Wind load combination for analysis

[suliman90]

hello

i need help in selecting the proper single wind load combination for an analysis investigation (not for design)

my gravity loads as 4 KN/M2 DEAD and 2 kN/M2 as LIVE loads and non for snow nor rain loads ,for all floors including roof ( RC frame with flat solid slab floor)

I am confused between eq 3 , 4 ,6 from my local design code( similar code to ASCE 7-10) attached below and which one is adequate for my investigation .

thanks

 

[phamENG]

You have to do all of them and design for the worst case load effects. Run a separate analysis for each load combination, and then design a beam that works for all of the analyses.

 

[suliman90]

that is the problem sir
how to apply EQ 3 and 4 if I don't have Lr nor R ?

 

[phamENG]

You put in your Lr and R loads, which in this case happen to be 0psf.