192 SpillwaysnobelProblem 4.2: The head on the crest of a controlled overflow spillway is 2.1 m.Approach flow velocity is 2 m/s. Total bridge length over the spillway is 50 m.There are 4 rounded piers each 1 m wide. Abutments are rounded. Take K, = 0.01and K₂ = 0.10. Determine:a) the discharges over the spillway crest for the openings of 0.6 m, 0.8 m, 1.0 m,1.2 m, and 1.4 m; andb) the gate opening to transmit Q = 170 m³/s.Answers: a) 118.4 m³/s, 151.6 m³/s, 181.8 m/s, 208.7 m/s, 232.3 m³/s.b) 92.2 cm (by linear interpolation)

Given;Ka = 0.1 and Kp = 0.01 n = 4 v = 2 m/sLs = 50 m

Problem 4.2: The head on the crest of a controlled overflow spillway is 2.1 m. Approach flow velocity is 2 m/s. Total bridge length over the spillway is 50 m. There are 4 rounded piers each 1 m wide. Abutments are rounded. Take K₂ = 0.01 and K₂ = 0.10. Determine: a) the discharges over the spillway crest for the openings of 0.6 m, 0.8 m, 1.0 m, 1.2 m, and 1.4 m; and b) the gate opening to transmit Q=170 m³/s. Answers: a) 118.4 m³/s, 151.6 m³/s, 181.8 m/s, 208.7 m/s, 232.3 m³/s. b) 92.2 cm (by linear interpolation)

Problem 4.2: The head on the crest of a controlled overflow spillway is 2.1 m. Approach flow velocity is 2 m/s. Total bridge length over the spillway is 50 m. There are 4 rounded piers each 1 m wide. Abutments are rounded. Take K₂ = 0.01 and K₂ = 0.10. Determine: a) the discharges over the spillway crest for the openings of 0.6 m, 0.8 m, 1.0 m, 1.2 m, and 1.4 m; and b) the gate opening to transmit Q=170 m³/s. Answers: a) 118.4 m³/s, 151.6 m³/s, 181.8 m/s, 208.7 m/s, 232.3 m³/s. b) 92.2 cm (by linear interpolation)

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

See similar textbooks

Similar questions

2) The top of a Broad-Crested weir block is at an elevation of 724.5ft, which is 4 ft above. the channel bottom. If the weir is 20 ft wide and the flowrate is 400 cfs. Determine the elevation of the reservoir upstream of the weir. Ans: 730.86 ft. (1) Q=400cfs H T Z=724.5 ft = 4 ft.
A rectangular channel of planed timber (n = 0.012) is 1.5 m wide and carries 1.7 m³/s. The depth of flow varies from 1.2 m to 0.9 m at a section 200 m downstream. Determine the following: (a) V₁ and V₂ (m/s), (b) head loss (h₁) between 1 and 2 in meters, (c) slope of EGL, S, and (d) channel bed slope, So.
A 119-degree V-notch-weir was installed to measure the flow in an artificial channel. The crest of the weir is located 2.25m high relative to the channel bed. Depth of overflow above the crest is 0.41m. Determine the discharge in L/s. Neglect velocity of approach. c = 0.58.
32
Water flows under a sharp-edged sluice gate in a 10-ft wide channel. If the upstream depth remains constant at 5 ft, determine the flowrate through the gate when a = 1.2 ft (see figure below). Assume free outflow. ex Y₁ = 5 ft a
6. Determine the discharges in channels having the following sections for y = 6 ft, n = 0.015, and S = 0.0020. d) Parabolic section having a width of 16 ft at the depth of 4 ft.
The channel is subjected to a shear of V = 20 kip. (a) Determine the shear flow at point A. 1.5 im (b) Determine the shear flow at point B. (c) Determine the maximum shear flow in the channel. 4 in. A 8 in. 1.5 in. B 13 in. 1.5 in.
2. Ā sluice gate blocks the flow of water in a rectangular aqueduct with a width of 4.2 m with a flow rate of 16 m3/second. The upstream water depth marked with number 1 is 2.8 m and the downstream marked number 2 has a depth of 0.7 m. What is the magnitude of the force experienced by the floodgate? Fr, 1 1 2
3. A trapezoidal channel has a bed width of 3.0 m and side slope of 1 horizontal: 1 vertical. It carries a flow of 9.0 cms (or m⅔) at a depth of 3.0 m. Find the Froude number of the flow.
A constant head orifice from a tank feeds water into a flume (open channel) 5m in length and 500 mm wide with a rectangular contracted weir (L=200mm) at one end and close at the other end. The orifice diam is 80mm, coef of discharge= 0.92, and a head h=1m. a) Find the maximum head H of the weir.