AS 3778.4.11-1991
Withdrawn
Measurement of water flow in open channels - Measurement using flow gauging structures End-depth method for estimation of flow in non-rectangular channels with a free overfall (approximate method) (Reconfirmed 2009)
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English
01-01-1991
12-12-2019
Specifies a method for the estimation of sub-critical flow of water in smooth, essentially horizontal, straight open channels with a vertical drop and discharging freely. It is technically identical with and reproduced from ISO 4371:1984.
| Committee |
CE-024
|
| DocumentType |
Standard
|
| ISBN |
0 7262 7068 7
|
| Pages |
11
|
| ProductNote |
Withdrawn 12-12-2019.
|
| PublisherName |
Standards Australia
|
| Status |
Withdrawn
|
| UnderRevision |
This International Standard specifies a method for the estimation of subcritical flow of clear water in smooth, essentially horizontal, straight open channels with a vertical drop and discharging freely. Gentle positive slopes not greater than 1 in 2 000 are admissible. This International Standard covers channels with the following types of cross-section, the nappe being unconfined:a) trapezoidal;b) triangular;c) parabolic;d) circular.Using the measured depth at the end, the flow can be estimated.
| Standards | Relationship |
| ISO 4371:1984 | Identical |
First published as AS 3778.4.11-1991.
| AS 3778.1-1990 | Measurement of water flow in open channels Vocabulary and symbols |
| AS 3778.4.2-1991 | Measurement of water flow in open channels Part 4: Measurement using flow gauging structures Rectangular broad-crested weirs |
| AS 3778.4.10-1991 | Measurement of water flow in open channels Measurement using flow gauging structures - End-depth method for estimation of flow in rectangular channels with a free overfall (Reconfirmed 2009) |
| AS 3778.1-2001 | Measurement of water flow in open channels Vocabulary and symbols |
| AS 3778.4.1-1991 | Measurement of water flow in open channels Part 4: Measurement using flow gauging structures Thin-plate weirs |
| AS 3778.7-2008 | Measurement of water flow in open channels Determination of volume of water and water level in lakes and reservoirs |
| ATS 4747.6-2008 | Meters for non-urban water supply Installation and commissioning of open channel meters |
| ATS 4747.3-2008 | Meters for non-urban water supply Specifications for open channel meters |
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