1. a) Except as provided in subsection (b), every facility other than a mobile facility shall conform to the standards identified in this subsection (a) and published by the International Code Council, Inc., 4051 W. Flossmoor Road, Country Club Hills IL 60478-5795, unless a variance or waiver is obtained pursuant to Section 180.70 or use of a temporary facility is authorized pursuant to Section 180.230. No later amendments to or editions of these standards are incorporated. The legal occupancy of any facility that existed on or before December 31, 2024 shall be permitted to continue without change; however, any repairs, alterations, occupancy changes, relocation, and/or additions to these existing facilities are subject to the 2024 International Existing Building Code (also see Appendix A of this Part).

   1. 1) the 2024 International Energy Conservation Code (IECC);
   2. 2) the 2024 International Existing Building Code (IEBC);
   3. 3) the 2024 International Fire Code (IFC), excluding Chapter 4;
   4. 4) the 2024 International Fuel Gas Code (IFGC);
   5. 5) the 2024 International Mechanical Code (IMC); and
   6. 6) the 2024 International Property Maintenance Code (IPMC).

   With respect to any project for which the design contract is executed on or after January 1, 2025, the applicable standards shall be the 2024 International Building Code and its subcodes, as follows:

2. b) The applicability of the codes listed in subsection (a) shall be limited as set forth in this subsection (b).

   1. 1) Emergency and Crisis Response

      Instead of Chapter 4 of the International Fire Code, the provisions of 29 Ill. Adm. Code 1500 (Joint Rules of the Office of the State Fire Marshal and the Illinois State Board of Education: School Emergency and Crisis Response Plans) shall apply.

   2. 2) Administrative Provisions

      1. A) Instead of the Plumbing Code listed in Section 101.4.3 and referenced elsewhere in the International Building Code, Section 180.60(b)(5) of this Part shall apply.
      2. B) Instead of Sections 102.6 and 102.6.2 of the International Building Code and Section 101.4.2 of the International Existing Building Code, Section 180.60(a) of this Part shall apply.
      3. C) Instead of Sections 103 through 106, 109, and 111 through 115 of the International Building Code, the requirements of Sections 180.40 through 180.70, 180.200 through 180.230 and 180.300 through 180.420 of this Part shall apply.

3. 3) Storm Shelters

   1. A) The standards of this subsection (b)(3) shall apply to any new school building construction project for which the design contract was executed on or after January 1, 2025. (See Section 2-3.12(e-5) of the School Code.)

   2. B) As used in this subsection (b)(3), "new school building construction" means:

      1. i) any new, stand-alone school building with an aggregate Group E occupant load of 50 or more, as defined in Section 305 of the International Building Code; or
      2. ii) one or more additions to an existing school building completed within a period of 24 months that increases the total square footage of the remaining existing building by 50% or more. The storm shelter, which may be placed in the new addition or the existing building, must have sufficient capacity to serve both the addition or additions and the existing building.

   3. 4) Accessibility

      Instead of the accessibility provisions set forth in Chapter 11 of the International Building Code, the Illinois Accessibility Code (71 Ill. Adm. Code 400) shall apply (except as provided in Section 10-20.51 of the School Code regarding press boxes).

   4. 5) Plumbing

      Instead of the plumbing provisions set forth in Section 101.4.3 of Chapter 1 and incorporated in Chapter 35 of the International Building Code, the requirements set forth in the Illinois Plumbing Code (77 Ill. Adm. Code 890) and Section 405.3.1 of the 2024 International Plumbing Code shall apply.

   5. 6) Boiler and Pressure Vessel Safety

      Instead of the provisions set forth in Chapter 10 of the International Mechanical Code, the requirements set forth in the Illinois State Fire Marshal's rules titled Boiler and Pressure Vessel Safety (41 Ill. Adm. Code 2120) shall apply.

   Instead of the provisions contained in Section 423 of the International Building Code, the ICC/NSSA Standard for the Design and Construction of Storm Shelters (ICC 500 2020), published jointly by the International Code Council and the National Storm Shelter Association, shall apply. No later amendments to or editions of these standards are incorporated.

4. 7) Elevators

   Instead of the elevator provisions in the International Building Code, the requirements set forth in the Illinois State Fire Marshal's rules titled Illinois Elevator Safety Rules (41 Ill. Adm. Code 1000) shall apply.

5. 8) Sprinkler Systems

   In conjunction with the sprinkler requirements set forth in Section 22-23 of the School Code, the International Building Code, and the International Fire Code, the requirements set forth in 41 Ill. Adm. Code 109.110 (Compliance Standards) shall apply.

(Source: Amended at 49 Ill. Reg. 1774, effective January 30, 2025)