secondary feeder

In civil engineering, a secondary feeder is a pipeline within a water distribution network. These pipelines are smaller in diameter than primary feeders, typically at least 150 mm (6 inches) wide, and connect to the larger mains.1

Secondary feeders are usually located within public rights-of-way to allow for service connections to all potential water users. They are often arranged in a gridiron pattern, creating interconnected loops. This design allows for water circulation and enables the isolation of broken pipe sections for repair without disrupting service to large areas. This contrasts with "dead-end" patterns, which lack circulation and can lead to water stagnation and taste/odor issues. These pipelines must withstand internal and external forces, including water pressure, soil weight, vehicle loads, and water-hammer forces.1