Water Gs=1 1. In a test to determine the discharge coefficient of a 70 by 35 mm Venturi meter, the total weight of water passing through the meter in 5 minutes was 3.5 kN. A mercury differential gage connected to the inlet and throat of the meter showed an average mercury difference during that time of 300 mm.. Determine the actual discharge if the same meter is used later on and a 250 mm difference is then observed. h = 300 mm Mercury, Hg Gs = assume, 4 significant figures

Structural Analysis
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Chapter2: Loads On Structures
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Water
Gs=1
1. In a test to determine the discharge
coefficient of a 70 by 35 mm Venturi meter, the
total weight of water passing through the meter
in 5 minutes was 3.5 kN. A mercury differential
gage connected to the inlet and throat of the
meter showed an average mercury difference
during that time of 300 mm.. Determine the
actual discharge if the same meter is used
later on and a 250 mm difference is then
observed.
Mercury, Hg
Gs = assume, 4 significant
figures
2. The diameter of a 3 meter pipe decreases from 450 mm to 150 mm. If the velocity is to decrease uniformly in a linear manner,
draw the diameter profile at each 500 mm length interval along the pipe. Discharge is 150 liters per second.
Reservoir B
3. A pump draws water at 300 liters per second from reservoir A and lifts it
to reservoir B as shown. The head loss from A to 1 is 20 times the velocity
head in the 200 mm diameter and the head loss from 2 to B is 20 times the
velocity head in the 150-mm diameter pipe. Assume your own reservoir B
elevation then compute for the energy that must be supplied to the pump
in kW if said appurtenance has an efficiency of 80%. Compute also the
pressure at points 1 and 2.
150 mm
Reservoir A
200 mm pipe
Pump
4. The same venturi meter described in number 2 is used to measure the discharge for a length of pipeline that was suspected to
have had water stolen through an illegal connection. Before said suspected illegal connection, a mercury difference of 350 mm
was observed while a mercury difference of 200 mm was observed afterwards. Estimate the stolen volume of water per day.
h = 300
mm
Elevation=-20 m
Point 1
Point 2
Transcribed Image Text:Water Gs=1 1. In a test to determine the discharge coefficient of a 70 by 35 mm Venturi meter, the total weight of water passing through the meter in 5 minutes was 3.5 kN. A mercury differential gage connected to the inlet and throat of the meter showed an average mercury difference during that time of 300 mm.. Determine the actual discharge if the same meter is used later on and a 250 mm difference is then observed. Mercury, Hg Gs = assume, 4 significant figures 2. The diameter of a 3 meter pipe decreases from 450 mm to 150 mm. If the velocity is to decrease uniformly in a linear manner, draw the diameter profile at each 500 mm length interval along the pipe. Discharge is 150 liters per second. Reservoir B 3. A pump draws water at 300 liters per second from reservoir A and lifts it to reservoir B as shown. The head loss from A to 1 is 20 times the velocity head in the 200 mm diameter and the head loss from 2 to B is 20 times the velocity head in the 150-mm diameter pipe. Assume your own reservoir B elevation then compute for the energy that must be supplied to the pump in kW if said appurtenance has an efficiency of 80%. Compute also the pressure at points 1 and 2. 150 mm Reservoir A 200 mm pipe Pump 4. The same venturi meter described in number 2 is used to measure the discharge for a length of pipeline that was suspected to have had water stolen through an illegal connection. Before said suspected illegal connection, a mercury difference of 350 mm was observed while a mercury difference of 200 mm was observed afterwards. Estimate the stolen volume of water per day. h = 300 mm Elevation=-20 m Point 1 Point 2
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