21-040-LAC_Replace-Roofs-Phase1_Final-Drawings_39.pdf
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- Attached to
- FPCM-LAC-I001104-M035-RS
- Solicitation number
- 0000036277
- Issued by
- Los Angeles County, California
About this file
This document is a detailed architectural drawing set from the California Department of Corrections and Rehabilitation (CDCR) for the Replace Roofs - Phase 1 project at California State Prison, Los Angeles County (LAC), located in Lancaster, California. The drawing set, dated August 31, 2023, and approved by the Office of the State Fire Marshal on 10/10/23, provides comprehensive technical specifications for roof replacement, including raised parapet/curb extensions, single-ply roof assemblies, cricket assemblies, scupper installations, and walkpad details. The drawings specify the use of new PVC roofing membrane, rigid insulation, protection boards, and associated metal components for both low and high roof areas.
The technical drawings indicate a systematic approach to roof replacement, with detailed cross-sections showing layered roofing components, slope specifications (typically 1/2":1'-0"), and specific materials like siliconized gypsum sheathing, fiberglass facer matting, and galvanized sheet metal components. The project involves replacing existing roof systems while maintaining structural integrity, with particular attention to water drainage, insulation, and weatherproofing. The drawings include precise measurements, material specifications, and installation guidelines for various roof elements, suggesting a comprehensive renovation of the facility's roofing infrastructure.
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Text version
RAISED PARAPET/CURB EXTENSION
SCALE: 1 1/2" = 1'-0"
21'-6"
T.O. (E) PRECAST CONCRETE WALL
(N) PVC ROOFING
ASSEMBLY,
SEE DETAIL
A900
(E) PRECAST CONCRETE WALL
(N) TERMINATION BAR W/
FASTENER BY ROOFING MFR.
(N) PVC FLASHING TO WRAP OVER
PARAPET
HEAT WELD PVC FLASHING
TO ROOF MEMBRANE
8"
(E) METAL DECK W/
LIGHT WEIGHT
CONCRETE
TOPPING
S501
A902
(N) 22 GA G.S.M. COPING
CAP. SEE DETAIL
(N) CMU PARAPET
EXTENSION, SSD
M
IN
T.O. (N) PARAPET EXTENSION
(N) STEEL DOWEL
SINGLE PLY ROOF ASSEMBLY
SCALE: 3" = 1'-0"
(N) 1/2" PROTECTION
BOARD. BOARD TO BE
SILICONIZED GYP.
SHEATHING W/
FIBERGLASS FACER
MATT., FULLY ADHERED
(N) PVC MEMBRANELAP MEM. PER
MFR. REQ'S.
(N) 6" MIN. (R-30)
RIGID INSULATION,
EACH LAYER FULLY
ADHERED
(N) ADHESIVE PER
ROOFING MFR.
(E) CONC. ROOF DECK
(1988 UBC 43-C,
ITEM 1-1.1)
(N) PVC MEMBRANE
LAP MEM. PER MFR.
REQ'S.
(N) 6" MIN. (R-30)
RIGID INSULATION,
EACH LAYER FULLY
ADHERED
(N) ADHESIVE PER
ROOFING MFR.
(E) METAL DECK
WITH CONCRETE
TOPPING. (U.L. #D902)
A
B
(N) 1/2" PROTECTION
BOARD. BOARD TO BE
SILICONIZED GYP.
SHEATHING W/
FIBERGLASS FACER
MATT., FULLY ADHERED
OCCURS ON LOW ROOF
OCCURS ON HIGH ROOF
(N) VAPOR
RETARDANT
(N) STACKED TAPERED RIGID
INSULATION BOARD - FULLY
ADHERED
(N) PVC ROOFING SLOPED
TO DRAIN, SEE DETAILS THIS
SHEET
(N) 1/2" RIGID SILICONIZED
GYPSUM-SHEATHING BOARD,
WITH FIBERGLASS FACER.
ADHERE TO INSULATION
(N) PVC ROOFING
MEMBRANE, ADHERE TO
PROTECTION BOARD
1/2":1'-0"
S
LO
P E
1/2":1'-0"
SLOPE
1/2":1'-0"
S
LO
P E
1/2":1'-0"
SLOPE
1/2":1'-0"
S
LO
P E
1/2":1'-0"
SLOPE
NOTE: CRICKET RIDGE IS HORIZONTAL, TYP.
