Civil Engineering - Surveying - Discussion
Discussion Forum : Surveying - Section 1 (Q.No. 35)
35.
If θ is the slope of the ground and l is the measured distance, the correction is
Discussion:
7 comments Page 1 of 1.
Kuldeep kumar said:
3 years ago
Right answer is A.
(1)
Ameiry Hassan said:
5 years ago
Slope correction = l-D, where l is sloping distance and D horizontal distance, construct a right-angled triangle ABC whose hypotenuse is l, adjacent D and the angle subtended between l and D be theta (θ) solve for D using trigonometric ratio u will get D= lcosθ then recall,
Correction = l-D
=l-lcosθ
= l(1-cos θ)
Using the concept of half angle formula 1-cosθ= 2sin^2θ/2 and therefore correction= 2lsin^2(θ/2).
Correction = l-D
=l-lcosθ
= l(1-cos θ)
Using the concept of half angle formula 1-cosθ= 2sin^2θ/2 and therefore correction= 2lsin^2(θ/2).
(1)
Priyanka Shah said:
5 years ago
@All.
how comes D=I cosθ. Please explain it.
how comes D=I cosθ. Please explain it.
Akki said:
5 years ago
D means? Give expansion for the formula.
SARAVANARAJA said:
6 years ago
How D=lcosθ?
(1)
Vamsi suppu said:
9 years ago
Slope correction = L-D.
L=l.
cos@=l/D.
D=ICOS@.
Correction = L-D.
= l-lcos@.
= l(1-cos@).
= l(2sin@/2).
L=l.
cos@=l/D.
D=ICOS@.
Correction = L-D.
= l-lcos@.
= l(1-cos@).
= l(2sin@/2).
Danesh said:
9 years ago
Slope correction= L-D.
Here L=l.
D=lcos@.
So Correction = l-lcos@.
= l(1-cos@).
= 2lsin^@/2.
Here L=l.
D=lcos@.
So Correction = l-lcos@.
= l(1-cos@).
= 2lsin^@/2.
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