Homework #$4($due $9/9)$

How tall can a test soil structure be if $T_u=70k\frac{N}{m}(4800l\frac{b}{f}t),S_v=0\mathrm{.}2m(8in),$ and facing is provided by concrete blocks between geosynthetic grids or sheets? The soil weighs $20k\frac{N}{m^3}(128l\frac{b}{f}{t}^3)$ and has friction angle $=40.$

Homework #$5($due $9/9)$

Repeat Homework #$4$ with $=47$

$($a$)$ using $($non$-$AASHTO$)$ LRFD

$($b$)$ using AASHTO LRFD Load & Resistance Factor Design