CRICKET ASSEMBLY
SCALE: 1/2" = 1'-0"
PVC UNIVERSAL
CORNERS
PVC ROOFING
ASSEMBLY,
SEE
PVC COATED
GALVANIZED SHEET
METAL (24 GA. MIN.)
PVC COVER STRIP
OVER COATED
METAL
SCUPPER ISOMETRIC
SCALE: N.T.S.
FIRE RETARDANT
TREATED WOOD
NAILER
PVC FLASHING
MEMBRANE,
SEE DETAIL
12"
12"
M
IN
4" MIN
WALKPAD INSTALLATION
SCALE: N.T.S.
(N) PVC WALKPAD HEAT WELDED IN PLACE ALL 4
SIDES. DO NOT CROSS FIELD SEAMS. START AND
STOP WALK PAD INSTALLATION 2" FROM FIELD
SEAM.
(N) PVC FIELD SEAM
(N) PVC WALK PAD
(N) PVC FIELD
MEMBRANE
(N) HEAT WELDED OUTSIDE
EDGE
(N) 12" PROTECTION BOARD
(N) 6" MIN. RIGID INSULATION
NOTES:
1. (N) 22 GA. GALV. S.M. COPING & REGLETS TO
BE PAINTED. COLORS TO MATCH EXISTING.
3. SOLDER ALL JOINTS.
SCUPPER AT LOWER ROOF-NEW
SCALE: 3" = 1'-0"
SLOPE DN
1/2":1'-0"
(N) HEAT WELDED LAPS
PER MANUFACTURER
REQUIREMENTS
(N) PVC ROOFING
ASSEMBLY, SEE DETAIL
A900 (N) HEXAGON HEAD,
SLOTTED DRIVE, SELF-TAPPING
CONCRETE SCREW
W/ 1-1/2" MIN EMBED.,
@ 24" O.C., TYP.
(N) BACKER ROD AIR SEAL
ON ALL FOUR FLANGES
(N) ADHESIVE COLD APPLIED MEMBRANE
(N) 22 GA GALV. S.M. COPING CAP, SEE DETAIL
A902
(E) PRECAST CONCRETE
WALL TO REMAIN
(E) CONCRETE PLANK W/
CONCRETE TOPPING
18'-6"
T.O. (E) PRECAST
CONCRETE WALL
(N) SCUPPER TO MATCH
(E) EXISTING SCUPPER
8"
(N) SCUPPER S.S.D.
ELEVATION - B
(E) CONC. PLANK
(E) CONC.
TOPPING SLAB
TOP OF (E) DECK
/2
M
IN
A
LONG SECTION - C
S501
(N) OVERFLOW
SCUPPER
SLOPE DN
1/2":1'-0"
1'-0" 3" 1/2"
1'-6"
3" 1/2"
/2
/2
ELEVATION - A C
(N) OVERFLOW SCUPPER
TOP OF PRIMARY SCUPPER
10"
4"
B
SLOPE DN
4"
M
IN
(N) STEEL DOWEL, SSD
SLOPE DN
(N) HEAT WELDED LAPS
PER MANUFACTURER
REQUIREMENTS
4"
10"
CONDUIT/PIPE SUPPORT
SCALE: NTS
USE APPROPRIATE COMPATIBLE
COMPONENTS CLAMP W/ BOLT AND
NUTS PER MANUF.
(N) PVC ROOFING
ASSEMBLY, SEE DETAIL
RUBBER BASE PIPE SUPPORTS
(DURA-BLOK #DB10 BY EATON, OR
EQUAL)
(E) PIPE/CONDUIT, SIZE VARIES
1" GALVANIZED STEEL CHANNEL
(E) CONCRETE ROOF
DECK
(N) PVC WALKPAD HEAT
WELDED IN PLACE, SEE
DETAIL
A900
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OFFICE OF THE STATE FIRE MARSHAL
shall be available on the project site at all times.
10/10/23
APPROVED FIRE AND PANIC ONLY
Approval of this plan does not authorize or approve any omission or deviation from applicable regulations. Final approval is subject to field inspection. One set of approved plans
23-0002
11/20/2023 CASp-491 #1317
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