786-3591, Tel (360) 650-9038, Fax (360) 733-4788, Email

[email protected] (Marlen Hansen, Mfrs Rep). 2. Website http://www.comarltd.com / http://www.fortacorp.com

I. Grace Construction Products 1. Cell (206) 979-0745, Tel (800) 852-6055 Ext 1168, Fax (425) 844-2644, Email

[email protected] (Dave Lawton) 2. Website http://www.na.graceconstruction.com

J. Kryton International Inc. 1. Cell (206) 786-3591, Tel (360) 650-9038, Fax (360) 733-4788, Email

[email protected] (Marlen Hansen, Mfrs Rep). 2. Website http://www.comarltd.com / http://www.kryton.com

K. L&M Construction Chemicals 1. Tel (425) 562-6076, Fax (425) 562-6149, Cell (425) 785-3242, Email

[email protected] (Bill Pavitt CSI, Rep),




2. Website http://www.lmcc.com

L. LM Scofield Company 1. Voice Mail (800) 800-9900 Ext 5230 , Direct Line (206) 790-6882, Email

[email protected] (Matthew Simons). Tel (800) 800-9900 (Home Office). 2. Website http://www.scofield.com

M. Propex Concrete Systems 1. Tel (425) 746-0900, Fax 425-746-8225, Cell (425) 484-1745, Email:

[email protected] (Mike Schroeder). 2. Website http://www.fibermesh.com

N. ProSoCo, Inc. 1. Cell (206) 384-8057, Tel (425) 235-7216, Fax 888-434-7091, Email

[email protected] (Gene Bollinger). 2. Website: http://www.prosoco.com

O. Solomon Colors 1. Tel (800) 624-0261, Fax (800) 624-3147 Email [email protected] (Home

Office, Bill Dube). Tel (503) 243-1082 (Chemical Distributors, Inc., John Mitchell) 2. Website http://www.solomoncolors.com.

P. Vexcon Chemicals Inc. 1. Tel (888) 839-2661, Cell (215) 828-9797, Email [email protected] (Jennifer Faller,

Business Development Mgr / Daryl Manuel, President) 2. Website http://www.vexcon.com .

Q. WR Meadows 1. Tel (206) 282-9759, Cell (206) 484-8236, Email [email protected] (Norcoe, Inc, Jim

Sullivan, Mfrs Rep). 2. Website http://www.wrmeadows.com.

R. US MIX, US SPEC Industraseal. 1. Tel (800) 397-9903, Cell (303) 378-2034, Email [email protected] (Megan Lord,

Northwest Market Manager). 2. Website http://www.usspec.com.

S. Substitution Requests to Specified Products: Comply with provisions of Section 012500.

2.2 MATERIALS

A. Portland Cement: ASTM C150, gray color. Provide white cement at Architectural Concrete. 1. Interior: Type I and Type II. Do not use air entrained concrete at interior slabs. 2. Exterior: Type I with specified air entrainment admixture, preferred to Type IA and

Type IIA air-entrained concrete. Type IIIA accepted for cold weather construction. 3. Other: Type I, or as specified by Structural Drawings.

B. Aggregates: 1. Fine and Coarse Aggregate Grading and Quality: ASTM C33. 2. Coarse Aggregate Class Designation: As indicated by Table 3 for Type or Location of

concrete for Moderate Weathering Region, including 5M for exterior Architectural Concrete.




3. Size: Do not exceed 3/4 distance between reinforcing steel or 1/3 thickness of concrete slabs and toppings and as specified on Structural Notes. a. Curbs, Sidewalks, and Pavements. Maximum 1 inch aggregate. b. Slabs-on-Grade, Slabs, and Structural Concrete: Maximum 3/4 inch aggregate.

4. Free of deleterious substances that may cause expansion of concrete or react with alkalis in concrete.

5. At Exposed Polished Concrete Floors: Use 3/8 inch pea gravel.

C. Fly Ash: ASTM C618, Class F or Class C Pozzolan, loss on ignition not exceeding 3 percent at concrete with entrained air.

D. Sand: Washed, ASTM C33.

E. Mix Water: Conform and test to ASTM C1602. 1. Recycled mix water conforming to and tested to ASTM C1603 for maximum permitted

solids of 50,000 parts per million, or 5 percent, of total mix water. a. Wash water from mixer washout or as part of a concrete mix. b. Water collected in a basin as a result of storm water runoff at a concrete

production facility. Site water, water from truck exterior, and undocumented water is not permitted to enter containment system.

2. Clean water free from acids, alkalis, organic material, minerals, salts, and other deleterious materials. Seawater not accepted.

F. Cementitious Materials: Use fly ash, pozzolan, ground granulated blast-furnace slag, and silica fume as needed to reduce the total amount of portland cement, which would otherwise be used, by not less than 40 percent. Limit percentage, by weight, of cementitious materials other than portland cement in concrete as follows: 1. Fly Ash: 25 percent. 2. Combined Fly Ash and Pozzolan: 25 percent. 3. Ground Granulated Blast-Furnace Slag: 50 percent. 4. Combined Fly Ash or Pozzolan and Ground Granulated Blast-Furnace Slag: 50 percent

portland cement minimum, with fly ash or pozzolan not exceeding 25 percent.

2.3 FIBER REINFORCEMENT

A. Plastic Shrinkage Crack Fiber Reinforcement: ASTM C1116 Type III, polypropylene or polyethylene fibers for plastic shrinkage and plastic settlement crack control. 1. Interior Exposed Slabs: 100 percent virgin monofilament polypropylene strand fibers,

mix ratio graded by multiple lengths, and thickness, designed not to be visible at concrete surface. Not accepted as replacement for welded wire fabric or other steel crack control reinforcement shown on Structural Drawings. a. Fibermesh 150 b. Forta Econo-Mono c. Grace, Microfiber d. Nycon, ProConM

2. Interior Slabs Under Finish Flooring Systems and Exterior Slabs: Fibrillated micro fibers accepted for replacement of welded wire fabric crack control reinforcement a. Fibermesh 300, 100 percent virgin fibrillated polypropylene fibers mix ratio

graded by multiple lengths and thickness. b. Forta Econo-Net c. Grace, Grace Fibers d. Nycon, ProConF




3. Macrofiber: a. Fibermesh 300, 100 percent virgin fibrillated polypropylene fibers mix ratio

graded by multiple lengths and thickness. b. Forta Econo-Net c. Grace, STRUX 90/40, 100 percent polypropylene/polyethylene blend fibers. d. Nycon, XL

2.4 ADMIXTURES, AGENTS, AND COMPOUNDS

A. Admixtures - General: 1. Provide products from single manufacturer, or supply manufacturer certification that

admixtures are compatible in combination with cement and aggregates. 2. Free of calcium chloride and thiocyanate. Containing no more than 0.05 percent

chloride ions.

B. Air-Entraining Agent: ASTM C260 for exterior concrete. 1. BASF Micro-Air or AE 90 2. Euclid, Air Mix 3. Grace, Daravair 1000

C. Self-Consolidating Concrete (SCC) (at Cast-In-Place Insulated Concrete Wall Panels): Polycarboxolate based superplasticiser designed to consolidate concrete without need for vibrating. 1. BASF, Rheodynamic Self-Consolidating Concrete 2. Grace Construction Products, ADVA Cast 530, or other ADVA Series as instructed by

manufacturer. 3. Substitutions as accepted by Architect. Submit per provisions of Section 012500.

D. Shrinkage Reducing Admixture (SRA): Add at one gallon per cubic yard of concrete for mix designs conforming to accepted test data for linear shrinkage and as instructed by manufacturer. 1. BASF, Tetraguard AS20 2. Grace, Eclipse Plus and Eclipse Floor

E. Integral Water-Repellent Admixture: Non-chloride formula system of hydrophobic components and surface active agents, making pores and pore linings resistant to water absorption and capillary action, inhibiting water intrusion and vapor transmission through hardened concrete, tested ASTM C642. 1. BASF Rheomix 235 2. Grace, Darapel 3. Euclid, Integral Waterpeller

2.5 SHEET MEMBRANE CURING MATERIALS

A. Accepted Curing Methods: 1. Conform to ACI 302.1R Section 9.2 using wet curing, wet covering, moisture retaining

coverings, or polyethylene film or waterproof paper curing methods, using materials specified by Section 5.9.

2. ACI 308, Section 2.2 – Water Curing or 2.3 - Sealing Materials using wet film curing methods.




B. Moisture Retaining Covering: Tested to ASTM C156 for moisture loss of not more than 0.055 g/cm3 in 72 hours. 1. Polyethylene Curing Film: ASTM C171 Type 1.1.2.2, 10 mil thick, opaque white on

one side. 2. White Burlap-Polyethylene Sheeting: Meet or exceed ASM C 171 Type1.1.3, synthetic

burlap with minimum 10 mil (20 – 40 mil preferred) opaque white polyethylene coating. a. Reef Industries, Armorlon Division, Transguard Reusable Wet Cure Covers,

specified for type and quality. b. Website http://www.reefindustries.com

3. Waterproof Paper (Reinforced Kraft Curing Paper): Meet or exceed ASTM C171, Type 1.1.1.2, two sheets of reinforced kraft paper cemented together with bituminous adhesive with one white reflective surface, non-staining, moisture retentive. a. Fortifiber Orange Label Sisalkraft 280, specified for type and quality. b. Website http://www.fortifiber.com

2.6 CURE AND SEAL COMPOUNDS

A. Liquid Membrane Forming Curing Compounds: Not accepted except in writing by Architect under special conditions in lieu of water curing methods. Where accepted, include shrinkage reducing admixture (SRA) in mix design and apply monomolecular surface evaporation retarder over concrete slabs.

B. Strip concrete slab of curing compounds before applying hardener densifiers, floor finishes, and other treatments incompatible with curing compounds.

C. Film Forming Modified Acrylic Copolymer: Conforming to ASTM C1315, Type 1, Class A or B. 1. Designed to cure, seal, and dustproof concrete. 2. VOC compliant. 3. Free of silicones, waxes, oils, and other bond breakers.

