Wind coefficients for cone shaped roof

Question

Wind coefficients for cone shaped roof

chazzeek (Structural)

(OP)

16 Aug 10 12:09

I am working with a company that designs steel grain bins. I am helping better work IBC into their design. Because IBC can be vague when dealing with non building structures, we are having a hard time determining wind loads for a cone shaped roof. the roof is about a 30 degree slope, if anyone could point me to a good resource that would be appreciated. thank you.

stookeyfpe (Specifier/Regulator) · Answer 1 · 2010-08-16 23:54:44

Go to ASCE 7. Most load requirements in the 2009 IBC are referenced from ASCE 7.

chazzeek (Structural) · Answer 2 · 2010-08-17 11:45:23

That is where i have been looking, unfortunately the ASCE7 does not cover cone shaped roofs. That is why i was asking if anyone knew of any other resource. I might have to try and come up with something by combining round structures, and gable roofs.

WillisV (Structural) · Answer 3 · 2010-08-17 13:47:51

See Appendix C5 of the attached document which provides coefficients and methodologies for bins and silos. Note that this is the New Zealand code - so may not be directly portable to ASCE-7 based design - but should provide a rational basis to help you.

http://files.engineering.com/getfile.aspx?folder=6bdf6362-18dc-45f4-b64f-82

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Wind coefficients for cone shaped roof