It appears that no code applies here locally as this was accessable on from a bedroom closet hatch and the decking was not installed as a permanent floor or walking surface.
Is attic access required by code.
See the california mechanical code for access requirements where mechanical equipment is located in attics.
Hatches ad f ditid and doors access doors from conditioned spaces to unconditioned spaces e g attics and crawl spaces shall beattics and crawl spaces shall be weatherstripped and insulated to a level equivalent to the insulation on.
What your attic probably does not have is a set of code compliant stairs.
Attic area exceeds 30 square feet and.
To convert your attic to living space you cannot provide access via a ladder.
A 30 inch 762 mm minimum unobstructed headroom in the attic space shall be provided at some point above the access opening.
Attic access is required international residential code 2003 requires any attic area exceeding 30sf in area and that have a vertical height of 30 inches or more.
Wednesday july 4 2018.
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.
Minimum vertical height of 30 inches measured from the top of the ceiling framing members to the bottom of the roof framing members.
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.
The rough framed opening.
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.