A drain is to be set out using an engineer’s tilting level from the following information: Length of drain AB = 150 m Gradient AB, falling from A to B = 1 in 100 Invert level at A = 64,350 m Length of the traveller = 2,000 m A backsight of 1,200 m has been taken to a nearby benchmark, the reduced level of which is 67,650 m. Calculate the staff readings necessary to locate sight rails over A and B.
A drain is to be set out using an engineer’s tilting level from the following information: Length of drain AB = 150 m Gradient AB, falling from A to B = 1 in 100 Invert level at A = 64,350 m Length of the traveller = 2,000 m A backsight of 1,200 m has been taken to a nearby benchmark, the reduced level of which is 67,650 m. Calculate the staff readings necessary to locate sight rails over A and B.
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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Question
A drain is to be set out using an engineer’s tilting level from the following information:
Length of drain AB = 150 m
Gradient AB, falling from A to B = 1 in 100
Invert level at A = 64,350 m
Length of the traveller = 2,000 m
A backsight of 1,200 m has been taken to a nearby benchmark, the reduced level
of which is 67,650 m.
Calculate the staff readings necessary to locate sight rails over A and B.
Expert Solution
Step 1
Invert level at A = 64.350m
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