Exercise $1$

Determine the required span lenath $O$ for the following flexible wall $($selfsupporting curtain$)$ according to Eurocode $7.$

Groundwater is kept at the same level in front of and behind the wall.

The angle of friction of the gravel is $45($characteristic value$)$ with the cohesion equal to zero. The consistency of the clay is $30$kPa and the angle of friction $250($typical values$).$ The specific weight of both soils is $19k\frac{N}{m^3}.$

No over$-$excavation needs to be considered.

$=19k\frac{N}{m^3}$