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Re: Fireproofing

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A W24x55 beam has about 5.53 square feet of surface area per foot of length
(AISC Case A).  It takes 2 inches of concrete (25 psf) to get the fire
rating.  That works out to be about 138 pounds of concrete per foot of
W24x55 beam length.

Rick Drake, SE


                      "Paul Feather"                                                                                                   
                      <pfeather@SE-Soluti      To: <seaint(--nospam--at)>                                                                 
                      08/27/03 07:38 AM        cc:                                                                                     
                      Please respond to                                                                                                
                      seaint                   Subject:  Re: Fireproofing                                                              

practically zero.  If the spray on fire protection is more than two or
three pounds per linear foot on a 24" beam I would be surprised.  Typically
spray on is accounted for in the miscellaneous loading.  If the spray on is
a factor in the beam design, you are cutting things way too close. :-)

Paul Feather PE, SE
 ----- Original Message -----
 From: Stuart, Matthew
 To: 'seaint(--nospam--at)'
 Sent: Wednesday, August 27, 2003 5:57 AM
 Subject: Fireproofing

 Anybody got a good rule of thumb uniform dead load for sprayed on
 fireproofing of steel beams?

 D. Matthew Stuart, P.E., S.E., P.Eng.
 Senior Project Manager
 Schoor DePalma Engineers and Consultants
 Manalapan Structural Department
 200 State Highway Nine
 Manalapan, NJ 07726
 732-577-9000 (Ext. 1275)
 908-309-8657 (Cell)
 732 -431-9428 (Fax)

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