For the building with the plan dimensions shown below, the exterior walls are $12"$ CMU weighing $78psf.$ The wall is fastened to a flexible roof diaphragm at $4\text{'}-0"$ spacing. The section at the north wall is shown below. $S_{DS}=0\mathrm{.}64.I_e=1\mathrm{.}25.I_p=1\mathrm{.}0$ for parapet.

Find:

a$.$ The design seismic load on the wall in psf

b$.$ The shear diagram for the wall based on the lateral load from a above.

c$.$ The roof$/$wall fastener design force.

d$.$ The design seismic load on the parapet in plf$.$

e$.$ The shear diagram for the parapet based on the lateral load from $c$ above.

Hints: See Sec. $12\mathrm{.}11\mathrm{.}1$ and Eq$.12\mathrm{.}11-1.$ Parapet is considered a non$-$structural component. See Eq$.13\mathrm{.}3-1.$

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