07.43_AE143 - ROOF 5, 5A and 5B DETAILS - DEMOLITION AND NEW WORK.pdf
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- Solicitation number
- 36C25026B0011
About this file
This is an architectural detail drawing for a roofing replacement project at the Chalmers P. Wylie Veterans Outpatient Clinic, Columbus VAMC, prepared by the U.S. Department of Veterans Affairs. The document, labeled VA Form 08-6231, was issued as bid documents on 05/06/2025 with Addendum #01 released on 04/27/2026, which clarified that the 3.5" polystyrene insulation shall be flat rather than tapered.
The project scope encompasses demolition and replacement of roofing systems on Roofs #5, #5A, and #5B. Work requirements include removal of lightweight concrete fill down to the structural slab, surface preparation, installation of a new waterproofing system to the structural concrete deck, placement of 3.5" extruded polystyrene insulation with staggered joints, addition of a drain board, installation of 2" hydraulically pressed concrete pavers, and adjustment of roof drains to accommodate the new system. Flashing work includes removal and replacement of counter flashing at wall and parapet locations, reglet flashing installation, threshold flashing with new screw fasteners and EPDM washers, and base roof membrane installation. The existing concrete roof deck, wall construction, metal panel walls, aluminum door frames, and doors are to remain in place. The specifications note that priming of the substrate may be required and contractors must follow all specifications and manufacturer's recommendations. The drawing includes six detail sections at 1½" = 1'-0" scale illustrating parapet wall counter flashing, wall flashing, threshold flashing, roof drain, roof step-up with pavers, and roof step-up without pavers, along with a base flashing detail for two-piece sheet-metal counterflashing.
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Text version
EXISTING CONCRETE ROOF
DECK TO REMAIN
REMOVE LIGHTWEIGHT
CONCRETE FILL DOWN TO
STRUCTURAL SLAB. PREPARE
SURFACE TO RECEIVE NEW
ROOF SYSTEM.
3.5" EXTRUDED POLYSTYRENE
INSULATION - STAGGER JOINTS
WHEN USING MULTIPLE LAYERS.
DRAIN BOARD.
2" HYDRAULICALLY PRESSED
CONCRETE PAVERS.
NEW WATERPROOFING SYSTEM
TO STRUCTURAL CONCRETE
DECK.
LOWER ROOF DRAIN TO
ACCOMODATE FOR NEW ROOF
SYSTEM.
EXISTING CONCRETE ROOF
DECK TO REMAIN
REMOVE LIGHTWEIGHT
CONCRETE FILL DOWN TO
STRUCTURAL SLAB. PREPARE
SURFACE TO RECEIVE NEW
ROOF SYSTEM.
3.5" EXTRUDED POLYSTYRENE
INSULATION - STAGGER JOINTS
WHEN USING MULTIPLE LAYERS.
DRAIN BOARD.
2" HYDRAULICALLY PRESSED
CONCRETE PAVERS.
NEW WATERPROOFING SYSTEM
TO STRUCTURAL CONCRETE
DECK.
EXISTING WALL CONSTRUCTION
TO REMAIN
REMOVE AND REPLACE
COUNTER FLASHING
NEW SCREW FASTENER WITH
EPDM WASHER
REMOVE FLASHING FOR NEW
ROOF AS REQUIRED FOR
DEMOLITION - REPLACE
FLASHING; MATCH EXISTING
COLOR OF FLASHING.
EXISTING CONCRETE ROOF
DECK TO REMAIN
REMOVE LIGHTWEIGHT
CONCRETE FILL DOWN TO
STRUCTURAL SLAB. PREPARE
SURFACE TO RECEIVE NEW
ROOF SYSTEM.
3.5" EXTRUDED POLYSTYRENE
INSULATION - STAGGER JOINTS
WHEN USING MULTIPLE LAYERS.
DRAIN BOARD.
2" HYDRAULICALLY PRESSED
CONCRETE PAVERS.
NEW WATERPROOFING SYSTEM
TO STRUCTURAL CONCRETE
DECK.
BASE ROOF MEMBRANE.
EXISTING WALL / PARAPET
CONSTRUCTION TO REMAIN
REMOVE AND REPLACE
COUNTER FLASHING
REGLET FLASHING.
EXISTING CONCRETE ROOF
DECK TO REMAIN
3.5" EXTRUDED POLYSTYRENE
INSULATION - STAGGER JOINTS
WHEN USING MULTIPLE LAYERS.
DRAIN BOARD.
2" HYDRAULICALLY PRESSED
CONCRETE PAVERS.
NEW WATERPROOFING SYSTEM
TO STRUCTURAL CONCRETE
DECK.
EXISTING METAL PANEL WALL
CONSTRUCTION TO REMAIN -
BEYOND.
THRESHOLD FLASHING
NEW SCREW FASTENER WITH
EPDM WASHER
REMOVE THRESHOLD PLATE
FOR NEW ROOF SYSTEM -
REINSTALL AFTER NEW ROOF
SYSTEM IS IN PLACE.
