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PIPE ON A SKID
[Subject Prev][Subject Next][Thread Prev][Thread Next] To: "Struct EngAssoc" <seaint(nospamat)seaint.org>
 Subject: PIPE ON A SKID
 From: "ASC" <ggg(nospamat)bigpond.net.au>
 Date: Tue, 15 Apr 2008 18:34:31 +1000
QUESTION WAS ASKED:
I am looking at (the overturning only, per the clients request)
an
industrial stack that will be constructed of basically 24=94 dia. =BC=94 = thick pipe. The stack is about 25=92 tall and will be supported on a steel = skid. ASCE 705 has an equation 15.45 for a Rigid Nonbuilding Structure which must have a =93T=94 less than .06s. If not, the way I read things is = that if it is not rigid then V is calculated from 12.81 using Cs from 15.4.1 (2). = If all of this is correct, I guess that I could assume a rigid structure = (since V will be larger using 15.45 and wind will probably govern overturning anyway) or calculate the period and see if it isn=92t rigid and use the = other equations that I have listed. I don=92t really have a problem assuming = a rigid structure and using the larger V, but I would like to see what = happens if it isn=92t. Now to my other question. How can I calculate the = period of a nonbuilding structure such as this. Basically a vertical pipe on a = steel skid. In all my references, I can=92t find an example. Can anyone out = there help me out? =20 Thanks, Joe Grill REPLY: If you tell me what that skid looks like, I can make a suggestion or
two.
Sincerely, Gregory from Oz

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