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 2 of 3.
Mohamed Elbesy said:
8 years ago
I think 200 is the correct answer.
1/40 accuracy on the map means 50 cm on the ground according to scale.
This means the offset is rounded to the nearest 50 cm and this applies only on 200 m.
1/40 accuracy on the map means 50 cm on the ground according to scale.
This means the offset is rounded to the nearest 50 cm and this applies only on 200 m.
Gaurav said:
8 years ago
Nowhere is mentioned that linear measurement is equal to angular measurement then, what is the reason to get answer 28.28?
JAY PANCHAL said:
8 years ago
Why 1.414?
Aashish said:
8 years ago
This formula is applicable maximum errorrs/√2.
28.28 correct answer.
28.28 correct answer.
(2)
Er Meghanada (Bhadrak) said:
8 years ago
L = 0.05"40"20*14.14 = 28.28 m.
Chandu said:
7 years ago
The maximum length or limiting length=L * S/sin0.
S=scale,
0=45°
S=scale,
0=45°
(1)
Sachin patil said:
5 years ago
What does 1 in 40 refer? Please explain.
(2)
Shubham P said:
5 years ago
Formula : Limiting error = (L/sin@) * (1/r) * (1/S).
∠ = 45' for max limiting offset.
1/r = 1:40 = accuracy of measurement.
1/S= 1:20 = scale.
Limiting error = 0.05 cm.
L = 20*(2)^0.5.
L= 28.28 m.
∠ = 45' for max limiting offset.
1/r = 1:40 = accuracy of measurement.
1/S= 1:20 = scale.
Limiting error = 0.05 cm.
L = 20*(2)^0.5.
L= 28.28 m.
(5)
Vijender thakur said:
5 years ago
How come 1.414? Please explain the answer in detail.
Abdus samad khan said:
4 years ago
Cosec = 1/sin.
Than sin45 =.707.
Cosec = 1/.707 = 1.414.
Than sin45 =.707.
Cosec = 1/.707 = 1.414.
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