What is the purpose of floor drains in a building?

The purpose of floor drains in a building is primarily to collect excess water and provide a means of draining it away. This is particularly important in areas where water may accumulate, such as basements, restrooms, kitchens, and utility rooms. Floor drains help to manage water safely and efficiently, preventing water from pooling on the floor, which could lead to damage, slip hazards, or unsanitary conditions.

This functionality ensures that any spills, leaks, or unwanted water from cleaning operations are directed away from the interior of the building and into a proper drainage system. Without these drains, excess water could result in significant issues, including the potential for mold growth, structural damage, or unpleasant odors, as well as creating unsafe conditions due to slippery floors.

While other options may have their respective purposes in a building’s infrastructure, they do not align with the specific designed function of floor drains. For example, air circulation is relevant to ventilation systems, connecting to the water supply pertains to plumbing fixtures, and preventing flooding relates to larger drainage systems or sump pumps, rather than floor drains specifically. Thus, option A appropriately captures the essential role that floor drains play in maintaining a safe and functional building environment.