What is a building drain that conveys sewage only referred to as?

A building drain that conveys sewage only is referred to as a Building Drain - Sanitary. This terminology is crucial in plumbing systems, as it specifically identifies the type of drainage system designed to carry wastewater from sanitary fixtures to a treatment facility or disposal point.

The term "sanitary" is used to indicate that the drain's primary function is to handle sewage rather than rainwater or other types of fluids. This is significant because sanitary systems must comply with specific codes and regulations that ensure safe and hygienic disposal of human waste, reducing the risks of health hazards and environmental contamination.

Understanding the distinction between sanitary drains and other types of building drains is vital for proper plumbing design and compliance with the Kentucky Plumbing Code, ensuring that wastewater is effectively managed and meets local health standards.