D. Dissipating Resin Cure: Conforming to ASTM C309 Type L. The film shall chemically break down in a 6 to 9 week period and shall not affect adhesion of floor coverings or membranes and shall be compatible with colored concrete. 1. BASF KURE 1315 2. Burke, RES-X Curing Compound 3. Euclid, Kurez DR 4. Dayton, Day-Chem Rez Cure (J-11-W)

2.7 MONOMOLECULAR SURFACE EVAPORATION RETARDER

A. Odorless, spray applied, water-based liquid polymer, forming monomolecular film on plastic concrete, evaporating and dissipating as concrete hardens. 1. BASF, Confilm 2. Dayton Superior, SureFilm J-74 3. Edoco Burke Film RTU 4. L & M Construction Chemicals, E-Con 5. US MIX, US SPEC Monofilm ER 6. WR Meadows, EVAPRE




B. Use to reduce rapid bleed water evaporation resulting in plastic shrinkage cracking and slab curl for concrete slabs with low water/cement ratio, low relative humidity, wind, and heat conditions.

C. Spray over newly placed concrete before and during concrete finishing in at least three separate operations.

2.8 FLOOR HARDENER DENSIFIER (Conc-1)

A. 100 percent silicate or siliconate sealer, hardener, densifier. VOC compliant, odorless, water-white, non-yellowing for sealing exposed slabs not receiving finish flooring. 1. ChemRex, Sonneborn, Sonocrete Kure-N-Harden or Sonocrete Lapidolith, Sure Hard

(J-17) 2. Euclid, EUCO Diamond Hard 3. L&M, Seal Hard 4. Prosoco, LS/CS Consolideck 5. Vexcon, Starseal PS 6. WR Meadows, Liqui-Hard

2.9 PENETRATING LIQUID FLOOR TREATMENTS FOR POLISHED CONCRETE FINISH (Conc-2):

A. Refer to Section 033550, Polished Concrete Floor Finish for treatment and finishing of concrete slab as part of Alternate No. 4 – Polished Concrete Floor at Office Areas

2.10 RESINOUS EPOXY MORTAR FLOORING FOR CONCRETE FINISH (Conc-3):

A. Refer to Section 096724, Resinous Epoxy Mortar Flooring for treatment and finishing of concrete slab as part of Alternate No. 5 – Epoxy Floor at Kitchen Areas

2.11 JOINT FILLERS AND SEALERS

A. Exterior Recessed Joint Fillers: ASTM D1751, preformed asphalt impregnated joint filler.

B. Interior Joint Sealant: Industrial quality, two component, semi-rigid epoxy or polyurea, USDA approved, ASTM D2240, minimum Shore A 75-85, matching approximate color of natural concrete finish. Specified for type and quality: 1. Polyurea Sealant:

a. Dayton Superior, Joint Fill. b. Edoco Burke, JointFill. c. L&M Construction Chemicals, Joint Tite 750 d. VersaFlex, SL/75

2. Epoxy Sealant: a. Vexcon, Power Coat Epoxy Flexible Joint Sealant b. US MIX, US SPEC SR 50 EJF c. Dayton Superior, Poxy Fil (J-52)

C. Joint Sealant and backer rod: As specified Section 079200.

2.12 BONDING AGENTS

A. Bonding Agents: ASTM C1059 Type II and ASTM C1042 Type II acrylic emulsion designed to permanently bond new concrete and Portland cement sand mixes to horizontal and




vertical in-place concrete at interior and exterior conditions or an approved substitution with equal or greater load capacities given in an ICC Report. 1. Edoco Burke, Acrylic Bondcrete 2. Euclid, Flex-Con 3. Grace, Daraweld C 4. Larsen Products Corp., Weldcrete 5. L&M Construction Chemicals, Inc, Everbond 6. Vexcon, Envirostong 7. US MIX, US SPEC Acrylcoat

2.13 EPOXY ADHESIVE ANCHOR SYSTEMS

A. Two-Component Adhesive Anchor Systems: Shear and Tensile Bond Strength: Greater than hardened concrete strength conforming to ASTM C882. Compatible for use with damp concrete. As indicated on the Structural Drawings. 1. Simpson Set XP Adhesive Anchor, ICC ES Evaluation Report ESR 2508

2.14 GROUTS

A. Adhesive Epoxy Grout: Shear and Tensile Bond Strength: Greater than hardened concrete strength conforming to ASTM C882. Compatible for use with damp concrete.

B. Non-Shrink Grout under Structural Base Plates and General Use: 1. Natural aggregate, ASTM C1107 Grade C, tested 25 to 30 seconds per ASTM C939 at

temperature extremes of minimum 45 degrees F and maximum 90 degrees F. 2. Compressive Strength at Fluid Consistency: 7500psi at 28 days, tested to ASTM C109

as modified by ASTM C1107. 3. Working Time: 30 minutes. 4. Products:

a. Simpson Strong-Tie, Set-XP b. BASF MasterFlow 555 c. Burke, Nonferous Nonshrink Grout d. Dayton Superior 1107 Advantage Grout e. Degussa MasterFlow 928 f. Degussa MasterFlow 713

5. Grout for Cold Weather applications a. Dayton Superior Turbo Grout (9000 psi) / Day ton Superior Turbo Grout LT-12

(12,000 psi)

C. Non-Shrink Grout Under Mechanical Equipment: Metallic-aggregate, ASTM C1107 Grade B, tested 25 to 30 seconds per ASTM C939 at temperature extremes of minimum 45 degrees F and maximum 90 degrees F. 1. Compressive Strength at Fluid Consistency: 9000 psi at 28 days, tested ASTM C109. 2. Working Time: 30 minutes. 3. Products:

a. Master Builder's, Embeco 855

2.15 SCREEDS

A. Laser Screeding: Preferred and accepted in lieu of base screeds specified by this Section.




B. Ground Set Screed Stakes: Not accepted for interior slabs. Do not penetrate underslab vapor retarder sheeting underlying concrete slabs with screed stakes.

C. Base Set Screed Posts: Non-stake screeds accepted. Following specified for type and quality and as accepted by Architect. 1. Fabricated, removable, 1/4 inch by 12 inch by 12 inch steel base plate with welded

steel or all-thread steel screed post.

2.16 ACCESSORIES

A. Expansion Joint Caps: As specified Section 031100.

B. Expansion Joint Filler: As specified Section 031100.

2.17 FINISHES

A. Verify conformance to final finishes and color based on Architect accepted mock-ups specified this Section.

B. Slab Tooling Finishes: Refer to Part 3 of this Section.

C. CONC-1: Steel troweled with hardener/densifier.

D. CONC-2 (Alternate No. 4): Polished with hardener/densifier.

2.18 SOURCE QUALITY CONTROL

A. Conform to provisions and limitations ACI 340R and ASTM C94.

B. Batching and Mixing: Conform to ASTM C94, Option A for exact proportioning of mix design.

C. Admixtures: Add to within accuracy of 3 percent. 1. Add separately and verify compatibility in design mix, conforming to manufacturer’s

instructions. 2. Reject concrete that shows signs of segregation due to use of admixtures.

D. Elapsed Time From Start of Batching at Plant to Discharge at Project Site: Conform to following except where set-reducing admixtures are added by batch plant for hauls requiring longer time periods 1. Maximum 90 minutes and maximum 300 revolutions, whichever comes first after

introducing mix water. 2. Air Temperatures:

a. Reduce mixing and delivery time to maximum 75 minutes for between 85 degrees F and 90 degrees F.

b. Reduce mixing and delivery time to 60 minutes for temperature above 90 Degrees F.

c. Monitor concrete in truck and reject if temperature rises to 89 degrees or 5 degrees F in 10 minutes, indicating that concrete is setting up prior to discharge.

E. Mix Water: When feasible, add mix water required for mix design at batch plant.




F. Accelerating and Set Retarding Admixtures: 1. Accepted for long hauls for extending transportation time, cold weather, and hot

weather conditions conforming to hot and cold weather placement requirements. 2. Measure concrete temperature and confirm that temperature has not exceeded 89

degrees F or 5 degrees F in 10 minutes before acceptance at site.

G. Batching of Dry Materials and Adding Mix Water at Site: 1. Accepted for long hauls and for extending transportation time as an alternate

procedure to adding accelerating and set retarding admixtures. 2. Add mix water under pressure at both front and back of mixing drum. 3. Mix at mixing speed for 70 to 100 revolutions before discharging.

H. Adding Mix Water at Project Site: 1. Do not add water to batch plant mix design except as prescribed by batch plant mix

designer's written instructions. 2. Add mix water only when Special Inspector is present. 3. Truck drivers and others are not authorized to add water, except under direct

supervision of batch plant quality control representative present at project site. 4. Accurately meter mix water to exact quantity sufficient to reach slump specified by

batch plant mix design. Do not exceed specified slump. 5. Do not exceed design water/cement ratio. 6. Make written record of water added to design mix and submit to Special Inspector at

project site.

I. Do not use calcium chloride containing products.

PART 3 EXECUTION

3.1 EXAMINATION

A. Verify installation conditions as satisfactory to receive work of this Section before beginning.

B. Verify undamaged under slab vapor retarder conforming to Section 072616. Sand and granular fill over vapor retarder not accepted.

C. Verify that anchors, seats, plates, reinforcement, and other items cast into concrete are accurately located and are securely in place.

D. Review information and procedures from pre-installation conference with installers and finishers.

3.2 PREPARATION

A. Protect Surrounding Areas: Preclude damage from work of this Section.

B. Interior Slab-On-Grade: Install vapor retarder sheeting specified under work of Section 072616 directly under concrete slab.

C. Protect finishes below exterior vented slab on metal deck for a minimum of 14 days after placing concrete.




D. Damaged Vapor Retarder: Lap new vapor retarder, 6 inch minimum, over damaged areas and seal watertight with tape specified Section 072616.

