Attic Access Size Requirements

2006 irc residential construction.

Attic access size requirements.

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

This article describes the accessibility requirements codes the required size location for crawl area openings in buildings the standards procedures for entering crawl spaces and we explain how can we inspect a crawl area and buidling conditions when safe ready access are not already provided. Size of scuttle and accessibility of the attic dictate the level of entry. Buildings with combustible ceiling or roof construction shall have an attic access opening to attic areas that exceed 30 square feet 2 8m squared and have a vertical height of 30 inches 762 mm or more. 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.

Access to crawl building crawl spaces. The attic must be entered at a minimum by head and shoulders whether access is by pull down stairway or scuttle. For smaller attic openings with a minimum measurement of 18 x 24 you will need to measure the swing clearance inside the attic space. The type of attic access determines the means you can install for entrance into the attic.

Where 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. 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. The compact attic ladder requires a minimum height of 28 and minimum depth of 44 inside the attic above and behind the opening. See the california mechanical code for access requirements where mechanical equipment is located in attics.