BS 3680-4I:1986
Current
The latest, up-to-date edition.
Methods of measurement of liquid flow in open channels. Weirs and flumes V-shaped broad crested weirs
Hardcopy , PDF
English
30-09-1986
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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.
| 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
|
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.
| 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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