Figure 2-22.—Types of manholesWhen designing a wastewater system, the designwater is not constant. Use is greater in the summer thanengineer begins by first determining the types andin the winter and greater during the morning and eveningquantities of sewage to rehandled. This is accomplishedthan it is in the middle of the day or at night. Therefore,through a careful study of the area to be served. Thedesign engineer bases his design on the average dailythe average daily flow (based on the average utilization)use of water per person in the area to be served. A typicalis multiplied by a peak flow factor to obtain the designvalue is 100 gallons per person per day. But, the use offlow.2-21
Integrated Publishing, Inc. - A (SDVOSB) Service Disabled Veteran Owned Small Business
