Civil Engineering - Surveying - Discussion

Discussion Forum : Surveying - Section 2 (Q.No. 10)
10.
A uniform slope was measured by the method of stepping. If the difference in level between two points is 1.8 m and the slope distance between them is 15 m, the error is approximately equal to
cumulative, + 0.11 m
compensating, ± 0.11 m
cumulative, - 0.11 m
none of these
Answer: Option
Explanation:
No answer description is available. Let's discuss.
Discussion:
35 comments Page 1 of 4.

Sandeep Gautam said:   1 week ago
Now we know that the given sloping distance is 15 meters and the elevation difference is 1.8 meters.

That means we know the slope i.e. H: V = 15 : 1.8.

But slope gives us the value of horizontal distance per unit error. We want an error per unit horizontal distance here means 1.8 : 15.
That gives us 0.12 which is cumulative of course due to slope. Hence it will be +0.12 cumulative or corrected for +0.11 cumulative.

Bikash Kumar Mandal said:   1 year ago
The Slop error is +ve.
(5)

Adeel Rehman said:   3 years ago
Slope correction = h^2/2L = 1.8^2/(2*15) = 0.108~0.11.
Slope error is always + ive slope correction is always -ive.
So, Cumulative Error.
(5)

Amsal said:   3 years ago
15- √(15^2-1.8^2) = 0.108 = .11.

AND we know slope correction is always negative so the error is positive 0.11.
Option A is correct.
(2)

Dalvir singh said:   4 years ago
Sloping error is always positive and cumulative in nature.
(2)

Shubham P said:   4 years ago
Now we know that given sloping distance is 15meter and difference in elevation is 1.8 meter.

That means we know the slope i.e. H:V = 15 : 1.8.
but slope gives us value of horizontal distance per unit error. We want error per unit horizontal distance here means 1.8 :15.
That gives us 0.12 which is cumulative of course due to slope. Hence it will be +0.12 cumulative or corrected for +0.11 cumulative.

Paru said:   5 years ago
By Pythagoras Theorem, the ground distance is 15.10 and slope distance is 15m.

Since Error = Measured value - True Value, and here Measured value is lesser that is 15m, we get the error as -ve.

Hence correction +ve. Therefore, I agree with Option (A).

Santosh said:   5 years ago
Slope correction is always nagetive. So error due to slope is positive.

Vishal said:   6 years ago
Error is positive.

And here we have to find an error. Therefore positive cumulative.

Roni said:   6 years ago
Slope correction is always subtracted from slope distance. So correct answer is C.


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