Irc Required Attic Access
Chapter 10 city amendment.
Irc required attic access. 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. Minimum vertical height of 30 inches measured from the top of the ceiling framing members to the bottom of the roof framing members. 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. Attics that meet the size and ceiling height criteria of the habitable attic definition in chapter 2 are considered habitable.
2015 irc mechanical 1305 1 3 2 access for cooling or heating appliancefor residential application the attic space in which any cooling or heating appliance is installed shall be provided with a permanent ladder for folding away ladder or direct access door opening from the house on the same floor level. This is applicable to finished and unfinished spaces. Wednesday july 4 2018. The florida building code fbc and international residential code irc both require a minimum of one attic access opening for homes with combustible such as wood roof construction if the attic space meets these two criteria.
The rough framed opening. Habitable attics require a vertical access and emergency escape and rescue opening. Iecc versions prior to 2009 did not specify details for attic access hatches and doors. Attic area exceeds 30 square feet and.
Buildings with combustible ceiling or roof construction shall have an attic access opening to attic areas that exceed 30 square feet 2 8 m 2 and have a vertical height of 30 inches. The 2009 and 2015 irc verbiage is similar and still applicable. 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 vertical height shall be measured from the top of the ceiling framing members to the underside of the roof framing members.