What is another name for a Building Storm Drain?

A Building Storm Drain is often referred to as a House Storm Drain. This terminology underscores its function within residential plumbing systems, where it consists of piping specifically designed to handle the drainage of rainwater and surface water runoff from rooftops, driveways, and other structures. The use of "House Storm Drain" reflects its integrated role in managing stormwater in a domestic setting, ensuring that excess water is effectively diverted away from the building to prevent flooding and potential water damage.

The other terms provided do not accurately represent this specific component. For instance, "House drainage pipe" typically refers to pipes that handle wastewater from sinks, toilets, and other fixtures, which are different from those designed for stormwater. "Rainwater discharge line" could imply a more generic discharge system that is not specific to buildings, and "Combined sewer outlet" usually relates to systems that handle both sewage and stormwater, thus differing from the focus on just storm drains within residential properties.