$3\mathrm{.}1.$ The cross section fieldbook below was observed at stakevalue $120.$ Use the observation below to calculate the reduced levels.

$(2)$

$($aSV$120$

$H{I}_1=$

$\backslash$table$[[\backslash$table$[[$Distance$],[$left$]],$Reading,RL$,$Remarks,$\backslash$table$[[$Distance$],[$R$]],$Reading,RL$,$Remarks$],[C{L}_{v120},0,574,2114,725,,C{L}_{sv120},1,845,2114,725,],[\frac{-15}{\text{E}\text{o}\text{r}\text{m}\text{a}\text{t}\text{i}\text{o}\text{n}},1,638,,,+15,0,945,,],[$Formation$,H=2114,5,,,,,,]]$

$3\mathrm{.}2.$ Draw a cross section on graph sheet below using the information in $3\mathrm{.}1.$ and the following information:

$(3)$

Road design width $=12m,$ vertical scale $=1$:$100,$ Horizontal scale $=1$:$250,$ Side slope $=1$:$\frac{11}{2}$

Graph paper for cross section drawing