21-040-LAC_Replace-Roofs-Phase1_Final-Drawings_41.pdf
PDF 1 MB Posted
- Attached to
- FPCM-LAC-I001104-M035-RS
- Solicitation number
- 0000036277
- Issued by
- Los Angeles County, California
About this file
The document is a detailed architectural drawing set (Sheet A902) for roof replacement at California State Prison, Los Angeles County (LAC), prepared by the California Department of Corrections and Rehabilitation's Facility Planning, Construction and Management Division. The project, identified as "Replace Roofs - Phase 1", is located at 44750 60th Street West in Lancaster, California, and involves comprehensive roofing system modifications including roof hatch installations, parapet extensions, metal coping details, penetration flashings, scupper installations, and crossover bridge specifications. The drawings are dated August 31, 2023, with final approval from the Office of the State Fire Marshal received on 10/10/23 and 11/20/2023.
The technical drawings provide extensive engineering details for roof system upgrades, featuring PVC roofing assemblies, metal coping caps, flashing techniques, ladder extensions, and specific installation requirements for various roof components. The drawings include precise measurements, material specifications (such as 22 GA galvanized steel, PVC membranes, and stainless steel fasteners), and technical notes on installation methods, with particular attention to waterproofing, thermal performance, and structural integrity. The project appears to be a state-funded infrastructure improvement initiative targeting specific roof rehabilitation needs at the correctional facility, with meticulous engineering standards to ensure long-term performance and compliance with building and safety regulations.
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Text version
(N) 1" INSULATED
MECHANICAL CURB
ROOF HATCH SECTION
SCALE� 1 1/2" 1 -0"
A900
(N) REGLET FLASHING
(N) SELF-ADHERED,
FLEX-FLASHING AND
UNDERLAYMENT, TYP.
(N) HOLD OPEN ARM W/
NYLON ROLLER PER MFG
(N) LIFTING MECHANISM
PER MFG.
(N) PVC ROOFING
ASSEMBLY, SEE DETAIL
(E) FIXED ACCESS
LADDER. EXTEND AS
NECESSARY.
(E) METAL DECK W/
CONCRETE FILL
(E) ROOF HATCH
(N) METAL STUD
3-5/8" X 18 GA
@ 16" O.C.
(N) 3/8" Ø HILTI KH-EZ SCREW
ANCHORS, 2" EMBED AT 16" CC
(MIN 3 PER SIDE); MIN 1-1/2" EDGE
DISTANCE.
(N) METAL TRACK
3-5/8" X 18 GA
#10 SCREW S, TYP.
18 GA GALVANIZED SHEET
STEEL AT PERIMETER TYP.
FASTEN WITH #10 SCREW S,
@ 6" CC EACH CONTACT
LADDER
EXTENSION
SEE DETAIL
(N) FRAME W/
CAPFLASHING
CORNERS FULL
WELDED
(N) LOCK STRIKE
PADLOCK HASP
MET. STUD NAILER
M
IN
ROOF HATCH CURB
SCALE� 3" 1 -0" ROOF HATCH CURB
(N) 1" INSULATED
MECHANICAL CURB
(N) SELF-ADHERED
FLEX-FLASHING
UNDERLAYMENT,
TYP.
(N) METAL FRAMING
SLOPE DN
1/2" 1 -0"
8"
PENETRATION FLASHING
SCALE� 3" 1 -0"
4"
TYP.
4"
TYP. 2
T
Y P
M
IN
(N) S.S. DRAWBAND, TYP.
(N) SEALANT, TYP.
(N) SM. RAIN COLLAR, TYP.
CONDUIT, VENT PIPE OR POST PENETRATION
(N) PVC 60MIL FLASHING
(N) LAP OR LIQUID SEALANT PER MFR. REQ S.
(N) PVC ROOFING ASSEMBLY, SEE
A900
EXTEND (E) PIPE TO MIN 12" ABOVE ROOF FINISH MEMBRANE.
