What type of waste piping can plumbing fixtures used for washing or bathing not receive?

Plumbing fixtures used for washing or bathing typically do not receive indirect waste. Indirect waste piping is meant for sanitary applications where waste can be discharged in a manner that minimizes direct contact with the drainage system. This type of waste is mostly for fixtures that could potentially introduce contaminants if directly connected, such as sinks in laboratories or kitchens that might be used for food preparation.

In contrast, fixtures for washing or bathing are designed to accommodate direct waste disposal. They allow for direct and safe discharge of gray water, which includes water from bathing and washing activities. While gray water is suitable for these fixtures, and stormwater drainage systems are designed to handle runoff rainwater separately, indirect waste handling is not applicable in this context. This helps maintain sanitation and prevents contamination in the plumbing system, ensuring that waste water from personal hygiene activities is effectively managed.