The nominal $8$ in solid grouted concrete block masonry retaining wall shown in the following illustration has a specified strength of $1500lb\frac{f}{i}{n}^2$ and a modulus of elasticity of $1,000,000lb\frac{f}{i}{n}^2.$ The reinforcement consists of no$.4$ grade $60$ bars at $16$ in $.$ centers. The wall retains a soil with an equivalent fluid pressure of $30lb\frac{f}{f}\frac{t}{f}t,$ and the self$-$weight of the wall may be neglected. Is the wall adequate? Consider $1^{\text{'}}$ length of the wall, and use SD Method.