Intended for use by persons who are permitted to enter sites of engineering and construction, this standard describes power operated temporarily installed builders hoists, serving either one upper landing or a work area extending to the end of the guides, (e.g a roof) having a load carrying device (lcd): which is intended for the transportation of goods only; where it is forbidden for persons to step upon it at any time; which is guided; is sustained by steel wire rope and a positive drive syste system; controlled by hold-to-run controls by the operator; does not benefit from the use of any counterweight; has a maximum rated load of 300 kg; is designed to travel at an angle of at least 30 degrees to the vertical but may be used at any angle between the vertical and maximum inclination as specified by manufacturer.