$7-$ Given: simple circular curve with $60$ degree of curvature. Determine the required superelevation rate for $50$ mph design speed.

$8-$ Given: four$-$lane highway with PC sta. $=19+45\mathrm{.}11,5\%$ design superelevation, and $60$

mph design speed. Determine the station at which full superelevation is attained. $7-$ Given: simple circular curve with $60$ degree of curvature. Determine the required superelevation rate for $50$ mph design speed.

$8-$ Given: four$-$lane highway with PC sta. $\backslash (=19+45\mathrm{.}11\backslash$mathrm$\{$ft$\},5\backslash \%\backslash )$ design superelevation, and $60$ mph design speed. Determine the station at which full superelevation is attained.