A single-lane racetrack is being constructed with a 150 mph design speed. A curve on this track has a radius of 4500 ft, central angle of 30 degrees, and a PI located at station 150+40. If the coefficient of side friction is 0.3, what superelevation is required for safe vehicle travel at the design speed? Also, determine the length of the curve and station of the PC and PT.

A single-lane racetrack is being constructed with a 150 mph design speed. A curve on this track has a radius of 4500 ft, central angle of 30 degrees, and a PI located at station 150+40. If the coefficient of side friction is 0.3, what superelevation is required for safe vehicle travel at the design speed? Also, determine the length of the curve and station of the PC and PT.

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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Concept explainers

Intersection Design

An intersection is a location where two or more roads or railways meet or join. The traffic movement is controlled at the intersection that depends on its design and type. It governs the operation, efficiency, speed, capacity, and safety of the highways, airways, and railways. The movement of the pedestrian causes hazards and delays at the intersection.

Question

A single-lane racetrack is being constructed with a 150 mph design speed. A curve on this
track has a radius of 4500 ft, central angle of 30 degrees, and a PI located at station 150+40.
If the coefficient of side friction is 0.3, what superelevation is required for safe vehicle travel
at the design speed? Also, determine the length of the curve and station of the PC and PT.

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Step 1: Given data.

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Step 2: Finding Superelevation.

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Step 3: Determine the length of curve.

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Step 4: Finding station of the PC and PT.

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