Problem $4$:

In Figure below for the anchor slab in sand, $H=1\mathrm{.}52m,h=0\mathrm{.}91m,B=1\mathrm{.}22m,S^{\text{'}}=2\mathrm{.}13m,{}^{\text{'}}=30,$ and $=17\mathrm{.}3k\frac{N}{m^3}.$ The anchor plates are made of concrete and have a thickness of $76mm.$ Using Ovesen and Stromann's method, calculate the ultimate holding capacity of each anchor. Take ${}_{\text{c}\text{o}\text{n}\text{c}\text{r}\text{e}\text{t}\text{e}}=23\mathrm{.}58k\frac{N}{m^3}.$