Need help asap. How to com up with h + 17.75 on the highlighted part? Thank you. 35. An overflow masonry dam is to be constructed across a stream. Thestream is estimated to have a maximum flood discharge of 850m²/swhen the elevation of the water surface is 345m at the dam site. Sixsiuice gates each 2.5m high and 2m wide are to be constructed in thedam with their sills at elevation 342m. The main overflow weir for whichC = 1.45 will be 60m long with a crest elevation at 360m. An auxillaryweir 180m long with a crest elevation at 361m will operate during floods.For this weir C = 1.88. With all the sluice gates open, what will be thesurface elevation upstream of the dam when the discharge is 850 m³ /s?c 1.88w.S.GIVEN:c 1.45h+1Qr = 850Q,Q2c 0.6Q,h, 4 2.5m42 = 60mL3 = 180mC= 1.88E45SOLUTION:3Q1 = CA/2gh = 0.6(2)(2.5),/19.62(h+ 17.75)(6) = 79.73004453(0.88)ž%3D33Q2 = CL2H27 = 1.45(60)(h + 1)7 = 87(h + 1)7%3D3Q3 = CL3H37 = 1.88(180)(h)ĩ = 338.4h.%3D%3D13Qr = Q1 + Q2 + Q3 = 850 = 79.73(h + 17.75)z + 87(h + 1)ž + 338.4h7%3DLet h = 0.8933850= 79.73(0.89 + 17.75)ē + 87(0.89 + 1)ž + 338.4(0.89)7850< 854.4097694361 m.360m.

Solution-Calculate the discharge Q1 as shown…

35. An overflow masonry dam is to be constructed across a stream. The stream is estimated to have a maximum flood discharge of 850m²/s wrhen the elevation of the water sSurface is 345m at the dam site. Six sluice gates each 2.5m high and 2m wide are to be constructed in the dam with their sills at elevation 342m. The main overflow weir for which

35. An overflow masonry dam is to be constructed across a stream. The stream is estimated to have a maximum flood discharge of 850m²/s wrhen the elevation of the water sSurface is 345m at the dam site. Six sluice gates each 2.5m high and 2m wide are to be constructed in the dam with their sills at elevation 342m. The main overflow weir for which

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. A contracted rectangular sharp-crested weir 6ft long discharges water under a head of 1.55ft. Compute the discharge by the Francis formula.
The length of the crest of a trapezoidal weir is 2m. the sides are sloping at 75 degrees 57' 49" with the horizontal, if the head on the weir is 0.5 m, 1. Prove if it is a Cipolleti weir or not 2. Find the discharge in cu. m/s
The discharge over a trapezoidal weir is 1.315 m%/s. The crest length is 2 m and sides are inclined at 75?4°57’50” with the horizontal. Find the head over the weir. a. 0.5 m b. 0.7 m c. 0.8 m d. 0.6 m
9. A symmetrical trapezoidal weir with side slope of 1H to 3V Has water following through it. If the head is 0.65m and the crest length is 6.25m find the nearest discharge if C= 0.62 10. a spillway controls a reservoir 4.6 hectares in area. The permanent crest is at elevation 75m. If water can be drawn from elevation 76.5m to elevation 75.5m in 42 minutes. Find the length of the spillway. Use Francis formula neglecting velocity of approach.
J-A contracted weir 1.31 m long and 1:26m high is to be installed in a channel 2.45 m wide. The depth of water backk OF the weir is 2.14m. a) What is the amount OF flouw neglecting the velocity of approach. 6.) What is the amount op flow considering the velocity of approach". d What is the velocity OF approach?
A trapezoidal weir having side slope of 1Horizontal to 2Vertical discharges 50 m3/s under a constant head of 2m. Find the length of the weir assuming C=0.60.
The discharge over a trapezoidal weir is 1180 L/s. The crest length is 1.5m and the side slope of the trapezoid is 4 vertical and 1 horizontal. Determine the head on the weir in meters.
The discharge over a trapezoidal weir is 1180 L/s. The crest length is 1.5m and the side slope of the trapezoid is 4 vertical and 1 horizontal. Determine the head on the weir in meters. A 0.501 m B 0.606 m 0.564 m D No Answer among the choices E) 0.452 m
3. A sharp crested, suppressed weir is under a head of 0.67m. The weirs length is 3m and its height is 1.22m. a. Determine the discharge coefficient Cw. Cw=0.611 + (0.075H/P) b. Determine the flow rate of water over the weir. C. If the weir is submerged and the downstream water surface is 0.30m above the top of the weir, determine the flow rate of the water over the weir. Ans: a: 0.6522, b: 3.169m³/s, c: 2.763m³/s
water flows over a triangular 90-degree weir at a depth of 1.16m and afterward passes through a trapezoidal weir 4.60m wide at the bottom and 8.90 wide at the top with a side of 1.6 with the vertical and 2.6 with the horizontal. If coefficient of discharge for trapezoidal is 0.659 and four triangular is 0.885, find the depth (in m) over the trapezoidal weir
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.
A rectangular contracted weir 3m long is built in the left end of a rectangular channel 6m wide. How high is the weir if the depth of water upstream is 1m when the discharge is 1.15 m3/s. Neglect velocity of approach and use weir factor =1.65. 0.62 m O 0.73 m O 0.51 m O 0.38 m