E. New Concrete Cast Against Existing: Clean concrete with steel brush and apply bonding agent as instructed by manufacturer prior to placement of new concrete.

F. Reinforcement Doweled into Existing Concrete: Drill holes into existing concrete, place adhesive grout, and insert steel dowels as specified by structural drawings.

G. Formwork, Reinforcing, and Embedded Items: In place, and approved before placement of concrete.

3.3 CONCRETE PLACEMENT

A. Conform to IBC Chapter 19, ACI 301, ACI 304R, ACI 304.2R, and provisions of Contract Documents.

B. Convey concrete using clean equipment of type and size needed for continuous concrete flow without loss of consolidation and separation of ingredients. 1. Do not use aluminum pipe for pumping concrete. 2. Do not place concrete pumping slurry in forms.

C. Place monolithically and deposit concrete as close to final position as practical.

D. Consolidate concrete, except slabs on grade, in forms by mechanical vibration as specified and in accordance with ACI 309, except as applicable for self-consolidating concrete (SCC).

E. Place concrete not to disturb in-place items such as reinforcement, inserts, embedded parts, formed expansion/contraction (control) joints, vapor retarder, insulation, and formwork.

F. Place concrete continuously between construction and expansion/contraction (control) joints. Place concrete at floor slabs in alternating sections (checkerboard) to minimize cracking.

G. Place each lift while previous lift is still plastic.

H. Vibrate to obtain thorough consolidation, and complete filling of forms.

I. Exposed Building Concrete Walls: Provide self-consolidating concrete (SCC).

J. Edge Forms and Screeds: Use specified screed systems that will not penetrate underlying vapor retarder at interior slab-on-grade.

3.4 CONCRETE TOPPING SLABS

A. Bonded Cementitious Topping Slabs, Mortar Setting Beds, and Underlayment: 1. Prepare base slab as specified this Section or roughen surface of concrete base course

by bead blasting or other suitable method and remove foreign matter. 2. Broom and vacuum clean. 3. Install dividers, edge strips, reinforcing steel, and other cast-in items. 4. Apply bonding agent to base course as instructed by manufacturer.




B. Unbonded Cementitious Topping Slabs and Mortar Beds: 1. Install cleavage membrane, such as a polyethylene sheet membrane, over plywood

base slab to prevent joints and cracks from telegraphing through topping slab. 2. Install dividers, edge strips, reinforcing steel, and other cast-in place items.

C. Composite Slabs on Steel Decking: 1. Broom and vacuum clean surfaces. Remove any bonding-inhibiting residues. 2. Install dividers, edge strips, reinforcing steel, and other cast-in place items.

3.5 COLD WEATHER CONDITIONS

A. Conform to ACI 306R and ACI 306.1.

B. Do not place concrete on ice, snow, frost, or frozen substrates including subgrades, formwork, reinforcement, and embedded items.

C. Temperature of Concrete: Maintain for 7 days between 50 degrees F and 90 degrees F curing temperature.

D. Take measures to protect concrete from freezing when mean daily temperature is below 40 degrees F during first 5 days after placement.

E. In severe weather, at end of 5 days, gradually decrease temperature to ambient over 24 hour period.

F. Use of Heaters: 1. Do not use direct natural gas, propane, or other moisture and carbon-dioxide

producing heaters 2. Maintain uniform temperature throughout heated areas. 3. Prevent rapid drying of new concrete. Elevate heaters and protect floor slabs around

heaters with damp sand.

G. Insulation: 1. Accepted to retain heat in newly placed concrete. 2. Conform to ACI 306R and ACI 306.1 for type and amount satisfactory for given

conditions. 3. Protect corners and edges of concrete placement.

3.6 CONCRETE SLAB FINISHING

A. Finish concrete slabs to ACI 301, ACI 302.1R, and as accepted from accepted mock-ups specified by this Section.

B. Finish concrete slabs as specified in Sections 033550, Polished Concrete Floor Finish, if Alternate No. 4 – Polished Concrete Floor in Office Areas is awarded.

C. Finish concrete slabs as specified in Sections 096724, Resinous Epoxy Mortar Flooring, if Alternate No. 5 – Epoxy Floor in Kitchen Areas is awarded.

D. Screeding: 1. Screed to specified floor levelness and flatness tolerances 2. Tool salient edges of concrete.




3. Make sharp arise at wall to floor conditions.

E. Scratch Finish: 1. Provide for bonded cementitious underlayments and toppings. 2. Screed concrete, leaving rough surface.

F. Float Finish: 1. Provide before other finishes to embed aggregates below concrete surface, to make

level and flat, and to compact and consolidate slab in preparation for other finishing operations.

2. Allow concrete time to bleed naturally before beginning work. 3. Bull float followed by power floating to compact plastic mass. Do not overwork

concrete.

G. Light Broom Finish: 1. Provide at exterior paved surfaces. 2. Float finish slab and promptly after initial set, broom finish surface uniformly and

perpendicularly to traffic in accepted texture.

H. Steel Troweled Finish: 1. Provide at exposed interior slabs, except where broom or other finish is indicated. 2. Static Coefficient of Friction: Provide flooring materials with the following values as

determined by testing according to ASTM C1028: a. Level Surfaces: Minimum 0.8.

3. Float finish slab. 4. Steel trowel finish after surface is hard enough to ring under trowel. 5. Retain moisture in slab surface during finishing. 6. Provide fog spray in dry or windy weather. 7. Finish to specified tolerances. 8. Incorporate hardener densifier as recommended by Manufacturer.

I. Do not add water to concrete surfaces to aid in finishing.

3.7 CONCRETE WALL FINISHING

A. Light Sandblast Finish: 1. Perform sandblasting promptly after initial set of concrete and stripping of forms. 2. Sandblast evenly and uniformly in texture accepted by mock-up.

B. Exposed Plywood Formed Finish: As specified in Section 031000.

3.8 CONSTRUCTION, ISOLATION, AND CONTRACTION (CONTROL) JOINTS

A. Conform to ACI 302.1R. Locate where shown on Drawings and accepted shop drawings. Verify locations with Architect and Structural Engineer before proceeding.

B. Construction Joints Between Successive Placements of Concrete: Locate to least impair structural integrity. Locate joints perpendicular to primary reinforcing steel. 1. Extend reinforcing steel through joints. 2. Form true straight slab edges with top surfaces in alignment. 3. Form keyways or dowel between slabs as shown on Drawings 4. Remove laitance and defective concrete. Wash surface.




5. Apply bonding agent against hardened concrete. 6. Dampen concrete surface. Remove excess water from formwork. 7. Saw cut contraction (control) joints over construction joints between individual slab

placements.

C. Isolation Joints: 1. Establish complete separation through floor slabs at junctions with other building

elements and points of restraint including walls, columns, equipment foundations, and stairways, except elements requiring lateral restraint from slab.

2. Fill to complete depth of joint with preformed asphalt impregnated joint filler, leaving 1 inch clearance at top for joint sealant and backer rod at interior slabs and exterior concrete.

D. Saw Cut Contraction (Control) Joints: Saw cut interior and exterior slabs on grade, using soft cut method over green concrete as soon as slab will support foot traffic and before slab begins to experience shrinkage cracking, conforming to ACI 302.1R Chapter 3. 1. Saw cut contraction (control) joints are not permitted in structural slabs-on-grade or

composite slabs on steel decking. 2. Space saw-cuts at 2 to 3 foot spacing for each 1 inch depth of concrete slab and as

accepted by Architect and Structural Engineer, unless otherwise show on Drawings. 3. Saw-cut joints minimum 1 inch deep and not less than 1/4 depth of concrete slab. 4. Saw-cut joints at 45 degree angle from corner of diamond shaped slab panels. 5. Exactly meet corners of cut outs to prevent cracking from corners. 6. Locate contraction (control) joints over structurally supporting beams. 7. Maximum length to width ratio of panels in floor slabs is 1.5 to 1, although 1 to 1 is

preferred. 8. Maximum length to width ratio of panels in exterior pavement is 1.25 to 1, although 1

to 1 is preferred. 9. Do not form T-shaped or L-shaped saw-cut joints in panels. 10. Make joints continuous. Do not offset or stagger. 11. Space contraction (control) joints equal distance between contraction (control) joints at

column lines, over construction joints, supporting structural beams, and change of substrate.

12. Burnish edges of joints while concrete is still green. 13. Do not saw cut slab on metal deck except as specifically shown on Structural

Drawings.

E. Cold Joints and Penetrations: Conform to provisions of Section 031100. Install expanding joint strip as instructed by manufacturer.

F. Projections through Prepared Openings: Fill voids with non-shrink grout containing waterproof concrete as instructed by manufacturer.

3.9 CURING CONCRETE WALLS

A. Conform to ACI 301 Section 5.3.6 and ACI 308.

B. At temperatures below 40 degrees F, protect concrete from freezing in accordance to ACI 306.1




C. Cure concrete for minimum 7 days, maintaining concrete surface temperature of not less than 50 degrees F, and as accepted by Architect and Structural Engineer for high early strength concrete.

D. Water cure to maintain minimal moisture loss, and protect from excessive heat and cold during 7 day curing period or until concrete has reached 70 percent of average compressive strength (f=c).

3.10 CURING CONCRETE SLABS

A. Conform to methods specified by ACI 301 Section 5.3.6, ACI 302.1R Section 9.2.1 through 9.2.3.2 and ACI 308 Section 2.2 through Section 2.3.2. Liquid membrane forming curing compounds not accepted.

B. Water Curing and Sheet Membrane Curing: Conform to ACI 302.1R Section 9.2, excluding Section 9.2.4 and ACI 308 Section 2.2 or Section 2.3, excluding Section 2.3.3. Liquid film curing not accepted. 1. Fog spray or sprinkle and take other measures to maintain continuous layer of water

over concrete surface. 2. Cover concrete slab with wet burlap or waterproof curing film. 3. Secure edges and corners of curing film to maintain in place over concrete and

prevent drying. 4. Leave curing film in place as necessary to maintain suitable moisture content and

temperature of concrete for 7 day curing period. 5. Keep concrete moist. Add water as needed to maintain wet surface. 6. At exterior slabs not subject to drying, curing film may be omitted when accepted by

Architect.

