HomeMy WebLinkAbout11.0 Sanitary Sewer Peak and Average Flow Calculations 02-15-2019Peak Sanitary Sewer Flow Calculation Project: Lot 13, Block 1, Gallatin Park Subdivision
New Office Building:
60 Occupants
Water Use:
1.6 gallons per toilet flush per hour per person (low flow toilets)
0.5 gallons per lave use per hour per person
2.1 gallons per person per hour
Peak Wastewater Flow 126 gallons per hour
Peak Wastewater Flow Rate 126 gallons per hour based on above estimation
Peak Wastewater Flow Rate 3024 gallons per day
population 60 people
peaking factor*4.30
assumed infiltration rate**150 gallons/acre/day
lot area 0.5367 acres
infiltration rate 80.505 gpd
wastewater generation rate*11.7263 gal/day/person
Average Wastewater Flow Rate 1 gpm
Average Wastewater Flow Rate 33 gallons per hour
*Based on Harmon Formula
**Based on City of Bozeman Design Standards
Average
Sewer Calculations from Peak Estimation