You are in charge of evaluating a segment of aqueduct pipe (diameter: 30cm). You know that pt. A has a measured pressured of 500 kPa. You must : a) Determine the head-loss between points A and B if they are separated by 100m, that the pipe has a flow of 175 V/s and that the Hazen-Williams coefficient is 100 (see figure 3) b) Calculate the absolute roughness (&). Presume that the water temperature is 15oC. A Figure 3 Aqueduct pipe B c) We wish to limit head-loss to 10 kPa, all the while transporting the same flow between points A and B. To do this, it has been suggested that a second pipe could connect these two points (see figure 4). You must determine this second pipe's diameter knowing that the total length of this secondary pipe is 135m and has the same Manning coefficient as the first pipe.
You are in charge of evaluating a segment of aqueduct pipe (diameter: 30cm). You know that pt. A has a measured pressured of 500 kPa. You must : a) Determine the head-loss between points A and B if they are separated by 100m, that the pipe has a flow of 175 V/s and that the Hazen-Williams coefficient is 100 (see figure 3) b) Calculate the absolute roughness (&). Presume that the water temperature is 15oC. A Figure 3 Aqueduct pipe B c) We wish to limit head-loss to 10 kPa, all the while transporting the same flow between points A and B. To do this, it has been suggested that a second pipe could connect these two points (see figure 4). You must determine this second pipe's diameter knowing that the total length of this secondary pipe is 135m and has the same Manning coefficient as the first pipe.
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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Transcribed Image Text:You are in charge of evaluating a segment of aqueduct pipe (diameter: 30cm). You know that pt. A has a
measured pressured of 500 kPa. You must :
a) Determine the head-loss between points A and B if they are separated by 100m, that the pipe has a flow of 175
1/s and that the Hazen-Williams coefficient is 100 (see figure 3)
b) Calculate the absolute roughness (&). Presume that the water temperature is 15oC.
A
A
Figure 3 Aqueduct pipe
c) We wish to limit head-loss to 10 kPa, all the while transporting the same flow between points A and B. To do
this, it has been suggested that a second pipe could connect these two points (see figure 4). You must determine
this second pipe's diameter knowing that the total length of this secondary pipe is 135m and has the same
Manning coefficient as the first pipe.
Neglect all local head-loss
B
Figure 4 Proposed secondary pipe (dotted line)
B
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