marshfield spillway improvements gatehouse and …

GREEN MOUNTAIN POWER CORP.

COLCHESTER, VT

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MARSHFIELD SPILLWAY IMPROVEMENTS

GATEHOUSE AND HEAD GATE

REFURBISHMENTS

STATE MAP

V E R M O N T

MONTPELIER

LOCATIONPROJECT

VICINITY MAP

RELEASED FOR CONSTRUCTION 1-30-18

DATE REVISIONSHEET DESCRIPTIONSHEET NO.

DRAWING LIST

1-30-18G-01 GENERAL PROJECT NOTES

STATUS

EXISTING INTAKE PLAN AND PROFILE

NEW GATEHOUSE ACCESS PLATFORM SECTIONS AND DETAILS

0 RELEASED FOR CONSTRUCTION

NEW GATEHOUSE ACCESS PLATFORM

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GATEHOUSE PLAN AND SECTION

EXISTING HEADGATE DETAILS AND REPAIR NOTES

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MARSHFIELD SPILLWAY

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GATEHOUSE REMOVABLE ROOF

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NEW HAMPSHIRE

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NEW YORK

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MASSACHUSETTS

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C A N A D A

ggrundhauser

Text Box

Exhibit GMP-AH-6

012-170 01-30-18

GREEN MOUNTAIN POWER CORPORATION

COLCHESTER, VT.

G-01

1-30-18 ZJARELEASED FOR CONSTRUCTION0

©

Project No. Date Revised

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Drawing

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KleinschmidtGroup.com

Jan. 30, 2018 - 5:45 P

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NOT FOR CONSTRUCTION


GATE HOUSE AND HEAD GATE REFURBISHMENTS

GENERAL

PROJECT NOTES

GENERAL STEEL NOTES

CONCRETE NOTES

GENERAL NOTES

” ” ”” ”

TOP VIEW

JOINING SECTIONS

SILT FENCE DETAIL

N.T.S.

TOE-IN DETAIL

EROSION & SEDIMENT CONTROL NOTES

SCOPE OF WORK

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2017 KLEINSCHMIDT GROUP.

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THIS DOCUMENT IS A DRAFT VERSION PROVIDED FOR THE CONVENIENCE OF THE USER AND IS NOT AN INSTRUMENT OF SERVICE OF KLEINSCHMIDT GROUP UNLESS IT BEARS THE PROFESSIONAL ENGINEER'S STAMP AND ORIGINAL SIGNATURE. THIS DOCUMENT IS NOT A PRODUCT, AND TRANSFER OF A VERSION OF AN INSTRUMENT OF SERVICE BY ELECTRONIC MEDIA IS NOT DEEMED A SALE. THIS DOCUMENT MAY NOT BE ALTERED BY OTHERS OR USED FOR PROJECTS OR PURPOSES OTHER THAN THE PROJECT FOR WHICH IT WAS PREPARED, WITHOUT THE EXPRESS WRITTEN PERMISSION OF KLEINSCHMIDT GROUP.

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1. ELEVATIONS ARE BASED ON EXISTING REFERENCE DRAWINGS AND SURVEY INFORMATION GATHERED BY GRENIER ELEVATIONS ARE BASED ON EXISTING REFERENCE DRAWINGS AND SURVEY INFORMATION GATHERED BY GRENIER ENGINEERING PO BOX 445, WATERBURY, VERMONT. PHONE: (802) 244-6413. SURVEY PERFORMED ON DEC. 5, 2016. 2. THESE ARE STANDARD NOTES APPLYING TO ALL WORK. SPECIFIC NOTES SHOWN ON OTHER DRAWINGS OR THESE ARE STANDARD NOTES APPLYING TO ALL WORK. SPECIFIC NOTES SHOWN ON OTHER DRAWINGS OR STATED IN THE TECHNICAL SPECIFICATIONS WILL TAKE PRECEDENCE. 3. CONTRACTOR SHALL SCHEDULE WORK IN COOPERATION WITH THE OWNER. CONTRACTOR SHALL SCHEDULE WORK IN COOPERATION WITH THE OWNER. 4. DETERMINE LOCATIONS, EXISTING CONDITIONS AND DIMENSIONS BY VISITING THE SITE. VERIFY ALL DETERMINE LOCATIONS, EXISTING CONDITIONS AND DIMENSIONS BY VISITING THE SITE. VERIFY ALL DIMENSIONS IN THE FIELD BEFORE ORDERING OR FABRICATING MATERIAL. WHERE DIMENSIONS ARE NOT SHOWN, CONTACT ENGINEER FOR CLARIFICATION. 5. INFORMATION SHOWN ON THESE DRAWINGS IS BASED ON THE ORIGINAL CONSTRUCTION DRAWINGS AND INFORMATION SHOWN ON THESE DRAWINGS IS BASED ON THE ORIGINAL CONSTRUCTION DRAWINGS AND LIMITED FIELD MEASUREMENTS. WHERE DIMENSIONS ARE NOT SHOWN, CONTACT ENGINEER FOR CLARIFICATION. VERIFY DIMENSIONS PRIOR TO START OF WORK. 6. DEMOLITION: DEMOLITION: A. REMOVE EXISTING STRUCTURE TO EXTENT SHOWN ON THE DRAWINGS. DO NOT DAMAGE REMAINING REMOVE EXISTING STRUCTURE TO EXTENT SHOWN ON THE DRAWINGS. DO NOT DAMAGE REMAINING STRUCTURE. B. REMOVE ALL UNSOUND CONCRETE AND LOOSE ROCK IN THE AREAS NOTED ON THE DRAWINGS. THE REMOVE ALL UNSOUND CONCRETE AND LOOSE ROCK IN THE AREAS NOTED ON THE DRAWINGS. THE OWNER SHALL EXAMINE THESE AREAS BEFORE NEW CONCRETE IS PLACED. C. SHORE AND SUPPORT EXISTING CONSTRUCTION, WHICH IS NOT REMOVED, AS REQUIRED. SHORE AND SUPPORT EXISTING CONSTRUCTION, WHICH IS NOT REMOVED, AS REQUIRED. 7. THE STRUCTURES HAVE BEEN DESIGNED TO BE SELF SUPPORTING IN THE FINAL CONDITION AS SHOWN IN THE STRUCTURES HAVE BEEN DESIGNED TO BE SELF SUPPORTING IN THE FINAL CONDITION AS SHOWN IN THE CONTRACT DOCUMENTS. IT IS THE CONTRACTOR'S RESPONSIBILITY TO DETERMINE CONSTRUCTION PROCEDURES AND SEQUENCES TO ENSURE STABILITY AND SAFETY DURING ALL ASPECTS OF CONSTRUCTION. THIS INCLUDES, BUT IS NOT LIMITED TO, EXCAVATION, DEMOLITION AND ERECTION AND MAY INVOLVE THE ADDITION OF SHEETING, SHORING, TEMPORARY BRACING, GUYS, TIE DOWNS, AND/OR ADDITIONAL ROCK STABILIZING ANCHORS. ANY ADDITIONAL MATERIALS OR WORK NEEDED TO ENSURE STABILITY AND SAFETY DURING CONSTRUCTION BUT NOT REQUIRED IN THE FINAL CONDITIONS SHALL BE PROVIDED AT NO ADDITIONAL COST TO THE OWNER.

