For effective drainage, a floor drain must be connected to what?

For effective drainage, a floor drain must be connected to an indirect waste pipe. This connection is essential because an indirect waste pipe provides a means of safely discharging wastewater from the floor drain to a plumbing system without risking contamination of the potable water supply. Indirect waste piping systems are designed to allow for proper drainage while preventing backflow or flooding, which is crucial in maintaining hygiene and safety within a building.

Connecting a floor drain directly to a plumbing fixture or line that lacks proper separation could potentially create cross-connections, leading to a greater risk of back siphonage and contamination. Indirect waste pipes typically discharge into a sink, lavatory, or other approved plumbing fixture, which is specifically designed to handle such waste. This setup contributes to the efficiency of the drainage system, ensuring that all wastewater is safely removed without hindering the overall plumbing performance.