21-040-LAC_Replace-Roofs-Phase1_Final-Drawings_26.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 is a plumbing and roof plan drawing for a California State Prison project located in Lancaster, CA, prepared by Turley Mechanical Engineering & Associates Group and Hibser Yamauchi Architects for the California Department of Corrections and Rehabilitation (CDCR). The document specifically covers roof replacement work for Facility A Buildings 334 through 335, focusing on mechanical and plumbing roof plan remodeling for Phase 1 of the project. The drawing is dated August 31, 2023, and includes detailed technical specifications for rainwater drainage systems, roof drain calculations, and compliance with California Plumbing Code (CPC) requirements.
The drawing provides comprehensive technical details about roof areas, including equivalent roof area (EQA) calculations for multiple zones (Areas A1-A15 and C1-C2), with roof areas ranging from 200 to 2,200 square feet. The technical specifications outline precise requirements for roof drains, scuppers, and overflow mechanisms, specifying minimum drain sizes, opening dimensions, and drainage capacities based on 2022 CPC standards. The document includes approval stamps from the Office of the State Fire Marshal, indicating the plans have been reviewed and conditionally approved for fire and panic safety, with a final approval subject to field inspection.
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Text version
3 1 1.8 2 6 4 5 7 8 9 1110
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LOW ROOF,
SEE
B/MPB302
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11 11 11
10 10 10
(AREA A1)(AREA A2)(AREA A3) (AREA A4)(AREA A5)
(AREA A15)
1150 SQ.FT. EQA
(AREA A14)(AREA A13) (AREA A12)(AREA A11)
650 SQ.FT.
EQA
(AREA A6)
250 SQ.FT.
EQA
(AREA A7)
250 SQ.FT.
EQA
(AREA A8)
200 SQ.FT.
EQA
(AREA A9)
450 SQ.FT.
EQA
(AREA A10)
10 10 10 10
1800 SQ.FT. EQA2200 SQ.FT. EQA 1600 SQ.FT. EQA1500 SQ.FT. EQA
1150 SQ.FT. EQA1800 SQ.FT. EQA 2200 SQ.FT. EQA 1600 SQ.FT. EQA
1500 SQ.FT. EQA
OPEN END OF HIGH
ROOF TO LOW ROOF
G.3
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K.7
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(AREA C1)
400 SQ.FT. EQA
(AREA C2)
450 SQ.FT. EQA
118 9 10
Project Engineer:
U R L E YT M E C H A N IC A L
E N G I N E E R I N G
G R O U P, I N C.& ASSOCIATES
(916) 325-1065
FAX: (916) 325-1075
Email: office@turleymech.com
2431 Capitol Avenue
Sacramento, CA 95816
Project Manager:
GYang
Job Number:
Project Drafter: Login:
Plot Date: Aug 25, 2023 - 4:07pm
22107-PH1JT
JT
SHEET NUMBER
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REMODEL KEY NOTES
#### EQA
NOTE
EQUIVALENT AREA OF ROOF AREA PLUS AREA OF VERTICAL
WALLS, PER CPC 1103.4, 2019.
PER US WEATHER BUREAU TECHNICAL PAPER NO.40 CHART 14:
100-YEAR 1-HOUR RAINFALL (INCH), LOCAL RAIN WATER FALL RATE
IS BETWEEN 0.5"/HR AND 1.0"/HR. WHILE CONSIDERING A SAFETY
FACTOR, 2"/HR RAINFALL IS USED IN THIS PROJECT.
PER 2022 CPC TABLE 1103.1 AND TABLE 1103.2, MAX PROTECTED
ROOF AREA OF PIPES ARE SHOWING BELOW:
PIPING MAX PROTECTED ROOF AREA (SQ.FT.)
SIZE HORIZONTAL SLOPE VERTICAL PIPING
(INCH) 1
8"/LF 1
4"/LF 1
2"/LF ROOF DRAIN, LEADER
2" - - - 1440 3" 1,644 2,320 3,288 4,400 4" 3,760 5,300 7,520 9,200 5" 6,680 9,440 13,360 17,300 6" 10,700 15,100 21,400 27,000
PER 2022 CPC 1101.12.2.1, WHEN SCUPPER OR SIDE OPENING IS
USED FOR OVERFLOW, HEIGHT OF OPENING SHALL BE NO LESS
THAN 4", AND WIDTH SHALL BE NO LESS THAN CIRCUMFERENCE OF
THE ROOF DRAIN REQUIRED FOR THE AREA SERVED.
AN ALTERNATIVE MEANS IS USING SCUPPER INSTEAD OF THE ROOF
DRAIN FOR THE PRIMARY RAINWATER DRAINAGE. ALTERNATIVE
MEANS IS UNDER THE AGREEMENT WITH OF CDCR PROJECT
MANAGER. IN THIS CASE, HEIGHT OF OPENING SHALL BE NO LESS
THAN 4", AND WIDTH SHALL BE NO LESS THAN CIRCUMFERENCE OF
THE ROOF DRAIN REQUIRED FOR THE AREA SERVED. WHERE ROOF
DRAIN AND SCUPPER ARE COMBINED, THE HEIGHT OF OPENING
MUST BE A MINIMUM OF TWICE THE REQUIRED HEIGHT (MIN OF 8").
THE ABOVE DATA ARE ONLY MINIMUM REQUIREMENT OF DRAINS
AND PIPES. THEY CAN BE OVERSIZED IN THE PROJECT.
RAIN WATER CALCULATION
FOR AREA A1 THRU A15, MAX TOTAL EQUIVALENT ROOF AREA IS
2,200 SQ.FT. A MIN 3" ROOF DRAIN OR MIN 10"Wx4"H SCUPPER
OPENING IS SUFFICIENT TO SUPPORT EACH AREA. MIN OVERFLOW
SIDE WALL OPENING IS 10"Wx4"H. THE NEW PRIMARY AND
SECONDARY SIDE WALL OPENING ARE MEET THE CODE
REQUIREMENT.
FOR AREA C1 AND C2, MAX TOTAL EQUIVALENT ROOF AREA IS 450
SQ.FT. MIN 3" ROOF DRAIN AND 3" OVERFLOW DRAIN ARE
SUFFICIENT TO SERVE THE AREA.
MPB302
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01 (N) ROOF DRAIN RD-1 AND OVERFLOW DRAIN OFL-1. (N)DRAIN SIZE MATCH
(E) AND MIN 3". REFER TO ARCHITECTURAL DETAIL 12/A905.
11 (E) SCUPPER CONDUCTOR HEAD, MODIFY AS NEEDED FOR NEW SCUPPER
OPENING LOCATION
12 (N) SCUPPER CONDUCTOR HEAD, SIZE MATCH OTHER (E) CONDUCTOR HEAD
ON THE SAME WALL. INSTALLATION DETAILS SEE 4/S501.
10 (E) OR (N) PRIMARY SCUPPER AND (N)OVERFLOW SCUPPER FOR LOW ROOF.
EACH SCUPPER OPENING SHALL BE MIN 10"WIDE x 4"HIGH. THE LOCATION
OF (N) PRIMARY SCUPPER SHALL MATCH (E) OR (N)SCUPPER CONDUCTORS.
SEE ARCHITECTURAL DETAIL 28/A905.
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
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