21-040-LAC_Replace-Roofs-Phase1_Final-Drawings_44.pdf
PDF 748 KB Posted
- 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 (Sheet A905) for a roof replacement project by the California Department of Corrections and Rehabilitation (CDCR) at California State Prison, Los Angeles County, located in Lancaster, CA. The project, labeled "Replace Roofs - Phase 1", involves comprehensive roofing modifications including installing new PVC roofing assemblies, replacing drains, and implementing various flashing and waterproofing details. The drawings are dated August 31, 2023, with final approval from the Office of the State Fire Marshal on 10/10/23, and include specific technical specifications for roof drain installations, scuppers, pitch pockets, and termination strips.
The technical drawings provide precise engineering details for roof system components, specifying materials like 22 GA galvanized sheet metal coping, PVC roofing membranes, cast iron drains (Zurn Z121 or equivalent), and specific installation techniques such as heat welding, fastening methods, and sealant applications. The project appears to be a state-funded infrastructure improvement focusing on maintaining and upgrading the roofing systems at the California State Prison facility, with meticulous attention to waterproofing, drainage, and long-term durability of the roof assemblies. The drawings include multiple scaled sections and detailed views to guide precise implementation of the roofing replacement project.
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Text version
MAIN ROOF AND OVERFLOW DRAIN
SCALE: 3" = 1'-0"
MATCH (E) VERIFY IN FIELD
(N) PVC ROOFING
ASSEMBLY, SEE DETAIL
A900
(E) LIGHT WEIGHT CONCRETE DECK
(N) 12" Ø PRIMARY ROOF DRAIN,
COATED CAST IRON (ZURN Z121 OR
EQ.)
SECURE (N) PVC ROOF MEMBRANE
REINSTALLED (E) DRAIN
(E) RAIN WATER LEADER
(N) 12" Ø ROOF
OVERFLOW DRAIN W/ 2"
DAM, COATED CAST IRON
(ZURN Z121 OR EQ.)
1'-6"
M
IN
6"
SLOPE DN
1/2":1'-0"
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-EXISTING
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
(E) SCUPPER
8"
1'-0"
(N) SCUPPER S.S.D.
ELEVATION - A
(E) CONC. PLANK
(E) CONC.
TOPPING SLAB
TOP OF (E) DECK
/2
4" M
IN
LONG SECTION
S501
(N) OVERFLOW
SCUPPER
SLOPE DN
1/2":1'-0"
10"
4"
A
SLOPE DN
M
IN
(E) STEEL DOWEL
(N) PVC ROOFING
ASSEMBLY,
SEE DETAIL
PITCH POCKET
SCALE: 3" = 1'-0"
FLASHING, HOT-AIR WELDED
16 GA METAL PITCH PAN
FASTENED W/ SMS @ 4" O.C.
PENETRATIONS
INSULATION
SECURELY
FASTENED VAPOR
RETARDER
NON-SHRINK GROUT
2" MIN
SEALANT
POCKET FILLER
(E)CONCRETE
ROOF DECK
LARGE PITCH POCKET
SCALE: 3" = 1'-0"
NOTES:
1. REMOVE ALL EXISTING FLASHING, LEAD, ETC. PIPE SURFACE MUST BE FREE OF ALL RUST, GREASE, INSUALATION, ETC.
2. POURABLE SEALER MOUNTED TO SHED WATER (MINIMUM DEPTH OF 2", REMAINDER OF POCKET MAY BE FILLED W/ NON-SHRINKING GROUT).
3. WHEN OUTSIDE DIAMETER OF PIPE EXCEEDS 18", ADDITIONAL FIELD MEMBRANE SECUREMENT REQUIRED.
4. DO NOT USE WHEN SERVICE TEMP EXCEEDS 180°F. REFER TO DETAIL X/A9.0
4" V.I.F.
(N) PVC ROOFING ASSEMBLY, SEE DETAIL
(N) 18 GA. METAL PENETRATION POCKET,
TYP.
A900
(N) 3/8"Ø EXPANSION ANCHOR W/ 2" MIN.
EMBED., TYP.
(N) POURABLE SEALER PITCH POCKET
(N) SURFACE MOUNTED COUNTER-FLASHING
FASTENED @ 8" O.C., MIN.
(N) NON-SHRINKING GROUT, TYP.
(E) ROOF DECK
(N) TERMINATION BAR FASTENED @ 8" O.C.,
TYP.
(N) BUTYL TAPE
#12 HEX HEAD SCREWS W/ INTEGRAL
NEOPRENE WASHERS, TYP.
(N) BUTYL TAPE
(E) PIPE, TYP.
4" V.I.F.
(N) CONTINUOUS BEAD OF AP OR HIGH GRADE SEALANT
(N) MULTI-PURPOSE PVC TAPE
(N) REGLET FASTENED AT 8" O.C. W/ GROMETTED
FASTENERS
(N) PVC FLASHING,
ADHERED TO (E)
PARAPET. HEAT
WELD TO ROOFING
MEMBRANE.
(N) PVC ROOFING
ASSEMBLY,
SEE DETAIL 4
A900
M
IN
(E) PRECAST CONCRETE WALL
TERMINATION STRIP
SCALE: 3" = 1'-0"
A
METAL COPING CAP
TERMINATION STRIP W/
APPROVED SEALANT
(TOOLED)
A
B
B
(N) REGLET FASTENED AT
8" O.C. W/ GROMETTED
FASTENERS W/
MULTI-PURPOSE PVC TAPE
CONTINUOUS BEAD
(E) PRECAST
CONCRETE
WALL
(N) PVC ROOFING
ASSEMBLY,
SEE DETAIL
A905
D E T A
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V1
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
File details come from the government source that posted it. Updated .