Best Practices for Project Management, Design, and Construction of ...

Appendix 3-A
Recommended Graphics and Symbols for Rated Walls
General Rated Wall Graphics
The minimum designation of rated walls that should be provided on all plans, including
Architectural Floor Plans, Mechanical, Plumbing, and Electrical Distribution Plans should be
similar to the following:
One-Hour Rating
Two-Hour Rating
Three-Hour Rating
Four-Hour Rating
Fire Barrier Walls for Separation of Spaces such as Atriums, Suites, or Fire Partitions required for
Tenant Space Separations may use a special graphic designation to distinguish its special use.
Such graphics should be clearly identified in a graphic legend on the drawings.
One-Hour Separation Wall
Special Rated Wall Designations
For Fire Barrier walls which have special functions that need to identified in plans, the following
may be used:
Horizontal Exit or Exit Passage
(Two-Hour)
X
X
Smoke Partitions which enclose Elevator Lobbies and Smoke Barrier Walls which separate
Smoke Compartments should be use a unique graphic:
Non-rated Smoke Partition
One-Hour Smoke Barrier
S
1S
S
1S
Fire Walls (CBC 706) where separations create Separate Buildings and have limited, or no
penetrations, and must be continuous from exterior wall to exterior wall should use the following
graphic:
Two-Hour Fire Wall
Three-Hour Fire Wall
Four-Hour Fire Wall
2FW
3FW
4FW
2FW
3FW
4FW
(OSHPD Best Practices) Page 56 DRAFT FINAL, Sept. 2011