Using Francis Formula, Compute The Discharge of a Rectangular

Using Francis formula, compute the discharge of a rectangular weir 40 cm long with a head of 10 cm having no end contraction. [A] 3.35 lit/sec [B]

Using Francis formula, compute the discharge of a rectangular weir 40 cm long with a head of 10 cm having no end contraction.





The correct answer for Using the Francis formula, compute the discharge of a rectangular weir 40 cm long with a head of 10 cm having no end contraction is [B] 23.27 lit/sec

Francis formula for Calculation using

Q = 1.84*L*(((Hi+Hf)^1.5)-(Hf^1.5))

Given Data is L = 40 cm, Hi = 10 cm, Hf = 0 cm

Apply data in Francis formula

Q = 1.84*40*(((10+0)^1.5)-(0^1.5))

Q = 23.27 lit/sec


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