Determine the ordinates of 12 hr unit hydrograph

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written 8.2 years ago by

teamques10 ★ 69k

• modified 8.2 years ago

The ordinates of a 4hr unit hydrograph are given below. Determine the ordinates of 12 hr unit hydrograph.

Time (hour)	0	4	8	12	16	20	24	28	32	36	40	44
Ordinates in m3/s	0	24	28	159	184	151	103	64	36	17	6	0

Mumbai University > Civil Engineering > Sem 7 > Irrigation Engineering

Marks: 9M

Year: Dec 2015

irrigation engineering

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written 8.2 years ago by

teamques10 ★ 69k

Given $T_0 = 4hrs.$

$t_0 = 12 hrs.$

Since $t_0$ is an integral multiple of $T_0 (i.e. t_0 = 3T_0)$ , the desired hydrograph can be obtained by taking the sum of the ordinates of three unit hydrographs of 4-hours duration, each lagging from the other by 4-hours, and dividing the …

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