portal frames sap2000 (imposed loads on roofs) 1

[homestate_s]

when defining imposed loads (live) on a rafter(roof) of a portal frame on sap2000 ,under the option "type" would it be reasonable to assign "roof live" instead of "live" considering that "live" is usually defined on floors/shells. Attached is a snapshot of the matter at hand.

 

[Tim Naseem]

May be a late reply to the question, i would say specifying roof live would be a better idea if you create auto load combinations based on your design code, however if you are defining combinations manually, i don't see any difference.