Covers power operated temporarily installed builders hoists (referred to as "hoists" in this standard) intended for use by persons who are permitted to enter sites of engineering and construction, serving landing levels, have a load carrying device: guided; designed for the transportation of goods only; travelling vertically or along a path with 15 deg.max, of the vehicle; where masts, when erected, may or may not require support from separate structures; supported or sustained by drum driven wire rope, chain, rack and pinion, hydraulic jack (direct or indirect), or an expanding linkage mechanism; which are driven by appointed persons; which permits the access of instructed persons during loading and unloading; which permits, if necessary, during erection, dismantling, maintenance, and inspection.