The provisions of Section 712 of IBC are adopted by reference with the following modifications:
1. Revise Section 712.1.2 to read:
"712.1.2 Individual dwelling unit.
Unconcealed and unprotected vertical openings totally within an individual residential dwelling unit and connecting four stories or less shall be permitted."
2. Revise Section 712.1.3.2 by replacing "approved" with "approved."
3. Revise Section 712.1.5.2 by replacing "an approved material or system" with "a material or system engineered."
3.1. Revise Section 712.1.7 to read:
"712.1.7 Atriums.
Atriums complying with Section 404 that connect two or more stories in a Group I-2 or Group I-3 occupancy or three or more stories in any other occupancy shall be allowed.
Exceptions:
1. Atriums shall not be allowed within Group H occupancies.
2. Interior balconies within Group A occupancies, mezzanines and equipment platforms that comply with Section 505, and lofts that comply with Section 1207.5 shall not be considered stories for purposes of this section.
4. Revise Section 712.1.8 by replacing "Approved vertical" with "Vertical."
5. Revise Section 712.1.9 to read:
"712.1.9 Two-story openings.
In other than Groups H, I-2 and I-3, a vertical opening that is not used as one of the applications listed in Sections 712.1.1 through 712.1.8 or 712.1.10 through 712.1.15 shall be permitted if the opening complies with either of the following items:
1. Does not connect more than two stories and:
1.1. Does not penetrate a horizontal assembly that separates fire areas or smoke barriers that separate smoke compartments.
1.2. Is not concealed within the construction of a wall or a floor/ceiling assembly.
1.3. Is not open to a corridor in Group I and R occupancies.
1.4. The building is equipped throughout with an automatic sprinkler system in accordance with Section 903.3.1.1 or 903.3.1.2.
1.5. Is separated from floor openings and air transfer openings serving other floors by construction conforming to required shaft enclosures.
1.6. Does not connect to a story containing a mezzanine.
2. Does not connect more than two stories and:
2.1. Is located in a building of Type IA, IB, or IIA construction.
2.2. One of the stories is a level of exit discharge.
2.3. Where the building contains a Group R occupancy, the building is equipped throughout with an automatic sprinkler system in accordance with Section 903.3.1.1 or 903.3.1.2."
(Amend Coun. J. 2-19-20, p. 14473, Art. II, § 24; Amend Coun. J. 6-25-21, p. 32180, Art. II, § 11)