C. Curing using Curing Compounds: Do not use this method except under special conditions as instructed or accepted by Architect. Conform to manufacturer's instructions. 1. Before beginning application, verify compatibility with adhesives at floor slabs to

receive interior finish flooring and compatibility with floor hardener at interior floor slabs to remain exposed.

2. Apply one coat on new concrete as soon as surface water disappears. 3. Apply with low pressure spray at 200-300 square feet per gallon. 4. Squeeze off excess and allow to dry thoroughly. 5. Cover with specified polyethylene curing film. 6. Reapply within 3 hours following exposure to rainfall. 7. Apply monomolecular surface evaporation retarder over concrete slabs, conforming to

manufacturer instructions. 8. Prior to installation of finish flooring systems:

a. Apply concrete stripper to remove curing compound. b. Flush surface to remove salts and residual stripper. c. Apply light muriatic acid wash as necessary to open pores. d. Flush surface with baking soda or ammonia solution to neutralize acid wash.

3.11 FLOOR HARDENER DENSIFIERS

A. Preparation: Thoroughly clean and remove, dirt, oil, laitance, curing compounds and other bond breaker substances. Conform to manufacturer’s instructions to obtain surface that when dry will absorb water without beading. 1. Water, Sheet, or Film Cured Concrete:




a. Apply light muriatic acid wash as necessary to open pores. b. Flush surface with baking soda or ammonia solution to neutralize acid wash.

2. Concrete Cured with Curing Compound: a. Apply concrete stripper to remove curing compound. b. Flush surface to remove salts and residual stripper. c. Apply light muriatic acid wash as necessary to open pores. d. Flush surface with baking soda or ammonia solution to neutralize acid wash.

3. Remove dirt and debris from slab before application.

B. Apply hardener densifier to interior exposed concrete slab finish (Conc-1) following curing period as instructed by manufacturer.

C. Match Architect accepted mock-up for colored hardener densifiers.

D. Do not apply hardener/densifier if Alternate No. 4 is awarded. Hardener/densifier shall be applied in Alternate Condition as specified in Section 033550.

E. Do not apply hardener/densifier if Alternate No. 5 is awarded.

3.12 JOINT SEALANTS

A. Interior Joints at Exposed Contrete: 1. Install polyurea or epoxy joint sealant approximately matching color of finish floor

slab. 2. Install backer rod at joint sealant exceeding 1 inch deep. 3. Overfill and shave sealant flush with floor surface.

B. Exterior Joints: 1. Install joint sealers and backer rod specified Section 079200 at joints separated by

joint filler. 2. Tool to concave configuration, flush to paving surface. 3. Do not install sealant at 1/8 inch wide saw cut joints.

3.13 GROUTING

A. Solid Grouting under Structural Base Plates, Mechanical Equipment and Obstructed Voids and Joints. 1. Mix grout to fluid consistency. 2. Construct liquid tight formwork and pour grout in place. 3. To prevent voids, pour grout from only one side so that flow exits from opposite side.

Work poured grout firmly in place. 4. Dry packing not permitted.

B. General Use: Include anchoring, filling cracks, and repairs such as filling rock pockets and pipe penetrations: 1. Mix non-shrink, aggregate grout to optimal fluid, flowable, or plastic consistency as

necessary for solid grouting and repair. 2. Trowel grout at plastic consistency at voids and around pipe penetrations to fill voids

and to match adjacent surfaces.




3.14 TOLERANCES

A. General Tolerances: Conform to ACI 117 and ACI 302.1R for tolerances of construction and materials.

B. Vertical, Lateral, and Relative Alignment and Cross Sectional Dimensions: Conform to ACI 117 and as specified for offset between adjacent formwork facing material.

C. Floor Slab Tolerances: Conform to ACI 302.1R and ACI 117 for Floor Flatness and Floor Levelness tolerance. Measure and test to ASTM E1155 within 72 hours after placing concrete slab and prior to removal of forms.

Location Floor Profile

Quality Classification

Minimum FF and FL Numbers Required Overall F Number Minimum Local F NumberFlatness FF Level FL Flatness FF Level FL

Mechanical & Electrical Rooms, Parking

Conventional Bull Floated (1/2 inch in 10 foot)

FF 20 FL 15 FF 15 FL 10

Janitorial & Unfinished Utility Rooms

Conventional Straightedge (5/16 inch in 10 foot)

FF 20 FL 15 FF 15 FL 10

Typical Flat Finish (3/16 inch in 10 foot)

FF 30 FL 20 FF 18* FL 10

Polished Concrete Floors

Flat Finish (3/16 inch in 10 foot)

FF 40 FL 30 FF 20 ---

*Minimum Overall FF Number to Minimum Local FF Number: 5:3 Ratio (ACI specifies 2:1).

D. Slab Thickness Tolerances: 1. Cast and finish concrete slabs in constant thickness above steel framing members,

conforming to ACI 117. 2. Compensate thickness of concrete slabs over steel decking between beams,

accounting for steel deck deflection, as needed to achieve level slab.

E. FL Tolerances: Do no apply to inclined slabs, cambered slabs, and deflecting or unshored slabs.

3.15 REPAIRING FLOOR SLAB FLATNESS AND LEVELNESS

A. Correct floor flatness and floor levelness not meeting specified tolerances conforming to ACI 301 and to make suitable substrate for finish floor systems.

B. Correct high areas by wet grinding after concrete has cured at least 14 days. Make test on trial area and obtain acceptance from Architect and Structural Engineer before proceeding.

C. Correct low areas and swales at floors receiving finished flooring systems by cutting out and replacing with fresh concrete as approved by Architect.




3.16 REPAIR AND FINISHING FORMED SURFACES

A. Formwork Surfaces: Refer to provision specified by Section 031100.

B. Surface Defects: Patched and repair to specified tolerances and specifications. 1. Make smooth and free of fins, bulges, ridges, bug holes, offsets, honeycombing, and

unacceptable roughness. 2. Cut out concrete to make patches not less than 1 inch deep. 3. Chip out concrete to 3/4 inch clearance behind and around exposed reinforcing steel.

C. Gravel Pockets and other Voids: Patch and repair to match adjacent surfaces. 1. Saturate cavities and adjacent areas with clean water for 24 hours immediately before

patching and repair. 2. Apply commercial bonding agent as instructed by manufacturer 3. Parge surface with commercial repair cement mortar compound to match adjacent

areas. Use as little water in mix as possible. 4. Fill voids and finish off to match adjacent surfaces in exposed work. 5. Damp cure patch for 7 days.

D. Finishing Exposed Surfaces: Conform to ACI 301 for Architectural Concrete at exposed concrete. 1. Knock fins off and patch imperfections for a smooth surface to match adjacent

surfaces in appearance. 2. Rub rough surfaces with carborundum stone as instructed by Architect and Structural

Engineer. 3. Leave surfaces clean and smooth.

E. Sacking: 1. Patch spalls, and other surface voids and blemishes at exposed to view concrete not

conforming ACI 301 for Architectural Concrete while concrete is still green. 2. Where sacking does not meet Architect’s standards, remove and replace wall with new

concrete.

3.17 STRUCTURAL CONCRETE REPAIR (EPOXY INJECTION)

A. Prior to Substantial Completion, repair: 1. Cracks exceeding 0.005 inch width extending full depth through slabs and walls. 2. Cracks that impair structural integrity. 3. Cracks that are subject to water leakage.

B. Inject cracks with epoxy or methylmethacrylate resin. 1. Use pressure or vacuum injection methods to monolithically bond and seal cracks

without expanding cracks. 2. Submit and follow procedures acceptable to Architect and Structural Engineer.


A. Testing and Special Inspections: Conform to requirements specified Section 014523.

B. Floor Flatness (FF) and Floor Levelness (FL): 1. Test for FF and FL tolerances, as specified by this Section by certified independent

inspection agency.




2. Conduct tests, conforming to ASTM E1155, within 24 hours of after completion of slab installation and prior to removal of shoring and other supporting temporary support at spanning slabs.

3. Notify Architect and Owner of test results within 8 hours after conducting tests.

C. Concrete Slabs Receiving Resilient Flooring Systems: Perform testing by independent inspection agency acceptable to Owner to verify concrete substrate moisture content and pH level as suitable prior to installing resilient flooring system installations, conforming to manufacturer’s Warranty provisions. 1. Testing Conditions: Do not conduct field quality control testing until:

a. Building envelope is enclosed and weathertight. b. Interior ambient temperature and relative humidity are equivalent to that expected

during occupancy by Owner. 2. Moisture Emissions of Concrete Floor Slabs: Test to ASTM F1869.

a. Maximum 3 pounds in 24 hours per 1000 square foot area. b. Maximum 5 pounds n 24 hours per 1000 square foot area, under conditions

acceptable to manufacturer. 3. Alkalinity of Concrete Substrate: Test to ASTM F710. Verify maximum pH factor of

9.0 at substrate surface to receive adhesives for resilient floor finishes and as acceptable to flooring manufacturer.

4. Notify Architect in the event of moisture emissions exceeding 3.0 pounds per 1,000 square foot in 24 hours, and alkalinity levels below 7.0 pH or above 9.0 pH.

5. Coordinate with manufacturers of finish flooring products for maximum acceptable moisture emissions from concrete slabs.

3.19 ADJUSTING

A. Correct defective work not conforming to specified tolerances and referenced ACI Standards

B. Correct as necessary for smooth finished surface ready for installation of resilient flooring finishes specified under Division 9.

C. Remove and replace slabs that show excessive shrinkage cracks and slabs that do not freely drain, as instructed by Architect and Structural Engineer.

