8.5 A small reservoir has a spillway crest at elevation 200.00 m. Above this elevation, the storage and outflow from the reservoir can be expressed as Storage: S=36000 - 18000 y (m³) Q=10y (m³/s) Outflow: where y= height of the reservoir level above the spillway crest in m. Route an inflow flood hydrograph which can be approximated by a triangle as 1=0 at 1=0 h 1-30 m³/s at 1-6 h (peak flow) 1=0 at 1=26h (end of inflow). Assume the reservoir elevation as 200.00 m at r=0 h. Use a time step of 2 h.

8.5 A small reservoir has a spillway crest at elevation 200.00 m. Above this elevation, the storage and outflow from the reservoir can be expressed as Storage: S=36000 - 18000 y (m³) Q=10y (m³/s) Outflow: where y= height of the reservoir level above the spillway crest in m. Route an inflow flood hydrograph which can be approximated by a triangle as 1=0 at 1=0 h 1-30 m³/s at 1-6 h (peak flow) 1=0 at 1=26h (end of inflow). Assume the reservoir elevation as 200.00 m at r=0 h. Use a time step of 2 h.

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

8.5 A small reservoir has a spillway crest at elevation 200.00 m. Above this elevation, the storage and outflow from the reservoir can be expressed as Storage: S = 36000-18000 y (m³) Outflow: where Q=10 y (m³/s) y= height of the reservoir level above the spillway crest in m. Route an inflow flood hydrograph which can be approximated by a triangle as 1=0 at /=0 h 1-30 m³/s at 1-6 h (peak flow) I=0 at 1=26 h (end of inflow). Assume the reservoir elevation as 200.00 m at t=0 h. Use a time step of 2 h.
Example 12.3. A small reservoir has a spillway crest elevation 200.0 m. Above this elevation, the storage and outflow from the reservoir can be expressed as: Storage: S=36000 + 18000y m³, Outflow Q=10y m³/s, where y is height of water above spillway crest in m. Route an inflow hydrograph which can be approximated by a triangle as: 1=0 at t=0, 1=30 m³/s at t=6 h and I = 0 at t = 26 h Assume at t= 0.y=0 and use At = 2 h
(a) Route the inflow hydrograph given below through a reservoir. The storage data (surface elevation versus storage volume) for the reservoir are also given below. The spillway discharge is expressed by the equation (Q = 3 LH2). The crest height of the spillway is 50 ft. and the length of the spillway is 35 ft. Inflow Hydrograph: Time (days) Inflow (ft/s) 0 70 185 360 0 0.5 1 1.5 |2 2.5 3.0 3.5 4.0 480 300 165 80 0 Storage Data: Elevation (ft.) Storage (acre-ft.) 50.0 50.5 51.0 51.5 52.0 52.5 53.0 53.5 231 247 277 313 353 400 452 509 (b) A simple reservoir has a linear storage indication curve defined by Q/2 =S/At, where At 1.0 hr. If S at 8 A.M. is zero f/s-hr, use the continuity equation to route the following hydrograph through the reservoir. Time (hr) Inflow (ft'/s) 8 A. M. 10 A. M. 80 11 A. M. 1 P.M. 9 А. М. 12 Noon 40 65 110 120 170
Three reservoir have pipes that meet at a point of elevation 0 m. Their characteristics are as shown, using n = 0.01, determine the flow of water in cu.m./sec at the pipe reservoir A.
HW12: The inflow hydrograph to a reservoir river (at section 1) is given in Table 12.1. The head water-discharge relationship for the outlet structure of the reservoir is S = 1800Q, where Q is the discharge from the reservoir (m/s), and S is the storage of the reservoir (m'). The proportionality coefficient and weighting factor of this river reach are 1.2 hr and 0.2, respectively. At time 0 hr, the discharge at sections 2 and 3 are 10 m/s. a) Determine the maximum streamflow at section 3. b) Determine reservoir storage at time 6 hr. c) Determine river storage at time 5 hr. (2) zivos Table 12.1: Time Inflow (m³/s) 10 20 60 (hr) 1 3 130 4 100 5 90 6. 80 7 60 8 40 9. 20 10 10
