Answer to Question #166540 in Civil and Environmental Engineering for Rylee

Question

Compute the curve data for the following arc definition curve. Given: the PI at station 26+31.25, a back tangent bearing from the PI to the PC of S25º36’24”W, a forward tangent from the PI to the PT of S37º46’48”E, and a tangent length of 436.18’. Calculate R, L, C, Delta, PC & PT (back & ahead) stations.

Answer 1

The route survey below shows the following: Azimuth of the back tangent (from PC to PI) is 65°35'20" The station if the PI is 23+25.00 and the coordinates of the PI are 1234.56 N, 1654.32 E The Degree of curve (D.) is 4°00'00" (arc definition) A (1) = 40°00'00" Az = 65-35-20 PC PI sta. 23+25.00 Q PT Compute the following: (5 points each) a) Radius (R) Curve Length (L) Tangent Length (T) Long Chord Length (LC) Station of the PC Station of the PT Azimuth of the forward tangent (from PI to PT) The station of the midpoint of the curve (on the curve) The deflection angle (8) from the PC to the midpoint of the curve The chord distance (ch) from the PC to the midpoint of the curve i) j)