Minnesota Department of Labor and Industry Orange bar
Minnesota Department of Labor and Industry

Opinion: Garage slope


Garage slope


2000 IRC Sections 309.3 and 309.4

Submitted By:

AMBO Uniformity Committee

Approved By:

Thomas R. Joachim, State Building Official

Issue Date:

December 2003


How much slope is required for garage and carport floors


IRC 309.3 states "The area of floor used for parking of automobiles or other vehicles shall be sloped to facilitate the movement of liquids to a drain or toward the main vehicle entry doorway."

Committee comments:

No specific slope is required

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