BS 3680-4G:1990
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
Methods of measurement of liquid flow in open channels. Weirs and flumes Flat-V weirs
Hardcopy , PDF
15-03-1999
English
31-08-1990
Committees responsible
National foreword
Method
1. Scope
2. General
3. Normative references
4. Definitions and symbols
5. Installation
6. Maintenance - General requirements
7. Measurement of head(s)
8. Discharge relationships
9. Computation of discharge
10. Errors in flow measurement
11. Examples
Annexes
A. Nomenclature
B. Velocity distribution
C. Bibliography
Tables
1. The range of discharge for three typical flat-V weirs
2. Corrections to the discharge coefficient
3. Summary of recommended coefficients, limitations
and uncertainties
4. Velocity of approach factor in terms of Y1
5. Drowned flow reduction factor Cdr in terms of hpe/he
and Y2
6. Estimated random and systematic uncertainties
7. Estimated random and systematic uncertainties
Figures
1. Triangular profile of a flat-V weir
B.1 Examples of the velocity profile in the approach
channel
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