p) A reservoir has a plan area of 100,000 m². The discharge from the reservoir passes over a long rectangular broad-crested weir similar to that shown in Figure 1 below and having the following dimensions: b = 15 m, Ps = 1.1 m, L= 2 m. i) Determine a coefficient of discharge for this weir and use it to estimate the discharge over it if the reservoir level is 1.5 m above the weir crest. ii) If there is no inflow into the reservoir, estimate the time taken for the reservoir level to fall from 1.5 m to 1.0 m above the weir crest. Assume that Ca remains constant.

p) A reservoir has a plan area of 100,000 m². The discharge from the reservoir passes over a long rectangular broad-crested weir similar to that shown in Figure 1 below and having the following dimensions: b = 15 m, Ps = 1.1 m, L= 2 m. i) Determine a coefficient of discharge for this weir and use it to estimate the discharge over it if the reservoir level is 1.5 m above the weir crest. ii) If there is no inflow into the reservoir, estimate the time taken for the reservoir level to fall from 1.5 m to 1.0 m above the weir crest. Assume that Ca remains constant.

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

Why cross drainage works are constructed? Enlist different types of cross drainage works. and describe each cross drainage work.
2. The depth of water over the weir was 5m. If the total discharge through the weir was 1,000,000 m², how long did the flow over the weir last if a trapezoidal weir is used with its sides making an angle of 70° with the horizontal and the weir has a length of 200m.
25. Determine the discharge of the weir having a head of 0.6 m in L/s if a 51⁰ triangular weir is used. Assume C = 0.62175 L/s180 L/s195 L/s200 L/s
Q13: A sharp crested weir of Im height is fixed across 5m wide channel as shown in the following figure. The depth of flow on the upstream and downstream sides of the weir is 1.5m and 1.2m respectively. Find the discharge over the weir. y=15m H Water level W-1 m HA y = 1.2m
Compute the diameter (cm) of the outfall required to drain storm water from the watershed described in figure below. Use rainfall intensity = 4 cm/hr. Average velocity of flow is 1 m/s. Other data are for: Area 1: C=0.5, area=0.005 km2. Area 2: C=0.4, area =0.01 km2. Area 3: C=0.7, area=0.015 km2.
Three reservoirs are connected respectively with pipes 1, 2 and 3 joining at a common junction P. Reservoir B is at elevation 300 m and reservoir C is at elevation 277 m. Pipe 1 is 800 mm in diameter and 800 m long, pipe 2 is 600 mm in diameter and 500 m long and pipe 3 is 400 mm in diameter, 800 m long. Reservoir A supplies 560 liters per second to reservoirs B and C. What is the flow in pipe 2? Neglect minor losses and assume f=0.25 for all pipes. Select one: O a. 179 liters per second O b. 354 liters per second O . 132 liters per second O d. 231 liters per second
Three reservoirs are connected respectively with pipes 1, 2 and 3 joining at a common junction P. Reservoir B is at elevation 300 m and reservoir C is at elevation 277 m. Pipe 1 is 800 mm in diameter and 800 m long, pipe 2 is 600 mm in diameter and 500 m long and pipe 3 is 400 mm in diameter, 800 m long. Reservoir A supplies 560 liters per second to reservoirs B and C. Neglect minor losses and assume f=0.25 for all pipes. What is the flow in pipe 3? Select one: O a. 329 liters per second O b. 428 liters per second O c. 381 liters per second O d. 206 liters per second
2. Reservoir A, B, and C are connected by pipelines 1, 2, and 3 respectively which meets at the junction x. the elevation of reservoir A is 300 m, reservoir B is 302. 5 m, ad reservoir C is 277 m. A) Compute the flow rate at reservoir A B) Compute the flow rate at reservoir B C) Compute the reservoir C VEL 300 m Qa=0.19326 m³/s Qb = 0.3476 m/s (giver) Qc = 0.5408 m/s LEL 302.5 m VEL 277 m Pipe 1 2 3 0.0208 0.0168 0.0175 diameter (mm) 900 600 450 Length (m ) 800 1200 1000
Given the reservoir and sections shown below, determine what is asked for. Show complete and detailed solutions. Draw a figure also.
In the vertical wall of a reservoir (A) there is a drowned hole that it flows into another reservoir (B) with a real discharge speed of 4,5m/s. This one reservoir (B), in turn, has a square orifice with free discharge of the form shown in the figure. It requires a flow of 0,089 m³/s and there is no overflow of the system. Determine determine the area and edges of orifice 2. (See the image) Data: Orifice diameter 1 = 0.2m; Discharge coefficient for orifice 2 = 0.604; contraction coefficient for orifice 2 = 0.64. Consider both holessmall in relation to the depth of the reservoirs.
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