45-80 Supplement 1303.04 - Bldg.

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RBC t6S9.73 APPROVAL OF MATERIALS AND EQUIPMENT (Amended) All gas piping, tubing, fittings, accessories, appurtenances, and ' gas appliances shall be of a type approved by the Board of Building Code Appeals. Piping, tubing, fittings, accessories, appurtenances, and gas appliances which conform to the Standards hereinbefore specified and which have been listed by the Underwriters' Laboratories, Inc. or the American Gas Association or the same as may be amended from time to time, or which have been approved by any othem accredited testing laboratory may be approved by the Board without additional test. RBC 1691.02 ACCEPTED ENGINEERING PRACTICE (Amended) The design, construction, instaIlatlon, alteration, replacement, repair and maintenance of all such electrlc conductors and equipment for light, heat or power shall be in conformity with accepted engineerin9 practice. In addition to the provisions of this Code, statutes or rules and regulations promulgated by authority of statute or ordinance, the installation, replacement, repair and maintenance of such electric conductors and equipment in accor- dance with the provisions of the National Electrical Code, more fully identified in Chapter 7, of this Code, or the smae as may be amended from time t~ time, shall be deemed to be prima-facle evidence of conformity with accepted engineerin9 practice. " RBC 1693.O3 CLASSIFICATION OF REFRIGERANTS AND REFRIGERATING SYSTEMS (Amended) For the purpose of this Code, refrigerants shall be divided into three groups in accordance with ASA Bg.1, or the same as shall be amended from time to time, being numbered somewhat in the relative degree of hazard. Refrigerating systems shall be divided into two general classes, descriptive of the method employed for extracting heat', i.e. i. Direct systems, in which the evaporator is in direct contact with the material or space refrigerated or is located in air'circulating passages communicating with such spaces. ii. Indirect systems, in which a liquld, such as brine or water, cooled by the refrigerant, is circulated to the material or space refrigerated or is used to cool air so circulated. Indirect systems may be further sub- classified or distinguished by the type of method in which the cooled brine or water is used to cool the material, space or air-circulating passage. RBC 1695.05 ACCEPTED ENGINEERING PRACTICE (Amended) The design, construction, installation, alteration and operation of air-conditioning systems shall be in accord with accepted engineering practice. In addition to conformance with the requirements of this Code, accepted engineering practice shall be considered as compliance with the pub- lished recommendations and standards of the foilowing organizations, further identified in Chapter 7 or the.same as shall be amended from time to time.