Situation $2$:

A highway is being designed to DWPH guidelines with a $75kph$ design speed. At one section, a symmetrical vertical curve must be designed to connect grades of $+4\mathrm{.}0\%$ and $+1\mathrm{.}24\%.$

Expected average daily traffic $=645$ vehicles per day

Mountainous terrain

Determine the ff$.$

$23.$ length of curve required assuming provisions are to be made for desirable SSD

$24.$ length of curve required assuming provisions are to be made for desirable PSD

$25.$ Station of PVT if the PVI is at Sta $15+000$

$26.$ Elevation of PVT if the PVI is at elevation $145m$

Need asap