Question

A bridge is planned on a 6 m wide rectangular channel carrying a flow of 14...

A bridge is planned on a 6 m wide rectangular channel carrying a flow of 14 m3/s at a flow depth of 0.82 m. For reducing the length of the bridge, what is the minimum channel width such that the u/s water level is not influenced for this discharge?

Group of answer choices

A. None of them correct

B. The width can be reduced by one-third

C. The width can be reduced by half

D. There will be no reduction of bridge possible.

Homework Answers

Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
The flow in a very wide rectangular channel tends to a freefall at which the depth...
The flow in a very wide rectangular channel tends to a freefall at which the depth is reduced to 0.67 times the normal depth. The channel conveys a specific discharge of 4 m3/s/m and has a bed slope of 10 cm/km. Estimate the distance upstream of the fall where the water depth is 0.9 times the normal depth. Take the Manning coefficient as 0.025 and use the step-by-step (direct step) method.
Find critical depth of a 2 m wide rectangular channel if the flow rate passing through...
Find critical depth of a 2 m wide rectangular channel if the flow rate passing through it is 3 m3/s.
A rectangular channel has a width of 9.8 m and a flow discharge of 48 m3/dt....
A rectangular channel has a width of 9.8 m and a flow discharge of 48 m3/dt. Slope of the channel bottom is 0.0018 and manning coefficient is 0.037. Calculate normal water depth and critical water depth
During a flood flow, the depth of flow in a 10 m wide rectangular channel at...
During a flood flow, the depth of flow in a 10 m wide rectangular channel at 2 sections 200 m apart was found to be 3.0 m and 2.9 m. respectively. The drop in the water surface elevation was found to be 0.12 m. Estimate the flood discharge through the channel. Assume n = 0.025.
The discharge through a rectangular channel 4.4 m wide is 16 m3/s. The Manning’s coefficient n...
The discharge through a rectangular channel 4.4 m wide is 16 m3/s. The Manning’s coefficient n is 0.003. Determine the normal depth when the slope is 0.008. Check whether the flow is sub or supercritical. If the normal depth is to be kept at 2 m, determine the slope.
A rectangular channel 6.20 m wide and 1.20 m deep is laid on a uniform slope...
A rectangular channel 6.20 m wide and 1.20 m deep is laid on a uniform slope of 0.003. The roughness coefficient of the channel is 0.013 m. a. Determine the discharge in the channel in m3/sec. b. Determine the savings in the lining per meter length of channel if the most efficient rectangular section is to be used for the same flow and properties. c. Determine the savings in earth excavation per meter length of channel if the most efficient...
A 3‐m wide prismatic rectangular channel (S=0.005m/m) collects stormwater runoff in Jackson, MS. During a storm...
A 3‐m wide prismatic rectangular channel (S=0.005m/m) collects stormwater runoff in Jackson, MS. During a storm event the flow discharge reaches 15‐m3/s and a depth of 3.6‐m. If the channel bottom is 1‐ft above the reference datum, determine the total energy head for the specified flow conditions.
Water flows in a rectangular concrete channel that is 10 m wide and has a slope...
Water flows in a rectangular concrete channel that is 10 m wide and has a slope of 0.005. The depth of the uniform flow in the channel (y1) is 450 mm and the discharge per width of the water is 2.2 m2/s. The downstream channel is smooth, and a hydraulic jump is forced to form in the channel by installing a sill. Calculate: (i) the depth and velocity of the water downstream of the hydraulic jump; (ii) the difference in...
Water approaches a sharp-crested rectangular weir through a channel that is 2 m wide. The depth...
Water approaches a sharp-crested rectangular weir through a channel that is 2 m wide. The depth of flow in the channel is 1 m. The weir crest is 0.6 m above the base of the channel and has a crest width of 0.8 m. It is located in the centre of the channel. Assuming a coefficient of discharge of 0.61, and ignoring side contractions, determine the discharge over the weir: a) Assuming the approach velocity is zero b) Including the...
A vertical sluice gate in a long rectangular channel 5 m wide is lowered to produce...
A vertical sluice gate in a long rectangular channel 5 m wide is lowered to produce an opening of 1.0 m. Assuming that free flow conditions exist at the vena contracta downstream of the gate verify that the flow in the vena contracta is supercritical when the discharge is 15 m3/s, and determine the depth just upstream of the gate. Cv = 0.98; Cc = 0.6. Take the upstream velocity energy coefficient (Coriolis) to be 1.0 and that at the...