High-rise unit on the 20th floor: how is waste pumped down?
A high-rise unit is serviced from the ground using a dedicated waste line. The waste line is a large-diameter pipe, usually 4 to 6 inches, that runs vertically down the exterior of the building or through a designated chase. All waste from the unit's holding tank drains down this pipe.
Service from ground level. A vacuum truck connects to a cleanout valve at the base of this waste line. The driver opens the valve and uses the truck's vacuum to pull all waste from the line and the unit's tank up on the 20th floor. The driver then recharges the deodorizer and restocks supplies through the unit's service door. No equipment goes up the tower.
Setup and planning. The waste line is installed early, often with the core or facade work. It must be secured and insulated if freezing is a concern. The base cleanout needs clear truck access every service day. Blocked access means a missed service.
Key differences from ground units. A high-rise unit itself is a standard or deluxe model modified with a bottom outlet that connects to the waste line. It does not have a traditional holding tank underneath. The service frequency is weekly, same as ground units, but coordination with crane lifts for the initial placement is critical.
That's the basic pump-down operation. Anyone dealt with a line freeze or a valve clog? What's your crew's typical count per high-rise unit?