Reglamento General de Seguridad e Higiene Industrial, Cap. IV -- Ascensores de personas. No incluido en el índice bajo Ley 149 de 12 dic, 2005

Screw machines shall be of the uncounterweighted type and shall conform to the requirements of this section and to the followings: a. The rated speed shall not exceed fifty (50) feet per minute. b. A car safety device conforming to Section 205 shall be provided unless other means are provided to limit the down speed of the car with rated load to not over one hundred and seventy-five (175) feet per minute if there is a failure of of the driving means. C. Where belts or chains are used to connect the motor to the driving machines the following requirements shall be conformed to: 1. Belts shall be of the multiple V-belt type. 2. Two or more separate chains shall be provided. 3. The driving means, whether belts or chains, shall have a factor of safety of not less than ten (10). 4. *The machine brake shall be so located that failure of the driving belt or chain will not prevent it from performing its intended function. d. The factor of safety of the screw as a column shall be not less than three (3) based on the total weight supported with rated load in the car. e. Means shall be provided to maintain the screw in its vertical position in case of excessive overtravel. - 81 - TEXTO EN ESPAÑOL USAS ,A17.1 k. La "Capacidad para Izar Cargas Integrales" de Ibid todo ascensor de tracción para personas no exce-