Yes, You are correct. I appreciate for your reply.

Thanks for the explanation, make it very clear.

Now If I used the formula per F.5.1 (USC unit)

A = D^2(Pi-0.245 Dlr)/D^2/0.962*Fy*(tano).

Units of A = LBF

If I know the weight of the roof plates, say = 4593.8 lb then can I assume the gravity force (f) to get LBF OR How to get LBF?

Please let me know.

Again, I appreciate your time.

Regards,
Mayur