Q2 The storage, elevation and outflow data of a reservoir are given below. Elevation (m) Storage 106 x m³ Outflow discharge m³ 299.50 4.8 300.20 5.5 300.70 6.0 15 301.20 6.6 40 301.70 7.2 75 302.20 7.9 115 302.70 8.8 160 The spillway crest is at elevation of 300.2. The following flood flow is expected to into reservoir Time (h) 3 9. 12 15 18 21 24 27 Discharge m³/s 10 20 52 60 53 43 32 22 16 10 If the reservoir surface is at elevation 300m at the commencement of the inflow route the flood to obtain (a) the outflow hydrograph (b) the reservoir elevation vs time curve.
Question 2 Route the inflow hydrograph through a reservoir as indicated in Table 2. The crest height of the spillway is 50 ft and storage capacity at this level is 116 ft3/s-day. The reservoir routing curves graph is given in Figure 1. Perform calculation until the outflow value is equal to zero. Based on the obtained result, plot the inflow and outflow hydrographs. Table 2 0.4 1.6 2 2.4 2.8 Time (day) 0 Flow (ft³/s) 0 0.8 120 1.2 229 56 380 268 155 50 Figure 1 25/atO (ft/s.day)-primary x-axis 700 800 900 1000 54.0 53.5 53.0 52.5 52.0 51.5 Elevation vs Storage (curve a) Elevation vs 25/De-O (curve b) Elevation vs Outflow (curve c) 51.0 50.5 50.08 49.5 110 230 0 Water Surface Elevation (tt) 400 W 500 130 100 600 150 200 190 170 210 Storage (ft³/s.day) - secondary x-axis 300 400 500 Outflow (ft³/s.day) - tertiary x-axis 600 250 1100 700
A reservoir discharges through a sluice 0.915 m wide by 1.22 m deep. The top of the opening is 0.61 m below the water level in the reservoir and the downstream water level is below the bottom of the opening. Calculate (a) the discharge through the opening if Cd= 0.60 and (b) percentage error if the opening is treated as a small orifice.
Two reservoirs are connected with a cylindrical pipe. . What is the velocity at A?' . What is the flow rate at A? . Suppose the depth of location A is no longer at 0.5 m, but rather its depth, y, can vary relative to the bottom of the pipe. Solve in general for VA in terms of the reservoir water level elevations (Z and Z2) and demonstrate mathematically that VA does not depend on y. 5m 4 m 1m A Io5m 3 m 2 m
2.Water exits a reservoir through a 1-Km long D=?mm diameter horizontal Tunnel as shown below. The entrance is sharp-edged, and the discharge is to the lower reservoir. If the flow rate is 2 CMS, What tunnel diameter is required to achieve the desired flow rate if local losses are neglected? Upper reservoir Tunnel = 1 km 23 m Lower reservoir
Three Reservoir, named A, B, and C are connected by Pipe 1, Pipe2, and Pipe 3 respectively joining at a common junction. Determine the into or out of the reservoir A, B, and C in the pipe system, given the following data: Use n=0.011 for all pipes, hf=10.29n^2LQ^2/D^16/3 Reservoir A (EL 30m), Reservoir B (EL 24m), and Reservoir C (EL 15m) Pipe1: 30cm dia., 1200m long Pipe2: 20cm dia., 900m long Pipe3: 15cm dia., 1500m long
(b) A simple reservoir has a linear storage indication curve defined by Q/2 = S/At, where At = 1.0 hr. If S at 8 A.M. is zero ft³/s-hr, use the continuity equation to route the following hydrograph through the reservoir. Time (hr) 9 A. M. 11 A. M. 12 Noon 120 Inflow (ft³/s) 65 110 8 A.M. 40 10 A. M. 80 1 P.M. 170