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RE: Seismic Design of Bridge Foundation

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I haven't designed bridges in about 15 years, but, the last time I did, I
designed foundations for the LARGER of the two.

Regards,

Bill Allen, S.E. (CA #2607)
ALLEN DESIGNS
Consulting Structural Engineers
Laguna Niguel, CA
http://www.AllenDesigns.com
V (949) 365-5696
F (949) 249-2297

||-----Original Message-----
||From: Mete BAYKIR [mailto:mete(--nospam--at)yp.yukselproje.com.tr]
||Sent: Thursday, August 17, 2000 7:52 AM
||To: seaint(--nospam--at)seaint.org
||Subject: Seismic Design of Bridge Foundation
||
||
||I have a question on the seismic design of bridge foundation.
||According to AASHTO for SPC  C & D, the "R" (reduction
||factor) is taken as 1
||and the elastic
||effects are calculated to find the foundation design forces.
||The plastic
||hinging values are also computed .
||Which one of these will be used for the foundation design?
||The smaller of
||these two or what? I checked out AASHTO but I could not find
||a clear answer
||for that question.I hope somebody is going to help me .
||Thanx. :)
||
||Mete
||
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