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BS 3680-4I:1986

Current
Current

The latest, up-to-date edition.

Methods of measurement of liquid flow in open channels. Weirs and flumes V-shaped broad crested weirs
Available format(s)

Hardcopy , PDF

Language(s)

English

Published date

30-09-1986

National foreword
Committees responsible
Method
1. Scope and field of application
2. References
3. Definitions
4. Units of measurement
5. Installation
6. General requirements for maintenance
7. Measurement of head
8. V-shaped broad-crested weirs
9. Discharge equations
10. Errors in flow measurement
Annexes
A. Scaling effects
B. "More than full" flow
C. Submerged flow
Figures
1. V-shaped broad-crested weir
2. Longitudinal section of three types of construction
3. Determination of head-gauge datum
4. Dimensions of weir and flow
5. Discharge coefficient as a function of h1/L
6. Flow pattern above crest for free flow with
     h1/L = 0,353
7. Dimensions for "more than full" flow
8. Modular limit for V-shaped broad-crested weirs
9. Submerged flow reduction factor for V-shaped
     broad-crested weirs

Method for the measurement of subcritical flow in small rivers and articifial channels.

This International Standard specifies a method for the measurement of subcritical flow in small rivers and artificial channels using V-shaped broad-crested weirs.

The advantages of this type of weir are described in clause 8.

NOTE A comparison of the different types of weirs and flumes will form the subject of a future International Standard.

Committee
CPI/113
DevelopmentNote
Also numbered as ISO 8333 Supersedes 84/21095 DC (07/2005)
DocumentType
Standard
Pages
22
PublisherName
British Standards Institution
Status
Current

BS 3680-2A:1964 Measurement of liquid flow in open channels. Dilution methods Constant rate injection
BS 3680-4D:1989 Methods of measurement of liquid flow in open channels. Weirs and flumes Compound gauging structures

ISO 4373:2008 Hydrometry Water level measuring devices
BS 3680-4F:1981 Methods of measurement of liquid flow in open channels. Weirs and flumes Round-nose horizontal crest weirs
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

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