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.
Attic access irc.
Irc 12 13 section r807 1 proponent.
The 2009 and 2015 irc verbiage is similar and still applicable.
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.
Section r807 attic access r807 1 attic access.
Attics that meet the size and ceiling height criteria of the habitable attic definition in chapter 2 are considered habitable.
See section m1305 1 3 for access requirements where mechanical equipment is located in attics.
Bajnai chesterfield county va icc building code action committee revise as follows.
Habitable attics require a vertical access and emergency escape and rescue opening.
Irc 807 1 is clear to me with its dimensions for attic access.
Buildings with combustible ceiling or roof construction shall have an attic access.