Civil Engineering - Highway Engineering - Discussion
Discussion Forum : Highway Engineering - Section 5 (Q.No. 42)
42.
Extra widening required at a horizontal curve on a single lane hill road of radius 80 m for a design speed of 50 km ph and for a vehicle with wheel base 6.0 m is
Discussion:
21 comments Page 2 of 3.
Akki said:
6 years ago
Thanks for explaining @Balli Singh.
Balli singh said:
6 years ago
Option B is the correct answer.
l^2/2R + V/9.5""R.
0.6^2/2*80 +50/9.5""80 =0.59 answer.
l^2/2R + V/9.5""R.
0.6^2/2*80 +50/9.5""80 =0.59 answer.
Shibabaw D. said:
7 years ago
Psychological widening : At horizontal curves, drivers have a tendency to maintain a greater clearance between the vehicles than on straight stretches of road. Therefore an extra width of pavement is provided for psychological reasons for greater manoeuvrability of steering at higher speeds and to allow for the extra space requirements for the overhangs of vehicles.
Jitendra Singh Shekhawat Alwar Rajasthan said:
7 years ago
R<50 m Provide Extra widening on the inner side.
50m<R<300m Provide Extra widening both sides of Curve.
Here;
V/(9.58*√R).
V=50kmph,
R=80m,
than put value.
50/(9.5*√80)= .588m.
50m<R<300m Provide Extra widening both sides of Curve.
Here;
V/(9.58*√R).
V=50kmph,
R=80m,
than put value.
50/(9.5*√80)= .588m.
(1)
Bhanuvalmiki said:
8 years ago
Ans is 0.811.
Priya said:
8 years ago
I think the Total widening is L2/2R+V2/9.5*rutR.
Er. Manish Katoch said:
8 years ago
X= (18n/R)+(0.1+V/ -^R).
n = No. Of lanes,
R = Radius,
V= speed of vehicle.
n = No. Of lanes,
R = Radius,
V= speed of vehicle.
Shaurya said:
8 years ago
I think the answer is A because for single lane.
Wpsy =0.
Wpsy =0.
Lakshmi Narayana said:
9 years ago
Here, W =nL^2/2R.
Shailendra kumar said:
9 years ago
Here not clearly mention what we have to actually determine. Therefore answer should be (D).
Correct answer would be Mechanical + psychological widening = 0.811 m.
Correct answer would be Mechanical + psychological widening = 0.811 m.
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