BHD GH Roof Replacement Plan.pdf
PDF 694 KB Posted
- Solicitation number
- W912WJ23Q0111
About this file
This package includes construction drawings and specifications for a roof replacement project at Birch Hill Dam gatehouse in Royalston, Massachusetts. The project involves removing the existing 60-mil EPDM roof membrane and insulation down to the concrete deck, installing a new fully adhered 60-mil EPDM membrane with tapered insulation, adding new roof drains and walk pads, and reinstalling the lightning protection system. Drawing A-101 shows the roof plan with dimensions and notes. Drawing A-102 provides section and detail views of the new roofing system installation at scuppers, drains, seams and other elements. Specifications require verifying all dimensions, safely accessing the roof, and fully adhering the new membrane in accordance with the drawings and specifications.
The related federal contract opportunity is solicitation number W912WJ23Q0111 for gatehouse masonry waterproofing at Birch Hill Dam in Royalston, Massachusetts, issued by the Department of the Army Corps of Engineers New England District. The solicitation involves the roof replacement project shown in the construction drawings.
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Other files
| File | Type | Posted |
|---|---|---|
| Amendment W912WJ23Q0111-0002.pdf | ||
| BHD GH Roof Plan.pdf | ||
| Amendment W912WJ23Q0111-0001.pdf | ||
| Solicitation W912WJ23Q0111.pdf |
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SIGNATURES AFFIXED BELOW INDICATE OFFICIAL RECOMMENDATION AND APPROVAL
OF ALL DRAWINGS IN THIS SET AS INDEXED ON THIS SHEET
APPROVED FOR TECHNICAL ADEQUACY BY:
TECHNICAL LEAD ENGINEER DATE
DATE
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APPROVED BY:
APPROVAL RECOMMENDED BY:
CHIEF, ENGINEERING / PLANNING DIVISION
VICINITY MAP
NOT TO SCALE
NOT TO SCALE
LOCATION PLAN
This project was designed by the U.S. Army Corps of Engineers. The initials or signatures and registration designations of individuals appear on these project documents, within the scope of their employment as required by ER 1110-1-8152.
COVER SHEET
BHDT102.S03
BHRP101.S02
RRSGBS.DGN
DESIGN FILESHEET NO.
G-001
A-101
A-1023
INDEX TO DRAWINGS
SHEET TITLE
G-001
NEW ENGLAND
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REVIEWED BY:
CHIEF, GEOTECHNICAL/WATER RESOURCES BRANCH
CHIEF, GEO-ENVIRONMENTAL BRANCH
REVIEWED BY:
CHIEF, DES BR / DEPUTY CHIEF, ENGINEERING/PLANNING DIVISION
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REPLACE GATEHOUSE
ROOFING SYSTEM
BIRCH HILL DAM
ROYALSTON,
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ROOF PLAN
DETAILS
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SLOPE
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SCALE : 1/4 "=1’-0"
A-1
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25’-2 1/2 "
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1/4 "/1’
1/4 "/1’
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ROOF VENT TO
REMAIN AS SHOWN
ROOF VENT TO
REMAIN AS SHOWN
EXISTING FLOOD LIGHT
TO REMAIN
EXISTING FLOOD LIGHT
TO REMAIN
EXISTING LADDER
TO REMAIN AS IS.
EXISTING FLOOD LIGHT
TO REMAIN
EXISTING FLOOD LIGHT
TO REMAIN
EXISTING FLOOD LIGHT
WITH 1" ELECTRICAL
CONDUIT TO REMAIN
A-2
REMOVE AND REPLACE
EXISTING LIGHTNING
PROTECTION (TYP.)
REMOVE EXISTING 2" THICK
LAYER OF BALLAST ON EPDM
ROOF (TYP.), SAVE, AND REUSE
BIRCH HILL GATEHOUSE ROOF PLAN
1/4 " = 1’-0"
4’ 0 4’ 8’
NEW ROOF DRAIN
NEW ROOF DRAIN
NEW RUBBER WALK
PADS AS SHOWN (TYP.)
6. INSTALL NEW ROOF DRAIN PER SPEC.
REQUIREMENTS. VERIFY EXISTING
DRAIN SIZE IN THE FIELD PRIOR TO ORDERING NEW ROOF
DRAINS. SEE ROOF DRAIN DETAIL ON SHEET A-2.
7. INSTALL NEW RUBBER WALK PADS AS SHOWN PER
SPEC. REQUIREMENTS. ADHERE WALK PADS DIRECTLY
TO THE EPDM ROOFING SURFACE.
8. PLACE EXISTING STONE BALLAST SALVAGED DURING
ROOF REMOVAL AROUND ALL WALK PADS ON THE ENTIRE
ROOF SURFACE PER SPEC. REQUIREMENTS.
