No connections should be made to a horizontal line within ten pipe diameters downstream from the base of a stack unless special venting is provided.

Question

Quizplus · Accepted Answer

This is a safety guideline stated in the International Plumbing Code (IPC) and is meant to prevent the possibility of dangerous backdrafts or blockages in the piping system. Special venting may be required if connections need to be made within this area.

No Connections Should Be Made to a Horizontal Line Within