2. A fire truck is sucking water from a river and delivering it through a long hose to a nozzle. The total length of the galvanized iron hose- corrected for valves, fittings, entrance, etc. - is 90 [m]. The energy provided by the fire truck for pumping the water is 53 [kJ/kg]. What diameter is needed for the hose to provide an average velocity of 30 [m/s]? river 30 [m] pump
2. A fire truck is sucking water from a river and delivering it through a long hose to a nozzle. The total length of the galvanized iron hose- corrected for valves, fittings, entrance, etc. - is 90 [m]. The energy provided by the fire truck for pumping the water is 53 [kJ/kg]. What diameter is needed for the hose to provide an average velocity of 30 [m/s]? river 30 [m] pump
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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Transcribed Image Text:Table 2.1. Roughness of Clean Pipe²
€, mm
Pipe material
Riveted steel
Concrete
Wood stave
Cast iron
Galvanized iron
Asphalted cast iron
Commercial steel or wrought iron
Drawn tubing
Glass
Plastic (PVC, ABS, polyethylene)
1-10
0.3-3
0.2-1
0.26 (0.25) ¹
0.15 (0.15)
0.12 (0.13) b
0.046 (0.043)
0.0015
0
0
"Adapted from Fischer and Porter Co., Hatboro, PA,
Catalogs section 98-A (1947).
Values in parentheses from Colebrook (1939).
![2.
A fire truck is sucking water from a river and delivering it through a long
hose to a nozzle. The total length of the galvanized iron hose corrected for valves,
fittings, entrance, etc. - is 90 [m]. The energy provided by the fire truck for pumping
the water is 53 [kJ/kg].
What diameter is needed for the hose to provide an average velocity of 30 [m/s]?
river
I
I
30 [m]
pump
16](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fef551a04-eaa7-4261-8a10-0d0c61efc3ed%2F48953c64-f143-48cd-b825-25d943c5547c%2F4f6gxag_processed.jpeg&w=3840&q=75)
Transcribed Image Text:2.
A fire truck is sucking water from a river and delivering it through a long
hose to a nozzle. The total length of the galvanized iron hose corrected for valves,
fittings, entrance, etc. - is 90 [m]. The energy provided by the fire truck for pumping
the water is 53 [kJ/kg].
What diameter is needed for the hose to provide an average velocity of 30 [m/s]?
river
I
I
30 [m]
pump
16
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