Thanks Dave for the explanation.

I'm following the client's specification which mainly accordance to 1997 Uniform Building Code (UBC).

They states some factors and coefficients such as:
Peak ground acceleration (PGA);0.06g.
Seismic zone factor; Z=0.075
Seismic importance factor; l=1.25, lp=1.5
Soil profile type; SD.
Seismic coefficients; Ca=0.12 and Cv =0.18.

Then following by set of calculation. At the end of the calculation, they stated formula of (32-1) to be result in Fp = 0.72Wp.

So, can I just take the value as the 0.72g for the Caesar II uniform load input?