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length of notch formula. The Francis Formula - Imperial Units. Arc length formula is used to calculate the measure of the distance along the curved line making up the arc a segment of a circle.
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HP 04 HB 02 P 15 ft 045 m B 3 ft 09 m The diagram above shows the parameters H P th and B for a v notch weir as used for open channel flow rate measurement in a v notch weir calculator excel spreadsheet. A suppressed weirs notch width b is equal to the channel width B. Height of the upstream water above the bottom of the weir in feet.
Given b 05 m.
Triangular or V-Notch Weir. H Head of water over the crest. To calculate the flow rate multiply discharge constant with 815. The head correction factor kh is a function of figure 7-6a.
