A vertical summit curve has tangent grades of +2.8% and -1.6%. The curve will be designed such that a motorist whose eyesight is 1.5m above the roadway can sight the top of a visible object 100mm at the right side of the summit, at a distance of 130m. a. Calculate the length of the curve in meters. b. What is the required change in grade per 20m station? c. How much farther is the summit from P.C than P.T?

A vertical summit curve has tangent grades of +2.8% and -1.6%. The curve will be designed such that a motorist whose eyesight is 1.5m above the roadway can sight the top of a visible object 100mm at the right side of the summit, at a distance of 130m. a. Calculate the length of the curve in meters. b. What is the required change in grade per 20m station? c. How much farther is the summit from P.C than P.T?

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

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The vertical summit curve has a tangent grades of +2.8% and -1.6%. A public road user whose eyesight is 1.5m above the pavement surface sighted the top of a visible object 100mm at the right side of the summit. Determine the length of curve for a sight distance of 130m.
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