The nominal $8$ in$.$ solid grouted concrete block masonry bearing wall shown in the following illustration has a specified strength of $1500$ lbf$/$in$2$ and a modulus of elasticity of $1,000,000$ lbf$/$in$2.$ The wall supports an axial load, including its own weight, as shown in the illustration. The wall, has a height of $15$ ft$,$ and may be considered pinned at the top and bottom. Ignore accidental eccentricity. The wall is not part of the lateral force resisting system. Determine if the wall is adequate. Consider $1$ length of the wall, and use SD Method. Note that if reinforcement is not needed, $=0\mathrm{.}6.$ and if it is needed, $=0\mathrm{.}9?$ Pu$=30$ kips$/$ft