Question $1$

An undivided rural road $($total width $11,4m)$ with $1$ lane in each direction, and a camber of $2\%,$ has to be designed to a design spe ed of $100k\frac{m}{h}r.$ A section of this road has a right hand horizontal curve with a superelevation rate of $6,5\%.$ The BC is at stake value $6542,63$ and the EC at stake value $6841,28.$ The vertical alignment for this section of road is as follows;

$\backslash$table$[[$Stake value,PI No$.,$Height of PI$,$Radius$],[5800,00,6,64,83,300],[6600\mathrm{.}00,7,43,78,180],[7400,00,8,48\mathrm{.}98,400]]$

$1\mathrm{.}1$ Show diagrammatically the stake values with the change in crossfall values at the relevant points $($as per crown and superelevation development$),$ for the entire curve.

Calculate and tabulate the final road levels $($left edge, centre$-$line and right edge$)$ for the following; SV $6460,$ SV $6520,$ SV $6560$ and the EC of the horizontal curve.

$(16)$

$(26)$