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1. CONTRACTOR SHALL SUBMIT STRUCTURAL STEEL AND GRATING SHOP DRAWINGS FOR OWNER REVIEW PRIOR CONTRACTOR SHALL SUBMIT STRUCTURAL STEEL AND GRATING SHOP DRAWINGS FOR OWNER REVIEW PRIOR TO FABRICATION AND INSTALLATION. 2. STRUCTURAL STEEL DESIGN STANDARD - AISC SPECIFICATION FOR DESIGN AND ERECTION OF STRUCTURAL STRUCTURAL STEEL DESIGN STANDARD - AISC SPECIFICATION FOR DESIGN AND ERECTION OF STRUCTURAL STEEL FOR BUILDINGS, 14th EDITION. 14th EDITION. th EDITION. A. FABRICATOR SHALL DESIGN NEW STEEL TO NEW STEEL CONNECTIONS FOR BEAMS USING AISC FABRICATOR SHALL DESIGN NEW STEEL TO NEW STEEL CONNECTIONS FOR BEAMS USING AISC STANDARD FRAMED BEAM CONNECTIONS. DESIGN FOR END REACTION SHOWN ON FRAMING PLAN. IF REACTIONS ARE NOT PROVIDED, DESIGN FOR MAXIMUM UNIFORM END REACTION OR 10 KIPS, 10 KIPS, KIPS, WHICHEVER IS GREATER. ALL THE END REACTIONS SHOWN ON THE DRAWINGS ARE FACTORED IN ACCORDANCE WITH THE AISC 14TH EDITION. 14TH EDITION. TH EDITION. B. CONNECTIONS SHALL BE SHOP WELDED AND FIELD BOLTED UNLESS NOTED OTHERWISE. CONNECTIONS SHALL BE SHOP WELDED AND FIELD BOLTED UNLESS NOTED OTHERWISE. C. BOLTED CONNECTIONS SHALL HAVE A MINIMUM OF 2 BOLTS. MINIMUM BOLT SIZE 3/4" DIA. UNLESS BOLTED CONNECTIONS SHALL HAVE A MINIMUM OF 2 BOLTS. MINIMUM BOLT SIZE 3/4" DIA. UNLESS 2 BOLTS. MINIMUM BOLT SIZE 3/4" DIA. UNLESS BOLTS. MINIMUM BOLT SIZE 3/4" DIA. UNLESS 3/4" DIA. UNLESS " DIA. UNLESS NOTED OTHERWISE. 3. MATERIAL PROPERTIES: MATERIAL PROPERTIES: A. STEEL BARS, PLATES, ANGLES AND CHANNELS AND OTHER SHAPES UNLESS NOTED OTHERWISE - STEEL BARS, PLATES, ANGLES AND CHANNELS AND OTHER SHAPES UNLESS NOTED OTHERWISE - ASTM A36. B. STRUCTURAL STEEL W SHAPES - ASTM A992. STRUCTURAL STEEL W SHAPES - ASTM A992. C. BOLTS - 3/4" ASTM A325 GALV. ALL CONNECTIONS OF STRUCTURAL MEMBERS. BOLTS - 3/4" ASTM A325 GALV. ALL CONNECTIONS OF STRUCTURAL MEMBERS. 3/4" ASTM A325 GALV. ALL CONNECTIONS OF STRUCTURAL MEMBERS. " ASTM A325 GALV. ALL CONNECTIONS OF STRUCTURAL MEMBERS. D. ANCHOR ROD - HIT-V ASTM A307 GRADE A THREADED ROD HOT-DIPPED GALVANIZED. ANCHOR ROD - HIT-V ASTM A307 GRADE A THREADED ROD HOT-DIPPED GALVANIZED. E. PIPING - ASTM A53, GRADE B. PIPING - ASTM A53, GRADE B. F. STRUCTURAL TUBING - HSS RECTANGULAR - ASTM A500 GR 46; HSS ROUND ASTM A500 GRADE 42. STRUCTURAL TUBING - HSS RECTANGULAR - ASTM A500 GR 46; HSS ROUND ASTM A500 GRADE 42. G. WELD - PER AWS D1.1 MATCHING ELECTRODES TO STRENGTH OF BASE METALS. WELD - PER AWS D1.1 MATCHING ELECTRODES TO STRENGTH OF BASE METALS. 4. STEEL COATINGS: STEEL COATINGS: A. ALL STRUCTURAL MEMBERS SHALL BE GALVANIZED. ALL STRUCTURAL MEMBERS SHALL BE GALVANIZED. B. ALL TRASHRACK BAR PANELS ARE UNPAINTED, OTHERWISE ALL STEEL ITEMS ARE PAINTED, GALVANIZED, ALL TRASHRACK BAR PANELS ARE UNPAINTED, OTHERWISE ALL STEEL ITEMS ARE PAINTED, GALVANIZED, OR MADE WITH STAINLESS STEEL. C. ALL BOLTS AND HARDWARE SHALL BE HOT DIPPED GALVANIZED ASTM A153. ALL BOLTS AND HARDWARE SHALL BE HOT DIPPED GALVANIZED ASTM A153.

