Civil Engineering - Surveying - Discussion
Discussion Forum : Surveying - Section 1 (Q.No. 38)
38.
Offsets are measured with an accuracy of 1 in 40. If the point on the paper from both sources of error (due to angular and measurement errors) is not to exceed 0.05 cm on a scale of 1 cm = 20 m, the maximum length of offset should be limited to
Discussion:
22 comments Page 3 of 3.
Kenneth andres said:
3 years ago
1/100 = 0.01m.
40/100 = 0.4,
0.01m/20m = 0.4m/x,
X^2 = 800,
X = 28.28.
40/100 = 0.4,
0.01m/20m = 0.4m/x,
X^2 = 800,
X = 28.28.
(4)
Rinku Kumar meena said:
3 years ago
Actually, the maximum length of offset 1/40 cm it means 0.025mm.
But the above question's maximum length of offset 0 .05cm. It means 0.5 mm or 1/20 cm
So, the maximum length of offset=s/20*r/√2.
S = 20
r = 40.
So, 20/20*40/√2.
= 28.32m.
But the above question's maximum length of offset 0 .05cm. It means 0.5 mm or 1/20 cm
So, the maximum length of offset=s/20*r/√2.
S = 20
r = 40.
So, 20/20*40/√2.
= 28.32m.
(10)
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