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(Amended by Ord. No. 179,324, Eff. 12/10/07, Oper. 1/1/08.)
91.7204.1. Types of Construction Permitted. (Amended by Ord. No. 185,587, Eff. 7/16/18.) Every building in Fire District No. 1 shall be one of the following types: Type I; Type II; Type III; or provisional structures as provided in LAMC Section 91.7205.
91.7204.2. Type IIB Buildings. (Amended by Ord. No. 186,488, Eff. 12/27/19.) Every building of Type IIB construction in Fire District No. 1, except provisional structures allowed by this section, shall have at least two-hour fire-resistive construction for exterior walls with a fire separation distance of less than 10 feet and shall have at least one-hour fire-resistive construction for exterior walls with a fire separation distance of less than 30 feet.
EXCEPTION: These walls may be one-hour less fire-resistive than specified here if the building is not more than one story in height or more than 2500 square feet in area.
91.7204.3. Openings in Exterior Walls. (Amended by Ord. No. 186,488, Eff. 12/27/19.) In the following cases, all openings in the exterior walls of buildings in Fire District No. 1, other than provisional structures, shall be protected by a fire assembly having a three-fourths-hour fire-resistive rating when the exterior wall has a fire separation distance of less than 10 feet
91.7204.4. Roof covering. Section D102.2.4 of Appendix D of the CBC is adopted by reference.
91.7204.5. Structural fire rating. Walls, floors, roofs and their supporting structural members shall be a minimum of one-hour fire-resistance-rated constructions.
EXCEPTIONS:
1. Buildings equipped throughout with an automatic sprinkler system in accordance with CBC Section 903.3.1.1.
2. Automobile parking structures.
3. Buildings surrounded on all sides by a permanently open space of not less than 30 feet (9144 mm).
4. Partitions complying with CBC Section 603.1 Exception 11. (Amended by Ord. No. 185,587, Eff. 7/16/18.)
91.7204.6. Exterior Walls. (Amended by Ord. No. 186,488, Eff. 12/27/19.) In addition to LAMC Subsection 91.7204.2, Section D102.2.6 of Appendix D of the CBC is adopted by reference.
91.7204.7. Architectural Trim. Section D102.2.7 of Appendix D of the CBC is adopted by reference.
91.7204.8. Permanent Canopies. Section D102.2.8 of Appendix D of the CBC is adopted by reference.
91.7204.9. Roof Structures. Section D102.2.9 of Appendix D of the CBC is adopted by reference.
91.7204.10. Plastic signs. Section D102.2.10 of Appendix D of the CBC is adopted by reference.
91.7204.11. Plastic veneer. Section D102.2.11 of Appendix D of the CBC is adopted by reference.
(Amended by Ord. No. 179,324, Eff. 12/10/07, Oper. 1/1/08.)
91.7205.1. Definitions. For the purposes of this section, “provisional structure” shall mean any structure complying with the provisions of this section.
91.7205.2. Size Limit. A Type V provisional structure shall not exceed 12 feet in its longest dimension, 12 feet in height, or 100 square feet in overall area, including any roof projection.
A Type IIB provisional structure shall not exceed 400 square feet in building area and shall not exceed 12 feet in height.
91.7205.3. Exterior Walls. The requirements of CBC Section 503 shall not apply to provisional structures.
The exterior walls of a Type IIB provisional structure shall not be required to have a fire-resistive time period of construction.
The exterior walls of a Type V provisional structure shall be of one-hour fire-resistive construction.
EXCEPTION: The exterior walls of a Type V provisional structure, which is located on an automobile parking station lot, are not required to have a time period of fire resistance if the structure does not exceed 12 feet in its longest dimension and 50 square feet in overall area, including any roof projection and, provided further, that the structure shall be used in conjunction with the business of operating an automobile parking lot and shall maintain a setback from every street front not less than one third of the lot depth.
91.7205.4. Location. A provisional structure shall be located not less than 40 feet from any building of Type IIB or Type V construction.
91.7205.5. Parking Lot Structures. In lieu of a permanent foundation, a provisional structure used as an automobile parking lot office may be anchored to an asphalt slab by four or more 1/2-inch by 12-inch metal pins or equivalent anchorage. Toilet facilities will not be required.
(Title Amended by Ord. No. 176,943, Eff. 10/5/05.)
91.7207.1. Unenclosed Under-floor Areas. Residential buildings shall have all under-floor areas completely enclosed to the ground with construction as required for exterior walls.
EXCEPTIONS:
1. Complete enclosure shall not be required where the underside of all exposed floors and all exposed structural columns, beams and supporting walls are protected as required for exterior one-hour fire-resistive construction.
2. The area under cantilevered balconies and unroofed walking decks need not be considered as under-floor area, provided exposed utilities, pipes or other mechanical devices are not located in the area.
91.7207.2. Utilities. All utilities, pipes, furnaces, water heaters or other mechanical devices located in an exposed under-floor area of a residential building shall be enclosed with material as required for one-hour fire-resistive construction. Adequate covered access openings for servicing such utilities shall be provided as required by appropriate codes.
91.7207.3. Attic Openings. (Amended by Ord. No. 179,324, Eff. 12/10/07, Oper. 1/1/08.) All exterior attic openings shall be protected with a maximum 1/4-inch noncombustible and corrosion-resistant screen.
91.7207.4. Roofing. (Amended by Ord. No. 179,324, Eff. 12/10/07, Oper. 1/1/08.) All buildings shall have a fire retardant roofing assembly complying with the requirements of Class A roof covering as defined in CBC Section 1505. Wood shakes and shingle are not permitted in the VHFHSZ.
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