Question $5$

$[25/100$ marks$]$

A crest vertical curve joining a $+3$ percent and a $-4$ percent grade is to be designed for $85k\frac{m}{h}.$ Assume that the rate of vertical curvature $K=60,$ and if the tangents intersect at station $(345+18)$ at an elevation of $76\mathrm{.}2m$ determine the stations and elevations of the BVC and EVC. In addition, determine the elevation of stations $344+00,$ and $357+00.$

Figure Q$5$