Need a book? Engineering books recommendations...

Return to index: [Subject] [Thread] [Date] [Author]

Re: UBC-97 and Piperacks

[Subject Prev][Subject Next][Thread Prev][Thread Next]

Rand,

Actually you have a choice.  You can consider the piperack's lateral force resisting systems to be similar to a buildings (UBC 1634.2) and use an R of 4.5 for your transverse ordinary moment frame and an R of either 5.6 or 6.4 whether you choose ordinary or special braced frames longitudinally.  If you go this route you also have to comply with all the other building related requirements including issues with special seismic detailing, irregularities, etc.  OR you can consider your structure as purely non-building like and use an R of 2.9 where you may not necessarily need to comply with all the other requirements.

Thomas Hunt, S.E.
Fluor



Rand W Holtham <RHoltham(--nospam--at)CBI.com>
07/18/2007 06:40 AM
Please respond to seaint
To
seaint(--nospam--at)seaint.org
cc
Subject
UBC-97 and Piperacks






Just reading the UBC 97 I am inclined to use an R = 2.9 for non building
structures, however reading into the blue book it seems I should use the
values in table 16-N (R=4.5 for OMRF of steel). Is this correct?

TIA

Rand


******* ****** ******* ******** ******* ******* ******* ***
*   Read list FAQ at: http://www.seaint.org/list_FAQ.asp
*
*   This email was sent to you via Structural Engineers
*   Association of Southern California (SEAOSC) server. To
*   subscribe (no fee) or UnSubscribe, please go to:
*
*   http://www.seaint.org/sealist1.asp
*
*   Questions to seaint-ad(--nospam--at)seaint.org. Remember, any email you
*   send to the list is public domain and may be re-posted
*   without your permission. Make sure you visit our web
*   site at: http://www.seaint.org
******* ****** ****** ****** ******* ****** ****** ********

------------------------------------------------------------
The information transmitted is intended only for the person 
or entity to which it is addressed and may contain 
proprietary, business-confidential and/or privileged material.  
If you are not the intended recipient of this message you are 
hereby notified that any use, review, retransmission, dissemination, 
distribution, reproduction or any action taken in reliance upon 
this message is prohibited. If you received this in error, please 
contact the sender and delete the material from any computer.  

Any views expressed in this message are those of the individual 
sender and may not necessarily reflect the views of the company.  
------------------------------------------------------------