CTC 440 - Homework 7 (Superelevation)

A) Develop a superelevation diagram (from "begin runout" to "end full super") using the following information:

2-lane rural highway Design Speed 90 km/hr Radius = 1000 meters Curves to the left

TS - STA 17+000 SC - STA 17+031 CS - STA 18+050 ST - STA 18+081

Notes:

• Provide runout, runoff, and superelevation lengths
• Provide stations and pavt cross-slopes at the following transition points: begin runout, begin runoff, reverse crown, begin full super, and end full super.

B. Assuming 3.6-meter lanes calculate the elevation of the pavement edges (both left and right) at Sta 17+020 if the elevation of the centerline at Sta 17+020 = 365.000 meters.