ONE-PIECE BOOT FLASHING
SCALE� 3" 1 -0"
M
IN
(N) EXTENSION CONDUIT OR VENT PIPE, SIZE TO
MATCH (E)
(N) CONTINUOUS BEAD OF SEALANT, SEE SPEC 07 90 00
(N) STAINLESS STEEL CLAMPING RING
(N) PVC, ONE-PIECE BOOT, HEAT
WELDED PER MFR. REQUIREMENTS
(N) PVC ROOFING ASSEMBLY, SEE DETAIL
(E) CONCRETE DECK
A900
NOTES�
1. DO NOT CUT PREFABRICATED BOOT. IT MUST BE PULLED OVER
CONDUIT / VENT PIPE / POST.
2. PREFABRICATED BOOTS, AND MUST BE USED WHENEVER
POSSIBLE TO FLASH PENETRATIONS 1" TO 8" IN DIAMETER
3. IF PENETRATION DOESN T ALLOW FOR PIPE BOOT
INSTALLATION, USE ALTERNATE FLASHING METHOD. SEE DETAIL
EXTEND (E) PIPE TO MIN 12" ABOVE
ROOF FINISH MEMBRANE
(N) PIPE CLAMP
(E) PIPE TO REMAIN
PROVIDE (N) HILTI
FS-ONE MAX (OR OF
EQUAL) FIRESTOP
SEALANT AS NEEDED,
VIF, INSTALL PER MFR
REQUIREMENTS.
(N) LAP OR LIQUID SEALANT PER MFR. REQ S.
4"
LAP -OINT
(N) 22 GA. G.S.M. COPING CAP.
(N) METAL TRACK
(N) 3/8" Ø HILTI KWIK BOLT 3 SS
(COUNTERSUNK) EXPANSION ANCHOR
W/ 2" MIN. EMBED @ 4 -0" O.C. TYP.
(N) CMU PARAPET WALL
EXTENSION
S
LO
P E D
N
(N) PVC FLASHING TO WRAP
OVER PARAPET.
10 -0" MAX.
TO NEXT LAP -OINT
METAL COPING LAP -OINT DETAIL
SCALE� 3 -0" 1 -0"
NOTES�
1. (N) 22 GA. S.M. COPING REGLETS
TO BE PRE-FINISHED W/ KYNAR.
2. COLORS TO MATCH EXISTING.
3. SOLDER ALL -OINTS.
SLOPE DN
(N) 22 GA G.S.M. COPING CAP.
(N) 8" [ 18GA DBL STUD
(800S162-43) W/ #10 SMS @ 12" CC
EA FLANGE� 4" DIA HOLE AS
REQUIRED FOR BOLT ACCESS
(N) ADHESIVE COLD APPLIED
MEMBRANE LAPPED OVER TOP
PLATE AND 2" DOWN VERTICAL
SURFACES, TYP.
(N) 3/8" Ø HILTI KB-TZ2 SS
(COUNTERSUNK) EXPANSION
ANCHOR W/ 2" MIN. EMBED
@ 4 -0" O.C. TYP.
(N) CONT. CAULKING TYP.
(N) PVC FLASHING TO WRAP
OVER PARAPET.
NOTE�
1. FOR METAL COPING
LAP -OINT, SEE DETAIL
METAL CLEAT, 24 GA MIN
METAL CLEAT, 24 GA MIN
1/8 2" @ 36" CC
CONDITION 1 -
METAL COPING ON (N) CMU EXTENSION
SLOPE DN
(N) 22 GA G.S.M. COPING CAP.
(N) 8" [ 18GA DBL STUD
(800S162-43) W/ #10 SMS @ 12" CC
EA FLANGE� 4" DIA HOLE AS
REQUIRED FOR BOLT ACCESS
(N) ADHESIVE COLD APPLIED
MEMBRANE LAPPED OVER TOP
PLATE AND 2" DOWN VERTICAL
SURFACES, TYP.
(N) 3/8" Ø HILTI KB-TZ2 SS
(COUNTERSUNK) EXPANSION
ANCHOR W/ 2" MIN. EMBED
@ 4 -0" O.C. TYP.
(N) CONT. CAULKING TYP.
(N) PVC FLASHING TO WRAP
OVER PARAPET.
METAL COPING AT PARAPET EXTENSION
SCALE� 3 -0" 1 -0"
NOTE�
1. FOR METAL COPING
LAP -OINT, SEE DETAIL
(N) CMU PARAPET EXTENSION.