D. Following initial curing period, take necessary measures to decrease moisture emission levels to acceptable levels required for installation of finish flooring by lowering relative humidity, by increasing heat, and ventilating to exhaust moisture laden air outside. Do not use direct natural gas or propane heaters or other moisture generating heating equipment.

3.20 CLEANING

A. Clean concrete in preparation for coatings or floor coverings.

B. Use cleaning methods in accordance with ASTM D4258.

3.21 PROTECTION

A. Protect in-place concrete in accordance with ACI 301, Section 1.8.




B. Cover to protect interior exposed concrete slabs subject to foot traffic or other damage with clean, unwrinkled kraft curing paper.

C. Lay down plywood or OSB cover board over concrete slabs in pathways subject to heavy foot traffic or rolling loads over concrete.

D. Stack and stockpile materials and equipment in manner to prevent mechanical and chemical damage to concrete surfaces. Maintain stacking and stockpiling loading within structural tolerances.

E. Contain and promptly clean spills to maintain concrete suitable for bonding of finish flooring and final finishing of exposed concrete slabs.

END OF SECTION


SECTION 033100CAST-IN-PLACE INSULATED CONCRETE

SANDWICH WALL PANELS


SECTION 033100 CAST-IN-PLACE INSULATED CONCRETE SANDWICH WALL PANELS

PART 1 GENERAL

1.1 SUMMARY

A. Section Includes: 1. Cast-in-place Insulated Architectural Concrete Sandwich Wall Panels 2. Admixtures, agents and compounds. 3. Rigid Insulation Board 4. Fiber reinforced Plastic Form Ties and Spacers 5. Architecturally exposed concrete (AEC) finish

B. Related Sections: 1. Section 031100 - Concrete Forming 2. Section 032100 - Reinforcing Steel 3. Section 033000 - Cast-In-Place Concrete 4. Section 033550 - Polished Concrete Floor Finish 5. Section 072113 Board Insulation 6. Section 072616 - Below-Grade Vapor Retarder

1.2 DEFINITIONS

A. Architectural Exposed Concrete: Formed concrete that is exposed to view on surfaces of completed structure or building and that requires special concrete materials, formwork, placement, or finishes to obtain specified architectural appearance.

B. Cementitious Materials: Portland cement alone or in combination with one or more of the following: blended hydraulic cement, fly ash and other pozzolans, ground granulated blast-furnace slag, and silica fume; subject to compliance with requirements.

1.3 REFERENCES

A. Reference Standards: Most current edition at date of Bid.

B. American Concrete Institute (ACI): 1. ACI 117 - Standard Tolerances for Concrete Construction and

Materials. 2. ACI 301 - Standard Specifications for Structural Concrete 3. ACI 303R - Guide for Cast-In-Place Architectural Concrete Practice 4. ACI 304R - Guide for Measuring, Mixing, Transporting, and Placing

Concrete 5. ACI 304.2R - Placing Concrete by Pumping Methods 6. ACI 305R - Hot Weather Concreting 7. ACI 306R - Cold Weather Concreting 8. ACI 306.1 - Standard Specification for Cold Weather Concreting 9. ACI 308 - Standard Practice for Curing Concrete 10. ACI 309R - Guide for Consolidation of Concrete 11. ACI 318 - Building Code Requirements for Reinforced Concrete 12. ACI 347 - Guide for Concrete Formwork





C. American Society for Testing and Materials (ASTM) International: 1. ASTM C31 - Practice for Making and Curing Concrete Test Specimens in

the Field 2. ASTM C33 - Specification for Concrete Aggregates 3. ASTM C39 - Test Method for Compressive Strength of Cylindrical

Concrete Specimens 4. ASTM C94 - Specification for Ready-Mixed Concrete 5. ASTM C143 - Test Method for Slump of Portland Cement Concrete 6. ASTM C150 - Specification for Portland Cement 7. ASTM C172 - Standard Practice for Sampling Fresh Concrete 8. ASTM C231 - Standard Test Method for Air Content of Freshly Mixed

Concrete by the Pressure Method 9. ASTM C260 - Specification for Air-Entraining Admixtures for Concrete 10. ASTM C494 - Specification for Chemical Admixtures for Concrete 11. ASTM C618 - Specifications for Coal Fly Ash and Raw or Calcinated

Natural Pozzolan for Use as a Mineral Admixture in Portland Cement Concrete

12. ASTM C642 - Standard Test Method for Density, Absorption, and Voids in Hardened Concrete

13. ASTM C939 - Standard Test Method for Flow of Grout for Prepared-Aggregate Concrete (Flow Cone Method)

14. ASTM C1107 - Standard Specifications for Packaged Dry, Hydraulic-Cement Grout (Nonshrink)

15. ASTM C1315 - Standard Specification for Liquid Membrane-Forming Compounds Having Special Properties for Curing and Sealing Concrete

16. ASTM C1602 - Standard Specification for Mixing Water Used in the Production of Hydraulic Cement Concrete

17. ASTM C1603 - Standard Test Method for Measurement of Solids in Water

1.4 DEFINITIONS

A. Slump: The measurement of the vertical difference in height of the resulting concrete pile and the original 12 inch tall cone after the slump cone is filled then lifted.

B. Slump Flow: The measurement of the resulting horizontal diameter of the concrete pile after the slump cone is filled then lifted. This method measures the unconfined flow of the mixture.

1.5 CONCRETE MIX DESIGN REQUIREMENTS

A. Self-Consolidating Concrete (SCC) Range of Slump Flow Values: Concrete free of rock pockets and honeycombs. Not requiring vibration to achieve consolidation and to achieve requirements for Architectural Concrete. 1. Wall - Normal Reinforcement: 4 to 28 inch.

B. Performance Mix Design: 1. Prepare mix design for each type and strength of concrete by either laboratory trial

batch, verified by independent testing laboratory, or field experience methods as prescribed by ACI 301.





2. Prepare mix design information for concrete batch weights with bulk-specific gravity determinations for aggregates based on saturated surface dry (SSD) condition. Include mix information sufficient to verify through absolute volume calculations: a. Concrete Yield. b. Cement Factor. c. Water/Cement Ratio. d. Mortar to Voids Ratio.

3. When adjustment to mix design becomes necessary due to job conditions, weather, test results, changes in material properties, or other circumstances, resubmit new mix design for acceptance by Architect and Structural Engineer.

C. Proportioning and Mixing: Conform to requirements of IBC, including Chapter 19.

D. Design Strength: 1. As specified by Structural Drawings, except not less than 5,000 psi 28 day strength.

E. Length Change: As tested to ASTM C157. Where no test data is available, add shrinkage reducing admixture, conforming to manufacturer’s instructions. 1. Walls, Columns, and Beams: Maximum 0.04 percent shrinkage in 28 days.

F. Fly Ash: 1. Add to batch plant concrete mix as Portland cement replacement. Submit back-up

data for mix design. 2. Fly ash content as a percentage of total weight of cementitious material:

a. Insulated walls: Minimum 0 percent, maximum 20 percent.

G. Superplasticisers: Add high range, mid-range, and low range water-reducing admixtures to batch plant mix as means to develop sufficient slump and workability, as instructed by manufacturer.

H. Air-Entraining Agent at Exterior Concrete: Conform with ASTM C260 1. Achieve 5 percent entrained air, plus or minus 1-1/2 percent to batch plant concrete

mix, for exterior concrete exposed to earth, weather, or freezing temperatures after curing.

I. Integral Water-Repellent Admixture: Add to batch plant concrete mix for concrete walls to seal and prevent capillary water penetration.

1.6 SUBMITTALS


B. Shop Drawings: Submit concrete placement procedures and plan drawings showing locations and details of form ties and recesses; details of joints, anchorages and other accessories.

C. Thermal calculations: Provide calculations complying with ASHRAE/IESNA Standard 90.1 and confirming the effective thermal resistance for the concrete sandwich wall system.

D. Thermal bowing and crack mitigation: Provide calculations and details that indicate how wall bowing and concrete cracking will be mitigated if the concrete sandwich walls are to





include full-thickness concrete sections or metallic connectors between the concrete wythes (surfaces).

E. Mix Designs: Sign by batch plant quality control engineer or responsible agent for each design. Include for each mix design: 1. Method and test data used to establish mix proportions.

a. Include supporting test records for field experience method or trial batch method for each mix design.

b. Include date of test and batch plant location. 2. Concrete compressive strengths. 3. Water/cement ratios, corresponding cement content, and water content. 4. Linear shrinkage. Mix designs with no test data may substitute shrinkage reducing

admixture in proportions conforming to manufacturer’s instructions. 5. Admixtures and additives. 6. Slump or slump flow. 7. Hot and cold weather designs. 8. Air entrainment. 9. Ingredients, proportions, and source of materials. 10. Location and intended use.

F. Product Data: Submit manufacturer's printed data and instructions for proprietary products and equipment, including for: 1. Admixtures and additives. 2. Bonding agents. 3. Curing materials and methods. 4. Joint systems.

G. Procedures: Written procedures and drawings describing work, including for. 1. Concrete finishing. 2. Saw cutting of contraction (control) joints and construction joints. 3. Crack repair.

H. Certification: Written and signed by batch plant quality control engineer or responsible agent. Certify that mix design conforms to provisions of this Section.

I. Samples: Joint filler materials.

J. Contractor Qualifications as specified in this Section.


A. Architecturally Exposed Concrete: Conform to ACI 301, Section 6 and ACI 303R for Architectural Concrete at exterior and interior exposed to view concrete surfaces, except at non-public utility spaces such as mechanical and electrical spaces.

B. Concrete Mix Design: 1. Do not change brands and sources of cement, aggregates, admixtures, and additives

during course of construction. 2. Supply mix design from same batch plant, using same source for mix ingredients, as

submitted for supporting test data. 3. Alkali Resistance: Provide reports showing compliance with accelerated aging

equivalent to up to 100 years of service in concrete.





1.8 QUALIFICATIONS

A. Installers/Applicators: Company specializing in work of this Section with minimum 3 year documented experience in commercial quality work of comparable scope and quality.


