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Re: Special Pile Requirements in Zones 3 and 4

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     Dave Evans wrote:

<<FEMA-222/223 Para. 4.5.3 requires piling to be designed to withstand 
maximum imposed curvatures resulting from seismic forces for 
*free-standing piles* in poor soils.  The 1996 Blue Book has a similar 
requirement, phrased "flexure due to soil deformations."
Is this coming to the International Building Code any time soon? 
Are you geotechs "tooled up" for this?>>

Yes.  The similar and more detailed provisions are in the IBC May 1997 
Draft, Section 1807.2.24.2, applicable to Seismic Design Categories D, E, 
and F.

Rick Drake, SE
Fluor Daniel, Inc.