Civil Engineering - Surveying - Discussion

Discussion Forum : Surveying - Section 2 (Q.No. 16)
16.
Keeping the instrument height as 1 m, length of staff 4 m, the up gradient of the ground 1 in 10, the sight on the up slope must be less than
25 cm
20 m
45 m
10 m
Answer: Option
Explanation:
No answer description is available. Let's discuss.
Discussion:
42 comments Page 4 of 5.

Er Meghanada (Bhadrak.Odisha) said:   8 years ago
h = height of the instrument+height of staff/gradient.

Slope = h square (2x staff length).

h = 3/2+4/10
= 1.5 + 0.4 = 1.9.

Slope = 1.9 square (2*4) = 0.45 m.

For 100 m slope = 45 m.

Garry said:   8 years ago
I agree @Amitkumarsachin.

Ms ali said:   8 years ago
@Amitkumar.

You are right it is 15m.

Ravi said:   6 years ago
I too agree, 55 is right.

Aamir said:   8 years ago
I also agree with you @Amitkumar, it should be 15m.

Tera bhai said:   8 years ago
Absolutely right @Amit Kumar.

Tanmoy said:   7 years ago
The answer will be 20 because the slope is 1 in 10 it means in every 10 mtr slope height increasing 1 mtr then in 20 mtr it will be 2 mtr where HI is 1.5 mtr ( Slope is UPWARD).

Tanmoy karmakar said:   7 years ago
I agree the answers is 15 m.

Skm said:   7 years ago
Agree, it should be 15 m.

Akash said:   7 years ago
Why H.I is 3/2?

please explain.


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