BS 3680-3A:1980
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
Hardcopy , PDF
10-15-1997
English
04-30-1980
National foreword
Cooperating organizations
Methods
1 Scope and field of application
2 References
3 Terminology
4 Units of measurement
5 Principle of the methods of measurement
6 Selection and demarcation of site
7 Measurement of cross-sectional area
8 Measurement of velocity
9 Computation of discharge
10 Uncertainties in flow measurement
Annexes
A Methods of correcting for sag, pull, slope and
temperature in measuring the width of cross-section
by tape or wire
B Methods of measurement across the cross-section
C Correction for wetted length of wire when measuring
depths with the wire not normal to the surface
D Correction for drift
E Uncertainty of a velocity area measurement
Tables
1 Air line correction
2 Wet-line correction
Figures
1 Computation of discharge from current-meter
measurement - Depth-velocity integration method
2 Computation of discharge from current-meter
measurement - Area-velocity integration method
3 Computation of discharge from float measurement
4 Computation of discharge and mean water-level for
variations of water-level
5 Measurement of cross-section - Angular method
6 Measurement of cross-section - Projection from
opposite bank
7 Measurement of cross-section - Projection from one
bank
8 Measurement of cross-section - Pivot-point method
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