Compare between most efficient triangular, trapezoidal (y=2), circular and rectangular channels to carry 20+X m 3 /s of flow using Manning’s equation (n=0.03 and slope 1 in 500)? Which one you will select (in ruaral areas of Oman) and why (compare on the basis of B, P, Volume of excavation needed per meter length and other considerations, cost, water loss) x=13.2

Q: PROBLEM 3 Water is to flow at a rate of 30 m³/s in the concrete channel (n = 0.013) with the…

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Q: O A rectangular channel 1.30 wide carries 1.10 m/s of water at a depth of 0.85 m. If a 30-cm wide…

A: Equating specific energy of channel at both section to get elevation of water surface

Q: Plan a rectangular masonry irrigation canal for a discharge of 1.50 m3/s, with channel…

A: Q = 1.5 m3/s  n = 0.02 b/h = 2  b = 2h  w = 0.5m  V = 0.55 to 0.6 m/s  Take average value V =…

Q: For a triangular channel with the horizontal dimension of the side slope is 3 (i.e Z=3), a normal…

A: Horizontal side slope z = 3Normal depth z = 1.45 ftbed slope S = 0.047roughness coefficient n =…

Q: Calculate the normal depth for a rectangular channel with 4 ft width, 10 cfs discharge rate, 0.03…

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Q: b) Using the conditions of best hydraulic trapezoidal section, design a rigid-boundary trapezoidal…

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Q: A rectangular-shaped, weedy excavated channel with width b = 30 ft is laid on a slope of 8 ft/mile.…

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Q: For a trapezoidal channel with base width b = 6.0 m and slope z = 2. calculate the critical flow tie…

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Q: A triangular section has a side slope of s = 2, Manning's n = 0.02, Bottom slope of S0 = 0.005,…

A: (1) It is required to determine the top width of the triangular channel. T=2sy=2×2×2=8 m It is…

Q: For a hydraulically efficient rectangular channel of bed width 5 m, find the hydraulic radius.

A: Bed width = 5 mTo Find :Hydraulic radius :

Q: 4. Determine the reactions at the roller E and pin Fif force 130 Ib is located at point A as shown…

A: ξ Fx=0          Fx=130513        Fx= 50 lb → 1ξ Fy=0

Q: hydraulics *use handwritten    A rectangular channel 5.50 m wide and 1.30 m deep is laid on a…

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Q: • Q = 18 m^ 3 /s • Rectangular channel, 3 m wide • Unfinished form concrete channel • occurs at a…

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Q: Question 2 By referring to Figure 2, calculate; i) Top surface width T, flow area A, wetted…

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Q: A canal transports a flow of 100 m3/s with a depth of 1.5m. This canal is made of concrete (Manning…

A: Q=100 m3secy=1.5 mn=0.012S=0.02%

Measuring site work, Excavation and Piling

Bid drawings typically include very little material about the precise requirements of site work operations, measuring site work and excavation work differs from measuring most other works on a construction project. The actual site work conditions are not provided and also the dimensions of the excavations are not known during the pre-construction phase. The precise measurement of the excavation and backfill of the earth material and topsoil is important for a contractor to decide upon the total cost required for the process. All the works should be carried out under OSHA (Occupational Safety and Health Administration) standards to ensure the safety of the workers.