Draw the cross sections and compute $V_e$ for the data given in Problems $26\mathrm{.}5$ through $26\mathrm{.}8.$

$26\mathrm{.}5*$ Two level sections $75$ ft apart with center heights $4\mathrm{.}8$ and $7\mathrm{.}2$ ft in fill, base width $30$ fits, side slopes $2$:$1.$

$26\mathrm{.}6$ Two level sections of $30-m$ stations with center heights of $3\mathrm{.}44$ and $2\mathrm{.}58$ m $.$ in cut, base width $15$ m $,$ side slopes $1-1/2$:$1.$

$26\mathrm{.}7$ The end area at station $36+00$ is $305f{t}^2.$ Notes giving distance from centerline and cut ordinates for station $36+60$ are

C $4\mathrm{.}8/17\mathrm{.}2$; C $5\mathrm{.}3/0$; C $6\mathrm{.}2/10\mathrm{.}2.$ Base is $30$ ft $.$

$26\mathrm{.}8$ An irrigation ditch with $b=12ft.$ Notes giving distances from centerline and cut ordinates for stations $52+00$ and $53+00$ are C $2\mathrm{.}4/10\mathrm{.}8$; C $3\mathrm{.}0$; C $3\mathrm{.}7/13\mathrm{.}4$; and C $3\mathrm{.}1/14\mathrm{.}2$; C $3\mathrm{.}8$; C $4\mathrm{.}1/14\mathrm{.}2.$