Analysis
Trial for "dt" to match "d" IBC 18073.2.1
S'p=0 psf/ft 
S1=0 psf 
Apost=0 ft
d=0 ft
Sp=0 psf/ft   Prorated From Table 1806.2 dt(ft)= 0 ft Δtrial(ft)= 0 ft