Before revision: upright= 1.9 |Plumbing codes in use in the USA: IPC Adoption The IPC is the most widely used plumbing code in the United States and is also used as the basis for the plumbing code of several other countries.
After revision: upright= 1.5 |Plumbing codes in use in the USA: IPC Adoption The IPC is the most widely used plumbing code in the United States and is also used as the basis for the plumbing code of several other countries.