Show all steps:1) A river is 100 m wide and 8 m deep. The bed slope is 1m per 2 km. The median sediment size is 10 mm.Estimate (a) the critical shear stress, (b) the sediment bedload using the Du Boys equation and (c) the minimumstable sediment size.Ans: a) 9.06 N/m^2 b) 0.15 m^3/s c) 37.5mm2) Further downstream, the river in Problem 1 traverses aplain where D50 = 0.5 mm. Estimate the total sedimentload. River dimensions are unchanged, Manning's n =0.02.Ans: 1.38 m^3/s (using Ackers-White)

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1) A river is 100 m wide and 8 m deep. The bed slope is 1 m per 2 km. The median sediment size is 10 mm. Estimate (a) the critical shear stress, (b) the sediment bed load using the Du Boys equation and (c) the minimum stable sediment size.

1) A river is 100 m wide and 8 m deep. The bed slope is 1 m per 2 km. The median sediment size is 10 mm. Estimate (a) the critical shear stress, (b) the sediment bed load using the Du Boys equation and (c) the minimum stable sediment size.

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

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Concept explainers

Principles of Seepage

In hydrology, when water flows down in a pore or crack of unsaturated soil due to gravity, the deep layer of soil is called seepage. It is the slow movement of water in the soil layer. Seepage is mainly found near hydraulic structures and is responsible for the stability of earthen-type hydraulic structures.

Question

Show all steps:
1) A river is 100 m wide and 8 m deep. The bed slope is 1
m per 2 km. The median sediment size is 10 mm.
Estimate (a) the critical shear stress, (b) the sediment bed
load using the Du Boys equation and (c) the minimum
stable sediment size.
Ans: a) 9.06 N/m^2 b) 0.15 m^3/s c) 37.5mm
2) Further downstream, the river in Problem 1 traverses a
plain where D50 = 0.5 mm. Estimate the total sediment
load. River dimensions are unchanged, Manning's n =
0.02.
Ans: 1.38 m^3/s (using Ackers-White)

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