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
m, length of staff 4 m, the up gradient of the ground 1 in 10, the sight on the up slope must be less thanDiscussion:
42 comments Page 1 of 5.
Ganie Zyan said:
1 year ago
Calculations:
Given,
Height of instrument (HI) = 1.5 m.
Length of staff = 4 m.
Ground slope (downslope) = 1/10.
x = 25 m.
Given,
Height of instrument (HI) = 1.5 m.
Length of staff = 4 m.
Ground slope (downslope) = 1/10.
x = 25 m.
(1)
Saeem baloch said:
3 years ago
15 is the correct answer.
Om Prakash pandey said:
3 years ago
What is the Right answer? Please explain me.
Birendra said:
3 years ago
15m will be the right answer.
(1)
Sarathkumar yadav said:
3 years ago
25 m is the correct answer.
(2)
Vilasagaram Rajesh Kumar said:
3 years ago
Yes, 15m is the right answer. I agree with it.
(1)
Rahul singh said:
4 years ago
TanQ= (4-1.5)/x = 1/10 = 2.5/x.
= 25m.
= 25m.
(3)
Kakar said:
4 years ago
Solution;
Note: Here in Q it is not 1 1/2 actually it is only 1/2 so,
if upward slope asked then i.e +ve.
Sight= (Staff ht + instrument ht.)/(Slope)
Sight=(4+1/2)(1/10)
Sight=(4.5)*(10)
Sight=45 m.
And It will be 55 m in case if 1 1/2 only.
Note: Here in Q it is not 1 1/2 actually it is only 1/2 so,
if upward slope asked then i.e +ve.
Sight= (Staff ht + instrument ht.)/(Slope)
Sight=(4+1/2)(1/10)
Sight=(4.5)*(10)
Sight=45 m.
And It will be 55 m in case if 1 1/2 only.
(7)
Umesh kumar sah said:
4 years ago
I also agree with 15 m.
(1)
Bomter Nyodu said:
4 years ago
Slope = 1/10,
H.I = 1/2 = 0.5,
Sight = (0.5 + 4)/1 ÷ 10 = 45.
H.I = 1/2 = 0.5,
Sight = (0.5 + 4)/1 ÷ 10 = 45.
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