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 2 of 7.
Durga said:
7 years ago
How can you get 3? Please explain the solution in detail.
(1)
Frlyrvllz said:
6 years ago
The formula (h^2/2L)+(h^4/8L^3) is for slope that ranges from 20%-30%.
If (h^4/8L^3) is to be neglected, h^2/2L is left and if we are going to equate it with 20% the answer would be 2.8~3 and if h^2/2L is to be equated to 30% the answer would be 3.4~3 therefore the answer is 3.
If (h^4/8L^3) is to be neglected, h^2/2L is left and if we are going to equate it with 20% the answer would be 2.8~3 and if h^2/2L is to be equated to 30% the answer would be 3.4~3 therefore the answer is 3.
(1)
Fayez abusafaqa ps said:
5 years ago
The error can be accepted upto 10%. thus, the second term divided by the correlational factor equal 0.1.
Assuming the first term is x and the second term is y. Then y/x+y=0.1==> x+y/x=10 with y not zero==>1+x/y=9==>y=9. solve it u will get l=3.
Assuming the first term is x and the second term is y. Then y/x+y=0.1==> x+y/x=10 with y not zero==>1+x/y=9==>y=9. solve it u will get l=3.
(1)
Swathi said:
6 years ago
How will get 3.3?
Rathika said:
8 years ago
Here, root 40 = 6.32.
Then how will get h= 3.3?
Then how will get h= 3.3?
Vaibhav rana said:
8 years ago
@All.
Answer is 1
Very simple put tan(3°)=h/20.
You will get the answer.
h=1m.
Answer is 1
Very simple put tan(3°)=h/20.
You will get the answer.
h=1m.
Venkatesh said:
8 years ago
How? Explain.
BALA said:
8 years ago
In this case, if we neglected 2nd term the correction should be less 20%. So,(h^2/2x20)<20% or 0.2. results h<2.828 m.
Srinivas reddy said:
8 years ago
h'2 = 20% * 2 * 20.
= 2.826.
= 2.826.
Souvik said:
8 years ago
Thanks for the answer.
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