A. Conform to Regulatory Requirements specified by Section 014100.

B. Testing and Special Inspections: Conduct testing under provisions of Section 014523 and the General Structural Notes. 1. Conform to provisions of IBC Chapter 17, reference standards specified by ACI 318,

procedures specified by ACI 301. 2. Conduct during placement of concrete with specified 28 day strength greater than

2500 psi following procedures conforming to ASTM C31, ASTM C39, and ASTM C143, and as specified Section 014523.

1.10 MOCK-UPS

A. Before beginning work of this Section, provide in compliance with provisions of Section 014300.

B. Architectural Concrete Sandwich Panel: Mock-up concrete building walls exposed to view. 1. Provide remote panel, approximately 60 SF in area, illustrating exterior and interior

Architectural Concrete finish, joint treatment, and corners. 2. Retain approved Mock-up as an example of quality of finished work of this section. 3. Mock-up will not be incorporated into finished work of this section.



B. Attendance: Contractor, Installer, Owner, Architect, Structural Engineer, manufacturer’s representative, batch plant representative, and those requested to attend.

C. Meeting Time: Minimum 3 weeks prior to beginning work of this Section and work of related Sections affecting work of this Section.


E. Review procedures for conducting work of this Section, including mock-up schedule; mix design additives; conditions for acceptance of concrete at project site; placement procedures; finishing options and procedures; curing and crack control procedures; testing for acceptable moisture emissions, and effect of the above on project schedule.



B. Mixing and Delivery: Conform to ASTM C94.





C. Sampling at Delivery: Conform to ASTM C172. Cure 4 inch by 8 inch cylinders to provisions of ASTM C31 and compression test compressive strength of cylinders to ASTM C39 and as specified Section 014523.

D. Batch Tickets: Conform to ASTM C94 Option A or C. Accompany with each load, fully executed, and signed. Log in with inspector at time of entry. Conform to Source Quality Control requirements specified by this Section. 1. Include water content and water withheld at batch plant. 2. Indicate time to nearest minute that batch was dispatched from plant, when it arrived

at site, and when unloading began and was finished. 3. Indicate ambient air temperature and concrete internal temperature of at time of

arrival. 4. Make written record of water and other additives added to design mix following time

that mix truck has left batch plant.

E. Reject concrete that has reached internal temperature of 89 degree F or above and when temperature has risen 5 degrees in 10 minutes, indicating that concrete is setting up prior to discharge.

F. Store products in accordance to ACI 301. Do not use admixtures that have been in storage at project site for more than 6 months or which have subject to freezing, except as accepted by Architect and Structural Engineer based on test results.


A. Environmental Conditions: Conform to ACI 301, 5.3.2 for placement of concrete weather considerations.

B. Protect concrete during falling rain, sleet, or snow.

1.14 COORDINATION


PART 2 PRODUCTS

2.1 MANUFACTURERS – ADMIXTURES, AGENTS, AND COMPOUNDS

A. BASF Construction Chemicals LLC 1. (253) 208-1570, Fax (253) 756-5025, Email [email protected] (Scott Di Loreto) 2. Website: www.basf.com/usa

B. ChemRex, Sonneborn 1. Website http://www.chemrex.com .

C. Curecrete Distribution, Inc. 1. Tel (425) 485-8373, Fax (425) 485-7852, Cell (206) 498-4075, Email

[email protected] (Ron Ogden Associates, Inc, Ron Ogden). 2. Website http://www.ashfordformula.com

D. Dayton Superior 1. (888) 977-9600





2. Email: [email protected]

E. Euclid Chemical Co. 1. Cell (253) 670-1510, Tel (253) 946-2436, Fax (253) 941-2635, Email

[email protected] (R.W. Simmons & Associates, Inc., Bob Simmons, FCSI, CCPR).

2. Website http://www.euclidchemical.com

F. Forta Corporation 1. Cell (206) 786-3591, Tel (360) 650-9038, Fax (360) 733-4788, Email

[email protected] (Marlen Hansen, Mfrs Rep). 2. Website http://www.comarltd.com / http://www.fortacorp.com

G. Grace Construction Products 1. Cell (206) 979-0745, Tel (800) 852-6055 Ext 1168, Fax (425) 844-2644, Email

[email protected] (Dave Lawton) 2. Website http://www.na.graceconstruction.com

H. Kryton International Inc. 1. Cell (206) 786-3591, Tel (360) 650-9038, Fax (360) 733-4788, Email

[email protected] (Marlen Hansen, Mfrs Rep). 2. Website http://www.comarltd.com / http://www.kryton.com

I. Propex Concrete Systems 1. Tel (425) 746-0900, Fax 425-746-8225, Cell (425) 484-1745, Email:

[email protected] (Mike Schroeder). 2. Website http://www.fibermesh.com

J. WR Meadows 1. Tel (206) 282-9759, Cell (206) 484-8236, Email [email protected] (Norcoe, Inc, Jim

Sullivan, Mfrs Rep). 2. Website http://www.wrmeadows.com.

K. Substitution Requests to Specified Products: Comply with provisions of Section 012500.

2.2 MANUFACTURERS – PRE-FORMED INSULATION AND COMPOSITE FORM TIES AND SPACERS

A. Composite Technologies Corporation, THERMOMASS Building System 1. Tel (800) 232-1748. Fax (515)-433-6088 2. Website: www.thermomass.com

B. Substitution Requests to Specified Products: Comply with provisions of Section 012500.

2.3 MATERIALS

A. Portland Cement: ASTM C150, gray color. 1. Interior: Type I. 2. Exterior: Type I with specified air entrainment admixture, preferred to Type IA and

Type IIA air-entrained concrete. Type IIIA accepted for cold weather construction.

B. Aggregates:





1. Aggregate Grading and Quality as appropriate for self-consolidating concrete mix design: ASTM C33.

2. Coarse Aggregate Class Designation: As indicated by Table 3 for Type or Location of concrete for Moderate Weathering Region, including 5M for exterior Architectural Concrete.

3. Size: Do not exceed 3/4 distance between reinforcing steel or 1/3 thickness of concrete slabs. a. Maximum 1/2 inch aggregate.

4. Free of deleterious substances that may cause expansion of concrete or react with alkalis in concrete.

C. Fly Ash: ASTM C618, Class F or Class C Pozzolan, loss on ignition not exceeding 3 percent at concrete with entrained air.

D. Sand: Washed, ASTM C33.

E. Mix Water: Conform and test to ASTM C1602. 1. Recycled mix water conforming to and tested to ASTM C1603 for maximum permitted

solids of 50,000 parts per million, or 5 percent, of total mix water. a. Wash water from mixer washout or as part of a concrete mix. b. Water collected in a basin as a result of storm water runoff at a concrete

production facility. Site water, water from truck exterior, and undocumented water is not permitted to enter containment system.

2. Clean water free from acids, alkalis, organic material, minerals, salts, and other deleterious materials. Seawater not accepted.

F. Cementitious Materials: Use fly ash, pozzolan, ground granulated blast-furnace slag, and silica fume as needed to reduce the total amount of portland cement, which would otherwise be used, by not less than 40 percent. Limit percentage, by weight, of cementitious materials other than portland cement in concrete as follows: 1. Fly Ash: maximum 30 percent. 2. Combined Fly Ash and Pozzolan: 30 percent. 3. Ground Granulated Blast-Furnace Slag: 50 percent. 4. Combined Fly Ash or Pozzolan and Ground Granulated Blast-Furnace Slag: 50 percent

portland cement minimum, with fly ash or pozzolan not exceeding 25 percent.

G. Extruded Polystyrene: Pre-formed rigid board insulation 1. ASTM C-578 Type IV material 2. Compressive resistance: 25-psi minimum at yield or at 10 percent deformation per

ASTM D1621. 3. Flexural strength: 50.0-psi minimum 4. Water Absorption: 0.1 percent maximum by volume per ASTM C272. 5. Minimum Thickness: 2 in. board thickness or as approved by system manufacturer. 6. ISR R-Value: 5.0°F•ft2•h/Btu per inch at 75° F minimum per ASTM C518. Warranted

R-Value to retain minimum of 90 percent of its published R-value for 15 years. 7. Manufactured with a blowing agent that provides at least a 90 percent reduction in

potential for ozone depletion as compared to standard CFC blowing agents 8. Supplied with heat-formed holes to identify connector placements at designated

spacings through insulation sheet surfaces.

H. Fiber-composite connectors: Alkali resistant, notched, fiber-composite connectors developed and supplied for concrete sandwich wall construction.





1. Non-conductive, non-corrosive vinyl-ester resin 2. Tensile strength: ASTM D3039, 120,000 psi 3. Minimum glass content: 76 percent by weight 4. Coefficient of thermal expansion: 5x10-6in/in/°F, nominal.

2.4 ADMIXTURES, AGENTS, AND COMPOUNDS

A. Admixtures - General: 1. Provide products from single manufacturer, or supply manufacturer certification that

admixtures are compatible in combination with cement and aggregates. 2. Free of calcium chloride and thiocyanate. Containing no more than 0.05 percent

chloride ions.

B. Air-Entraining Agent: ASTM C260 for exterior concrete. 1. BASF Micro-Air or AE 90 2. Euclid, Air Mix 3. Grace, Daravair 1000 4. Sika, AEA-15

C. Self-Consolidating Concrete (SCC) Polycarboxolate based superplasticiser designed to consolidate concrete without need for vibrating. 1. BASF, Rheodynamic Self-Consolidating Concrete 2. Grace Construction Products, ADVA Cast 530, or other ADVA Series as instructed by

manufacturer.

