The International Fire Code is hereby amended to include the following provisions:
A. Structures shall not be constructed on slopes exceeding twenty percent (20%).
B. Homes shall meet all National Fire Protection Association (N.F.P.A.) 13D requirements, modified as follows:
1. Provide Fire Sprinklers in all garages, and mechanical (furnace) rooms.
2. Provide Fire Sprinklers in covered decks and walkways greater than four feet (4') wide.
3. All remodeling of existing homes shall provide fire protection devices consistent with or superior to the fire protection standards of the existing nonconforming use.
C. Roof Coverings: Roof coverings shall be constructed of UL listed Class A or B materials in accordance with the International Building Code or shall be constructed of an approved non-combustible roof covering. No wood roof coverings are permitted in the Urban Interface. For roof coverings where the profile allows a space between the roof covering and roof decking, the space at the eave ends shall be fire stopped to preclude entry of flames or embers. When one-half or more of an existing non-conforming roof covering needs to be replaced, the entire roof shall be brought into compliance with this code.
D. Protection Of Eaves: Combustible eaves, facias and soffits shall be enclosed with solid materials with a minimum thickness of 3/4 inch. No exposed rafter tails shall be permitted unless constructed of heavy timber materials.
E. Gutters And Down Spouts: Gutters and down spouts shall be constructed of noncombustible material.
F. Exterior Walls: The exterior side walls of buildings or structures shall be constructed with approved non-combustible materials or with materials approved for a minimum of 1-hour fire-resistance rated construction installed over an approved noncombustible backing. Such material shall extend from the top of the foundation to the underside of the roof sheathing. When one-half or more of an existing nonconforming exterior wall needs to be replaced, the entire exterior wall shall be brought into compliance with this code. Exception: Heavy timber or log wall construction, with a minimum thickness of 8 inches.
G. Unenclosed Underfloor Protection: Buildings or structures shall have all underfloor areas enclosed to the ground, with exterior walls in accordance with Section 10-28-5F.
Exception: Complete enclosure may be omitted where the underside of all exposed floors and all exposed structural columns, beams and supporting walls are protected as required for exterior 1-hour fire-resistance-rated construction or heavy timber construction, or are protected by an approved outside sprinkler system.
H. Appendages And Projections: Unenclosed accessory structures attached to buildings with habitable spaces and projections, such as decks, shall be a minimum of 1-hour fire-resistance-rated construction, heavy timber construction, constructed with approved noncombustible materials, or protected by an approved outside sprinkler system. When the attached structure is located and constructed so that the structure or any portion thereof projects over a descending slope surface greater than ten percent (10%), the area below the structure shall have all underfloor areas enclosed to within six inches (6") of the ground, with exterior wall construction in accordance with Section 10-28-5 F or shall be protected by an approved outside sprinkler system.
I. Exterior Glazing: Exterior windows, window walls and glazed doors, windows within exterior doors, and skylights shall be tempered glass, multilayered glazed panels, glass block or have a fire-protection rating of not less than twenty (20) minutes.
J. Exterior Doors: Exterior doors shall be approved non-combustible construction, solid core wood not less than 1 3/4-inches thick or have a fire protection rating of not less than twenty (20) minutes. Windows within doors and glazed doors shall be in accordance with Section 10-28-5 I.J.
Exception: Vehicle access doors.
K. Vents: Attic ventilation openings, foundation or underfloor vents or other ventilation openings in vertical exterior walls and vents through roofs shall not exceed one hundred forty four (144) square inches each. Such vents shall be covered with noncombustible corrosion-resistant mesh with openings not to exceed 1/4 inch. Attic ventilation openings shall not be located in soffits, in eave overhangs, between rafters at eaves, or in other overhang areas. Gable end and dormer vents shall be located at least 10 feet from property lines. Underfloor ventilation openings shall be located as close to grade as practical.
L. Detached Accessory Structures: Detached accessory structures located less than fifty feet (50') from a building containing habitable space shall have exterior walls constructed with materials approved for a minimum of 1-hour fire-resistance-rated construction, heavy timber, log wall construction, or constructed with approved noncombustible material on the exterior side. When the detached structure is located and constructed so that the structure or any portion thereof projects over a descending slope surface greater than 10 percent, the area below the structure shall have all underfloor areas enclosed to within 6 inches of the ground, with exterior wall construction in accordance with Section 10-31-50 F or underfloor protection in accordance with Section 10-28-5 G.
Exception: The enclosure may be omitted where the underside of all exposed floors and all exposed structural columns, beams and supporting walls are protected as required for exterior 1-hour fire resistance-rated construction or heavy timber construction. See Section 10-28-5 C for roof requirements. (Ord. 2019-04, 10-16-2019)