QUESTION $2$

A two$-$lane two$-$way road has a $3\mathrm{.}7m$ wide lanes A simple horizontal curve in the road has a degree of curvature of $13$ and intersection angle of $55{25}^{\text{'}}.$ The $BC$ is located at chainage $2+450$ and normal camber is $2\mathrm{.}5\%.$ The design speed of the road is $112k\frac{m}{h}.$

The finished road levels on the centreline at $Ch1+900$ and $Ch3+400$ are $221\mathrm{.}00m$ and $186\mathrm{.}00m$ respectively and the gradient is uniform between these points.

Calculate the minimum radius required for the horizontal curve.

Determine the length of the curve and the chainage of the EC$.$

Determine the design superelevation $"$e$"$ value.

Determine the minimum length of the crown runoff.

Determine the minimum length of the superelevation development.

Draw a fully labelled the superelevation diagram for the whole curve.

Determine ALL chainages, centreline elevations and elevations along the edge of the road on the inner edge and outer edge at ALL key points on the diagram $($ie$.NC,AC,$ CF$,$ BC$,$ EC$,$ and FS sections$).$