Civil Engineering - Surveying - Discussion

Discussion Forum : Surveying - Section 1 (Q.No. 16)
16.
If a 30 m chain diverges through a perpendicular distance d from its correct alignment, the error in length, is
.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
Discussion:
21 comments Page 1 of 3.

PANKAJ PRAJAPATI said:   5 years ago
Alignment correction = h^2/2L = d^2/2 * 30 = d^2/60.
(10)

Satya said:   5 years ago
It is H^2/60.
(4)

Saad said:   6 years ago
H √2*l.
(4)

Anurag jain said:   7 years ago
h^2/2L is the formula of alignment correction.
= h^2/2*30.
= h^2/60.
(3)

Sammy said:   7 years ago
For example, You are on the sloped surface and you are measuring horizontal distances, so here one end is fixed and when you move to the other end on a sloped surface, there will be the difference in elevations from two ends of the chain,

NOW, HERE WILL COME ERROR BECAUSE OF THE EARTHS CURVATURE, and that error is cumulative (an error will add with slope length). so the formula is h2/2l = d2/2*30 = d2/60 , (d= verticle distance)
(3)

Manzoor Hussain said:   5 years ago
Thank you @Sammy.
(2)

Mahesh Parajuli said:   1 decade ago
h^2/(2L).
where L = Chain length.
h = Max deflection.
(1)

Goutham said:   6 years ago
Misalignment is d^2/L= d^2/30 is the right answer.
(1)

Er Meghanada (Bhadrak ) said:   8 years ago
Formula Of Alignment correction = h Square /2L,
Length of Chain (L)= 30 m.
= h Square / 2*30 m = h Square / 60 m.

(Right Answer = d square / 60 m).
(1)

Ravi Kumar said:   8 years ago
I can't understand please explain me.


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