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 6 of 7.
Kawal jee v said:
7 years ago
@Vijay.
How it comes 3.3? Explain your answer.
How it comes 3.3? Explain your answer.
Rahul verman said:
8 years ago
How it will come 3.3?
Abhilash jana said:
8 years ago
When distances are measured along the slope, the equivalent horizontal distance may be determined by applying a slope correction.
The vertical slope angle of the length measured must be measured. (Refer to the figure on the other side).
Thus, For gentle slopes, m<20%.
Ch = h^2/2l.
For steep slopes, 20% <= m <= 30%.
Ch = h^2/2l+h^4/8l^3.
For very steep slopes, m>30%.
Ch = l(1-cos0).
The vertical slope angle of the length measured must be measured. (Refer to the figure on the other side).
Thus, For gentle slopes, m<20%.
Ch = h^2/2l.
For steep slopes, 20% <= m <= 30%.
Ch = h^2/2l+h^4/8l^3.
For very steep slopes, m>30%.
Ch = l(1-cos0).
Chandradeep said:
8 years ago
For slopes greater than 5% the above formula must be adopted otherwise the second part of the formula can be neglected.
Since the first three options are less than or equal to 5% they can neglected as the 3m is greater than 5% the second part of formula must included. Hence the answer is (D) 3m.
Since the first three options are less than or equal to 5% they can neglected as the 3m is greater than 5% the second part of formula must included. Hence the answer is (D) 3m.
Suparna said:
8 years ago
If h2 = 4O. Then h = 6.324.
How it will come 3.3? Please explain.
How it will come 3.3? Please explain.
Rajesh said:
8 years ago
How it comes 3.3?
Rajesh said:
8 years ago
How it comes 3.3?
AKSHAY VASHISHT said:
8 years ago
Second term is neglected for slope less than 10%.
Slope for given problem for:
C) (2/20)*100 = 10%.
D) (3/20)*100 = 15%.
So for h = 2 m or less it is neglected.
And for h = 3 m it will be taken into account.
Slope for given problem for:
C) (2/20)*100 = 10%.
D) (3/20)*100 = 15%.
So for h = 2 m or less it is neglected.
And for h = 3 m it will be taken into account.
Raju said:
9 years ago
h square = 40.
Square root of 40 = 6.32 or 6.33.
How get it 3.3?
Square root of 40 = 6.32 or 6.33.
How get it 3.3?
Siva said:
9 years ago
h2 = 40 root 40 = 6.32.
How can you get 3.3?
How can you get 3.3?
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