Fire safety rules for traditional Hawaiian structures

(a) Fire protection classifications. Indigenous Hawaiian architecture structures shall be categorized into the following two classes for fire protection requirements: Class Setback Requirements Fire Protection Requirements Class Setback Requirements Fire Protection Requirements Class A The structure (or a group of structures) is: No fire protection is required for the structure. 1. Located at least 100 feet from any existing structure on the same or neighboring properties; and 2. Located at least 100 feet from any property line, except as follows: a. if the property line abuts a public way, the 100 feet minimum setback for that property line shall be reduced by the width of the public way; b. if the property line abuts the shoreline, the minimum setback for that property line shall be the shoreline setback; or c. for any hale ku`ai in the agricultural district that is less than 200 square feet, that is completely open on three sides, and that is used as an agricultural products stand and if the property line abuts a public way, the minimum setback for that property line shall be 15 feet. Class B The structure (or a group of structures) that conforms to applicable zoning setback requirements but does not satisfy Class A setback requirements. Automatic fire sprinkler system shall be installed in accordance with design standards in § 16-12.8 .2. An electrical permit is required for fire sprinklers systems. (b) Automatic fire sprinklers. The design standards for automatic fire sprinklers for Class B indigenous Hawaiian architecture structures shall be in accordance with NFPA 13. Exception: The design standards for automatic fire sprinklers for Class B indigenous Hawaiian architecture structures shall be permitted as follows: (1) Eighteen gallons per minute for a single head at 140 square feet maximum coverage of roof area; (2) Thirteen gallons per minute for each subsequent head at 140 square feet maximum coverage of roof area per head; (3) The minimum supply pressure at the base of the riser shall not be less than 40 pounds per square inch; (4) The minimum residual pressure at the highest sprinkler shall be not less than 12 pounds per square inch; (5) Sprinkler heads spacing shall not exceed 14 feet; (6) Sprinkler heads shall be open type upright, pendent, or sidewall with 1/2-inch or 17/32-inch orifice and have a wax corrosion resistant coating; (7) The total number of sprinklers on a branch shall not exceed six heads; (8) The total number of sprinklers shall not exceed the following schedule: 1-inch diameter 2 sprinklers 1-1/4 inch diameter 3 sprinklers 1-1/2 inch diameter 5 sprinklers 2-inch diameter 10 sprinklers 2-1/2 inch diameter 30 sprinklers 3-inch diameter 60 sprinklers (9) The above pipe schedule shall not apply to hydraulically designed systems; (10) The water density for hydraulically designed systems shall not be less than 0.10 gpm per square foot; (11) The source of water may be by domestic water meters, detector check meter, underground well, storage tank, swimming pool, ponds, etc., but must meet the design requirements for adequate pressure and duration; (12) Water supply shall be sufficient to provide 30 minutes duration; (13) If domestic water meters are used as the source of water for the fire sprinklers, without a storage tank and booster pump, the maximum number of heads shall not exceed the following table: 5/8-inch water meter 1 sprinkler 3/4-inch water meter 2 sprinklers 1-inch water meter 3 sprinklers 1-1/2 inch water meter 7 sprinklers 2-inch water meter 11 sprinklers 3-inch water meter 27 sprinklers (14) The piping material shall be hard drawn copper with silver solder or brazed fittings, or carbon steel with corrosion-resistant coatings. Plastic pipes shall not be allowed, except for below grade supply pipes; (15) Fire sprinkler system shall be actuated by smoke detectors located at the highest points of the roof and spaced as recommended by the manufacturer; (16) Flow control valves shall be either hydraulically or electrically operated with a manual override switch; (17) Where the width of a roof exceeds the width allowed for one row of sprinklers, two or more rows of sprinklers shall be placed such that the entire roof area is protected; (18) Prevailing wind direction shall be considered in the placement of sprinklers; (19) Deflectors for sprinklers shall be parallel with the roof surface or tilted slightly towards the peak of the roof; and (20) Fire sprinkler systems shall have a local alarm activated by a smoke detector. (c) For any hale that requires fire protection pursuant to subsection (b), the applicant shall provide a certification from a licensed engineer or a licensed C-20 contractor that the water supply for the fire sprinkler system has been tested and is capable of delivering the required fire flow for a duration of 30 minutes. (d) Smoke detector. Any hale used for sleeping shall have an approved battery operated smoke detector installed in the hale.