International Building Code 2015 (IBC 2015)

Chapter 1 Scope and Administration


Chapter 2 Definitions

Chapter 3 Use and Occupancy Classification

Chapter 4 Special Detailed Requirements Based on Use and Occupancy

Chapter 5 General Building Heights and Areas

Chapter 6 Types of Construction

Chapter 7 Fire and Smoke Protection Features

Chapter 8 Interior Finishes

Chapter 9 Fire Protection Systems

Chapter 10 Means of Egress

Chapter 11 Accessibility

Chapter 12 Interior Environment

Chapter 13 Energy Efficiency

Chapter 14 Exterior Walls

Chapter 15 Roof Assemblies and Rooftop Structures

Chapter 16 Structural Design

Chapter 17 Special Inspections and Tests

Chapter 18 Soils and Foundations

Chapter 19 Concrete

Chapter 20 Aluminum

Chapter 21 Masonry

Chapter 22 Steel

Chapter 23 Wood

Chapter 24 Glass and Glazing

Chapter 25 Gypsum Board, Gypsum Panel Products and Plaster

Chapter 26 Plastic

Chapter 27 Electrical

Chapter 28 Mechanical Systems

Chapter 29 Plumbing Systems

Chapter 30 Elevators and Conveying Systems

Chapter 31 Special Construction

Chapter 32 Encroachments Into the Public Right-Of-Way

Chapter 33 Safeguards During Construction

Chapter 34 Reserved


Chapter 35 Referenced Standards


Appendix A Employee Qualifications

Appendix B Board of Appeals


Appendix D Fire Districts

Appendix E Supplementary Accessibility Requirements

Appendix F Rodentproofing

Appendix G Flood-Resistant Construction

Appendix H Signs

Appendix I Patio Covers

Appendix J Grading

Appendix K Administrative Provisions

Appendix L Earthquake Recording Instrumentation

Appendix M Tsunami-Generated Flood Hazard

This chapter governs the design and construction of buildings for energy efficiency.

1301.1.1 Criteria

This section has been amended at the state or city level. Amendments are shown in green text.
Buildings shall be designed and constructed in accordance with the International Energy Conservation Code applicable provisions of the "International Energy Conservation Code" or the requirements of "ASHRAE 90.1" listed in Chapter 35 of this code except as modified in Sections 1301.2 and 1301.3.

Exception: Either the "International Energy Conservation Code" referenced in Chapter 44 of the "Residential Code of Ohio for One-, Two-, and Three-Family Dwellings" (RCO) or Sections 1101.2.2 through 1104 in Chapter 11 of the RCO are permitted to be used in place of the energy conservation requirements of this code for Group R-3 occupancies in buildings three stories or less, comprised exclusively of dwelling units, where each unit has independent means of egress.

1301.2 Modifications to the International Energy Conservation Code

This section has been amended at the state or city level. Amendments are shown in green text.
The following changes shall be made to the International Energy Conservation Code:

  1. Section R402.4.1.1 - Delete the last sentence.
  2. Section R402.4.1.2, the first sentence shall be modified to read as follows: "The building or dwelling unit shall be tested and verified as having an air leakage rate not exceeding 4 air changes per hour at 50 Pascals."
  3. Section R402.4.2 shall read "Fireplaces. New woodburning fireplaces shall have doors or tight-fitting flue dampers and outdoor combustion air. If using tight-fitting doors on factory-built fireplaces listed and labeled in accordance with UL 127, the doors shall be tested and listed for the fireplace."
  4. Section R403.2.3 shall read "Building cavities (Mandatory). Building framing cavities shall not be used as supply ducts. "
  5. Section R403.9 - Delete section and all subsections.
  1. Section C101.4.3
    1. Exception 5 shall read "Roof recover or roof repair."
    2. Exception 6 shall read "Roofs without insulation in the cavity and where the sheathing or insulation is exposed during reroofing shall be insulated either above or below the sheathing."
    3. Renumber Exceptions 6, 7, and 8 as 7, 8, and 9.
  2. Section C202, add the following definitions:

    REROOFING. The process of recovering or replacing an existing roof covering. See "Roof recover" and "Roof replacement."

    ROOF RECOVER. The process of installing an additional roof covering over a prepared existing roof covering without removing the existing roof covering.

    ROOF REPAIR. Reconstruction or renewal of any part of an existing roof for the purpose of its maintenance.

    ROOF REPLACEMENT. The process of removing the existing roof covering, repairing any damaged substrate and installing a new roof covering.
  3. Section C402.2.1.1: Delete existing section and Table C402.2.1.1 and replace with new section which reads "C402.2.1.1 Roof replacement. For roof replacements, where the existing roof assembly is part of the building thermal envelope and contains insulation entirely above deck, roof replacement shall include compliance with the requirements of Table C402.1.2 or Table C402.2."

1301.3 Modifications to ASHRAE 90.1

This section has been amended at the state or city level. Amendments are shown in green text.
The following changes shall be made to the ASHRAE 90.1:
  1. Addenda ap, cj, and de included in the ASHRAE "Standard 90.1-2010 Addenda 2013 Supplement Package" as found on the ASHRAE website https:// addenda are also adopted and intended to be applicable to computer rooms and data centers.
  2. Addenda dd included in the ASHRAE "Standard 90.1- 2010 Addenda 2013 Supplement Package" as found on the ASHRAE website research--technology/standards-addenda is also adopted and intended to be applicable to roofing projects.
  3. Section Circulating Pump Controls: Delete section.
  4. Section 8.4.2 Automatic Receptacle Control: Delete section.
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