AS 3778.4.1:1991
Measurement of water flow in open channels - Measurement using flow gauging structures - Thin-plate weirs

Standard No.

AS 3778.4.1:1991

Published By

Standard Association of Australia （SAA）

Status

Be replaced 2022-06

Replace By

AS 3778.4.1:2022

Latest

AS 3778.4.1:2022

Scope

Specifies methods for the measurement of water flow in open channels using rectangular and triangular-notch (V-notch) thin-plate weirs. The flow conditions considered are limited to steady, free and fully ventilated discharge. It also specifies limitations of applicability related to weir and flow geometry for the recommended equations. It is technically identical with and reproduced from ISO 1438-1:1980.

AS 3778.4.1:1991 history

• 2022 AS 3778.4.1:2022 Measurement of water flow in open channels, Part 4.1: Measurement using flow gauging structures — Thin-plate weirs (ISO 1438:2017, IDT)
• 1970 AS 3778.4.1:1991 Measurement of water flow in open channels - Measurement using flow gauging structures - Thin-plate weirs