Learn about the approach, requirements, criteria, considerations, and hydraulic calculations used in the design of gravity sewers. 

Learn about alternatives to gravity sewer systems that would require deep and expensive trench excavation, such as jacking, boring, and tunneling.

 

Learn how the operation and maintenance costs of a pumping station with a force main, when capitalized, may offset or be less than  the construction costs of a deep gravity sewer system.

 

Learn how when high groundwater, unstable soil, shallow rock, or extremely adverse topography make gravity sewers, pump or ejector stations unsuitable, low pressure systems using grinder pumps with small diameter pressure sewers may be a solution.

 

Learn how to calculate the average hourly wastewater flow rate in order to design a sanitary sewer system.

 

Learn how to calculate extreme peak wastewater flow rates and how to size a sanitary sewer system to accommodate them.

 

Learn how to design for unintended inflow and infiltration in wastewater collection systems.

 

Learn about the Manning Formula and how to use it in sewer system design.

 

Learn the importance of flow velocity in sewer pipes and velocity guidelines for various flow conditions that may be encountered.

 

Find out about basic parameters for sewer pumping station layout.

 

Learn about the different types of sewage pumps and ejectors and when they are used.