Conexiones de los Armazones y Plataformas

de Carros. Las conexiones entre elementos de la plataforma y del armazón del carro serán remachadas, empernadas O soldadas y de acuerdo a lo siguiente: a. Pernos - Los pernos cuando se usen a través de bordes inclinados de elementos estructurales, - 64 - ENGLISH TEXT shall have bolt heads of the tipped-head type or shall be fitted with beveled washers. b. Nuts - Nuts, used on sloping flanges of structural members, shall seat on beveled washers. C. Welding - Welding of parts upon which safe operation depends shall be done in accordance with the appropiate standards established by the American Welding Society. USAS, A17.1 Ibid All welding of such parts shall be done by welders qualified in accordance with the requirements of the American Welding Society. At the option of the manufacturer, the welders may be qualified by one of the following: 1. By the manufacturer 2. By a proffesional consulting engineer 3. By a recognized testing laboratory. Exceptions: Tack welds no later incorporated into finished welds carrying calculated loads.