flm tables

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Pre-Computed Flume Tables Water Measurement Manual, pg. 8-24 to 8-41 Trapezoidal lined canals Broad-crested weir with trapezoidal control section shape (a.k.a. “Replogle flume or weir”) Earthen canals Structures with a rectangular control section shape Circular pipes, culverts, etc. Broad-crested weir composed of a ramp and sill in a circular pipe

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Tablas tipo para los canales con seccion de control

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Page 1: Flm Tables

Pre-Computed Flume TablesWater Measurement Manual, pg. 8-24 to 8-41

• Trapezoidal lined canals– Broad-crested weir with trapezoidal control section

shape (a.k.a. “Replogle flume or weir”)

• Earthen canals– Structures with a rectangular control section shape

• Circular pipes, culverts, etc.– Broad-crested weir composed of a ramp and sill in a

circular pipe

Page 2: Flm Tables

Trapezoidal Lined Canals

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Rectangular-Throated Structures

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Page 7: Flm Tables

Weirs in Pipes and Culverts

Page 8: Flm Tables
Page 9: Flm Tables

Using the Tables• Pre-computed designs already ensure:

– Froude number less than 0.5

– Adequate measurement accuracy at Qmin

– Adequate measurement accuracy at Qmax

• User must check:– Freeboard at Qmax

– Submergence at Qmax

– Submergence at Qmin

– Lengths of flume components