Civil Engineering - Highway Engineering - Discussion

Discussion Forum : Highway Engineering - Section 1 (Q.No. 8)
8.
If the ruling gradient on any highway is 3%, the gradient provided on the curve of 300 metre radius, is
2.00%
2.25%
2.50%
2.75%
3.00%
Answer: Option
Explanation:
No answer description is available. Let's discuss.
Discussion:
63 comments Page 1 of 7.

Shweta Shikotra said:   2 years ago
Grade compensation = min (30+r/r or 75/r).
Here 75/r = 0.25.
Gradient = ruling gradient - grade compensation.
= 3.00 - 0.25.
= 2.75.
(12)

Md Afzal Imam said:   2 years ago
If the curve provided is <40 then use the formula 30+R/ 30.

And if curve>40 then use the formula 75/R.

Here we use the latter one;.

Now, 75/300 = 0.25.
Compensated G= 3-0.25 = 2.75.
Answer C is correct.
(9)

Amrendra kumar said:   2 years ago
No compensation is required for less than 4 per cent.

So, the answer 3% is correct.
(14)

SHUBHAM SINGH said:   3 years ago
The answer should be 3% because it is already flatter than 4%.

As per IRC no GC for less than 4%.

Although as per calculation by formula it is coming out to be 2.75%.

{(30+R)/R OR 75/R}MIN VALUE ADOPTED.
(12)

Saraga said:   3 years ago
3 - (75/300) = 2.75.
(1)

Meme said:   4 years ago
If the curve provided is <40 then use the formula 30+R/ 30.

And if curve>40 then use the formula 75/R.

Here we use the latter one;
Now, 75/300 = 0.25.
Compensated G= 3-0.25 = 2.5.
(9)

Meme said:   4 years ago
If the curve provided is <40 then use the formula 30+R/ 30.

And if curve>40 then use the formula 75/R.

Here we use the latter one;
Now, 75/300 = 0.25.
Compensated G= 3-0.25 = 2.5.
(1)

Sanat kumar said:   4 years ago
As per IRC no compensation will be done to the gradient flatter than 4%.

So, the answer should be 3%.
(3)

Shivansh_ said:   4 years ago
@All.

There is a rule that if the calculated gradient comes less than 4%, then we can't provide it. Hence the minimum compensated gradient value is 4%.
(1)

Shubham gour said:   5 years ago
Grade compensation =75/R%.
75/300= 0.25.
Then given ruling gradient is 3%.
3 - 0.25= 2.75 %.
(6)


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