D. Shrinkage Reducing Admixture (SRA): Add at one gallon per cubic yard of concrete for mix designs conforming to accepted test data for linear shrinkage and as instructed by manufacturer. 1. BASF, Tetraguard AS20 2. Grace, Eclipse Plus and Eclipse Floor

E. Integral Water-Repellent Admixture: Non-chloride formula system of hydrophobic components and surface active agents, making pores and pore linings resistant to water absorption and capillary action, inhibiting water intrusion and vapor transmission through hardened concrete, tested ASTM C642. 1. BASF Rheomix 235 2. Grace, Darapel 3. Euclid, Integral Waterpeller

2.5 CURE AND SEAL COMPOUNDS

A. Liquid Membrane Forming Curing Compounds: Not accepted except in writing by Architect under special conditions in lieu of water curing methods.

2.6 MONOMOLECULAR SURFACE EVAPORATION RETARDER

A. Odorless, spray applied, water-based liquid polymer, forming monomolecular film on plastic concrete, evaporating and dissipating as concrete hardens. 1. BASF, Confilm 2. Dayton Superior, SureFilm J-74 3. Edoco Burke Film RTU 4. L & M Construction Chemicals, E-Con





5. US MIX, US SPEC Monofilm ER 6. WR Meadows, EVAPRE

B. Spray over newly placed concrete before and during concrete finishing in at least three separate operations.

2.7 JOINT FILLERS AND SEALERS

A. Interior Joint Sealant: Industrial quality, two component, semi-rigid epoxy or polyurea, USDA approved, ASTM D2240, minimum Shore A 75-85, matching approximate color of natural concrete finish. Specified for type and quality: 1. Polyurea Sealant:

a. Dayton Superior, Joint Fill. b. Edoco Burke, JointFill. c. L&M Construction Chemicals, Joint Tite 750 d. VersaFlex, SL/75

B. Joint Sealant and backer rod: As specified Section 079200.

2.8 BONDING AGENTS

A. Bonding Agents: ASTM C1059 Type II and ASTM C1042 Type II acrylic emulsion designed to permanently bond new concrete and Portland cement sand mixes to horizontal and vertical in-place concrete at interior and exterior conditions or an approved substitution with equal or greater load capacities given in an ICC Report. 1. Dayton, Day-Chem Ad Bond (J-40) 2. Edoco Burke, Acrylic Bondcrete 3. Euclid, Flex-Con 4. Grace, Daraweld C 5. Larsen Products Corp., Weldcrete 6. L&M Construction Chemicals, Inc, Everbond 7. Vexcon, Envirostong 8. US MIX, US SPEC Acrylcoat

2.9 FINISHES

A. Verify conformance to final finishes based on Architect accepted mock-ups specified this Section.

B. Plywood Formed Concrete as specified in Section 031100.

2.10 SOURCE QUALITY CONTROL

A. Conform to provisions and limitations ACI 340R and ASTM C94.

B. Batching and Mixing: Conform to ASTM C94, Option A for exact proportioning of mix design.

C. Admixtures: Add to within accuracy of 3 percent. 1. Add separately and verify compatibility in design mix, conforming to manufacturer’s

instructions. 2. Reject concrete that shows signs of segregation due to use of admixtures.





D. Elapsed Time From Start of Batching at Plant to Discharge at Project Site: Conform to following except where set-reducing admixtures are added by batch plant for hauls requiring longer time periods 1. Maximum 90 minutes and maximum 300 revolutions, whichever comes first after

introducing mix water. 2. Air Temperatures:

a. Reduce mixing and delivery time to maximum 75 minutes for between 85 degrees F and 90 degrees F.

b. Reduce mixing and delivery time to 60 minutes for temperature above 90 Degrees F.

c. Monitor concrete in truck and reject if temperature rises to 89 degrees or 5 degrees F in 10 minutes, indicating that concrete is setting up prior to discharge.

E. Mix Water: When feasible, add mix water required for mix design at batch plant.

F. Accelerating and Set Retarding Admixtures: 1. Accepted for long hauls for extending transportation time, cold weather, and hot

weather conditions conforming to hot and cold weather placement requirements. 2. Measure concrete temperature and confirm that temperature has not exceeded 89

degrees F or 5 degrees F in 10 minutes before acceptance at site.

G. Batching of Dry Materials and Adding Mix Water at Site: 1. Accepted for long hauls and for extending transportation time as an alternate

procedure to adding accelerating and set retarding admixtures. 2. Add mix water under pressure at both front and back of mixing drum. 3. Mix at mixing speed for 70 to 100 revolutions before discharging.

H. Adding Mix Water at Project Site: 1. Do not add water to batch plant mix design except as prescribed by batch plant mix

designer's written instructions. 2. Add mix water only when Special Inspector is present. 3. Truck drivers and others are not authorized to add water, except under direct

supervision of batch plant quality control representative present at project site. 4. Accurately meter mix water to exact quantity sufficient to reach slump specified by

batch plant mix design. Do not exceed specified slump. 5. Do not exceed design water/cement ratio. 6. Make written record of water added to design mix and submit to Special Inspector at

project site.

I. Do not use calcium chloride containing products.

PART 3 EXECUTION

3.1 EXAMINATION

A. Verify installation conditions as satisfactory to receive work of this Section before beginning.

B. Verify that anchors, seats, plates, reinforcement, and other items cast into concrete are accurately located and are securely in place.





3.2 PREPARATION

A. Protect Surrounding Areas: Preclude damage from work of this Section.

B. Protect adjacent finishes for a minimum of 14 days after placing concrete.

C. Formwork, Reinforcing, and Embedded Items: In place, and approved before placement of concrete.

3.3 CONCRETE PLACEMENT

A. Provide self-consolidating concrete (SCC). 1. Design watertight formwork and closure gates to contain complete liquid head. 2. Pump concrete from bottom to full height of formwork using self-consolidating

concrete to eliminate pour lines and construction joints.

B. Conform to IBC Chapter 19, ACI 301, ACI 304R, ACI 304.2R, and provisions of Contract Documents.

C. Convey concrete using clean equipment of type and size needed for continuous concrete flow without loss of consolidation and separation of ingredients. 1. Do not use aluminum pipe for pumping concrete. 2. Do not place concrete pumping slurry in forms.

D. Place monolithically and deposit concrete as close to final position as practical.

E. Place concrete not to disturb in-place items such as reinforcement, inserts, embedded parts, formed expansion/contraction (control) joints, vapor retarder, and formwork.

F. Place Concrete continuously.

G. Strike unformed surfaces at top of walls and horizontal offsets smooth after concrete is placed and finish consistent with adjacent formed surfaces.

H. Do not place concrete on ice, snow, frost, or frozen substrates including subgrades, formwork, reinforcement, and embedded items.

3.4 CURING CONCRETE WALLS

A. Conform to ACI 308 and ACI 301 Section 5.3.6.

B. Cure concrete for minimum 7 days, maintaining concrete surface temperature of not less than 50 degrees F, and as accepted by Architect and Structural Engineer for high early strength concrete.

C. At temperatures below 40 degrees F during first 7 days after placement, protect concrete from freezing in accordance to ACI 306.1

D. Water cure to maintain minimal moisture loss, until concrete has reached 70 percent of average compressive strength (f=c).

E. Temporary Insulation:





1. Accepted to retain heat in newly placed concrete. 2. Conform to ACI 306R and ACI 306.1 for type and amount satisfactory for given

conditions. 3. Protect corners and edges of concrete placement.

F. In severe weather, at end of 7 days, gradually decrease temperature to ambient over 24 hour period.

G. Use of Heaters: 1. Do not use propane or other moisture and carbon-dioxide producing heaters 2. Maintain uniform temperature throughout heated areas. 3. Prevent rapid drying of new concrete.

3.5 JOINT SEALANTS

A. Exterior Joints: 1. Install joint sealers and backer rod specified Section 079200 at joints separated by

joint filler. 2. Tool to concave configuration, flush to surface.

3.6 TOLERANCES

A. General Tolerances: Conform to ACI 117 and ACI 302.1R for tolerances of construction and materials.

B. Vertical, Lateral, and Relative Alignment and Cross Sectional Dimensions: Conform to ACI 117 and as specified for offset between adjacent formwork facing material.

3.7 REPAIR AND FINISHING FORMED SURFACES

A. Formwork Surfaces: Refer to provision specified by Section 031100.

B. Finishing Exposed Surfaces: Conform to ACI 301 for Architectural Concrete at exposed concrete. 1. Knock fins off and patch imperfections for a smooth surface to match adjacent

surfaces in appearance. 2. Rub rough surfaces with carborundum stone as instructed by Architect and Structural

Engineer. 3. Leave surfaces clean and smooth.

C. Sacking: 1. Patch spalls, and other surface voids and blemishes at exposed to view concrete not

conforming ACI 301 for Architectural Concrete while concrete is still green. 2. Where sacking does not meet acceptable standards, paint wall under provisions of

Section 099000, as instructed by Architect at no additional cost to Contract Sum and Contract Time.


A. Testing and Special Inspections: Conform to requirements specified Section 014523.





3.9 ADJUSTING

A. Correct defective work not conforming to specified tolerances and referenced ACI Standards

B. Correct as necessary for smooth finished surface.

3.10 CLEANING

A. Clean concrete in accordance with ASTM D4258.

3.11 PROTECTION

A. Protect in-place concrete in accordance with ACI 301, Section 1.8.

B. Use plywood or OSB cover board over concrete subject to damage.

END OF SECTION


SECTION 033550POLISHED CONCRETE FLOOR FINISH


SECTION 033550 POLISHED CONCRETE FLOOR FINISH

PART 1 GENERAL

1.1 SUMMARY

A. Section Includes: Ground, clear sealed, hardened, and polished concrete floor finish (Conc-2) included as Alternate No. 4 – Polished Concrete Floor

B. Related Sections: 1. Section 012300 - Alternates 2. Section 033000 - Cast-In-Place Concrete

1.2 REFERENCES

A. Reference Standards: Current edition at date of Bid.

B. American Society for Testing and Materials (ASTM) International: 1. ASTM C171 - Sheet Materials for Curing Concrete. 2. ASTM C779 - Standard Test Method for Abrasion Resistance of Horizontal

Concrete Surfaces. 3. ASTM C805 - Standard Test Method for Rebound Number of Hardened

Concrete. 4. ASTM C1315 - Standard Specification for Liquid Membrane-Forming

Compounds Having Special Properties for Curing and Sealing Concrete

5. ASTM C1028 - Standard Test Method for Determining the Static Coefficient of Friction of Ceramic Tile and Other Like Surfaces by the Horizontal Dynamometer Pull-Meter Method

6. ASTM D523 - Standard Test Method for Specular Gloss.

1.3 SUBMITTALS


B. Shop Drawings: Plan layout showing extent of work and special patterns and extent of colors.

C. Product Data: Published literature describing each component of system.

D. Test Data: Certified by independent testing laboratories confirming conformance to specified performance criteria.

E. Samples: Provide 8 inch square sample of clear finish.

F. Manufacturer's Instructions: Application instruction, special procedures, and conditions requiring special attention,

G. Certificate: Written certification, signed by manufacturer’s representative, stating that applicator is trained and qualified to perform work of this Section using manufacturer’s products.




