EngineerEIT
Structural
Per ASCE 7-10:
When you are designing wood load bearing studs supporting low slope wood roof trusses, do you include an uplift value in your axial load determination due to wind? Do you use MWFRS (say Cp from Figure 27.4-1) or C&C? Say tributary/effective area is less than 700sf.
For the out-of-plane wind, C&C loading makes sense but the uplift from C&C will be higher than MWFRS and will result in a lower axial load than MWFRS.
When you are designing wood load bearing studs supporting low slope wood roof trusses, do you include an uplift value in your axial load determination due to wind? Do you use MWFRS (say Cp from Figure 27.4-1) or C&C? Say tributary/effective area is less than 700sf.
For the out-of-plane wind, C&C loading makes sense but the uplift from C&C will be higher than MWFRS and will result in a lower axial load than MWFRS.