According to US Army Corps, the u/s profile of ogee spillway extends up to _______________
(a) x = 1.27 Hd
(b) x = -1.27 Hd
(c) x = 0.431 Hd
(d) x = -0.431 Hd
The question was posed to me during an interview for a job.
My question is taken from Ogee Spillway topic in division Spillways, Energy Dissipators and Spillway Gates of Irrigation Engineering