Final answer:
In waste piping systems, a tee should not be turned on its back or side at an angle greater than 45 degrees to ensure proper flow and reduce the risk of clogs.
Step-by-step explanation:
In the context of waste piping, the orientation of a tee is important for proper function and code compliance. Generally, a tee may not be turned on its back or side at an angle of more than 45 degrees. This restriction ensures that the flow of waste through the piping system is unimpeded and reduces the likelihood of clogs or backups. Always consult local building codes and regulations for the most accurate and specific guidelines as they can vary by location.