BS 3680-4B:1986

Superseded

View Superseded by

Methods of measurement of liquid flow in open channels. Weirs and flumes Triangular profile weirs

Available format(s)

Hardcopy , PDF

Superseded date

31-03-2008

Language(s)

English

Published date

31-01-1986

Publisher

British Standards Institution

National foreword
Committees responsible
Method
1. Scope and field of application
2. References
3. Definitions and symbols
4. Units of measurement
5. Installation
6. Maintenance
7. Measurement of head
8. Specification for the standard weir
9. Discharge characteristics
10. Uncertainties in flow measurement
11. Examples
Annex
Symbols
Table
1. Values of X"c, as a percentage, in terms of Cv and f
Figures
1. Triangular profile weir
2. Coefficient of approach velocity, Cv
3. Drowned flow - Cvf in terms of hp/h and
2/3 square root 2/3 Cd bh/A

Methods for steady flow conditions. Examples are given on the computation of flow rate and associated uncertainty for modular and drowned flow conditions.

Committee	CPI/113
DevelopmentNote	Supersedes 80/31246 DC and BS 3680-4B(1969) (07/2005)
DocumentType	Standard
Pages	22
PublisherName	British Standards Institution
Status	Superseded
SupersededBy	BS ISO 4360:2008

ISO 4373:2008	Hydrometry Water level measuring devices
BS 3680-3A:1980	Measurement of liquid flow in open channels. Stream flow measurement Velocity-area methods
BS 3680-1:1983	Measurement of liquid flow in open channels. Glossary of terms
BS 5844:1980	Methods of measurement of fluid flow: estimation of uncertainty of a flow-rate measurement