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1. SURFACE PREPARATION: SURFACE PREPARATION: A. ALL LOOSE ROCK, CONCRETE, AND SOIL SHALL BE REMOVED PRIOR TO CONSTRUCTION. REMOVE ANY ALL LOOSE ROCK, CONCRETE, AND SOIL SHALL BE REMOVED PRIOR TO CONSTRUCTION. REMOVE ANY GREASE, OIL OR OTHER COATINGS ON ANY EXISTING SURFACE. B. WHEN CONCRETE IS PLACED DIRECTLY AGAINST ROCK SURFACES, THE SURFACE SHALL BE CLEANED WITH WHEN CONCRETE IS PLACED DIRECTLY AGAINST ROCK SURFACES, THE SURFACE SHALL BE CLEANED WITH HIGH-PRESSURE WATER TO REMOVE ALL DIRT OR LOOSE MATERIAL. C. SURFACE PREPARATION OF EXISTING CONCRETE AND MASONRY SURFACES SHALL REMOVE ALL LOOSE OR SURFACE PREPARATION OF EXISTING CONCRETE AND MASONRY SURFACES SHALL REMOVE ALL LOOSE OR DETERIORATED MATERIAL AND VEGETATION. ACCEPTABLE METHODS INCLUDE SANDBLASTING, MECHANICAL CHIPPING, OR HIGH-PRESSURE WATER BLAST (6000 PSI MINIMUM PRESSURE). 6000 PSI MINIMUM PRESSURE). PSI MINIMUM PRESSURE). 2. CONCRETE: CONCRETE: A. ALL WORK SHALL CONFORM TO ACI 318, ACI 301 AND ACI 347, LATEST EDITIONS. ALL WORK SHALL CONFORM TO ACI 318, ACI 301 AND ACI 347, LATEST EDITIONS. B. SPECIFICATIONS: SPECIFICATIONS: I. MINIMUM 28 DAY STRENGTH = 4500 PSI. II. MAXIMUM WATER/CEMENT RATIO = 0.45. III. SLUMP 3" TO 4". IV. AIR CONTENT PROVIDED BY AIR ENTRAINMENT ADMIXTURE 6% AS MEASURED BY ASTM C231. V. WATER REDUCING ADMIXTURE SHALL BE USED AT THE OPTION OF THE CONTRACTOR. VI. FLYASH SHALL BE USED. ADMIXTURES CONTAINING CALCIUM CHLORIDE SHALL NOT BE USED. C. DO NOT PLACE CONCRETE AGAINST ACTIVE LEAKS OR SEAMS WITH FLOWING WATER. STOP FLOW OR DO NOT PLACE CONCRETE AGAINST ACTIVE LEAKS OR SEAMS WITH FLOWING WATER. STOP FLOW OR INSTALL DRAINAGE TO DIVERT FLOW AWAY FROM FRESH CONCRETE. D. CURE CONCRETE FOR 7 DAYS MINIMUM. DO NOT APPLY LOADS TO NEW CONCRETE FOR AT LEAST 7 CURE CONCRETE FOR 7 DAYS MINIMUM. DO NOT APPLY LOADS TO NEW CONCRETE FOR AT LEAST 7 DAYS UNLESS APPROVED BY THE ENGINEER. 3. REINFORCEMENT: REINFORCEMENT: A. ASTM A615 GRADE 60. ASTM A615 GRADE 60. B. FIELD BEND REINFORCING BARS TO CLEAR BOXOUTS AND PIPES WHERE REQUIRED. NO CUTTING OF FIELD BEND REINFORCING BARS TO CLEAR BOXOUTS AND PIPES WHERE REQUIRED. NO CUTTING OF REINFORCEMENT BARS SHALL BE DONE WITHOUT PRIOR APPROVAL OF ENGINEER. I. SPLICES: LENGTH SHALL BE PER REINFORCEMENT DEVELOPMENT SCHEDULE. SPLICES SHALL BE ACI CLASS B UNLESS NOTED OTHERWISE. II. DOWELS: PER REINFORCEMENT DEVELOPMENT SCHEDULE. PROVIDE DOWELS OF SIZE AND DIMENSION SHOWN. CLEAN DRILL HOLES WITH AIR PRESSURE TO REMOVE DUST AND STANDING WATER. HOLES MAY BE DAMP. GROUT SHALL BE NON-SHRINK PROPRIETARY CEMENT GROUT (4,000 PSI MINIMUM), OR EPOXY GROUT, AT CONTRACTOR'S OPTION. SELECTED GROUT MUST BE SUITABLE FOR USE IN WET HOLES. INSTALL PER MANUFACTURER'S INSTRUCTIONS. ENSURE THAT HOLES ARE COMPLETELY FILLED WITH GROUT. WHERE SURFACES ARE VERTICAL, INSTALL DOWELS WITH SLOPE DOWNHILL OR USING MANUFACTURER'S STANDARD HOLE STOPPER AND INJECTION SYSTEM. III. HOOKS: HOOKS IN BARS SHALL BE DIMENSIONED AND BENT PER ACI STANDARD HOOKS. IV. REBAR COVER: WATER PASSAGE - 5"; INTERIOR - 2" OR AS NOTED; EXTERIOR - 3". V. CONCRETE ANCHORS: CONCRETE ANCHORS: ADHESIVE ANCHOR BOLTS - HILTI, INC. HAS E STANDARD ISO 898 CLASS 5.8 RODS, UNLESS NOTED OTHERWISE. RODS SHALL BE INSTALLED WITH HIT-RE 500 INJECTABLE MORTAR, UNLESS NOTED OTHERWISE. ANCHORS SHALL BE INSTALLED PER MANUFACTURERS INSTRUCTIONS. MINIMUM EMBEDMENT SHALL BE 5” FOR 1/2" & 5/8” DIA. ANCHORS, 7” FOR 3/4" FOR 1/2" & 5/8” DIA. ANCHORS, 7” FOR 3/4" DIA. ANCHORS, 7” FOR 3/4" FOR 3/4" DIA. ANCHORS, AND 12” FOR 1” DIA. ANCHORS, UNLESS NOTED OTHERWISE THE CONTRACTOR SHALL FOR 1” DIA. ANCHORS, UNLESS NOTED OTHERWISE THE CONTRACTOR SHALL DIA. ANCHORS, UNLESS NOTED OTHERWISE THE CONTRACTOR SHALL ENGAGE A HILTI ANCHOR REPRESENTATIVE TO PROVIDE ONSITE INSTALLATION TRAINING FOR ALL OF THE ANCHORING PRODUCTS SPECIFIED. THE OWNER/ENGINEER SHALL RECEIVE DOCUMENTED CONFIRMATION THAT THE RELEVANT CONTRACTOR'S PERSONNEL ARE TRAINED PRIOR TO THE COMMENCEMENT OF ANCHOR INSTALLATION WORK. SUBMIT DOCUMENTED CONFIRMATION TO THE OWNER/ENGINEER. VI. CONTRACTOR MAY PROPOSE ADDITIONAL SPLICE LOCATIONS TO BE APPROVED BY OWNER. 4. FORMWORK AND CONSTRUCTION JOINTS: FORMWORK AND CONSTRUCTION JOINTS: A. CONSTRUCT FORMS TRUE TO LINE AND GRADE, ADEQUATELY BRACED TO MAINTAIN POSITION DURING CONSTRUCT FORMS TRUE TO LINE AND GRADE, ADEQUATELY BRACED TO MAINTAIN POSITION DURING PLACEMENT OF CONCRETE. WELDING OF FORM TIES TO STRUCTURAL DOWELS IS NOT PERMITTED, THOUGH ADDITIONAL DOWELS MAY BE INSTALLED FOR THAT PURPOSE. B. PROVIDE 3/4" CHAMFER ON ALL EXPOSED EDGES UNLESS NOTED OTHERWISE. PROVIDE 3/4" CHAMFER ON ALL EXPOSED EDGES UNLESS NOTED OTHERWISE. C. REPAIR ALL AIR HOLES AND VOIDS LARGER THAN 1/4" AND FILL ALL TIE HOLES. REMOVE FINS AND REPAIR ALL AIR HOLES AND VOIDS LARGER THAN 1/4" AND FILL ALL TIE HOLES. REMOVE FINS AND PROJECTIONS. D. CONSTRUCTION JOINTS SHOWN SHALL BE LOCATED AS SHOWN UNLESS OTHERWISE APPROVED BY THE CONSTRUCTION JOINTS SHOWN SHALL BE LOCATED AS SHOWN UNLESS OTHERWISE APPROVED BY THE ENGINEER. ADDITIONAL JOINTS MAY BE USED, WHERE THE STRENGTH AND DURABILITY OF THE STRUCTURE IS NOT AFFECTED AND ARE SUBJECT TO THE REVIEW OF THE ENGINEER. IF CONTRACTOR PROPOSES CONSTRUCTION JOINT LOCATIONS DIFFERENT FROM THOSE SHOWN ON DRAWINGS, CONTRACTOR SHALL SUBMIT LOCATION OF ANY PROPOSED CONSTRUCTION JOINT TO ENGINEER FOR REVIEW. E. REINFORCEMENT SHALL BE CONTINUOUS THRU JOINT, UNLESS NOTED OTHERWISE AND BE FULLY REINFORCEMENT SHALL BE CONTINUOUS THRU JOINT, UNLESS NOTED OTHERWISE AND BE FULLY DEVELOPED ON BOTH SIDE OF CONSTRUCTION JOINTS. F. CLEAN ALL JOINTS TO REMOVE LAITANCE WITH MIN. 1500 PSI WATER BLAST OR SANDBLASTING PRIOR TO CLEAN ALL JOINTS TO REMOVE LAITANCE WITH MIN. 1500 PSI WATER BLAST OR SANDBLASTING PRIOR TO NEXT CONCRETE PLACEMENT. MECHANICAL ROUGHENING IS AN ACCEPTABLE ALTERNATE FOR LAITANCE REMOVAL. ACID CLEANING/REMOVAL OF LAITANCE IS NOT ACCEPTABLE. G. SATURATE JOINT IMMEDIATELY PRECEDING AND 12 HOURS PRIOR TO NEXT CONCRETE PLACEMENT. SATURATE JOINT IMMEDIATELY PRECEDING AND 12 HOURS PRIOR TO NEXT CONCRETE PLACEMENT. REMOVE ALL STANDING WATER. H. MAXIMUM HORIZONTAL C.J. SPACING IS 12 FEET (U.N.O.). MAXIMUM HORIZONTAL C.J. SPACING IS 12 FEET (U.N.O.). 12 FEET (U.N.O.). FEET (U.N.O.). I. MAXIMUM VERTICAL C.J. SPACING IS 35 FEET (U.N.O.). MAXIMUM VERTICAL C.J. SPACING IS 35 FEET (U.N.O.). 35 FEET (U.N.O.). FEET (U.N.O.). 5. VERTICAL CONCRETE SURFACES SHALL HAVE A SMOOTH FORMED FINISH. HORIZONTAL CONCRETE SURFACES VERTICAL CONCRETE SURFACES SHALL HAVE A SMOOTH FORMED FINISH. HORIZONTAL CONCRETE SURFACES SHALL HAVE A SMOOTH RUBBED FINISH (U.N.O.), EXCEPT WALKING SURFACE SHALL HAVE BROOM FINISH.

