The sediment confined along and above the bed up to a depth 2d (d being grain size) is treated as bed load.

The sediment confined along and above the bed up to a depth 2d (d be

1.	The sediment confined along and above the bed up to a depth 2d (d being grain size) is treated as bed load.
A.	True
B.	False
Answer» B. False

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Calculate the effective unit tractive force that causes bed load transportation if the unit tractive force produced by the flowing water is 3.20 N/m2. The Manning s coefficient on an unrippled bed is 0.0108 and the actual observed value of Manning s coefficient on ripped channels is 0.0222. Take the value of critical shear stress that is required to move the grain particle as 0.5 N/m2.
Calculate the quantity of bed load transport by using Meyer and Peter formula if the effective tractive force that causes bed load transportation is 2.5 N/m2.
Calculate the corresponding hydraulic mean depth that would exist in the channel if the bed was unrippled. The rugosity coefficient in an unrippled channel is 0.015 and the rugosity coefficient actually observed by experiments on the rippled bed of channel is 0.020. Consider the value of hydraulic mean depth of the channel as 1.5 m.
For the usual turbulent flow, calculate the critical shear stress if the mean diameter of the grain particle of bed material is 0.3 mm.
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The sediment confined along and above the bed up to a depth 2d (d being grain size) is treated as bed load.
Which of the following statement is not correct about sediment load phenomenon and its measurement?
If the width of a river increases, the discharge per unit width will decrease and therefore, sediment carrying capacity will increase.
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Whose equation was the first on the rate of bed load transport?

The sediment confined along and above the bed up to a depth 2d (d being grain size) is treated as bed load.

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