Question $3$

$3\mathrm{.}1$ The sketch below shows the details of a curve used in the vertical alignment of an existing $2-$lane, two$-$way rural road. Calculate the chainage and elevation of BVC$,$ the elevation of EVC, and the chainage and elevation of the lowest point of the curve.

$3\mathrm{.}2$ Refer to Question $3\mathrm{.}1,$ the minimum required stopping sight distance $($SSD$)$ on the vertical curve section is $165$ m $,$ compute the available sight distances over the curve and verify if the curve length is adequate.

$(8)$

$[20$ marks$]$