Civil Engineering - Highway Engineering - Discussion

Discussion Forum : Highway Engineering - Section 1 (Q.No. 1)
1.
A district road with a bituminous pavement has a horizontal curve of 1000 m for a design speed of 75 km ph. The super-elevation is
1 in 40
1 in 50
1 in 60
1 in 70
none of these.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
Discussion:
96 comments Page 5 of 10.

Jahidul Islam said:   5 years ago
V^2\225R is correct.

Omkar said:   5 years ago
Yes @Yugananth

V^2/225R is the correct formula.

Anupama patra said:   5 years ago
I think the superelevation is v^2/127R and this question not mention the radius are 1000.

Mahesh said:   5 years ago
Here they have not given lateral friction, so we can take as e = V2/225*R.

MILI said:   4 years ago
You are absolutely right @Anitha.

We cannot use the formula e=v^2/225 directly, as the question does not mention Hill road.

Anant chaudhari said:   4 years ago
Good explanation. Thanks all.

Timirbaran Daata said:   2 years ago
According to IRC 73-1990 Plate 1, the answer is 1:50.

Sarath chandra said:   2 years ago
When shall we need to consider the speed in terms of metres per second? Please explain to me.

Sanju said:   3 weeks ago
e = (0.75 * v)^2/gR.
e = (0.75 * 75 * (5/18))^2/9.81 * 1000.
= 0.025 = 1/40.

Aditya said:   1 decade ago
Guys can you please tell me the density of GSB, WMM, DBM and also BC?


Post your comments here:

Your comments will be displayed after verification.