Civil Engineering - Highway Engineering - Discussion
Discussion Forum : Highway Engineering - Section 1 (Q.No. 3)
3.
Design of horizontal and vertical alignments, super-elevation, sight distance and grades, is worst affected by
Discussion:
19 comments Page 1 of 2.
Dhananjay Singh said:
9 years ago
Width length and height of vehicle are fixed parameter according to IRC and speed is variable for different speed SSD will be different so speed is considered to be worst (But at the time of designing of road length width and height of vehicle also considered).
Haroon said:
7 years ago
Width:pavement width, shoulder & parking.
Length:radius of curve, extra widening, osd &ssd.
Height:vertical clearance & flyovers, electric poles.
Speed: gradient, superelevation, sight distance.
Length:radius of curve, extra widening, osd &ssd.
Height:vertical clearance & flyovers, electric poles.
Speed: gradient, superelevation, sight distance.
Manoj said:
1 decade ago
Width Length and Height are only physical points of a vehicle and nothing to do of design of road because width, length and height are only come into consideration in turning manoeuvre.
Vikash said:
9 years ago
Speed of vehicle is only involved as a variable while the other three parameters are taken as per IRC reccomendation. Thus ie speed which contributes a major role.
Sanjay said:
1 decade ago
Here it is true that the width, length and height does not provide any effect for worsting the alignment. Speed of the vehicle is the right answer.
Yash said:
7 years ago
Speed is the major contribution of superelevation but in the road designing width height, length is also considered acc to IRC.
(1)
Onkar said:
1 decade ago
Aspect related to roads are decided by speed of the vehicle, which shall work for any vehicle irrespective of the model.
Sabariii said:
10 years ago
Width of the vehicle is influenced only in sight distance; otherwise speed of the vehicle is the right answer.
Shams Marwat said:
1 decade ago
Yes in the same way the superelevation of a vehicle is also designed by speed of vehicle. i.e. v*v/225R.
Jay mishra said:
1 decade ago
A road is totally design by speed of vehicle in friction, stopping distance, longitudinal slopes etc.
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