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NOTES: : 1. SILT FENCE SHALL BE ENVIROFENCE AS MANUFACTURED BY MIRAFI INC, PROPEX SILT STOP AS MANUFACTURED BY SILT FENCE SHALL BE ENVIROFENCE AS MANUFACTURED BY MIRAFI INC, PROPEX SILT STOP AS MANUFACTURED BY AMOCO FABRICS CO. OR EQUAL. 2. POST SPACING SHALL BE 10 FT. CENTER TO CENTER IF WIRE REINFORCED SILT FENCE IS USED OR 6 FT CENTER TO POST SPACING SHALL BE 10 FT. CENTER TO CENTER IF WIRE REINFORCED SILT FENCE IS USED OR 6 FT CENTER TO CENTER IF NO WIRE REINFORCEMENT IS USED. 3. LOCATE DOWN-GRADIENT OF ALL DISTURBED AREAS AND TEMPORARY STOCKPILES. PLACE ALONG CONTOURS AT LOCATE DOWN-GRADIENT OF ALL DISTURBED AREAS AND TEMPORARY STOCKPILES. PLACE ALONG CONTOURS AT UNIFORM ELEVATION. BOTH ENDS OF EACH FENCE SECTION MUST BE EXTENDED AT LEAST 8 FEET UPSLOPE AT 45 DEGREES TO THE MAIN FENCE ALIGNMENT 4. SEDIMENT MUST BE REMOVED WHERE ACCUMULATIONS REACH 1/3 THE ABOVE GROUND HEIGHT OF THE FENCE. 5. SILT FENCE TO BE INSPECTED AFTER EACH RUNOFF EVENT AND AT LEAST WEEKLY AND REPAIRED/MAINTAINED AS NEEDED.

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POSTS

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FILTER FABRIC (SEGMENT A)

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FILTER FABRIC (SEGMENT B)

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POSTS

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TOE-IN FABRIC

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WOOD OR STEEL POST 5'-0" LONG, 1'-6" MIN. EMBEDMENT INTO GROUND (SEE NOTE 2)

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36" TALL MIN. FILTER FABRIC (SEE NOTE 1)

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NATIVE SOIL

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FILTER FABRIC (SEGMENT A)

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FILTER FABRIC (SEGMENT B)

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EXISTING GRADE

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5'-0" FROM DISTURBED AREA OR SPOILS PILE

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6"

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6"