H. Sample Warranty: Meet or exceed provisions specified by this Section.

1.4 CLOSEOUT SUBMITTALS

A. Conform to provisions of Section 017700.

B. Maintenance Instructions: Include instructions for maintaining flooring

1.5 QUALIFICATIONS

A. Ground, Polished Concrete Applicator: 1. Artisan specializing in application of ground and polished concrete flooring systems

comparable in type, scope, and quality as specified by this Section. 2. Able to document minimum 5 years experience with minimum 5 successful

commercial quality concrete floor finishing projects comparable to work specified for this project.

3. Certified by manufacturer’s representative as qualified to perform work of this Section, prior to Bid date, and accepted by Architect.

1.6 PERFORMANCE REQUIREMENTS

A. Static Coefficient of Friction: Provide flooring materials with the following values as determined by testing according to ASTM C1028: 1. All Surfaces: Minimum 0.8.

1.7 MOCK-UPS

A. Provide under provisions of Section 014300.

B. Complete Mock-up one month prior to work of this Section.

C. Provide full size mock-up slab in accordance with Section 033000, as indicated and directed by Architect.

D. Apply mock-up of floor finish system as specified by this Section.

E. Maintain approved mock-up as standard for work of this Section.

F. Use specular gloss meter as required to verify accepted gloss level.



B. Attendance: Contractor, concrete subcontractor, Owner, Architect, artisan/installer, manufacturer’s representative, and those requested to attend.

C. Meeting Time: Minimum 3 weeks prior to prior to beginning work of this Section and work of related Sections affecting work of this Section.







B. Deliver products packaged in manufacturer’s packaged and sealed containers with manufacturer’s identifying labels intact.

C. Do not use liquid based staining products which have been subjected to freezing.


A. Ambient Temperature: Conform to manufacturer’s instructions.

B. Concrete Slab: 1. Water-cure, using curing film as specified Section 033000, for minimum 7 days. 2. Do not apply curing compounds to concrete floors except as instructed by

manufacturer as part of work of this Section. 3. Cure slab minimum 28 days, or as instructed by manufacturer, before beginning work

of this Section. 4. Finish concrete floor slabs to Flatness of minimum FF 40, as specified Section 033000.

1.11 COORDINATION

A. Conform to Section 013113 and for coordination with work of other Sections.

B. Phase in and schedule work of this Section with concrete work of Section 033000. Coordinate troweling of concrete finish and curing of concrete slab with work of Section 033000 for best results. 1. Do not permit use of curing compounds on slabs receiving work of this Section. 2. Do not permit use of fiber reinforcing in slabs receiving work of this Section.

1.12 WARRANTY

A. Conform to Warranty provisions specified Section 017836.

B. Manufacturer: Standard 20 year Warranty that treated floor slab will remain water-repellant, dust proof, hardened, and abrasion-resistant.

PART 2 PRODUCTS

2.1 MANUFACTURERS

A. Advanced Floor Products, Inc. 1. Tel (425) 485-8373, Fax (425) 485-7852, Cell (206) 498-4075, Email

[email protected] (Ron Ogden CSI, R. J. Ogden Associates, Inc). 2. Website http://www.retroplatesystem.com/

B. Vexcon Chemicals 1. Tel (888) 839-2661, Cell (215) 901-5155, Email [email protected] (Darryl Manuel,

President- Wrote ASTM C 1315) 2. Website: www.vexcon.com Website http://www.vexcon.com/Certi-Shine




C. L&M Construction Chemicals 1. Tel (425) 562-6076, Fax (425) 562-6149, Cell (425) 785-3242, Email

[email protected] (Bill Pavitt CSI, Rep) 2. Website: www.lmcc.com

D. L. M. Scofield Company 1. Voice Mail (800) 800-9900 Ext 5230, Direct Line (253) 318-7384, Email

[email protected] (Lee Jenkerson) 2. Website http://www.scofield.com

E. ProSoCo, Inc. 1. Cell (206) 384-8057, Tel (425) 235-7216, Fax 888-434-7091, Email

[email protected] (Gene Bollinger). 2. Website: http://www.prosoco.com

F. QC Construction Products 1. Website http://www.qcconprod.com

G. American Decorative Concrete, Ameripolish 1. Tel (800) 592-9320, (479) 725-0033, Fax (479) 725-0031, [email protected] 2. Tel 619-201-5987, Email [email protected] (Skip Edwards – Western Region) 3. Website: www.ameripolish.com

H. Substitution Requests: Conform to provisions of Section 012500.

2.2 PRODUCTS

A. Hardener/Sealing Agents, USDA approved: 1. L&M Chemical, Permashine 2. PROSOCO, Consolideck LS (Lithium Silicate)

B. Substitution Requests: Conform to provisions of Section 012500.

2.3 MATERIALS

A. Hardener/Sealing Agent: 1. Abrasion Resistance: Up to 400 percent increase, tested to ASTM C779. 2. Impact Strength: Up to 21 percent increase, tested to ASTM C805. 3. Ultra Violet Light and Water Spray: No affect.

2.4 ACCESSORIES

A. Neutralizing Agent: Tri-sodium phosphate or baking soda.

B. Water: Clear and potable.

C. Kraft Curing Paper: ASTM C171, Type 1.1.1, non-staining, moisture retentive.

D. Joint Sealers: Polyurea with a hardening agent as specified in Section 033000.




2.5 FINISHES

A. Color: Natural concrete.

B. Sheen: Polish with the following grit grinders. 1. Satin: 800 grit, or as necessary to achieve specified slip resistance.

PART 3 EXECUTION

3.1 ARTISAN/INSTALLER

A. Diacon Concrete Polishing System 1. Tel (877) 673-6063 #709, Cell (206) 396-1879, E-mail [email protected] (Rob

Defaia) 2. Website: http://www.diaconcrete.com

B. Sustainable Floor Solutions (Formerly Northwest Stone Restoration) 1. Tel (360) 903-9439, Fax (425) 644-2103, Email [email protected]

(Andy Loe) [email protected] (David Loe and Joan Loe). 2. Website http://www.nwstonerestoration.com

C. Harvey Construction 1. Tel (360) 668-2218, Fax (360) 668-7727, Cell (206) 595-1932, Email:

[email protected] (Jim Harvey, Owner & Installation).

D. Substitution Requests: Conform to provisions of Section 012500.

3.2 EXAMINATION

A. Verify conditions as satisfactory to receive work of this Section.

B. Verify that concrete surface is clean, smooth, and flat conforming to specified floor tolerances specified by Section 033000.

C. Verify surface free of chemicals, acids, curing compounds and other substances that may inhibit quality of chemical staining.

D. Verify conditions ready to receive work of this Section before beginning. Conform to manufacturer's instructions and provisions of Contract Documents. Bring conflicts and omissions in Contract Documents promptly to Architect’s attention for interpretation and direction.

E. Verify that the concrete has cured for a minimum of 28 days. Do not start grinding procedures before this time unless approved in writing by the Architect.

3.3 PREPARATION

A. Cover to protect surfaces not to receive treatment. Take measures to prevent overspray from staining surfaces not designated for chemical staining.

B. Clean concrete surfaces to remove dirt, form oil, plaster, stains, oil, grease, adhesives, water repellants, compounds, and other substances that may deter penetration.




3.4 INSTALLATION

A. Conform to manufacturer's instructions and provisions of Contract Documents to achieve appearance as accepted by mock-ups

3.5 GRINDING AND POLISHING

A. Bring floor to flatness, specified in Section 033000, and smoothness using metal bonded diamond grinding equipment.

B. Bring floor to levelness of FL 30 (1/8” in 10’), flatness of FF 40, and smoothness using metal bonded diamond grinding equipment.

C. Grind to expose aggregate.

D. Cross grind at 90 degree angles to achieve uniform scratch patterns at each grinding grit level.

E. Grind using subsequent finer grits until floor is scratch pattern free.

F. Polish floor using diamond polishing equipment to achieve uniform final finish.

3.6 INSTALLATION OF HARDENER/SEALER

A. Apply hardener/sealer as required to seal and densify concrete surface without changing color of concrete surface except for sheen.


A. Manufacturer’s Representative: 1. Attend pre-installation meeting. 2. Perform initial inspection and subsequent inspections during and at completion of

work to verify conformance with manufacturer’s instructions. 3. Make recommendations for remedial action where non-conforming work is discovered.

3.8 ADJUSTING

A. Repair, replace, or make restitution for overspray damage to surfaces damaged by work of this Section, as instructed by Architect.

B. Touch-up concrete prior to Substantial Completion of Project. Repair scratches, and other surface damage to show no evidence of repair.

3.9 CLEANING

A. Leave area clean, free from spillage, overspray, tracking, and other residue resulting from work of this Section.

3.10 PROTECTION

A. Do not lay non-breathable films, membranes, or covers over finished floor.




B. Lay Kraft paper over finished floor. Tape the overlap. Do not tae the floor.

C. Protect from standing water for 30 days.

D. Protect from pedestrian traffic and rolling loads for minimum 7 days following work of this Section.

END OF SECTION