Technical Bulletins - 2008-2019
The Technical Bulletins listed below are to be used only for construction projects that were submitted January 1, 2008 to December 31, 2019. For projects submitted before January 1, 2008, please refer to the navigation menu on the left.
B-34 Roof Drainage
The California Plumbing Code (CPC) requires roof areas to be drained by roof drains or gutters.