9. TIE NEW EPDM ROOF INTO EXISTING SCUPPER
FLASHING, SEE SCUPPER DETAILS ON SHEET A-2.
GENERAL NOTES:
1. THE CONTRACTOR SHALL VERIFY ALL DIMENSIONS AND
CONDITIONS IN THE FIELD.
2. THE ROOF SLAB IS APPROXIMATELY 20.5 FEET ABOVE FINISH
GRADE LEVEL. ACCESS TO THE ROOF BY THE EXISTING METAL LADDER
REQUIRES THE USE OF A SAFETY BELT. ACCESS TO THE LOWER END
OF THE EXISTING METAL LADDER REQUIRES THE USE OF A PORTABLE
LADDER.
3. THE EXISTING 60 MIL EPDM ROOF SYSTEM AND ALL
INSULATING MATERIAL IS TO BE REMOVED ENTIRELY PER
SPEC. REQUIREMENTS. EXISTING STONE BALLAST
IS TO BE REMOVED, SAVED, AND REUSED.
4. REMOVE EXISTING LIGHTNING PROTECTION SYSTEM
AND ANY ELECTRICAL CONDUIT ATTACHED TO EXISTING FLOOD
LIGHTS BEFORE INSTALLING NEW ROOFING MATERIALS. RE-INSTALL
LIGHTNING PROTECTION AND ELECTRICAL CONDUIT AFTER ROOFING
IS INSTALLED.DISCONNECT ELECTRICAL POWER PRIOR TO CONDUIT
REMOVAL, RECONNECT UPON COMPLETION OF WORK.
5. INSTALL NEW 60 MIL EPDM ROOF MEMBRANE
FULLY ADHERED WITH TAPERED INSULATION TO THE EXISTING 4"
CONCRETE DECK PER SPEC REQUIREMENTS. ROOF SLOPE 1/4 " = 12"
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SCALE : 1 1/2 "=1’-0"
SECTION AT SCUPPER
EXISTING CONC. SLAB
LAP EDGE SEALANT
60 MIL EPDM ROOF
MEMBRANE FULLY
ADHERED
EXISTING MASONRY
TO REMAIN
EXISTING 14" X 7" ALUM.
SCUPPER TO REMAIN
NEW EPDM FLASHING TO TIE INTO
EXISTING ALUMINUM SCUPPER
2" OF RIGID
INSULATION WITH
TAPERED INSULATION
SCALE : 3"=1’-0"
R00F DRAIN DETAIL
EXISTING CONCRETE
ROOF SLAB
60 MIL ROOFING MEMBRANE
FULLY ADHERED
EXISTING DRAIN PIPE
SCALE : 3"=1’-0"
TYPICAL SEAM LAP DETAIL
60 MIL ROOFING MEMBRANE
FULLY ADHERED
LAP EDGE SEALANT
SPLICING CEMENT
60 MIL ROOFING MEMBRANE
FULLY ADHERED
TYP. TYP.
NEW CLAMPING RING
NEW DECK CLAMP
TAPERED INSULATION
FASTEN TO ROOF DECK
AS RECOMMENDED
TAPERED AND
RIGID INSULATION
FASTEN TO ROOF DECK
AS RECOMMENDED
NEW DRAIN TO FIT
EXISTING PIPE
ROOFING MEMBRANE
TO EXTEND UNDER
CLAMPING RING
SCALE : 1 1/2 "=1’-0"
2 X 6 PT WOOD
BLOCKING SECURE TO DECK
WITH 3/8 " FASTENERS @ 48"
O.C.
EXISTING CONC. SLAB
LAP EDGE SEALANT
BONDING
ADHESIVE
8"
60 MIL EPDM ROOF
MEMBRANE FULLY
NEW PARAPET DETAIL
EPDM MEMBRANE FLASHING
INSULATION WITH
TAPERED INSULATION
SCALE : 1 1/2 "=1’-0"
EXISTING CONC. SLAB
60 MIL EPDM ROOF
MEMBRANE FULLY
A-2
INSULATION WITH
TAPERED INSULATION
A-2 A-1
A-2 A-1 A-1
A-1 A-1
TERMINATION BAR WITH
SEALANT
2 3
4 5
LAP EDGE
SEALANT
STAINLESS STEEL
CLAMPING RING
PRE MOLDED EPDM MEMBRANE
PIPE BOOT FLASHING
STONE
BALLAST
STONE BALLAST
STONE BALLAST
STONE BALLAST
STONE BALLAST
NEW ROOF VENT DETAIL
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SHEET OF 3
| RRSGBS.pdf |
| BHRP101.pdf |
| BHDT102.pdf |
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