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ASTM D2034 1968 Edition, September 13, 1968
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Standard Method for OPEN CHANNEL FLOW MEASUREMENT OF INDUSTRIAL WATER AND INDUSTRIAL WASTE WATER BY WEIRS
Includes all amendments and changes through Reapproval Notice , 1975
Additional Comments: W/D NO S/S
Page Count:8
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This method covers the measurement of the rate of flow <;Jf water and waste water in open channels or streams at or near the ground surface using the triangular (V-notch), rectangular and trapezoidal type weirs having end and bottom contractions.

Weirs are particularly applicable where there is low head flow at liquid ·discharge outlets for relatively clear water containing a minimum of suspended solids which, on low flows, tend to settle out upstream.