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FLOW

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1. EROSION & SEDIMENT CONTROL: A. EROSION PREVENTION AND SEDIMENT CONTROL SHALL BE IN ACCORDANCE WITH "THE VERMONT STANDARDS AND EROSION PREVENTION AND SEDIMENT CONTROL SHALL BE IN ACCORDANCE WITH "THE VERMONT STANDARDS AND SPECIFICATIONS FOR EROSION PREVENTION & SEDIMENT CONTROL, 2006". B. ALL TEMPORARY EROSION AND SEDIMENT CONTROL MEASURES SHALL BE REMOVED WITHIN 30 DAYS AFTER FINAL ALL TEMPORARY EROSION AND SEDIMENT CONTROL MEASURES SHALL BE REMOVED WITHIN 30 DAYS AFTER FINAL SITE STABILIZATION OR AFTER THE TEMPORARY MEASURES ARE NO LONGER NEEDED, UNLESS OTHERWISE AUTHORIZED. C. ALL SEDIMENT REMOVED FROM SEDIMENT CONTROL PRACTICES AS A PART OF MAINTENANCE SHALL BE DISPOSED ALL SEDIMENT REMOVED FROM SEDIMENT CONTROL PRACTICES AS A PART OF MAINTENANCE SHALL BE DISPOSED OF IN AN AREA THAT IS: I. LESS THAN 5% IN SLOPE. II. AT LEAST 100 FT. FROM ANY DOWNSLOPE WATER BODY OR CONVEYANCE TO A WATER BODY (INCLUDING STORM DRAIN INLET OR DITCH). III. VEGETATED. D. PERMANENT STABILIZATION OF SEDIMENT SHALL BE IMMEDIATELY IMPLEMENTED FOLLOWING DISPOSAL. PERMANENT STABILIZATION OF SEDIMENT SHALL BE IMMEDIATELY IMPLEMENTED FOLLOWING DISPOSAL. E. ANY AREA TO BE STABILIZED FOR WINTER THAT DOES NOT HAVE ESTABLISHED VEGETATION BY OCTOBER 15 SHALL ANY AREA TO BE STABILIZED FOR WINTER THAT DOES NOT HAVE ESTABLISHED VEGETATION BY OCTOBER 15 SHALL BE STABILIZED BY ANCHORED MULCH AT THE WINTER APPLICATION RATE, OR OTHER APPROVED STABILIZATION MEASURES (E.G. ROLLED EROSION CONTROL PRODUCT). DORMANT SEEDING (E.G. WITH WINTER RYE) IS RECOMMENDED. F. ALL AREAS REQUIRING WINTER VEGETATION MEASURES SHALL BE RE-SEEDED DURING THE SPRING OF THE ALL AREAS REQUIRING WINTER VEGETATION MEASURES SHALL BE RE-SEEDED DURING THE SPRING OF THE FOLLOWING YEAR PER VDOT REQUIREMENTS. G. ALL AREAS OF DISTURBANCE SHALL HAVE TEMPORARY OR PERMANENT STABILIZATION WITHIN 14 DAYS OF THE ALL AREAS OF DISTURBANCE SHALL HAVE TEMPORARY OR PERMANENT STABILIZATION WITHIN 14 DAYS OF THE INITIAL DISTURBANCE. AFTER THIS TIME, ANY DISTURBANCE IN THE AREA SHALL BE STABILIZED AT THE END OF EACH WORK DAY. THE FOLLOWING EXCEPTIONS APPLY: I. STABILIZATION IS NOT REQUIRED IF WORK IS TO CONTINUE IN THE AREA WITHIN THE NEXT 24 HOURS AND I. STABILIZATION IS NOT REQUIRED IF WORK IS TO CONTINUE IN THE AREA WITHIN THE NEXT 24 HOURS AND THERE IS NO PRECIPITATION FORECAST FOR THE NEXT 24 HOURS. II. STABILIZATION IS NOT REQUIRED IF THE WORK IS OCCURRING IN A SELF-CONTAINED EXCAVATION (I.E. NO II. STABILIZATION IS NOT REQUIRED IF THE WORK IS OCCURRING IN A SELF-CONTAINED EXCAVATION (I.E. NO OUTLET) WITH A DEPTH OF 2 FEET OR GREATER.

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1. INSTALL SEDIMENT & EROSION CONTROL MEASURES. 2. REPLACE FLOOR GRATING WITHIN GATEHOUSE. 3. INSTALL NEW CONCRETE ABUTMENT FOR NEW STEEL WALKWAY, BACKFILL AND PERFORM FINAL GRADING. 4. PROVIDE NEW STEEL FRAMED/GRATED WALKWAY FROM DAM CREST TO GATEHOUSE. 5. REMOVE, REFURBISH EXISTING HEADGATE (INSIDE GATEHOUSE) AND STEM, AND REINSTALL. 6. INSTALL NEW HEADGATE OPERATOR AND SUPPORT STEEL 7. PERFORM CONCRETE REPAIRS TO HEADGATE GUIDES. 8. REGRADE ROADWAY ON CREST OF DAM AS SPECIFIED BY OWNER.

NOT TO SCALE

1" UP TO 5" DEEP

PATCH REPAIR DETAIL

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DEEPER THAN 5"

PATCH REPAIR DETAIL

NOT TO SCALE

TYPICAL HAIRLINE CRACK

NON-STRUCTURAL REPAIR DETAIL

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1/8" UP TO 1" DEEP

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TYPICAL LARGE CRACK

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©


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141 Main Street P.O. Box 650

Pittsfield, Maine 04967

Telephone: (207) 487-3328

Fax: (207) 487-3124

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COLCHESTER, VT.




TYPICAL CONCRETE REPAIR DETAILS

012-170 01-30-18 G-02CFTJDB ABH

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NOTE: AT TIME OF CONCRETE PLACEMENT, SURFACE TO BE SATURATED WITH WATER, BUT NO STANDING WATER.

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EXISTING CONCRETE SURFACE

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CHIP TO SOUND CONCRETE AND CLEAN SURFACE

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POLYMER MODIFIED CONCRETE

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USE FORM TO PATCH

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USE FORM TO PATCH

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#5@12 E.W.

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#5 DOWELS W/ 10" HOOK @ 24" O.C., DRILL & GROUT W/ 1'-3" MIN. EMBEDMENT EXCEPT WHERE CONCRETE IS NOT THICK ENOUGH, THEN STOP DRILL HOLE 2" PRIOR TO BREAKTHROUGH

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4000 PSI CONCRETE

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CAULK WITH ELASTOMERIC SEALANT, SIKA 1-A OR EQUAL

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SAWCUT 3/8" WIDE x 1/4" DEEP

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EXISTING CRACK

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SMOOTH SURFACE FINISH USING WOOD OR SPONGE FLOAT

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EXISTING CRACK

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SMOOTH SURFACE FINISH USING WOOD OR SPONGE FLOAT

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2017 KLEINSCHMIDT ASSOCIATES.

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THIS DOCUMENT IS A DRAFT VERSION PROVIDED FOR THE CONVENIENCE OF THE USER AND IS NOT AN INSTRUMENT OF SERVICE OF KLEINSCHMIDT ASSOCIATES UNLESS IT BEARS THE PROFESSIONAL ENGINEER'S STAMP AND ORIGINAL SIGNATURE. THIS DOCUMENT IS NOT A PRODUCT, AND TRANSFER OF A VERSION OF AN INSTRUMENT OF SERVICE BY ELECTRONIC MEDIA IS NOT DEEMED A SALE. THIS DOCUMENT MAY NOT BE ALTERED BY OTHERS OR USED FOR PROJECTS OR PURPOSES OTHER THAN THE PROJECT FOR WHICH IT WAS PREPARED, WITHOUT THE EXPRESS WRITTEN PERMISSION OF KLEINSCHMIDT ASSOCIATES.

