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Re: How to medel temperature effect in RCC building using STAAD?

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dear ashraf Manjappara,
The effect of +/-20 degree can be waived for 200' + structures using Shrinkage strip. ( Ref. H/B of Concrete engg. by Fintel).
To Model in Staad, along with frame mebers we have to model the slab with finite elements. For a two storey frame. If first floor slab is not subjected to  temerature changes it will act as rigid diaphram and the additional moments will be generated in Upper Columns not in the columns below. 
And for Load comb. involving Temp. loads partial safety facor for loads 1.2 * (DL+LL+TL) or 1.5 ( DL+TL) is to be used.
K. N. Sheth