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Re: Seismic Bolting

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The AISC Seismic Provisions, 2002 Edition is at the printers and will be
"out" soon.  Provision Sec. 7.2a has not been changed, but the Commentary
has been revised to state "This requirement is intended for joints where
the faying surface is primarily subjected to shear.  Where the faying
surface is primarily subjected to tension or compression, e.g., in bolted
end plate connections, the requirement for preparation of faying surface
may be relaxed."

Rick Drake, SE
Fluor Daniel, Aliso Viejo, CA


                      .com                     To: <seaint(--nospam--at)>                                                                 
                      12/03/02 12:03 PM                                                                                                
                      Please respond to        cc:                                                                                     
                                               Subject:  Seismic Bolting                                                               


Refer to AISC Seismic Provisions 7.2a. which states the same requirement
and adds the following: ".....The design shear strength of bolted joints is
permitted to be calculated as that for bearing-type joints".

Thomas Hunt, S.E.
ABS Consulting

    "Dan Hernandez" <dhernandez(--nospam--at)>                                  
                                                  To:        "Seaint"      
    12/03/2002 11:52 AM                           cc:                      
    Please respond to seaint                      Subject:                 

If anybody can help I would appreciate it.

In FEMA-353 section 5.4 it states that "All bolts used in these connections
shall be installed as in slip-critical joints with Class A faying
surfaces". In regards to BUEP connections, what should be used as the shear
capacity of the bolts. Should it be the slip-critical value or the non
slip-critical value?

Dan Hernandez, EIT
Laurene & Richker, P.C.
(704) 522-0495
(704) 522-0499 f

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