Description: Storm Water Gravity Main is a conduit utilizing the energy resulting from a difference in elevation to remove unwanted water. The term sewerimplies removal of sewageor surface runoffrather than water intended for use;[1]and the term gravityexcludes water movement induced through force mainsor vacuum sewers. Most sewers are gravity sewers; because gravity offers reliable water movement with no energy costs wherever grades are favorable. Gravity sewers may drain to sumpswhere pumping is required to either force sewage to a distant location or lift sewage to a higher elevation for entry into another gravity sewer, and lift stationsare often required to lift sewage into sewage treatment plants.
Description: A storm water system with open channels for the discharge of rainwater exists in most urbanized areas. The channels usually drain off rainwater into rivers or sometimes into agricultural irrigation canals.
Description: Flared: the funnel-shaped widening of a pipe, to facilitate flow into or out of a pipe. The Intake Outfall structure is generally referred to as the ‘end of pipe’ or ‘flared end section.’ This structure will not have a ‘top elevation.’ The Intake Outfall structure cover should be ‘none.’
Description: Pump Station is valid for all system types, but will be primarily used in sanitary systems. Pump station: A machine operated by hand or by a prime mover to raise or impel liquids through a pipe. More than likely private, low pressure, grinder pumps.
Description: Pump Station is valid for all system types, but will be primarily used in sanitary systems. Pump station: A machine operated by hand or by a prime mover to raise or impel liquids through a pipe.
Description: SanitaryGravity Main is a conduit utilizing the energy resulting from a difference in elevation to remove unwanted water. The term sewerimplies removal of sewageor surface runoffrather than water intended for use;[1]and the term gravityexcludes water movement induced through force mainsor vacuum sewers. Most sewers are gravity sewers; because gravity offers reliable water movement with no energy costs wherever grades are favorable. Gravity sewers may drain to sumpswhere pumping is required to either force sewage to a distant location or lift sewage to a higher elevation for entry into another gravity sewer, and lift stationsare often required to lift sewage into sewage treatment plants.
Description: PRESSURIZED (FORCE) MAIN are pipelines that convey wastewater under pressure from the discharge side of a pump or pneumatic ejector to a discharge point. Pumps or compressors located in a lift station provide the energy for wastewater conveyance in force mains.