EN:

The sheet pile given in the figure below has been safely designed and applied. Assuming the factor of safety as $1\mathrm{.}5,$ what is the internal friction angle $?)$ of the soil on the substrate?

TR:

A$$a$$daki $$ekilde verilen palplan$$ perdesi g$$venli bir $$ekilde tasarlanm$$ ve uygulanm$$t$$r$.$ G$$ven katsay$$s$$n$$n $1,5$ oldu$$unu var sayarak, alt tabakadaki zeminin i$$sel s$$rt$$nme a$$s$)=($ ne kadard$$r$?$

Soil $1$:

$K_{a1}=0\mathrm{.}33$

$C=30k\frac{N}{m^2}$

${}_n=17k\frac{N}{m^3}$

Soil $2$:

${}^{\text{'}}=$

$C=0k\frac{N}{m^2}$

${}_n=18k\frac{N}{m^3}$

${}_{\text{S}\text{a}\text{t}}=20k\frac{N}{m^3}$

${}_{\text{D}\text{o}\text{y}\text{g}\text{u}\text{n}}=20k\frac{N}{m^3}$

$K_a=\frac{1-sin{}^{\text{'}}}{1+sin{}^{\text{'}}},K_p=\frac{1+sin{}^{\text{'}}}{1-sin{}^{\text{'}}}$

$K_a=$ Rankine's active pressure coefficient

$=cos\frac{cos-\sqrt[\phantom{2}]{co{s}^2-co{s}^2{}^{\text{'}}}}{cos+\sqrt[\phantom{2}]{co{s}^2-co{s}^2{}^{\text{'}}}}$