21-040-LAC_Replace-Roofs-Phase1_Final-Drawings_16.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 plumbing roof plan drawing for the California State Prison, Los Angeles County (LAC) located in Lancaster, California, prepared by Hibser Yamauchi Architects and Turley Mechanical Engineering & Associates Group, Inc. The project involves roof replacement (Phase 1) for multiple housing units (Buildings 331-345, 348-3410), specifically focusing on rainwater drainage systems and scupper installations. The drawings are dated August 31, 2023, and include detailed technical specifications for roof drain sizing, equivalent area calculations, and compliance with the 2022 California Plumbing Code.
The technical drawing provides comprehensive rainwater calculation details, specifying that for Areas A1 through A15, the maximum total equivalent roof area is 2,200 square feet, requiring a minimum 3" roof drain or 10"W x 4"H scupper opening for each area. The document includes specific requirements for primary and secondary drainage systems, noting that new side wall openings meet code requirements. The project has received approval from the Office of the State Fire Marshal, with a fire and panic approval dated 10/10/23, and includes a Certified Access Specialist (CASp) number 491 #1317.
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Text version
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(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. EQA 1800 SQ.FT. EQA 2200 SQ.FT. EQA 1600 SQ.FT. EQA
1500 SQ.FT. EQA
OPEN END OF HIGH
ROOF TO LOW ROOF
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
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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 OPENINGS ARE MEET THE CODE
REQUIREMENT.
BUILDING 332 BUILDING 331
N
N
N
BUILDING 333 BUILDING 335
N
BUILDING 336 BUILDING 337 BUILDING 338 BUILDING 339 BUILDING 3310 BUILDING 341 BUILDING 342 BUILDING 343 BUILDING 344
N
N N N
N
N
BUILDING 345
N N
N
N
BUILDING 348 BUILDING 349 BUILDING 3410
N N
N
11 (E) SCUPPER CONDUCTOR HEAD
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.
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 .