The velocity of flow in a channel should not more or less, but instead it should be adequate.

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Given to design the irrigation channel to carry 80 cumecs of discharge. The channel slope is 1 in 3000. The critical velocity ratio is 1.3. Take rugosity coefficient as 0.021.

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Based on his research what factor is given by Kennedy for free silting and scouring actions in a channel?

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Design a regime channel for a discharge of 90 cumecs and silt factor is 1.3 use Lacey’s Theory.

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What is the effect of scouring in channels?

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According to Kennedy the silting action in channels is due to?

asked Aug 15, 2023 in Irrigation Engineering by Carter (75.2k points)

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What is the effect of silting in channels?

asked Jul 31, 2023 in Irrigation Engineering by Carter (75.2k points)

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At low velocity, the bed does not move at all but as velocity increases, it goes on assuming different shapes.

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On what condition does the resistance equations of Chezy’s formula and manning’s formula are applicable?

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On what basis for designing the regime state is obtained?

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The manning’s coefficient for a lined trapezoidal channel with a bed slope of 1 in 4000 is 0.014 and it will be 0.028 if the channel is unlined. The area in the case of the lined section is 19.04 m^2 and for the unlined section is 29.09 m^2. What percentage of earthwork is saved in a lined section relative to an unlined section, when a hydraulically efficient section is used in both the cases?

asked Jul 31, 2023 in Irrigation Engineering by Carter (75.2k points)

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Given that the bed slope of a channel is 1 in 2000 and the discharge is 60 cumecs. The depth of the channel is fixed and is given as 2 m. The tractive force needed for the movement of bedload is? Take critical velocity ratio as 1.1.

asked Jul 31, 2023 in Irrigation Engineering by Carter (75.2k points)

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A wide unlined channel carrying silt-free water has a depth of 2.0 m. The maximum slope that can be given to a channel is 1 in 10,000. Calculate the maximum tractive stress permissible on the bed to prevent scouring.

asked Jul 31, 2023 in Irrigation Engineering by Carter (75.2k points)

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In a wide stream, a suspended load sample taken at a height of 0.30 m from the bed. The stream is 5.0 m deep and has a bed slope of 1/4000. The bed material can be of uniform size. Estimate the shear friction velocity.

asked Jul 31, 2023 in Irrigation Engineering by Carter (75.2k points)

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A pump was installed in a field to supply water to the crops. The duty for this crop is 432 hectares/cumec on the field and the efficiency of pump is 50%. The sown area of the field is 5 hectares. Determine the maximum output required (H.P) of the pump, if the highest water level is 4 meters below the highest portion of the field. Assume negligible field channel losses.

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What is the minimum size of the bed material that will remain at rest in a channel?

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Kor demand of the crop should be taken into account while fixing the capacity of a canal.

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For the design of non-scouring channels in coarse alluviums, the shield’s entrainment function should be ____________

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Design a channel carrying a 30 cumecs. The median grain diameter is taken as 0.5 mm. The bedload concentration is 60 p.p.m by weight. Use Lacey’s Regime perimeter and Meyer-peter’s formulas.

asked Jul 29, 2023 in Irrigation Engineering by Carter (75.2k points)

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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.

asked Aug 19, 2023 in Irrigation Engineering by Carter (75.2k points)

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Water in which condition or state carry a maximum amount of sediment?

asked Aug 15, 2023 in Irrigation Engineering by Carter (75.2k points)

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