Civil Engineering - Surveying - Discussion
Discussion Forum : Surveying - Section 1 (Q.No. 2)
2.
If h is the difference in level between end points separated by l, then the slope correction is 
. The second term may be neglected if the value of h in a 20 m distance is less than
. The second term may be neglected if the value of h in a 20 m distance is less than
m1 m
2 m
3 m
Discussion:
67 comments Page 4 of 7.
Juhi said:
8 years ago
How it come 3.3?
Please explain clearly.
Please explain clearly.
Pradeep said:
8 years ago
Please, explain the answer clearly.
P.ayub said:
8 years ago
If the second term is neglected the slope correction falls under <=20%.
So it may be taken as h^2/2l=20%.
h^2/2*20=0.2.
h=2.82<3.
So answer is 3.
So it may be taken as h^2/2l=20%.
h^2/2*20=0.2.
h=2.82<3.
So answer is 3.
Radhika said:
8 years ago
How will get 3.3?
Aadil said:
8 years ago
The second term may safely be neglected for slopes flatter than about 1 in 25. Therefore,
h^2/2l=25%.
H^2/2*20=0.25,
H^2=10,
H=3.16.=3 (approx).
h^2/2l=25%.
H^2/2*20=0.25,
H^2=10,
H=3.16.=3 (approx).
Sanjay said:
8 years ago
Here all the options are correct as we apply them in the second term because the answer is in 10^-3.
So it is neglected. As we take to consider the highest value always so 3 is the correct answer.
So it is neglected. As we take to consider the highest value always so 3 is the correct answer.
Sandeep dharani said:
8 years ago
How will get 3.3?
Anybody, please explain it.
Anybody, please explain it.
Mayank said:
9 years ago
FOR SLOPE >=20% THEN 2ND TERM NEGLECTED.
Take min slope 20%,
SLOPE h^2/2l = 20%,
h^2/2 * 20 = 20%,
h^2 = 20% * 40,
h^2 = 8.
h approximately 2.83 which is nearly to 3.
Take min slope 20%,
SLOPE h^2/2l = 20%,
h^2/2 * 20 = 20%,
h^2 = 20% * 40,
h^2 = 8.
h approximately 2.83 which is nearly to 3.
Pratap said:
9 years ago
For slope >=20%, the 2nd term can be neglected.
Taking minimum slope as 20%,
Slope = 20%
or, h/d =20%
or, h/20 = 20%
or, h = 20 * 20%
or, h = 4.
Since the value nearer to 4 is 3, so the right answer is 3.
Taking minimum slope as 20%,
Slope = 20%
or, h/d =20%
or, h/20 = 20%
or, h = 20 * 20%
or, h = 4.
Since the value nearer to 4 is 3, so the right answer is 3.
Tamilarasan said:
9 years ago
How 3.3?
Please explain the answer.
Please explain the answer.
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