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conical roof structure analysis on staa pro

conical roof structure analysis on staa pro

(OP)
Namaste from india.

How can i validate my staad pro roof structure file for project purpose analytically.
Diameter of roof=42 m
height of tank=10 m approx
column supported primary and secondary rafter and girder supported.
loading as per API 650 Section 5
AISC ASD Code for Design check.
Design criterias:Deflection ratio(L/400),Utility ratio,Bending stress.
hereby i have attached my staad text file.
guide me in a proper manner,eagerly waiting for fruitful reply.
correct me if i am wrong.
thanks in advance.
jsn.1411@gmail.com

RE: conical roof structure analysis on staa pro

Can't help you on the checking.
One of the requirements is that rafters be stable assuming no lateral support with dead weight of roof plate and rafter only acting. That will quite likely control the design of the rafters unless additional bracing is used.
There normally wouldn't be a limitation on deflection.

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