Skip to Content
You have

Technical Bulletins - 2020 to Current

The Technical Bulletins listed below are to be used only for construction projects that were submitted on or after January 1, 2020. For projects submitted before January 1, 2020, please refer to the navigation menu on the left.


B-34 2020-Current: Roof Drainage

The California Plumbing Code (CPC) requires roof areas to be drained by roof drains or gutters.


B-45 2020-Current: Hoop House Membrane Structures for Cannabis Cultivation

The purpose of this technical bulletin is to clarify the permitting and construction requirements for both temporary and permanent membrane structures for Group U (Utility and Miscellaneous) occupancies used for cannabis cultivation. Hoop house membrane structures are used to extend the growing season by creating a protected interior environment.