CameraIcon

SearchIcon

MyQuestionIcon

1

You visited us 1 times! Enjoying our articles? Unlock Full Access!

Hydrology & Irrigation

Lacey’s Regime Theory

A channel des...

Question

A channel designed by Lacey's theory has a mean velocity of 1.28 m/s. The silt factor is unity. The hydraulic mean depth will be ____ m.

4.096

Open in App

Solution

The correct option is A 4.096
$R = \frac{5}{2} (\frac{v^{2}}{f}) = \frac{5}{2} (\frac{{1.28}^{2}}{1})$

$= 4.096 ≃ 4.1 m$

Suggest Corrections

thumbs-up

0

Similar questions

Q. A channel designed by Lacey's theory has a velocity of 0.88 m/sec. The silt factor is 1.1. then hydraulic mean depth will be

Q. A channel designed by Lacey's theory has a mean velocity of 1.1 m/s. The silt factor is 1.1. Then hydraulic mean radius will be

Q. A stable channel is to be designed for a discharge of

Q m^{3 /} s

with silt factor f as per Lacey's method. The mean flow velocity (m/s) in the channel is obtained by

Q. An earthen channel has been designed on Lacey formulae to carry a full supply discharge of

30 m^{3} / s .

The mean velocity of flow at this discharge is:

Q. A launching apron is to be designed at downstream of a weir for discharge intensity of

6.5 m^{3} / s / m .

For the design of launching aprons, the scour depth is taken two times of Lacey scour depth. The silt factor of the bed material is unity. If the tailwater depth is 4.4 m, the length of the launching apron in the launched position is

View More

Join BYJU'S Learning Program

similar_icon

Related Videos

lock

Lacey’s Regime Theory

HYDROLOGY & IRRIGATION

Watch in App

explore_more_icon

Explore more

Lacey’s Regime Theory

Other Hydrology & Irrigation

Join BYJU'S Learning Program

CrossIcon