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RE: SEISMIC: Design in Pakistan; General Questions

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Peshawar is 1500 km in the north of Karachi.



In Pakistan UBC-97 rules for seismic and ACI318 for everything else (for buildings), the seismic zoning map of Pakistan specifies zones according to UBC. Karachi is Zone 2B, as we move eastwards it becomes Zone 2A (how many miles I am not sure).

Regarding 3 are you referring to a seismic hazard analysis for the site, deterministic or probabilistic? Is the structure of such importance that it warrants a specific study?


Hope this helps.


Best regards,

Shiraz Shahid.


From: David Topete [mailto:d.topete73(--nospam--at)]
Sent: February 23, 2010 05:32
To: seaint(--nospam--at)
Subject: Re: SEISMIC: Design in Pakistan; General Questions


From UFC 3-310-01, Structural Load Data...


                             MCE Ss   MCE S1 10/50 Ss  10/50 S1  

Pakistan Peshawar 105           42          53            21 


I don't know what help this may be...  Good Luck...


On Mon, Feb 22, 2010 at 2:09 PM, bill(--nospam--at) <bill(--nospam--at)> wrote:

I know we've got some engineering brethren here from the subcontinent, so please chime in if you would.


1. What are the seismic design criteria in Pakistan? (The area I'm looking at is about fifteen miles southeast of Karachi).


2. Would use of the NEHERP/ASCE 7/IBC provisions be well-received there?


3. If the answer to no. 2 is "yes," how would we go about conducting a site-specific study to establish the key seismic design parameters? I had thought that the relevant standards addressed that, but they seem to be limited to establishment of site classification, and only touch briefly on the actual spectral acceleration parameters (e.g. NEHRP 3.4). So, has anyone been involve in actually coming up with the site-specific spectral acceleration parameters?


Thanks, that'll do for a start. ;-)

David Topete, SE