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chaubeyskc SEFI Member
Joined: 23 Jul 2010 Posts: 3
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Posted: Fri Jan 03, 2014 4:25 am Post subject: Consideration of Seismic Force of Raft on pile |
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Dear Friends,<xml><o></o>
<o> </o>
I need your expert opinion on following<o></o>
<o> </o>
1) Whether self-weight of raft resting on piles should be considered in seismic weight or not? Since <o></o>
2) If answer is yes then What should be the R factor for raft with piles.<o></o>
3) Any relevant reference (code applicable in our case is ACI-08/UBC97)<o></o>
Super structure is steel framed building for turbine hall, the raft top is at +0.3m above ground and about 1.8m deep.<o></o>
Since our piles are governed by horizontal reaction coming out of seismic load only when considering the self-weight of raft in seismic weight.<o></o> |
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VPandya General Sponsor
Joined: 09 Nov 2009 Posts: 842
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Posted: Fri Jan 03, 2014 8:36 am Post subject: UBC 1997 can be a Design Code anymore. |
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Left Blank.
Last edited by VPandya on Fri Jan 03, 2014 8:42 am; edited 1 time in total |
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VPandya General Sponsor
Joined: 09 Nov 2009 Posts: 842
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Posted: Fri Jan 03, 2014 8:41 am Post subject: Re: UBC 1997 can not be a Design Code anymore. |
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Left Blank.
Last edited by VPandya on Fri Jan 03, 2014 3:15 pm; edited 1 time in total |
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VPandya General Sponsor
Joined: 09 Nov 2009 Posts: 842
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Posted: Fri Jan 03, 2014 3:14 pm Post subject: Re: UBC 1997 can not be a Design Code anymore. |
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Dear Er. Chaubeyskc
Your statement:
"Any relevant reference (code applicable in our case is ACI-08/UBC97)."
UBC 1997 can not be a Design Code anymore. See my post dated 28th March 2013. Point is there is no such thing as UBC 1997 . You have to use ASCE 7-10. UBC 1997 was superseded by ASCE 7-05 and ASCE 7-10 few years back.
Regards.
Vasudeo Pandya P.E. ; S.E.
Structural Engineer
Copy of my post 28th March 2013:
----------------------------------------------------------------------------------------------------
Dear Er. Ykalamkar ,
UBC IS NO LONGER A VALID CODE IN USA. USE ASCE 7-10. Valid code is IBC 2012 and this refers to ASCE 7-10 as a reference document for all Loads including WIND and SEISMIC. UBC 1997 is superseded by IBC 2006 and IBC 2012.
ASCE 7-10 : " Minimum Design Loads for Building and Other Structures. "
There is a book " Seismic and Wind Forces. Structural Design Examples " . This has many worked out examples for wind loads based on ASCE 7-10. This is published by ICC same people who publish IBC Codes.
Point is there is no such thing as UBC CODE in USA anymore, from where UBC was published.
Regards.
Vasudeo Pandya P.E. ; S.E.
Structural Engineer |
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