$\text{'}($a$).$ The section of a Solid Gravity Dam built

of concrete $($unit weight $=24$ kN$.$m$)$ is shown

in the figure aside. A tailwater or D$/$S water depth is $6\mathrm{.}0$ m when the dam reservoir is at its maximum water levcl $($MWL$)$ at $86\mathrm{.}0$ m$.$ Taking the uplift pressure as cqual to the hydrostatic

pressure at either ends and considered to set over $60\%$ of the arca of the base section, evaluate the $($i$)$ net uplift pressure force, $($in$)$ hydrodynamic force $($as per anger's formula$)$ and $($ili$)$ earthquake forces $($horizontal and

vernican acung on the dam scction. The carthquakc forces arc cquivalent to $0\mathrm{.}10$g for horizontal forces and $0\mathrm{.}05$g for vertical forces.

$($take$,$ unit weight of water $=10$ kN$.$m$)$