Louisiana Administrative Code
Title 51 - PUBLIC HEALTH-SANITARY CODE
Part XIV - Plumbing
Chapter 9 - Vents
Section XIV-905 - Vent Stacks

Universal Citation: LA Admin Code XIV-905

Current through Register Vol. 50, No. 9, September 20, 2024

A. Installation. A vent stack or main vent shall be installed with a soil or waste stack whenever back vents, relief vents or other branch vents are required in two or more branch intervals. No fixture shall be permitted to drain into any stack above any vent connection.

B. Terminal. The vent stack shall terminate independently above the roof of the building or shall be connected with the extension of the soil or waste stack (stack-vent) at least 6 inches (152 mm) above the flood-level rim of the highest fixture.

C. Main Stack. The main vent stack or stack vent shall comply with the following.

1. Every building in which plumbing is installed shall have at least one main vent stack or stack vent, of not less than 3-inch (76 mm) diameter, for each building drain, when connected separately to a building sewer, septic tank, or other sewage collection and/or disposal system approved by the state health officer. Such vent shall run undiminished in size and as directly as possible from the building drain through to the open air above the roof.

2. The main vent stack in a detached garage or other accessory building where only a washing machine or laundry tray is installed may be 1 1/2 inches (38 mm).

AUTHORITY NOTE: Promulgated in accordance with R.S. 40:4(A)(7) and R.S. 40:5(2)(3)(7)(9)(16)(17)(20).

Disclaimer: These regulations may not be the most recent version. Louisiana may have more current or accurate information. We make no warranties or guarantees about the accuracy, completeness, or adequacy of the information contained on this site or the information linked to on the state site. Please check official sources.
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