Question

Problefn 2 A fising gradient of I in 19 is present on a ro curve of 540 ft. This is then followed by a falling gradient of lin 38. The curve j gradients in a tangent. The highest point on the curve is 223 ft. The existing curve has poor visibility. Another curve of 1320 ft has to replace the prese ad which is followed by a vertical parabolic summit oins both the nt one for better visibility On the top curve tabulate the elevations of points at 180 ft. interval. Determine the depth of excavation at 360 fi from the BVC a) b)

Answer 1

At first we will calculate the elevation at different points on curve. Then we will make the table. Then we will determine the excavation depth.

SAo 640 o) 1%o /640-tan 180 nl b Excavation detpih am of at m e cavation : depth.,a pAane fram "Them 0 dwngnake 38 hn)