Waste receptors must not be installed in which of the following spaces?

Waste receptors must not be installed in concealed spaces due to several important reasons related to plumbing design and function. Concealed spaces are typically areas that are not easily accessible for maintenance, inspection, and repair. If waste receptors were installed in such areas, it could create serious challenges in terms of troubleshooting problems, detecting leaks, and performing necessary maintenance. Additionally, concealed spaces may not provide adequate ventilation, leading to potential issues with odor control and the buildup of harmful gases.

In contrast, accessibly ventilated spaces, open outdoor areas, and breezy locations can support waste receptor installations by providing proper airflow, easier access for maintenance, and better conditions for managing waste effectively. Therefore, understanding the limitations of different environments for waste receptor installation helps ensure compliance with plumbing codes and promotes safety and functionality in plumbing systems.