§ 9.09.030 GROUND-LEVEL INSTALLATIONS.
   A.   The helicopter landing facility should be located in such an area as would permit a glide slope angle determined by a ratio of eight feet horizontal distance for every one foot of vertical clearance required. Two such approaches shall be available, at least 90 degrees removed from each other.
   B.   An area of approximately 125 feet x 125 feet shall be required. This area shall be clearly defined by means of a substantial barrier providing physical restraint to prohibit the entrance of unauthorized persons into the landing area. A centrally located touch-down area at least 20 feet x 20 feet in size shall be provided for helicopters of less than 3,500 pounds gross weight.
   C.   No unauthorized persons whatsoever shall be permitted within the general landing area during flight operations.
   D.   The helicopter landing facility shall be marked as prescribed by the Federal Aviation Agency.
   E.   Any light installed shall illuminate and be directed onto the touch-down pad only, and in such a manner that the light rays cannot interfere with the pilot's vision.
   F.   A wind indicating device shall be installed. A flag, banner, or similar device is acceptable.
   G.   Two fire extinguishers of at least 16 BC rating shall be provided and be located remotely from each other.
   H.   Where buildings or structures in proximity to the landing area present a fire exposure hazard, there shall be provided at least two 1½ inches wet standpipe outlets equipped with 1½ inches fire hose, not over 100 feet in length, and a combination fog nozzle.
   I.   Approved means of communication such as telephone, radio, fire alarm box, or signaling device shall be provided adjacent to the landing area.
('65 Code, § 17A-7) (Ord. No. CS-570 § 1 (part))