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1. REPAIR AREAS PROVIDED ARE APPROXIMATE. ACTUAL REPAIR AREAS TO BE FIELD DETERMINED BY CONSTRUCTION MANAGER AND OR PROJECT ENGINEER. 2. SURFACE PREPARATION: A. REMOVE DETERIORATED SURFACE MATERIAL IN DESIGNATED AREAS DOWN TO SOUND CONCRETE. SOUND CONCRETE IS DEFINED AS WHEN THE SURFACE IS STRUCK WITH A GEOLOGIST'S HAMMER, THE AGGREGATE OF THE CONCRETE FRACTURES BEFORE THE CEMENT PASTE BOND IS BROKEN. B. PERFORM REMOVAL WITH POINTED TOOLS THAT DO NOT DAMAGE OR FRACTURE THE UNDERLYING SOUND CONCRETE, OR BY HYDROBLASTING. C. IF REINFORCEMENT STEEL IS ENCOUNTERED, THE CONCRETE SHALL BE REMOVED TO A MINIMUM OF 1" CLEARANCE BEHIND THE BARS. LOOSE RUST SHALL BE REMOVED, AND THE STEEL SHALL BE COATED WITH A PRIMER, SIKA ARMATEC 111 OR FOSROC NITROPRIME ZINCRICH, APPLIED PER MANUFACTURER'S INSTRUCTIONS. D. ROUGHEN ALL SURFACES TO A MINIMUM OF 1/8" AMPLITUDE. CLEAN SURFACE TO REMOVE ALL DELETERIOUS MATERIAL, INCLUDING DIRT, GREASE, ETC. WASH WITH HIGH PRESSURE WASH (AT LEAST 2,000 PSI PRESSURE). 3. POLYMER MODIFIED CONCRETE PATCH REPAIRS: A. HORIZONTAL SURFACES - SIKATOP 122 OR FOSROC RENDEROC SD. B. VERTICAL OR OVERHEAD SURFACES - SIKATOP 123 OR FOSROC RENDEROC HB. C. FOR PATCHES GREATER THAN 1" DEEP, THE POLYMER MODIFIED MORTAR MATERIALS MAY BE EXTENDED USING 3/8" PEA STONE, PER MANUFACTURER'S INSTRUCTIONS. 4. INSTALLATION OF PATCHES: A. PREPARE SURFACE AS SHOWN IN DETAILS AND AS DESCRIBED IN NOTES ABOVE. B. SCRUB A COAT OF POLYMER CONCRETE MORTAR INTO SURFACE TO FILL ALL VOIDS AND PORES FOR PATCHES WITH POLYMER CONCRETE. VERTICAL AND OVERHEAD, OR PATCHES ON SLOPING SURFACES, GREATER THAN 1" DEEP, SHALL BE FORMED AND THE MATERIAL POURED INTO THE REPAIR. C. FOLLOW MANUFACTURER'S INSTRUCTIONS FOR INSTALLATION OF REPAIR MATERIALS.

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CONCRETE RESURFACING AND REPAIR NOTES:

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G-03


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EXISTING INTAKE PLAN AND PROFILE

10

SCALE IN FEET

100 20

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STA. 0+00 INTAKE GATE

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STA. -0+25

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STA. -0+50

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STA. -0+75

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STA. 0+25

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STA. 0+50

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STA. 0+75

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STA. 1+00

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STA. 1+25

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STA. 1+50

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STA. 1+75

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EXISTING GATEHOUSE. FOR DETAILS SEE SHEET G-06G-06

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EXISTING TRASHRACKS

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EXISTING CONCRETE PENSTOCK

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STEEL PENSTOCK

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CONCRETE PENSTOCK

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FLOW

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APPROXIMATE EXISTING WATERLINE

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1240

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1240

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1230

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1220

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1210

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1230

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EXISTING ACCESS PLATFORM, TO BE REMOVED

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INSTALL SILT FENCE

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STA. 0+00 EXISTING HEAD GATE

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NORMAL POND EL. 1228.4'

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EXISTING GATEHOUSE FLOOR EL. 1239.61'±

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EXISTING GATEHOUSE. FOR DETAILS SEE SHEET G-06G-06

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EXISTING TRASHRACKS

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CONCRETE PENSTOCK

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DAM CREST EL. 1240.0'±

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APPROXIMATE EXISTING GRADE

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STEEL PENSTOCK

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0+00

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0+25

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0+50

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0+75

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1+00

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1+25

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1+50

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1+75

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-0+25

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-0+50

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-0+75

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-1+00

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EXISTING CONCRETE PENSTOCK

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EXISTING GATE SILL EL. 1198.4'±FOR EXISTING GATE DETAILS, SEE SHEET G-08G-08

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FLOW

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1240.0

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1230.0

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1220.0

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1210.0

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1200.0

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1190.0

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1250.0

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1260.0

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1270.0

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1240.0

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1230.0

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1220.0

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1210.0

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1200.0

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1190.0

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1250.0

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1260.0

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1270.0

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EXISTING ACCESS PLATFORM, TO BE REMOVED

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SEE SHEET G-04 & G-05 FOR G-04 & G-05 FOR FOR NEW ACCESS PLATFORM & CONCRETE NEW ABUTMENT DETAILS

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SEE SHEET G-04 FOR G-04 FOR FOR PROPOSED ACCESS PLATFORM

PROFILE

1/2"= 1'-0"

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G-04


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EXISTING GATEHOUSE

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EL. 1239.61'±GATEHOUSE FLOOR

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NEW CONCRETE ABUTMENT T.O.C. EL. 1239.61'±(MATCH FLOOR OF EXISTING GATEHOUSE, FIELD VERIFY)

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NEW STEEL WALKWAY

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NEW STEEL PLATFORM ATTACHED TO DOWNSTREAM FACE OF EXISTING CONCRETE

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APPROXIMATE EXISTING GRADE

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APPROXIMATE LINE OF EXCAVATION, MINIMIZE EXCAVATION INTO EXISTING EMBANKMENT

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ROADWAY EL. 1240.0'

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BACKFILL WITH EXCAVATED MATERIAL & COMPACT

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LOAM & SEED DISTURBED AREAS

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1 1/2" DIA. SCHEDULE 80 POSTS AT 5'-0" O.C. MAX SPACING (TYP.)

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GRATING

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1 1/2" DIA. SCHEDULE 40 RAILS (TYP.)

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1'-9"

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PROVIDE HANDRAIL RETURN AT END

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FACE OF EXISTING CONCRETE

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FACE OF NEW CONCRETE

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FACE OF EXISTING BRICK GATEHOUSE

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EL. 1235.61'±

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FINISHED GRADE SHALL MATCH EXISTING GRADES

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SEE SHEET G-06 FOR GATEHOUSE G-06 FOR GATEHOUSE FOR GATEHOUSE REFURBISHMENTS

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GATEHOUSE AND NEW STEEL WALKWAY

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NEW CONCRETE ABUTMENT

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GRATING

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SPAN

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SPAN

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NEW STEEL PLATFORM, FOR ADDITIONAL DETAILS SEE SHEET G-05G-05

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EXISTING BURIED CONCRETE PENSTOCK

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1/4

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TYP.

B

SECTION

1 1/2"= 1'-0"

C

SECTION

1 1/2"= 1'-0"

FRAMING PLAN (T.O.S. EL. 1239.94')

1/2"= 1'-0"

C

E

B

D

A

SCALE IN FEET

2 0 2 4

D

SECTION

1 1/2"= 1'-0"

E

SECTION

1 1/2"= 1'-0"

SCALE IN INCHES

8 0 8 16

A

SECTION

3/4"= 1'-0"

SCALE IN FEET

1 0 1 32

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SECTIONS AND DETAILS

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HSS4

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L4x4x3/8

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MC12

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L3x3x1/4

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COPE

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L3

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L3

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GRATING

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MC12

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MC12

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(2) 3/4" ADHESIVEANCHORS, DRILL & GROUT WITH 6 3/4" MIN. EMBEDMENT

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C6x13

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3/16

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3/16

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3/16

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MC12

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1/2" PLATE

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1/2" PLATE (TYP.)

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SYMMETRICAL ABOUT CENTERLINE

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COPE

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3/4" THRUBOLTS (TYP.)

