Appendix AY Ungraded Lumber

AY101.1 Scope.

This appendix shall be applicable to the use of ungraded lumber in the construction or repair of any accessory structure not containing habitable space.

AY102.1 General.

The following words and terms shall, for the purposes of this appendix, have the meanings shown herein. Refer to Chapter 2 of this code for general definitions.

AY103.1 Ungraded Lumber.

Ungraded lumber shall not be required to be identified by a grade mark of an accredited lumber grading or inspection agency or have design values certified by an accreditation body that complies with DOC PS 20 in non-habitable structures. The lumber shall meet a maximum moisture content of 19% at the time of construction. Lumber shall be protected in accordance with Section R304 and R305 where required by R304.1 and R305.1

103.1 Occupancy Change.

Structures built under this appendix shall not be changed to a habitable structure unless the structure complies with the requirements of R301.1.3.