Ibc Attic Access Size

See section m1305 1 3 for access requirements where mechanical equipment is located in attics.

Ibc attic access size.

306 3 appliances in attics. 2009 ibc from previous discussions i understand that stairs are not required to attics. Is there a requirement for certain size or type access to furnace air handlers in an attic. Openings for ventilation having a least dimension of not less than 1 16 inch 1 6 mm and not more than 1 4 inch 6 4 mm shall be permitted.

The international codes i codes are the widely accepted comprehensive set of model codes used in the us and abroad to help ensure the engineering of safe sustainable affordable and resilient structures. Buildings with combustible ceiling or roof construction shall have an attic access opening to attic areas that have a vertical height of 30 inches 762 mm or greater over an area of not less than 30 square feet 2 8 m 2 the vertical height shall be measured from the top of the ceiling framing members to the underside of the roof framing members. Minimum opening size the 2012 international residential code requires an attic access opening for attics with an area greater than 30 square feet and a vertical height in excess of 30 inches. Openings for ventilation having a least dimension larger.

However is a permanent means of access required as in a fixed ladder. The international code council icc is a non profit organization dedicated to developing model codes and standards used in the design build and compliance process. The type of attic access determines the means you can install for entrance into the attic. Building codes according to the 2006 international residential code r807 1 attic access homes with combustible materials in the ceiling and roof construction must have an access to attic areas that exceeds 30 square feet and with a vertical height of 30 inches or greater.

International residential code 2003 requires any attic area exceeding 30sf in area and that have a vertical height of 30 inches or more. Or is a step ladder code compliant. Buildings with combustible ceiling or roof construction shall have an attic access opening to attic areas that exceed 30 square feet 2 8 m2 and that have a vertical height of 30 inches 762 mm or greater over an area of not less than 30 square feet. R807 1 attic access in buildings with combustible ceiling or roof construction an attic access opening shall be provided to attic areas that exceed 30 square feet 2 8m sq and have a vertical height of 30 inches 762mm or greater.

When the access is located in a ceiling minimum unobstructed headroom in the attic space shall be 30 inches 762 mm at some point above the access measured vertically from the bottom of ceiling framing members.