Design and Calibration of a Compound Sharp-Crested Weir
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Volume 131, Issue 2
Abstract
This paper describes the design and calibration of a compound sharp-crested weir consisting of two triangular parts with different notch angles. This weir provides accurate measurement for a wide range of flows without discontinuities. The lower triangular part of the weir handles the normal range of discharges at the measurement structure while the upper part measures the occasional higher peak flows. This weir will be installed on the crest of small concrete gravity dams for measuring runoff in experimental catchments. The weir was calibrated in the laboratory using a scaled model. Different geometries (combination of notch angles) were tested in order to validate the proposed theoretical discharge equations.
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Information & Authors
Information
Published In
Journal of Hydraulic Engineering
Volume 131 • Issue 2 • February 2005
Pages: 112 - 116
Copyright
© 2005 ASCE.
History
Received: Jun 6, 2003
Accepted: Jul 22, 2004
Published online: Feb 1, 2005
Published in print: Feb 2005
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