Structural Analysis
6th Edition
ISBN: 9781337630931
Author: KASSIMALI, Aslam.
Publisher: Cengage,
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The two-peg test is used to determine if the line of sight of an engineer’s level is in adjustment, and the following rod readings are taken: with instrument set up near A, rod reading on A is 1.623 m, rod reading on B is 2.875 m; with instrument set up near B, rod reading on B is 1.622 m, and rod reading on A is 0.362 m.
i. The correct rod reading on A to give a level line of sight with the instrument still set up near B should be?
answer: 0.366 m
ii. In order to adjust the line of sight, the horizontal cross hairs should be moved?
answer: Upward by 0.004 m
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