The "Back Sight" reading on a vertically held staff at a point A on the floor along the centre line of a railway tunnel is 3.465 m, and the "Fore sight" on the inverted staff held at the roof of the tunnel just vertically above A is 1.155 m. The height of the tunnel along the centre line at floor point A is BS -> FS |

Structural Analysis
6th Edition
ISBN:9781337630931
Author:KASSIMALI, Aslam.
Publisher:KASSIMALI, Aslam.
Chapter2: Loads On Structures
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The "Back Sight" reading on a vertically held staff at a point A on the floor along the centre
line of a railway tunnel is 3.465 m, and the "Fore sight" on the inverted staff held at the roof of
the tunnel just vertically above A is 1.155 m. The height of the tunnel along the centre line at
floor point A is
59
2
Transcribed Image Text:The "Back Sight" reading on a vertically held staff at a point A on the floor along the centre line of a railway tunnel is 3.465 m, and the "Fore sight" on the inverted staff held at the roof of the tunnel just vertically above A is 1.155 m. The height of the tunnel along the centre line at floor point A is 59 2
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