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RE: Concrete Fire protection

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This link should help:


It’s a post 9/11 version of the old CRSI “Fire ratings in concrete construction” paper.




David L. Fisher SE PE

Senior Principal



372 West Ontario

Chicago 60610



312.573.1726 fax


312.622.0409 mobile


From: Paul Feather [mailto:pfeather(--nospam--at)]
Sent: Wednesday, January 11, 2006 7:05 PM
To: SEAOC List
Subject: Concrete Fire protection


Hello all,


Please assist me with my interpretation of fire rating requirements.  For a concrete slab to provide a four hour separation between a garage and the occupied spaces above, is the minimum coverage requirement for the bottom of the slab, or both top and bottom?


My interpretation was that since the separation is required for vehicle fire upward, the top reinforcement cover would be unaffected.


Does anyone have a good reference for this topic?