Where are floor drains prohibited from being installed?

Floor drains are prohibited from being installed in plenums due to the risk of contamination and the potential for issues related to air quality and ventilation. Plenums are spaces used for air distribution in heating, ventilation, and air conditioning (HVAC) systems. If a floor drain were to be installed in this area, it could allow moisture or wastewater to enter the plenum, leading to mold growth, deterioration of mechanical components, and an overall negative impact on air quality. In addition, any spills or leaks from the drain may compromise the efficiency of the HVAC system and create significant health and safety hazards. Having no floor drains in plenums ensures that these essential spaces remain clean and air-tight, maintaining their intended function within the building's infrastructure.