CODES

ADOPTS WITH AMENDMENTS:

International Existing Building Code 2012 (IEBC 2012)

Chapter 1 Scope and Administration

Chapter 2 Definitions

Chapter 3 Compliance Methods

Chapter 4 Prescriptive Compliance Method

Chapter 5 Classification of Work

Chapter 6 Repairs

Chapter 7 Alterations—Level 1

Chapter 8 Alterations—Level 2

Chapter 9 Alterations—Level 3

Chapter 10 Change of Occupancy

Chapter 11 Additions

Chapter 12 Historic Buildings

Chapter 13 Relocated or Moved Buildings

Chapter 14 Performance Compliance Methods

Chapter 15 Construction Safeguards

Chapter 16 Referenced Standards

Chapter 17 Retrofitting

Appendix A Guidelines for the Seismic Retrofit of Existing Buildings

Appendix B Standard for Rehabilitation

Appendix C Refer to NFPA 914 Code for Fire Protection of Historic Structures 2001 Edition

Chapter C2 Roof Deck Fastening for High-Wind Areas

Resource A Guidelines on Fire Rating of Archaic Materials and Assemblies Reserved

An addition to a building or structure shall comply with the Florida Codes as adopted for new construction without requiring the existing building or structure to comply with any requirements of those codes or of these provisions, except as required by this chapter. Where an addition impacts the existing building or structure, that portion shall comply with this code.
An addition shall not create or extend any nonconformity in the existing building to which the addition is being made with regard to accessibility, structural strength, fire safety, means of egress, or the capacity of mechanical, plumbing, or electrical systems.
Any repair or alteration work within an existing building to which an addition is being made shall comply with the applicable requirements for the work as classified in Chapter 5.
No addition shall increase the height of an existing building beyond that permitted under the applicable provisions of Chapter 5 of the Florida Building Code, Building for new buildings.

No addition shall increase the area of an existing building beyond that permitted under the applicable provisions of Chapter 5 of the Florida Building Code, Building for new buildings unless fire separation as required by the Florida Building Code, Building is provided.

Exception: In-filling of floor openings and nonoccupiable appendages such as elevator and exit stair shafts shall be permitted beyond that permitted by the Florida Building Code, Building.

Existing fire areas increased by the addition shall comply with Chapter 9 of the Florida Building Code, Building.

Exception: If an existing warehouse is expanded, the addition must comply with the requirements in Chapter 9 of the Florida Building Code, Building; however, the existing warehouse need not be updated to meet those requirements so long as it is in compliance with the Florida Building Code, 2001 edition, and with requirements concerning automatic sprinkler systems in Section 903 of the Florida Building Code, Building.
Additions to existing buildings or structures are new construction and shall comply with the Florida Building Code, Building.

Existing structural elements supporting any additional gravity loads as a result of additions shall comply with the Florida Building Code, Building.

Exceptions:

1. Structural elements whose stress is not increased by more than 5 percent.

2. Buildings of Group R occupancy with no more than five dwelling units or sleeping units used solely for residential purposes where the existing building and the addition comply with the conventional light-frame construction methods of the Florida Building Code, Building or the provisions of the Florida Building Code, Residential.

The lateral force-resisting system of existing buildings to which additions are made shall comply with Sections 1103.3.1, 1103.3.2 and 1103.3.3.

Exceptions:

1. Buildings of Group R occupancy with no more than five dwelling or sleeping units used solely for residential purposes where the existing building and the addition comply with the conventional light-frame construction methods of the Florida Building Code, Building or the provisions of the Florida Building Code, Residential.

2. In other existing buildings where the lateral-force story shear in any story is not increased by more than 10 percent cumulative.

Any element of the lateral force-resisting system of an existing building subjected to an increase in vertical or lateral loads from the vertical addition shall comply with the Florida Building Code, Building wind provisions and the FBC-level seismic forces specified in Section 301.1.4.1 of this code.
Where horizontal additions are structurally connected to an existing structure, all lateral force-resisting elements of the existing structure affected by such addition shall comply with the Florida Building Code, Building wind provisions and the FBC-level seismic forces specified in Section 301.1.4.1 of this code.
Voluntary addition of structural elements to improve the lateral force-resisting system of an existing building shall comply with Section 807.6.

Any structural element of an existing building subjected to additional loads from the effects of snow drift as a result of an addition shall comply with the Florida Building Code, Building.

Exceptions:

1. Structural elements whose stress is not increased by more than 5 percent.

2. Buildings of Group R occupancy with no more than five dwelling units or sleeping units used solely for residential purposes where the existing building and the addition comply with the conventional light-frame construction methods of the Florida Building Code, Building or the provisions of the Florida Building Code, Residential.

Additions and foundations in flood hazard areas shall comply with the following requirements:

1. For horizontal additions that are structurally interconnected to the existing building:

1.1. If the addition and all other proposed work, when combined, constitute substantial improvement, the existing building and the addition shall comply with Section 1612 of the Florida Building Code, Building or Section R322 of the Florida Building Code, Residential as applicable.
1.2. If the addition constitutes substantial improvement, the existing building and the addition shall comply with Section 1612 of the Florida Building Code, Building or Section R322 of the Florida Building Code, Residential as applicable.

2. For horizontal additions that are not structurally interconnected to the existing building:

2.1. The addition shall comply with Section 1612 of the Florida Building Code, Building or Section R322 of the Florida Building Code, Residential, as applicable.
2.2. If the addition and all other proposed work, when combined, constitute substantial improvement, the existing building and the addition shall comply with Section 1612 of the Florida Building Code, Building or Section R322 of the Florida Building Code, Residential, as applicable.

3. For vertical additions and all other proposed work that, when combined, constitute substantial improvement, the existing building shall comply with Section 1612 of the Florida Building Code, Building or Section R322 of the Florida Building Code, Residential, as applicable.

4. For a raised or extended foundation, if the foundation work and all other proposed work, when combined, constitute substantial improvement, the existing building shall comply with Section 1612 of the Florida Building Code, Building.

5. For a new foundation or replacement foundation, the foundation shall comply with Section 1612 of the Florida Building Code, Building, or Section R322 of the Florida Building Code, Residential, as applicable.

Where an addition is made to a building or structure of a Group R or I-1 occupancy, the existing building shall be provided with smoke alarms as required by the Florida Fire Prevention Code or Section R314 of the Florida Building Code, Residential as applicable.
Accessibility provisions for new construction shall apply to additions. An addition that affects the accessibility to, or contains an area of, primary function shall comply with the requirements of the Florida Building Code, Accessibility. Alterations within existing building footprints proposed in conjunction with an addition shall comply with the alterations provision of the Florida Building Code, Accessibility.
Additions to existing buildings or structures shall comply with the requirements of the Florida Building Code, Energy Conservation.
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