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 3 of 7.
Yps said:
9 years ago
The answer is 3 cm, not 3 m.
Mahavicky said:
9 years ago
How h come in the answer?
Imran Hossain said:
9 years ago
** If h is the difference in level between endpoints separated by l, then the slope correction is c=(h^2/2l)+{h^4/8(l^3)}.
** If h is less than 3m in a length often the 20 m, then the quantity h^4/8(l^3) can be neglected. Hence c = h^2/2l.
Source. Dr. B.C. Punmia.
** If h is less than 3m in a length often the 20 m, then the quantity h^4/8(l^3) can be neglected. Hence c = h^2/2l.
Source. Dr. B.C. Punmia.
Pravin Pawar said:
9 years ago
For slope greater than 5% closer a closer approximation of corrected slope can be determined by h2/2l + h4/8l3.
Otherwise taken as h2/2l.
In the above example slope taken as 5% of length.
Length = 20 m therefore slope is 1.
Slope = height/length.
We have slope value equal to 1.
Then h2/2l = 1.
Answer is 6.32 m which is more than 3.
Otherwise taken as h2/2l.
In the above example slope taken as 5% of length.
Length = 20 m therefore slope is 1.
Slope = height/length.
We have slope value equal to 1.
Then h2/2l = 1.
Answer is 6.32 m which is more than 3.
Irfan said:
9 years ago
How 3.3? Explain in detail.
Simha said:
9 years ago
Not getting this. Please explain briefly.
Naga Raju CH said:
9 years ago
h^2/2l = 1.
h^2/2 * 20 = 1,
h^2/40 = 1.
h^2 = 40.
Therefore(h) =6.32 (how will come 3 answer plz explain briefly).
h^2/2 * 20 = 1,
h^2/40 = 1.
h^2 = 40.
Therefore(h) =6.32 (how will come 3 answer plz explain briefly).
Tamilarasan said:
9 years ago
How 3.3?
Please explain the answer.
Please explain the answer.
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.
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.
Post your comments here:
Quick links
Quantitative Aptitude
Verbal (English)
Reasoning
Programming
Interview
Placement Papers