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  • ASTM
    D3858-95(2014) Standard Test Method for Open-Channel Flow Measurement of Water by Velocity-Area Method
    Edition: 2014
    $103.58
    Unlimited Users per year

Description of ASTM-D3858 2014

ASTM D3858-95-Reapproved2014

Withdrawn Standard: Standard Test Method for Open-Channel Flow Measurement of Water by Velocity-Area Method (Withdrawn 2023)




ASTM D3858

Scope

1.1 This test method covers the measurement of the volume rate of flow of water in open channels by determining the flow velocity and cross-sectional area and computing the discharge therefrom (Refs (1-7)).2

1.2 The procedures described in this test method are widely used by those responsible for the collection of streamflow data, for example, the U.S. Geological Survey, Bureau of Reclamation, U.S. Army Corps of Engineers, U.S. Department of Agriculture, Water Survey Canada, and many state and provincial agencies. The procedures are generally from internal documents of the above listed agencies, which have become the defacto standards as used in North America.

1.3 This test method covers the use of current meters to measure flow velocities. Discharge measurements may be made to establish isolated single values, or may be made in sets or in a series at various stages or water-level elevations to establish a stage-discharge relation at a site. In either case, the same test method is followed for obtaining field data and computation of discharge.

1.4 Measurements for the purpose of determining the discharge in efficiency tests of hydraulic turbines are specified in International Electrotechnical Commission Publication 413 for the field acceptance tests of hydraulic turbines, and are not included in this test method.

1.5 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.

1.6 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.


Keywords

discharge measurement; open channel flow; water discharge


ICS Code

ICS Number Code 17.120.20 (Flow in open channels)


DOI: 10.1520/D3858-95R14

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