Document gbvamwGONO94qJ5Exov310EJa

Fig 16-4 -- The new layout greatly reduced the hazards, incidental to materials handling in this transformer manufacturing operation handling of materials, many unnecessary movements, and result m bad housekeeping -- in itself a prolific source of accidents Insufficient headroom at aisles, platforms, pipelines, overhead conveyors, other parts of the structure, and other installations is disclosed in studying the models A vertical distance of at least 7 ft generally is specified between passageways and stairways, and overhead structures to provide ample clear ance Overhead cranes and conveyors re quire at least 24 m of vertical and hori zontal clearance Trucks and other vehicles require enough room for movement without endangering men and equipment and need space to back and tum near machines Aisles should be wide enough to permit trucks to pass without colliding For one-way traffic, aisles should be not less than 3 ft wider than the widest vehicles Aisles for two-way traffic should be not less than 3 ft wider than twice the width of the widest vehicle These minimum widths are exceeded considerably m some new build ings where, because of anticipated heavy traffic, aisles from 12 to 20 ft wide have been specified Safe layout of aisles requires that there be no blind comers and that adequate radius be provided to allow for vehicle turns A 6-ft radius is large enough for small industrial trucks Aisles should be clearly defined with ap proved markings of either traffic paint or strip ing material Follow ASI Standard Z53 1, Safety Color Code for Marking Physical Hazards and the Identification of Certain Equipment Plastic buttons that are glued or fastened with metal fasteners to the floor are used by many because of their durability 401