Given the loads specified, compute the maximum combined load using the ASCE$7$ load combinations for strength design. State the governing principal action loads:

a$.$ Roof of large theater: $D=25psf,L=50psf,R=8psf,S=30psf($treat $L$ as suspended from roof$)$

b$.$ Floor of office: $D=45psf,L=65psf$

c$.$ Column in parking garage: $D=4\mathrm{.}0k,L=6\mathrm{.}5k,L_r=1\mathrm{.}5k,R=1\mathrm{.}25k,S=4\mathrm{.}8k$

d$.$ Roof of arena: $D=50psf,L=150psf,R=8psf,S=140psf($treat $L$ as suspended from roof$)$

e$.$ Lateral pressure at base of a large municipal water tank wall: $D=1500ps\frac{f}{l}f,F=62\mathrm{.}4ps\frac{f}{l}f,H($from soil outside the tank wall$)=35ps\frac{f}{l}f,L_r=$ and $S$ are applied to the tank roof$).$ Tank wall is buried; top of tank $=$ top of grade. Compute for both empty tank and tank full of water. Express in psf$/$lf of tank height.

Hints $/$ Q&A:

problem $1.$e: the lateral earth pressure, $H,$ is from the soil outside of the tank, and the fluid pressure, F$,$ is from the water inside the tank. Where are the dead, D$,$ live roof, $Lr,$ and snow, S$,$ loads considered from? Lets say from a roof over the tank $-$ such as a large municipal water tank. You will end up with a lateral pressure and a vertical pressure.