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Significance and Use
5.1 Broad-crested weirs can be used for accurate measurements of a wide range of flow rates, but their structural simplicity and sturdiness make them particularly useful for measuring large flows under field conditions.
5.2 Because they require vertical sidewalls, broad-crested weirs are particularly adaptable to rectangular artificial channels or to natural and artificial channels that can readily be lined with vertical sidewalls in the immediate vicinity of the weir.
1.1 This test method covers measurement of the volumetric flow rate of water in open channels with two types of horizontal broad-crested weirs: those having a square (sharp) upstream corner and those having a well-rounded upstream corner.
1.2 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.
1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
ICS Number Code 17.120.20 (Flow in open channels)
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ASTM D5614-94(2014), Standard Test Method for Open Channel Flow Measurement of Water with Broad-Crested Weirs, ASTM International, West Conshohocken, PA, 2014, www.astm.orgBack to Top