Q2) A trapezoidal wadi 3 m wide and 2:1 side slope is to cross a road...

Q2) A trapezoidal wadi 3 m wide and 2:1 side slope is to cross a road at station 1+120. The drainage area is 50-hectare consisting of bare earth with steep slopes. A concrete box culvert is considered to drain the wadi assuming 15 minutes concentration-time and a 20-years return period.
Determine the minimum width of the culvert to the nearest 10 cm assuming one meter maximum culvert depth, two meter allowable headwater depth, 1% culvert slope (same as the Wadi slope at the area), 25 m culvert length and squared culvert edges with headwall parallel to the embankment

Expert Solution

Ally Wells answered 10 months ago

2. Design a trapezoidal vegetative waterway that has a side slope of 4:1, a slope of...

2. Design a trapezoidal vegetative waterway that has a side slope of 4:1, a slope of 4%, flow equal to Q= 75 cfs, an erosion resistant soil, and the grass mixture grown to 2 inches in height

A trapezoidal channel has a bottom width of 3.25 m and sides with a slope of...

A trapezoidal channel has a bottom width of 3.25 m and sides with a slope of 1 vertical to 1.5 horizontal. The slope of the bed is 1 in 2000 and the depth of water is 1.2 m. a) Using the Manning Formula with n = 0.025, calculate the velocity and the discharge rate of the flow. b) Calculate the Chezy number for the channel and use that to re- calculate the velocity and the discharge rate of the flow....

A trapezoidal channel carrying 280 cfs has a bottom width of 12 ft, side slope of...

A trapezoidal channel carrying 280 cfs has a bottom width of 12 ft, side slope of 2 and a longitudinal bottom slope of 0.001. The critical depth is 2.25 ft and the normal depth is 2.78. The flow depth at the downstream end of this channel is 3.12 ft. Determine which of the statements below is correct. Select one: a. The flow depth decreases in the flow direction. b. None of the above. c. A flow depth of 2.55 ft...

A 3 m tall, 30 m wide, road embankment made of rockfill with a unit weight...

A 3 m tall, 30 m wide, road embankment made of rockfill with a unit weight of 20 kN/m3 is to be constructed over a 30 m thick normally consolidated clay layer resting on a very permeable fracture rock bed. The clay layer has a coefficient of consolidation cv=7 m^2/month, and a unit weight of γsat=18.5 kN/m3. The compression characteristics of the clay are mr=120, and m=12. a) Determine the time required for the remaining consolidation to be 25 mm...

A road of formation width 12 m is to be constructed with side slopes of 1...

A road of formation width 12 m is to be constructed with side slopes of 1 vertical to 2 horizontal in cut and 1 vertical to 3 horizontal in fill. The existing ground surface has a cross fall of 1 vertical to 8 horizontal and it will intersect the formation 1.5 m to the left of the center line and 1.0 m to the right of the center line at two cross sections 20 m apart. Calculate the areas related...

4. A trapezoidal channel of bedwidth6.0m,side slopes are2:1,longitudinal bed slope=10cm/Km, Manning n = 0.025 and the...

4. A trapezoidal channel of bedwidth6.0m,side slopes are2:1,longitudinal bed slope=10cm/Km, Manning n = 0.025 and the critical depth = 0.327 m. If the discharge is doubled, find the corresponding normal water depth and critical slope

A rectangular channel 2 m wide has a bottom slope of 0.01 and a roughness coefficient...

A rectangular channel 2 m wide has a bottom slope of 0.01 and a roughness coefficient of 0.017. A sluice gate 2 m wide is located in the channel. The sluice gate has a contraction coefficient of 0.61 and a discharge coefficient of 0.58. The depth of water just upstream from the gate is 2 m. The depth of water just downstream from the gate is 0.5 m. Determine how far upstream from the gate the depth of water will...

A trapezoidal tough is 10 ft long, 4 ft wide at the top, 2 ft wide...

A trapezoidal tough is 10 ft long, 4 ft wide at the top, 2 ft wide at the bottom and 2 ft deep. If water flows in the 10 ft^3/ min, find how fast the surface is rising, when the water is 6 in deep. How fast the water surface is rising when the water is 1 foot deep.

B. A trapezoidal channel with a bottom width of 4 m and side slopes 4H: 1V...

B. A trapezoidal channel with a bottom width of 4 m and side slopes 4H: 1V carries a discharge of 30 m3 /s. The channel has bed slope= 0.1 % and manning roughness coefficient = 0.015. Determine the following: i. the minimum specific energy ii. the normal depth iii. the critical slope iv. state of the flow in the channel

An army tank 3.9 m wide needs to travel 47 m to cross a minefield. The...

An army tank 3.9 m wide needs to travel 47 m to cross a minefield. The enemy that laid the minefield is known to have a standard practice of randomly placing 160 mines per hectare (10 000 m2). The tank will set off any mine that it passes over. If the tank sets off a single mine then the armour protecting the engine will crack, but the engine will keep working. However, setting off a second mine will damage the...

Question