Cliff,
Chris is on the right track. There is nothing I know of that provides
"blast protection" for sprinkler systems. The impact loading of a
blast is probably a lot more severe than an earthquake and what we
normally use might not do much of anything. The EOR needs to provide
you with specifics. I would start with an RFI stating that there is
currently no bracing listed for blast protection and to advise on
materials and methods.
At 05:58 PM 11/10/2010, you wrote:
I have an unusual situation on a project and would like some opinions.
We are currently doing a project where seismic bracing has been specified
for 'blast protection' (or something like that). The project is not in a
zone that would otherwise require seismic protection. So here is my
question.
Are restraining straps required to be installed on the beam clamps?
Now before you answer, consider this - NFPA 13 2007 - 9.3.7.1 - C-type
clamps ... used to attach hangers to the building structure IN AREAS SUBJECT
TO EARTHQUAKES shall be equipped with a retraining strap.
Ok, now what is your opinion?
Thanks,
Cliff Whitfield, SET
President
Fire Design, Inc.
850-526-1886
[email protected]
www.fire-design.com
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Todd G. Williams, PE
Fire Protection Design/Consulting
Stonington, CT
860.535.2080
www.fpdc.com
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