Finding The Length Of Parabolic Curve Given Change In Grade Per Station

Date of Exam
May 2018
Subject
Mathematics, Surveying and Transportation Engineering

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

 

Answer Key

 

Solution

 

Category
Surveying
Route Surveying
Parabolic Curve
Summit Curve
Length of Parabolic Curve