I. Given data of a simple curve: Azimuth from south of line AB = 275°, Azimuth from south of line BC 323°, R = 327.4 m, sta PC = 1+073

Find: 

             1. Sta PT

             2. Sta of point 3 on curve.

             3. deflection angle of point 3

             4. c2

2. A parabolic curve having a forward tangent of +3.5% intersects a back tangent of -7% at station 10+800 whose elevation is 520m. If the length of the curve is 350m., find the stationing and elevation at the lowest point.

 

3. Given base = 6.2m,   6.6/+2.4 0/+2.0 x/+1.2

1.       Find the side slope

2.       Find x

3.       Find the cross-sectional area.