A singular rectangular foundation with dimensions of $1\mathrm{.}80\backslash$times $2\mathrm{.}70\backslash$times $0\mathrm{.}35$m is subjected to the characteristic permanent and moving seals shown in the figure. Since the depth of excavation is $1\mathrm{.}30$ m and the unit volume weight of soil is $16$k$($N$)/($m$^(3)),$ determine whether the given foundation is safe or not by making necessary shear calculations. If it is not safe; since the dimensions of the foundation shoe are fixed, determine the most economical foundation thickness that can safely carry the incoming soil by making the necessary shear and bending calculations. Prepare the foundation reinforcement drawing to be sent to the construction site $($Draw the shoe reinforcement plan.$)70$ mm allowance, C$(25)/(30),$ B$420$C$,$ Good control. $\backslash$sigma $\_($zem $)=155$KPa, Note The foundation shoe dimensions are fixed and only the foundation thickness can be increased if necessary: $5$ cm in multiples if necessary.

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