Situation. A $-2\mathrm{.}0\%$ grade meets an $8\mathrm{.}0\%$ grade near an underpass. To maintain

minimum clearance allowed under the bridge, and at the same time introduce

vertical transition curve in the grade line, it is necessary to use a

curve that lies $400$ m on one side and $240$ on the other. The station at

beginning of curve $(400$ m side$)$ is $10+000$ and its elevation $200$ m $.$

Determine the stationing of the lowest point on the curve.

A$.10+200$

B$.10+213$

C$.10+231$

D$.10+233$

Determine the elevation at station $10+080.$

A$.198\mathrm{.}56$ m

B$.198\mathrm{.}70$ m

C$.198\mathrm{.}75$ m

D$.198\mathrm{.}80m$

Determine the elevation of the end of the curve.

A$.192$ m

C$.211$ m

B$.200$ m

D$.240$ m