Hidden Point Bar Method for Precise Heighting
Publication: Journal of Surveying Engineering
Volume 130, Issue 4
Abstract
Precise heighting by the hidden point bar method is investigated. The investigation includes development of the mathematical model, calibration of the hidden point bar, and comparison with precise leveling and precise trig heighting. The method is applied in the field at a coal-fired electric power generating plan. Both the field application and the comparison with precise leveling and precise trig heighting indicated that the level of precision is on the order of . Special advantages of the method are that the target point does not have to be visible from the measurement instrument and the bar placed on the target can be set at any convenient orientation.
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Copyright © 2004 ASCE.
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Published online: Oct 15, 2004
Published in print: Nov 2004
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