ASTM D5129 Standard Test Method for Open Channel Flow Measurement of Water Indirectly by Using Width Contractions
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ASTM International
Standard Test Method for Open Channel Flow Measurement of Water Indirectly by Using Width Contractions
N D5129
Annotation
This test method covers the computation of discharge (the volume rate of flow) of water in open channels or streams using bridges that cause width contractions as metering devices.2
This test method produces the maximum discharge for one flow event, usually a specific flood. The computed discharge may be used to help define the high-water portion of a stage-discharge relation.
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.
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.
2 This test method is similar to methods developed by the U.S. Geological Survey and described in documents referenced in Footnote 5.5
Автоматический перевод:
Стандартный метод испытаний для открытого измерения потока канала воды косвенно при помощи сокращений ширины
Этот метод испытаний покрывает вычисление выброса (уровень объема потока) воды в открытых каналах или потоках, используя мосты, которые вызывают сокращения ширины как измерение устройств 2
