ADOPTS WITH AMENDMENTS:

International Building Code 2018 (IBC 2018)

Heads up: There are no amended sections in this chapter.
The provisions contained in this appendix are not mandatory unless specifically referenced in the adopting ordinance.

User note:

About this appendix: Appendix D establishes a framework by which a jurisdiction can establish a portion of a jurisdiction as a fire district. Fire districts are often designated in a more densely developed portion of a city where limiting the potential spread of fire is a key consideration. Within a fire district specific construction types and users are prohibited.

Section D101 General

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D101.1 Scope

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D101.1.1 Mapping

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D101.2 Establishment of Area

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D101.2.1 Adjoining Blocks

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D101.2.2 Buffer Zone

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D101.2.3 Developed Blocks

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D102.1 Types of Construction Permitted

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D102.2 Other Specific Requirements

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D102.2.1 Exterior Walls

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D102.2.2 Group H Prohibited

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D102.2.3 Construction Type

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Roof covering in the fire district shall conform to the requirements of Class A or B roof coverings as defined in Section 1505.

D102.2.5 Structural Fire Rating

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Exterior load-bearing walls of Type II buildings shall have a fire-resistance rating of 2 hours or more where such walls are located within 30 feet (9144 mm) of a common property line or an assumed property line. Exterior nonload-bearing walls of Type II buildings located within 30 feet (9144 mm) of a common property line or an assumed property line shall have fire-resistance ratings as required by Table 601, but not less than 1 hour. Exterior walls located more than 30 feet (9144 mm) from a common property line or an assumed property line shall comply with Table 601.

Exception: In the case of one-story buildings that are 2,000 square feet (186 m2) or less in area, exterior walls located more than 15 feet (4572 mm) from a common property line or an assumed property line need only comply with Table 601.

Architectural trim on buildings located in the fire district shall be constructed of approved noncombustible materials or fire-retardant-treated wood.

Permanent canopies are permitted to extend over adjacent open spaces provided that all of the following are met:

  1. The canopy and its supports shall be of noncombustible material, fire-retardant-treated wood, Type IV construction or of 1-hour fire-resistance-rated construction.

    Exception: Any textile covering for the canopy shall be flame resistant as determined by tests conducted in accordance with NFPA 701 after both accelerated water leaching and accelerated weathering.

  2. Any canopy covering, other than textiles, shall have a flame spread index not greater than 25 when tested in accordance with ASTM E84 or UL 723 in the form intended for use.
  3. The canopy shall have one long side open.
  4. The maximum horizontal width of the canopy shall be not greater than 15 feet (4572 mm).
  5. The fire resistance of exterior walls shall not be reduced.
Structures, except aerial supports 12 feet (3658 mm) high or less, flagpoles, water tanks and cooling towers, placed above the roof of any building within the fire district shall be of noncombustible material and shall be supported by construction of noncombustible material.
The use of plastics complying with Section 2611 for signs is permitted provided that the structure of the sign in which the plastic is mounted or installed is noncombustible.
Exterior plastic veneer is not permitted in the fire district.

Section D103 Changes to Buildings

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D103.1 Existing Buildings Within the Fire District

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D103.2 Other Alterations

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D103.3 Moving Buildings

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Section D104 Buildings Located Partially in the Fire District

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D104.1 General

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Section D105 Exceptions to Restrictions in Fire District

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D105.1 General

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Section D106 Referenced Standards

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