"Recommended Good Practices For Gas Piping Appliance Installation, And Venting", Mountain Fuel Supply Company, revision of June 1980, is adopted by Salt Lake City as an ordinance, rules and regulations of the city, subject to the amendments and exceptions thereto as hereinafter set out, three (3) copies of which code have been filed for use and examination by the public in the office of the city recorder. (Prior code § 5-12-2)