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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.
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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
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