ASME A120.1:2008 pdf free download

ASME A120.1:2008 pdf free download.Safety Requirements for Powered Platforms and Traveling Ladders and Gantries for Building Maintenance.
ASME A120.1 establishes safety requirements for powered platforms (scaffolds) for buildings where window cleaning and related services are accomplished by means of suspended equipment at heights in excess of 35 ft (II m) above a safe surface (e.g., grade, street, floor, or roof level). Additionally, this Standard establishes safety requirements for permanent traveling ladders and gantries TLG).
It pertains to either permanently installed or transportable equipment meeting the requirements of this Standard.
Powered platforms and TLGs may be used or operated by one or more persons engaged in services such as normal building maintenance, The equipment may also be used for tasks such as caulking, metal polishing, reglazing, or other building repairs.
This Standard does not apply to other suspended powered platforms used for remedial renovations or modifications to buildings. The safe use of these scaffolds is included in ANSI A1O.8-2001, Safety Requirements for Scaffolding.
This Standard does not relate to any service performed by persons supported by equipment covered by any of the ANSI A92 standards.
1.2 Purpose
The purpose of this Standard is to ensure the protection of powered platform users and traveling ladder and gantry users, and persons exposed to equipment used with the previously described maintenance of buildings.
It is also intended for use by architects, engineers. designers, manufacturers, inspectors, purchasers, building owners, and others associated with the installation of powered platforms and traveling ladders and gantries.
Additionally, it is recommended for use by enforcement agencies having jurisdiction over the installation of powered platforms and traveling ladders and gantries to ensure that the platforms meet the safety provisions of this Standard.
brake, secondary: a brake designed to prevent the descent of the suspended or supported equipment in the event of an overspeed condition.
brake types
disc: a brake in which the holding effect is obtained by frictional resistance between faces of rotating discs or shoes.
self-energizing band: a unidirectional brake in which the braking action is obtained by frictional resistance between a stationary flexible brake band and a rotating drum, whereby the friction force increases the holding force or pressure on the friction surfaces.
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/ace 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 mainteijance: 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.