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

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.

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

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  1. 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

  2. Trapezoidal Lined Canals

  3. Rectangular-Throated Structures

  4. Weirs in Pipes and Culverts

  5. 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

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