ASME A120.1-2006 pdf free download.Safety Requirements for Powered Platforms and Traveling Ladders and Gantries for Building Maintenance.
shoe brake: a brake in which the holding effect is obtained by applying pressure on two or more stationary segmental friction elements against a rotating cylindrical wheel or drum.
wire rope engaging: a brake that grips onto a wire rope, without damage to the rope, to prevent the descent of a suspended unit.
building: a structure wherein people may live, work, or otherwise make use of the facilities offered within the structure.
building face roller: a guide roller designed to ride on the face of the building wall to prevent the suspended or supported equipment from abrading the face of the building.
building maintenance: exterior or interior operations such as window cleaning, caulking, metal polishing, reglazing, and general light maintenance or repairs on building surfaces.
cable: a conductor, or group of conductors, enclosed in a weatherproof sheath, which may be used to supply electrical power or control currents for equipment and to provide voice communication circuits.
carriage: a wheeled vehicle used normally for the horizontal movements and support of equipment.
catalog strength: the rated strength of any product or material as designated by its manufacturer or vendor, based on standard testing procedures or acceptable engineering design practices.
certified: accepted by design, evaluation, or inspection by a registered professional engineer.
combination cable: ropes having both steel structural members for support of the equipment and copper or other electrical conductors insulated from each other and the structural members by nonconductive barriers.
continuous pressure: the requirement for a constant manual actuation of an operating control or device. control: a mechanism used to regulate or guide the operation of the equipment.
davit: a device for suspending a powered platform. Unlike outriggers, a davit reacts its operating moment load into a single pedestal, socket, carriage attachment, or other connection.
dropline: a vertical line from a fixed anchorage, independent of the work platform and its rigging, to which a lanyard is affixed. Droplines are also variously called lifelines, safety lines, ratlines, scarelines, etc.
dynamic load: loading induced by masses undergoing changes in velocity and loads varying with time. In application, a simulated static load surcharge may be assumed to be equivalent to dynamic effects.
obstruction detector: a device that will stop the suspended or supported unit in the direction of travel if an obstruction is encountered and will allow the unit to move only in a direction away from the obstruction.
operating device: a device actuated manually to activate a control.
outrigger: a device for suspending a powered platform. Unlike a davit, an outrigger reacts its operating moment load into at least two opposing vertical components acting into two or more distinct reaction points and/or attachments.
powered boatswain’s chair: a powered seat for one person suspended by a single line that is designed to be raised and lowered by the user.
powered platform: suspended or supported manned equipment that provides access to the face of a building for the purpose of maintenance.
prime mover: the source of mechanical power for a machine.
qualified person: a person with training and experience in the use, service, and repair of specific equipment. Training may be provided by the equipment manufactu rer.
rated load: as assigned by the manufacturer, the total load permitted on a hoist. The load includes the static weight of the suspended or supported unit plus the weight of the live load imposed on the hoist.
registered professional engineer: a person who has been duly registered and licensed by an authority within the United States to practice the profession of engineering.
remedial work: restoration, renovation, or modifications employing crafts associated with the construction industry, such as masonry, glazing, caulking, and carpentry.
remote powered platform and equipment: a powered platform or suspended equipment where the means of raising and lowering the suspended unit is located at an elevation or location other than on the platform or suspended unit.