21-040-LAC_Replace-Roofs-Phase1_Final-Drawings_13.pdf
PDF 616 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 structural roof framing plan for a California Department of Corrections and Rehabilitation (CDCR) project located at California State Prison, Los Angeles County in Lancaster, CA. The project, identified as Job Number 21-040 Phase 1, involves roof replacement for the 270 Housing Unit, with the final drawings dated August 31, 2023. The plan includes detailed specifications for roof framing, wind pressure analysis, and construction sequencing, with specific focus on removing existing roofing, inspecting structural elements, and installing new roofing materials.
The drawings provide technical details for roof replacement, including wind uplift values categorized into three zones (field at 60 PSF, perimeter at 75 PSF, and corners at 105 PSF), with a safety factor of 2. The plan outlines specific construction notes regarding concrete and metal deck deterioration criteria, with guidelines for identifying and addressing excessive deterioration of structural elements. The project has received approvals from the Office of the State Fire Marshal (approval date 10/10/23) and includes a Certified Access Specialist (CASp) number, indicating compliance with accessibility standards. The architectural and engineering work was completed by Hibser Yamauchi Architects, Inc. in Davis, California.
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Text version
7.3
7.3
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D D
E E
F F
G G
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NOTES:
1. CONSTRUCTION SEQUENCE
A. REMOVE EXISTING ROOFING PER ARCHITECTURAL DRAWINGS.
B. INSPECT EXISTING STRUCTURAL ELEMENTS FOR DETERIORATION.
C. IF CONCRETE SUBSTRATE SHOWS EXCESSIVE DETERIORATION REPAIR
PER 1/S501 OR NOTIFY THE ARCHITECT AND STRUCTURAL ENGINEER
FOR FURTHER DIRECTION. FURTHER REPAIRS TO ANY DETERIORATION OR
SPALLING WILL BE EVALUATED AND DETAILED ON A CASE-BY CASE BASIS
DEPENDING ON THE TYPE AND EXTENT, OR THE REPAIRS NEEDED.
D. PLACE NEW ROOFING PER ARCHITECTURAL DRAWINGS.
2. SEE KEY PLAN 1/SA201 FOR ROOFING WIND UPLIFT VALUES.
3. INDICATES EXTENSION OF (E) PARAPET, SEE
4. EXCESSIVE DETERIORATION:
A. FOR CONCRETE EXCESSIVE DETERIORATION IS DEFINED AS HAVING
SPALLED SECTIONS OF CONCRETE LARGER THAN 3" ACROSS, OR HAVING
CRACKING 1/8" WIDE x 3' LONG OR GREATER.
B. FOR METAL DECKING EXCESSIVE DETERIORATION IS DEFINED AS HAVING
FLAKING RUST WHERE THE REMAINING THICKNESS IS LESS THAN 90% OF
ORIGINAL DECK THICKNESS, OVER AN AREA GREATER THAN 1 SQ FOOT.
C. FOR STRUCTURAL STEEL EXCESSIVE DETERIORATION IS DEFINED AS
HAVING FLAKING RUST WHERE THE REMAINING THICKNESS IS LESS THAN
95% OF ORIGINAL MEMBER THICKNESS.
1. WIND UPLIFT VALUES INCLUDE A SAFETY FACTOR OF 2.
LEGEND:
ZONE 1 - FIELD (60 PSF)
ZONE 2 - PERIMETER (75 PSF)
ZONE 3 - CORNERS (105 PSF)
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SACRAMENTO, CA 95811
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CALIFORNIA DEPARTMENT OF
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ACCESS COMPLIANCE REVIEW
APPROVAL OF THIS PLAN DOES NOT
AUTHORIZE OR APPROVE ANY OMISSION OR
DEVIATION FROM THE APPLICABLE REGULATIONS.
TRACKING NUMBER:___________________
DATE:____________________________
REVIEWER:_________________________
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SSSSAAAA222200001 111
ROOF FRAMING PLAN - TYP 270 HOUSING UNIT
0' 4'-0" 8'-0" 16'-0" 32'-0" (1/8" = 1')
331/341 332/342 333/343 335/336/345 344 339/349 337 338/348 3310/3410
DETAIL
SA201
1/16" = 1'-0"3
WIND PRESSURE PLAN
WIND PRESSURE PLAN SA201
0' 8' 16' 32' 64'
SA201
1/2" = 1'-0"2STAIR CAGE PARTIAL ROOF PLAN
0' 1'-0" 2'-0" 4'-0" 8'-0"
08/24/2023
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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