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:
68 comments Page 1 of 7.
Sandesh said:
4 weeks ago
The second term (i.e., the slope correction itself) becomes negligible when the slope is gentle. A common rule of thumb is:
If ℎ<1 meter over a 20-meter distance, the correction is small enough to be ignored in most practical surveying applications.
This threshold ensures that the error introduced by ignoring the correction is within acceptable limits for standard fieldwork.
If ℎ<1 meter over a 20-meter distance, the correction is small enough to be ignored in most practical surveying applications.
This threshold ensures that the error introduced by ignoring the correction is within acceptable limits for standard fieldwork.
NARDOS TEFERI said:
2 years ago
For slope (M) up to 20%.
According to me, the solution is;
Slope correction(Sc) = h^2/(2l).
Here d = 20m,
M = h/d,
0.2 = h/20.
H = 0.2 * 20 = 4m.
According to me, the solution is;
Slope correction(Sc) = h^2/(2l).
Here d = 20m,
M = h/d,
0.2 = h/20.
H = 0.2 * 20 = 4m.
(14)
Chaan A said:
3 years ago
Explain it clearly.
(7)
Aazad said:
4 years ago
Second term will be neglected when h=3cm not 3meter for length 20 meter.
(4)
Mukesh das said:
4 years ago
How it will be 3m?
Please explain clearly with the completed formula.
Please explain clearly with the completed formula.
(4)
Mukesh das said:
4 years ago
How it will be 3m?
Please explain clearly with the completed formula.
Please explain clearly with the completed formula.
(5)
Dev Narayan Yadav said:
4 years ago
l = 20 m.
H2 = 2l,
H2 = 2*20,
H2 = 40.
And;
H = 6.32 or 6.33,
√40 = 6.32.
H2 = 2l,
H2 = 2*20,
H2 = 40.
And;
H = 6.32 or 6.33,
√40 = 6.32.
(7)
Khagendra said:
5 years ago
For slope (M) up to 20%.
Slope correction(Sc) = h^2/(2l).
Here d = 20m,
M = h/d,
0.2 = h/20.
H = 0.2 * 20 = 4m.
Here the nearest one is 3m.
So 3m is the appropriate answer.
Slope correction(Sc) = h^2/(2l).
Here d = 20m,
M = h/d,
0.2 = h/20.
H = 0.2 * 20 = 4m.
Here the nearest one is 3m.
So 3m is the appropriate answer.
(17)
Kartabo Ketema said:
5 years ago
How it will be 3m? Explain it with the formula.
Nandhu said:
5 years ago
The second term can be negleted only if the slopes flatter than 1 in 25..
That means 4%.
i.e, 4% of 20m = 0.8(4/5) ie, H shouldn't higher than 0.8m.
So option A is right.
That means 4%.
i.e, 4% of 20m = 0.8(4/5) ie, H shouldn't higher than 0.8m.
So option A is right.
(4)
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