s an inlet time of 7 min. The coefficient of runoff for the 2 housing area 1 and 2 is 0.55 and area 3 is as asphalt pave area. The distance between manholes 1 a
s an inlet time of 7 min. The coefficient of runoff for the 2 housing area 1 and 2 is 0.55 and area 3 is as asphalt pave area. The distance between manholes 1 a
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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Question
Determine the size of outfall sewer below Manhole 3 (MH3) needed to serve the drainage area in the following figure. Each area has an inlet time of 7 min. The coefficient of runoff for the 2 housing area 1 and 2 is 0.55 and area 3 is as asphalt pave area. The distance between manholes 1 and 2 is 300 meter and the pipe between manhole 2 and 3 is 500 meters. The velocity of water in pipes is 2.8 ft/sec. The rainfall intensity duration relationships is i=140/(t+16), where i=inch per hour and t=rain duration in minutes.
![Area 1: 50000 m
MH & Inlet 1
Area 2= 2 htar
Area 3= 5 acres
MH & Inlet 3
MH & Inlet 2
Outfall](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Ffd52562e-845d-4b76-9066-a18fc6e8845b%2Feeb77e19-a8fc-4e1a-af64-93798542b80e%2F1xfbnu8_processed.jpeg&w=3840&q=75)
Transcribed Image Text:Area 1: 50000 m
MH & Inlet 1
Area 2= 2 htar
Area 3= 5 acres
MH & Inlet 3
MH & Inlet 2
Outfall
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