Problem
A +0.8% grade meets a -0.4% grade at km 12 + 850 with elevation 35 m. The maximum allowable change in grade per station is 0.2%. Determine the length of the curve.
| A. 300 m | C. 80 m |
| B. 240 m | D. 120 m |
Route Surveying
Problem
A grade of -5% is followed by a grade of 1%, the grades intersecting at the vertex (Sta. 10 + 060). The change of grade is restricted to 0.4% in 20 m. Compute the length of the vertical parabolic sag curve in meters.
| A. 360 m | C. 300 m |
| B. 320 m | D. 340 m |
Problems
A compound curve has the following characteristics:
| I1 = 24° | D1 = 6° |
| I2 = 36° | D2 = 4° |
| Stationing of P.C. = km 10 + 420 | |
Compute the stationing of P.C.C.
| A. km 10 + 560 | C. km 10 + 520 |
| B. km 10 + 540 | D. km 10 + 500 |