Civil Engineering - UPSC Civil Service Exam Questions - Discussion
Discussion Forum : UPSC Civil Service Exam Questions - Section 23 (Q.No. 9)
9.
The following readings were taken with a Dumpy level and a 4 m levelling staff on a continuously sloping ground at 30 m intervals : 0.680 m, 1.455 m, 1.855 m, 2.330 m, 2.885 m, 3.380 m, 1.055 m. The R.L. of the fourth point was calculated to be 79.100 m. The R.L. of the point that was read 0.680 m is
Discussion:
3 comments Page 1 of 1.
Debal said:
8 years ago
fall___ (1.455-0.680)=0.775 ; (1.855-1.455)=0.400 ; (2.330-1.855)=0.475 & 4th R.L 79.100.
Then 79.100+0.475+0.400+0.775 = 80.750.
Then 79.100+0.475+0.400+0.775 = 80.750.
(6)
Rahul said:
2 years ago
HI of 4th point is RL(79.10)+2.330 = 81.430.
HI will be constant so RL of point 1 is;
81.430-.680 = 80.750.
HI will be constant so RL of point 1 is;
81.430-.680 = 80.750.
(6)
Rakesh said:
9 years ago
Why not B?
Please explain the solution.
Please explain the solution.
(1)
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