EXISTING CONCRETE ROOF
DECK TO REMAIN
EXISTING ALUMINUM DOOR
FRAME AND DOOR TO REMAIN.
COUNTER FLASHING
BASE ROOF MEMBRANE.
3.5" EXTRUDED POLYSTYRENE
INSULATION - STAGGER JOINTS
WHEN USING MULTIPLE LAYERS.
DRAIN BOARD.
2" HYDRAULICALLY PRESSED
CONCRETE PAVERS.
NEW WATERPROOFING SYSTEM
TO STRUCTURAL CONCRETE
DECK.
EXISTING WALL / PARAPET
CONSTRUCTION TO REMAIN
REMOVE COUNTER FLASHING
FOR NEW ROOF -
REUSE/REPLACE COUNTER
FLASHING; MATCH COLOR OF
EXISTING FLASHING.
REMOVE FLASHING FOR NEW
ROOF AS REQUIRED FOR
DEMOLITION - REPLACE
FLASHING; MATCH EXISTING
COLOR OF FLASHING.
EXISTING CONCRETE ROOF
DECK TO REMAIN
REMOVE LIGHTWEIGHT
CONCRETE FILL DOWN TO
STRUCTURAL SLAB. PREPARE
SURFACE TO RECEIVE NEW
ROOF SYSTEM.
REMOVE EXISTING PVC CAP
SHEET MEMBRANE.
REMOVE INTERMEDIATE PVC
ROOF MEMBRANE LAYER
REMOVE THE EXISTING LAYERS
OF POLYISOCYANURATE
INSULATION.
NOTES:
- PRIMING OF THE SUBSTRATE MAY BE REQUIRED. FOLLOW
SPECIFICATIONS AND MANUFACTURER'S
RECOMMENDATIONS.
EXISTING WALL
THROUGH WALL FLASHING
SHEET-METAL RECEIVER WITH
REMOVABLE COUNTERFLASHING
LIQUID APPLIED TOP COAT
LIQUID APPLIED REINFORCED BASE COAT
LIQUID APPLIED REINFORCED FLASHING
EXISTING STRUCTURAL CONCRETE TO REMAIN.
BASE ROOF MEMBRANE
EXISTING CONCRETE ROOF
DECK TO REMAIN
BASE ROOF MEMBRANE.
NEW WATERPROOFING SYSTEM
TO STRUCTURAL CONCRETE
DECK.
Project Number
Building Number
Drawing Number
Project Title
Location
Issue Date Checked Drawn
Drawing Title
VA FORM 08 - 6231
A
FULLY SPRINKLERED
U.S. Department of Veterans Affairs
B
C
D
E
A
B
C
D
E
F
21 4 5 6 7 8 9 10
Phase
ARCHITECT/ENGINEER OF RECORD STAMPCONSULTANT
321 4 5 6 7 8 9 10
Date:Revisions:No.
A u to d e s k D o c s /C o lu m b u s V
A
R e p la c e R o o f o n B ld g
A /F
F E
C o lu m b u s
R e p la c e
R o o f_ B
A
A
R C
H rv t
/2
/2
:4
:0
P
M
AE143
ROOF 5, 5A & 5B DETAILS -
DEMOLITION AND NEW WORK
05/06/2025 PRQ JLF
REPLACE ROOF BUILDING 1A 757-21-101
COLUMBUS, OHIO
BID DOCUMENTS
1A
CHALMERS P. WYLIE
VETERANS
OUTPATIENT CLINIC
Approved: Columbus VAMC
1 1/2" = 1'-0"
ROOF DRAIN
ROOF #5, #5A, & #5B DETAILS - NEW ROOF SYSTEM
1 1/2" = 1'-0"
ROOF STEP UP WITH PAVERS
1 1/2" = 1'-0"
WALL FLASHING
1 1/2" = 1'-0"
PARAPET WALL COUNTER FLASHING
1 1/2" = 1'-0"
THRESHOLD FLASHING
ROOF #5s DETAILS - DEMOLISH EXISTING ROOF SYSTEM
3" = 1'-0"
EXISTING ROOF 5 - TYPICAL DEMOLITION
NTS
BASE FLASHING ROOF SYSTEM - AXXONOMETRIC DETAIL
BASE FLASHING WITH TWO-PIECE SHEET-METAL COUNTERFLASHING FULLY REINFORCED OVER CONCRETE
1 1/2" = 1'-0"
ROOF STEP UP WITHOUT PAVERS
BID DOCUMENTS 05/06/2025
1 ADDENDUM 01 04/27/2026
ADDENDUM #01 - REVISED DETAIL NOTES TO SHOW FLAT 3.5" POLYSTYRENE
INSULATION. GRAPHIC WITHIN DETAIL SHOWS TAPERED, BUT SHALL BE FLAT 3.5"
TO MATCH SPECIFICATIONS.
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