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L4x3x1/4

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FACE OF EXISTING BRICK

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EXTEND GRADING TO EXISTING STRUCTURE

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EL. 1239.61'±

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EL. 1239.61'±

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EL. 1239.61'±

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EL. 1239.94'±

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WEEP HOLE

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L3x3x1/4 (-0.4375')

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MC12x31

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MC12x31

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DO

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L3x3x1/4

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MC12x31

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MC12x31

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C6x13 (-0.4375')

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DO

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DO

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DO

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DO

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L3x3x1/4

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DO

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DO

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DO

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L3x3x1/4

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L3x3x1/4

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DO

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C6x13 (-0.4375')

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C6x13 (-0.4375')

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MC12x31

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HSS4x1/4 (DIAGONAL)

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HSS4x1/4 (DIAGONAL)

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L3x3x1/4 (-0.4375')

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EXISTING CONCRETE

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5 BAYS AT 4'-0" O.C.

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1/2"

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REINFORCEMENT, SEE SECTION D THIS SHEET

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GRATING SPAN

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L3x3x1/4

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L3x3x1/4

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GRATING SPAN

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L5x5x3/8 (-1.042')

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(2) 3/4" THRU BOLTS W/NUTS & WASHERS (TYP.), PROVIDE LONG SLOTTED HOLES IN L5

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L3x3x1/4 x 3'-0"

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L4x3x1/4

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L3x3x1/4 x 6'-11"

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MC12

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COPE

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GRATING

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1/2" BASEPLATE

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L5

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3/16

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EL. 1239.61'±

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EL. 1239.61'±

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EL. 1235.61'±

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#5@12 E.W. E.F.

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L3

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L3

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GATEHOUSE

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EXTEND GRATING TO GATEHOUSE

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PROVIDE TOOLED EDGE AT THIS EDGE, CHAMFER ALL OTHER EDGES

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SYMMETRICAL ABOUT CENTERLINE

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MC12

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C6

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1/4" STIFFENER PLATE

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3/16

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L5x5x3/8

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EL. 1239.61'±

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MC12

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EL. 1239.61'±

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C6

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PERSONNEL GUARDRAIL

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TYP.

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FASTEN GRATING AT EACH SUPPORT MEMBER W/ MIN. 2 GRATING CLIPS

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PLAN

3/4"= 1'-0"

SCALE IN FEET

1 0 1 32

A

SECTION

3/4"= 1'-0"

1

1 1/2"= 1'-0"

ACTUATOR SUPPORT DETAIL

B

1

B

SECTION

1 1/2"= 1'-0"

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GATE HOUSE PLAN AND SECTION

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EXISTING GATEHOUSE

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FLOW

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NEW 3 1/2" GATE STEM

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NEW GATE ACTUATOR WITH HANDWHEEL

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NEW REMOVABLE GRATING PANEL

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FLOOR EL. 1239.61'±

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DEPTH OF EXISTING GRATING SHELF SHALL BE FIELD VERIFIED. IF DEPTH OF EXISTING GRATING SHELF IS 3/4" MIN., USE 3/4"x 3/16" 19W4 GALVANIZED BAR GRATING.

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NEW STEEL PLATFORM, FOR ADDITIONAL DETAILS SEE SHEET G-04G-04

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(FIELD VERIFY ALL GRATING DIMENSIONS PRIOR TO FABRICATION)

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NEW GATE PEDESTAL SUPPORT FRAME, BELOW

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THESE BOLTS SHALL BE BOLTED THRU THE BASE PLATE AND CHANNEL SUPPORT MEMBERS

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REMOVE EXISTING WOODEN FRAMED ROOF STRUCTURE FOR HEADGATE REMOVAL. REPLACE PER OWNER REQUIREMENTS

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EXISTING BRICK WALLS

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EXISTING WINDOWS, REPLACE PER OWNER REQUIREMENTS

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EXISTING CONCRETE FOUNDATION

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EXISTING ENTRY DOOR, REPLACE PER OWNER REQUIREMENTS

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3 1/2" GATE STEM

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NEW GATE ACTUATOR HANDWHEEL. SEE NEXT SHEET FOR GATE DETAILS

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FLOOR EL. 1239.61'±

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NOTES: 1. REMOVE OPERATOR AND GATE HOUSE REMOVE OPERATOR AND GATE HOUSE ROOF TO LIFT HEADGATE OUT OF THE SLOT. 2. CLOUDED DIMENSIONS AND ELEVATION SHALL CLOUDED DIMENSIONS AND ELEVATION SHALL BE FIELD VERIFIED.

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NEW GATE ACTUATOR PEDESTAL

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4" CLEAR P.V.C.STEM COVER

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FULL UP STEM EL. 1249.53'±

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FULL DOWN STEM EL. 1243.53'±

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FULL UP NEW COUPLING EL. 1237.53'±

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EXISTING STEM GUIDE TO BE REVISED. REMOVE AND REINSTALL IF NECESSARY.

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EXISTING STEM GUIDE EL. 1228.11 ±

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FIELD CONFIRM COUPLING CONFIGURATION AND MACHINE NEW STEM END TO MATCH

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NEW STEM COUPLING

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NEW STEM SECTION. PROVIDE LONG AND CUT TO CORRECT LENGTH AFTER FIELD CONFIRMATION

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W18x35

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3/8" THICK WEB STIFFENER PLATES, TYP.

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DECK EL. 1239.61'

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GATE STEM

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NEW GRATING IN EXISTING GRATING SEAT

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ACTUATOR PEDESTAL BASE

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2" THICK ACTUATOR PEDESTAL MOUNTING PLATE, PROVIDE HOLES TO MATCH PEDESTAL

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INSTALL SO W18 IS FLUSH WITH TOP OF EXISTING GRATING SEATS

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MC12x31 x 5'-0" LONG

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3/8" THICK STIFFENER PLATE EITHER SIDE OF WEB, TYP.

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3/4" A325 BOLTS, TYP.

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MC8x18.7

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(4) 3/4" DIA. HILTI HIT-HY 200 HAS B7 ANCHORS WITH 9" MIN. EMBEDMENT, SPACED AT 18" O.C., TYP.

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3/16

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TYP.

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3/16

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TYP.

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DECK EL. 1239.61'

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GATE STEM

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ACTUATOR PEDESTAL BASE

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3/8" THICK WEB STIFFENER PLATES, SPACED EVENLY AROUND BOLTS, TYP.

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3/4" A325 BOLTS, TYP.

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W18x35

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NEW GRATING

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MC12x31 x 5'-0" LONG

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(4) 3/4" DIA. HILTI HIT-HY 200 HAS B7 ANCHORS WITH 9" MIN. EMBEDMENT, SPACED AT 18" O.C., TYP.

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ACTUATOR PEDESTAL MOUNTING PLATE

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MC8x18.7

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3/8" THICK STIFFENER PLATE EITHER SIDE OF WEB, TYP.

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3/16

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TYP.

