For water supply to a town, water is pumped from the river 3km away into a reservoir. Themaximum difference of levels of water in the river and the reservoir is 20m. Thepopulation of the town is 50000 and the average per capita water demand is 120 /d. If thepumps are to operate for a total of 8 hours and the efficiency of pumps is 80%, determinethe horsepower of the pumps. Assume f = 0.03, the velocity of flow as 2 m/s andmaximum daily demand as 1.5 times the average daily demand. Commercially availablepipe diameters are: 300, 400, 450 and 500 mm.

Information from the Image:Pile Type: Closed-end, driven pipe pile, concrete filled (refer to Figure…

Answered: For water supply to a town, water is…

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

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6 Water has to be supplied to a town with 100000 population at the rate of 150 litre/capita/day from a river 2000 m away. The difference in elevation between the lowest water level in the sump and reservoir is 40 m. If the demand has to be supplied in 8-hours, determine the size of the main and the brake horse power of the pumps required. Assume maximum demand as 1.5 times the average demand Assume f = 0.03, velocity of pipe = 2.4 m/s and efficiency of pump = 80%.
A pump is being utilized to deliver a flow rate of 500 li/sec from a reservoir of surface elevation of 65 m to another reservoir of surface elevation 95 m. The total length and diameter of the suction and discharge pipes are 500 mm, 1500 m and 300 mm, 1000 m respectively. Assume a head lose of 2 meters per 100 m length of the suction pipe and 3 m per 100 m length of the discharge pipe. What is the required horsepower of the pump?(PLEASE INCLUDE DRAWING) USE BERNOULLI'S ENERGY EQUATION
A city has a population of 150000. Water is to be supplied at the rate of 160 litres per head per day. If the static lift of the pump is 40 meters, calculate the BHO of motor. The rising main is 300 m long and motor efficiency is 85%, pump efficiency is 60. f-0.04 and the peak hour demand is 1.5 times the average demand.
Two reservoirs (El 23.1m and El 95.5m) are connected by two pipelines 1-2 and 2-3 with a pump bridging the two pipelines. If the fluid (s.g=0.85) flows at a rate of 206 L/s, what is the power given by the pump? Assume head losses of 1.1 J/N from 1-2 and 5.6 J/N from 2 to 3
Example4 A centrifugal pump is used to raise the water from the river to the reservoir, find: 1) total dynamic head. 2) water power, pump power and motor power. 3) monthly cost pump operation, if power cost is 4 cents and pump operates 20 hr/day. If:- 1. Q= 1.9 m/min 2. Elevation between the reservoir and the pump is 25 m and the length of the pipe is 365 m 3- Diameter of suction lift and discharge pipes 200 mm and length of suction lift is 10 m. 4- Barometric pressure is 88 Kpa, vapor pressure 2.5 Kpa 5- NPSH). = 40 Kpa 6- Efficiency of pump and motor is 80%. 7. Neglect minor losses 8- Use f = 0.02, Y= 10 Kn/m
Two reservoirs (EI 37.6m and EI 91.6m) are connected by two pipelines 1-2 and 2-3 with a pump bridging the two pipelines. If the fluid (sg=0.81) flows at a rate of 203 L/s, what is the power given by pump? Assume head losses of 2.3 j/n from 1-2 and 6.5 j/n from 2 to 3
The pump draws water at 30 liters per second from reservoir A and lifts it to reservoir B as shown. The head loss from A to 1 is three times the velocity head in the 150mm diameter pipe and the head loss from 2 to B is twenty times the velocity head in the 100mm diameter pipe. Which of the following most nearly gives the powet delivered by the pump? Choices: 59.38 kW 75.14 kW 44.82 kW 53.96 kW
PLEASE PUT ALL THE DECIMAL PLACES. THANK YOU The average hourly water consumption per person is 2.5 Liters anf there are 264 people in the area. Determine the following. a. the minimum rate of flow in L/s in the spring b. Total Daily water demand in L/day c. The daily yield is sufficient to the water demand of the community if the rate of flow is 0.182 L/s d. the height of the cylinder in cm thatt the minimum discharge can fill within 300 secs. diameter of the cylinder is 10 cm.
Question 5) A city population in years 1990 and 2000 is 120000 and 190000, respectively. Water demand will be supplied from reservoir. Mean daily consumption, meangday is 150 1l/capita'day. Maximum allowable pressure on the pipeline, ( = 100m Minimum pressure of transmission line, 15 4 max. line min.line m. Pump station is working 24 hours a day. According to ILBANK for population in 2035, determine power of the pump for two different cases. Elevations and pipe diameters are given in Figure. a) In the first case, pump is located between BC, b) In the second case, pump is located at Point (A). 170 155 1000 m O 350 1000 m O 350 123 120 120 500 m A-0,018 Tank D A Ф350
Apply Hazen William’s Equation to the pumped system shown in the following figure, having a pumping head of 77 mwc. Determine diameter of the pipe to deliver a flow of Q =4000 m 3 /hr maintaining pressure of 50 mwc at the entrance of the city through a pipe of L =1200m having Hazen William’s roughness coefficient C=120. Also calculate increase in the flow when the pressure at the entrance of the city drop to 40 mwc.
5. Water is pumped 14.5 km from a reservoir at elevation 30 m to another reservoir at elevation 70 m. The steel pipeline connecting the reservoirs has a nominal diameter of 1400 mm (the actual inside diameter is 1372 mm) with C = 90. If the flow is 1.18 m3/s, the pumping efficiency is 82%, and electricity costs $0.14/kWh. Assuming that the density of water is 1000 kg/m3, what will be the monthly power bill? Sketch the hydraulic and energy grade lines.
For a town with a population of 2 lakhs, a water supply scheme is to be designed. The maximum daily demand may be assumed as 200 litre/capita/day. The storage reservoir is situated 5 km away from the town. Assuming loss of head from source to town as 10 m and coefficient of friction for the pipe material as 0.012, recommend the size of supply main 50% of daily demand has to be pumped in 8 hours for the proposed scheme.

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