Problem $2$:

A retaining wall with geotextile reinforcement is $6-m$ high. For the granular

backfill, ${}_1=15\mathrm{.}9k\frac{N}{m^3}$ and ${}_1^{\text{'}}=30.$ For the geotextile, $T_{\text{a}\text{l}\text{l}}=16k\frac{N}{m}.$ For the

design of the wall, determine $S_V,L,$ and $l_l.$ Use $F{S}_{(B)}=F{S}_{(P)}=1\mathrm{.}5.$

After checking the internal stability, find out the external stability against overturning and

sliding.