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A A

ROOF FRAMING PLAN

1/2"= 1'-0"

CEILING FRAMING PLAN

1/2"= 1'-0"

SCALE IN FEET

2 0 2 4

A

SECTION

1/2"= 1'-0"

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G-07


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GATE HOUSE REMOVABLE ROOF

1

1"= 1'-0"

DETAIL

1

1"= 1'-0"

DETAIL

2

2

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FLOOR EL. 1239.61'±

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EXISTING GATE STEM

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2x6 SUBFASCIA (AROUND PERIMETER)

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4 - 1 3/4" X 11 1/4" LVL GIRDER

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6x6 CENTER POST

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6x6 CENTER POST

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2x6 JACK RAFTERS AT 24" O.C.

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2x6 HIP RAFTERS

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2x4 HIP RAFTER TIES

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2x6 CEILING JOISTS

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OUTLINE OF BRICK WALL

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6x6 CENTER POST

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2x6 JACK RAFTERS

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HARDIESOFFIT

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HARDIETRIM FASCIA

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GALV. DRIP EDGE

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ICE & WATER UNDERLAYMENT

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JACK HANGER

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ASPHALT SHINGLES

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SIMPSON STRONG TIE H1 HURRICANE CLIP AT JACK RAFTERS

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2x6 SUBFASCIA

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2x6 RAFTER PLATE

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8" x 8" x 3/8 GALV. PLATE

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CROSBY G-405 SIZE NO.7 LIFTING EYE NUT

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PROVIDE FLASHING OVER 6x6 CENTER POST

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DOUBLE NUT

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ROD THREADED AT EACH END

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CORE DRILL FOR ROD

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5/8" CDX PLYWOOD SHEATHING

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12H

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6V

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2x6 JACK RAFTERS

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EXISTING BRICK WALL

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NEW 4x10 P.T. CAP FASTENED TO TOP OF EXISTING WALL

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PROVIDE HIP-CORNER PLATES AT HIP RAFTERS

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6" x 6" x 3/8 GALV. PLATE

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2x4 HIP RAFTER TIES

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2x4 HIP RAFTER TIES

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SILL SEAL MEMBRANE

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1/2" DIA. EXPANSION ANCHORS AT 24" O.C. (5 PER SIDE) CENTERED AROUND PERIMETER OF 4x10, COUNTERSINK BOLT HEADS

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HARDIETRIM AROUND PERIMETER

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CONNECT BOTTOM OF CENTER POST TO MAIN BEAM WITH SIMPSON STRAPS

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SIMPSON FRAMING ANGLES

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1" DIAMETER A36 THREADED ROD

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3 - 2X12 RIM JOIST (ALL AROUND)

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GALV. OUTSIDE CORNER PLATE. BENT PLATE 1'-1 3/4" x 1'-1 3/4" x 7"

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(4) 5/8" DIA. CARRIAGE BOLTS

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GALV. INSIDE CORNER BRACKET (WHERE SHOWN IN PLAN, 8 TOTAL). BENT PLATE 8 1/2" x 8 1/2" x 7" x 1/4" W/ 1/4" STIFFENER PLATE

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2'-1" x 7" x 1/4" GALV. PLATE

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TWO-3/4" A325 THRU BOLTS SPACED AT 18" O.C.

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JOIST HANGERS (TYP) EACH END

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L4x4x1/4 x 8" LONG W/ (2) 1/2" DIA. CARRIAGE BOLTS INTO RIM JOISTS AND (2) 1/2" DIA. x 3 1/2" LAG SCREWS INTO PT CAP (PROVIDE 8 ASSEMBLIES TOTAL)

1"= 1'-0"

PLAN

1"= 1'-0"

ELEVATION LOOKING DOWNSTREAM

A

SECTION

1"= 1'-0"

A

1

GATE GUIDE DETAIL

3"= 1'-0"

1

012-170 01-30-18


COLCHESTER, VT.

G-08


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Jan. 31, 2018 - 7:38 A

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22x34 =

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Date Drawn Checked


RevisionNo.

01"

2"

3"

888-224-5942

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EXISTING HEAD GATE DETAILS

AND REPAIR NOTES

SCALE IN FEET

1 0 1 2

HEADGATE REPLACEMENT NOTES:

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STIFFENER PLATES, TYP.

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1/2"± SKIN PLATE

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STIFFENER PLATES, TYP.

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1" DIA. VERTICAL BUMPER PIN, EACH SIDE

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SKIN PLATE, BEYOND

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3 1/2" GATE STEM

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SKIN PLATE

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3 1/2" GATE STEM

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1" DIA. VERTICAL BUMPER PIN, EACH SIDE

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NOTE: GATE GEOMETRY SHOWN IN THIS DRAWING DERIVED FROM DIVE SURVEY, NO OTHER AVAILABLE DATA.

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6" WIDE X 12" LONG (U/S TO D/S) STRIP OF EXPOSED AGGREGATE LOCATED APPROX. 2.5' UP FROM THE FLOOR. MAY OR MAY NOT BE A POSSIBLE LEAKAGE PATH LOCATION

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SCOPE OF WORK: 1. REMOVE EXISTING STEEL HEAD GATE AND STEM. 2. REMOVE ANY EXISTING COATING ON GATE AND STEM 3. RE-COAT EXISTING GATE AND STEM SECTION TO REMAIN. 4. DETERMINE EXTENT OF CONCRETE DETERIORATION AROUND WATER PASSAGE OPENING AT THE HEAD GATE LOCATION. 5. REMOVE ALL LOOSE AND DETERIORATED CONCRETE AROUND THE WATER PASSAGE OPENING. 6. FILL IN THE CONCRETE VOIDS AROUND BOTH SIDES, SILL, AND HEADER OF THE WATER PASSAGE OPENING WITH SUBAC UNDERWATER CEMENT. 7. ASSEMBLE AND INSTALL THE REFURBISHED HEAD GATE AND STEM INTO THE EXISTING GATE SLOTS. 8. HEAD GATE COATING: SURFACE PREPARATION: SSPC-SP 10 NEAR WHITE COAT 1: TNEMEC 91H20 OR APPROVED OWNER EQUIVALENT AT 3 MILS DFT COATS 2 AND 3: TNEMEC N140F OR OWNER APPROVED EQUIVALENT AT 10-12 MILS DFT, FOR EACH COAT. COLOR - BLACK 9. UNDERWATER CONCRETE REPAIRS: A. PRESSURE WASH (3,000 PSI) GATE GUIDE CONCRETE VOID AREAS TO REMOVE LOOSE AND DETERIORATED MATERIAL. B. USE SUBAC UNDERWATER CEMENT (OR APPROVED EQUIVALENT) ALONG THE SIDES, SILL, AND HEADER OF THE WATER PASSAGE OPENING TO FILL THE VOIDS THAT ARE CAUSING LEAKAGE PAST THE HEAD GATE. C. EPOXY INSTALLATION OF #5 REBAR DOWELS AT 12" O.C. IN VOID AREAS GREATER THAN 5" DEPTH. USE HILTI RE 500 INJECTION ADHESIVE AND A MIN. EMBEDMENT OF 8"

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marshfield spillway improvements gatehouse and …

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