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A road bend which deflects 80° is to be designed for a maximum speed of 100 km per hour, a maximum centrifugal ratio of 1/4 and a maximum rate to the change, of acceleration of 30 cm/sec. The curve consists of a circular arc combined with two cubic spirals. Calculate: (a) the radius of the circular arc, b) the requisite length of transition, curve. c) the total lenath of the composite cune and

A road bend which deflects 80° is to be designed for a maximum speed of 100 km per hour, a maximum centrifugal ratio of 1/4 and a maximum rate to the change, of acceleration of 30 cm/sec. The curve consists of a circular arc combined with two cubic spirals. Calculate: (a) the radius of the circular arc, b) the requisite length of transition, curve. c) the total lenath of the composite cune and

Structural Analysis
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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A road bend which deflects 80° is to be designed for a maximum speed of 100 km per hour, a maximum centrifugal ratio of 1/4 and a maximum rate to the change, of acceleration of 30 cm/sec®. The curve consists of a circular arc combined with two cubic spirals. Calculate: (a) the radius of the circular arc, (b) the requisite length of transition, curve. (c) the total length of the composite curve, and (d) the chainages of the beginning and end of transition curve, and of the junctions of the transition curves with the circular arc if the chainage of the P.I. is 42862 metres.
Transcribed Image Text:A road bend which deflects 80° is to be designed for a maximum speed of 100 km per hour, a maximum centrifugal ratio of 1/4 and a maximum rate to the change, of acceleration of 30 cm/sec®. The curve consists of a circular arc combined with two cubic spirals. Calculate: (a) the radius of the circular arc, (b) the requisite length of transition, curve. (c) the total length of the composite curve, and (d) the chainages of the beginning and end of transition curve, and of the junctions of the transition curves with the circular arc if the chainage of the P.I. is 42862 metres.
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