METAL CLEAT, 24 GA MIN
METAL CLEAT, 24 GA MIN
(N) CEMENT
PLASTER.
FINISH
AND
COLOR
TO MATCH
(E) WALL.
1/8 2" @ 36" CC
CONDITION 2 -
METAL COPING ON (E) CONCRETE PANEL
METAL COPING AT (E) PARAPET
SCALE� 3 -0" 1 -0"
NOTES�
1. (N) 22 GA. GALV. S.M. COPING REGLETS TO
BE PAINTED. COLORS TO MATCH EXISTING.
3. SOLDER ALL -OINTS.
OVERFLOW SCUPPER AT LOWER ROOF
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
18 -6"
T.O. (E) PRECAST
CONCRETE WALL
8"
(E) CONC.
TOPPING SLAB
/4
(N) PVC COATED 22 GA.
OVERFLOW SCUPPER.
CROSS OVER BRIDGE
SCALE� 1" 1 -0"
A900
(N) PVC ROOFING ASSEMBLY, SEE DETAIL
M
IN
M
A X
(N) FLASHING
(N) STEEL PLATE, SSD
PIPE SIZE, DUTY, MOUNTING HEIGHTS
AND SUPPORTS PER PLAN, SMD AND SED.
1 -8" MIN
18-GA, 12" X 2.5" GALVANIZED STEEL SKID RESISTANT
SURFACE STAIR LANDING, BAR GRATING TYPE WB-4, W/ 1"
HEIGHT BAR GRATING.
V A
R
IE
S V
IF
(E) STRUCTURAL METAL ROOF DECK WITH CONCRETE FILL
A902
1 1/4" DIA. SCHEDULE 40 GALVANIZED STEEL PIPE RAIL.
TUBULAR STEEL PIPE SUPPORT, TYP, SSD
M A
X
WELDED TO POST, TYP, SSD
M
IN
1 -0"
1 -0" 1 -8" 1 -0"
-0
C
L E
A R
1 1/4" DIA. SCHEDULE 40
GALVANIZED STEEL PIPE OR
APPROVED EQUAL HANDRAIL
18-GA, 12" X 2.5" GALVANIZED STEEL
SKID RESISTANT SURFACE STAIR
LANDING, BAR GRATING TYPE WB-4,
W/ 1" HEIGHT BAR GRATING.
18-GA, 12" X 2.5" GALVANIZED
STEEL SKID RESISTANT
SURFACE STAIR TREAD, W/ 1"
HEIGHT GRIP STRUT GRATING.
TUBULAR STEEL PIPE
SUPPORT, TYP, SSD
PLAN
S501
S501
S501
1 1/2" DIA. SCHEDULE 40 GALVANIZED STEEL PIPE POST.
S501
M A
X
LADDER EXTENSION DETAIL
SCALE� 3" 1 -0"
(N) PVC
ROOFING
ASSEMBLY,
SEE DETAIL
(E) FIXED ACCESS
LADDER TO REMAIN.
EXTEND AS REQUIRED.
(E) METAL DECK W/
CONCRETE FILL
ROOF HATCH
(N) LADDER EXTENSION
TO MATCH EXISTING
2" MIN
5/16
12 -0" ELEVATION MARK
GRIND SMOOTH ALL
CORNERS AND EDGES
AND ALL WELDS
(N) LADDER RUNG TO
MATCH EXISTING
M
A X
(E) LADDER RUNG
TERMINATION STRIP
SCALE� 3" 1 -0"
(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
8" MIN.
(N) REGLET FASTENED
AT 8" O.C.W/ GROMETTED
FASTENERS
M
IN
(E) PRECAST CONCRETE WALL PVC FLASHING STRIP,
HOT-AIR WELDED IN PLACE
4"
COPING CAP TERMINATION ISOMETRIC
SCALE� NTS
METAL COPING CAP
END CAP
(E) PRECAST WALL,
WITHOUT COPING CAP,
WHERE OCCUR.
4"
TERMINATION
STRIP
APPROVED
SEALANT (TOOLED)
A902
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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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