A city has a current total population of 40,000 residents. The estimated design population is 55,000 at the end of a design period of 20 years. Determine the design average, peak, and minimum flow rates. Use the following data. Current daily average flow to the wastewater treatment plant Daily average I/I flow Hourly peak I/I flow 18,400 m /d %3D = 80 Lpcd = 180 Lpcd A new junior college will attract 1500 nonresident students per day. The daily average wastewater flow is 50 Lpcd. A new industry will add a daily average flow of 900 m/d for a 24 h/d operation. An hourly peak flow of 1500 m³/d will occur during the day shift. The plant will be shut down one day a week. It is expected that 10% per capita reduction in wastewater flow will occur with the future population growth. The minimum to average flow ratio is 0.4 for the current dry weather wastewater flow,
A city has a current total population of 40,000 residents. The estimated design population is 55,000 at the end of a design period of 20 years. Determine the design average, peak, and minimum flow rates. Use the following data. Current daily average flow to the wastewater treatment plant Daily average I/I flow Hourly peak I/I flow 18,400 m /d %3D = 80 Lpcd = 180 Lpcd A new junior college will attract 1500 nonresident students per day. The daily average wastewater flow is 50 Lpcd. A new industry will add a daily average flow of 900 m/d for a 24 h/d operation. An hourly peak flow of 1500 m³/d will occur during the day shift. The plant will be shut down one day a week. It is expected that 10% per capita reduction in wastewater flow will occur with the future population growth. The minimum to average flow ratio is 0.4 for the current dry weather wastewater flow,
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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Transcribed Image Text:A city has a current total population of 40,000 residents. The estimated design population is 55,000 at the
end of a design period of 20 years. Determine the design average, peak, and minimum flow rates. Use the
following data.
Current daily average flow to the wastewater treatment plant
Daily average I/I flow
Hourly peak I/I flow
= 18,400 m³/d
= 80 Lpcd
= 180 Lpcd
A new junior college will attract 1500 nonresident students per day. The daily average wastewater flow
is 50 Lpcd. A new industry will add a daily average flow of 900 m /d for a 24 h/d operation. An hourly
peak flow of 1500 m’/d will occur during the day shift. The plant will be shut down one day a week. It is
expected that 10% per capita reduction in wastewater flow will occur with the future population growth.
The minimum to average flow ratio is 0.4 for the current dry weather wastewater flow.
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