Glossary · G
Gravity Sewer
Definition
A pipeline that uses gravity to convey wastewater or stormwater from a higher to a lower elevation without the need for pumping equipment.
01In practice
Conclusion
Gravity sewers remain the preferred method for wastewater collection where topography permits, offering reliable and cost-effective long-term operation.
02FAQ
Gravity Sewer: frequently asked questions
What is the minimum slope required for gravity sewers?
Minimum slopes typically range from 0.4% to 1%, depending on pipe size and local codes, to maintain self-cleaning velocity and prevent sediment accumulation.
What are the advantages of gravity sewers?
Gravity sewers require less maintenance, have lower operating costs, and are more reliable than pressurized systems as they do not depend on mechanical equipment.