ASME B56.6 pdf download SAFETY STANDARD FOR ROUGH TERRA ORKLIFT TRUCKS
This Srandard defines the safety requirements relatingto the elements of design,operation, and maintenanceof rough terrain forklift trucks.These trucks are intendedfor operation on unimproved natural terrain as well asthe disturbed terrain of construction sites.
A rough terrain forklift truck is defined as a wheeled-type truck designed primarily as a fork truck with avertical mast and/or a pivoted boom,variable reach orof fixed length，which may be equipped with attach-ments. This truck is intended for operation on unim-proved natural terrain as well as the disturbed terrainof construction sites.This definition excludes machinesdesigned primarily for earth moving， such as loadersand dozers. even though their buckets and blades arereplaced with forks，and machines designed primarilyas over-the-road trucks equipped with lifting devices.
The purpose of this Standard is to promote safetythrough the design,construction,application,operation,and maintenance of rough terain forklift trucks. ThisStandard may be used as a guide by governmentalauthorities desiring to formulate safety rules and regula-tions. This Standard is also intended for voluntary useby others associated with manufacture or utilizing roughterrain forklift trucks.
4.1 Mandatory and Advisory Rules
To carry out the provisions of this Standard,allitems in Parts ll and lIl are mandatory except thoseincluding the word should, which are recommendations.
4.2Classification of Approved Rough Terrain
The word approved means the classification or listingof rough terrain forklift trucks as to fire. explosion.andor electric shock hazard by a nationally recognizedtesting laboratory. i.e.. a laboratory qualifed andequipped to conduct examinations and tests such asthose prescribed by Underwriters Laboratories，Inc.
For terminology not included in Nonmandatory Ap-pendix A,refer to ANSI Z94.0.
4.4 Requests for Interpretation
The B56 Committee will render an interpretation ofany requirement of this Standard. Interpretations willberendered only in response to a written requestsent to the Secretary of the B56 Committee.ASMEInternational，Three Park Avenue,New York,NY10016-5990.The request for interpretation shall be inthe following format.
Subject: Cite the applicable paragraph number(s) and
provide a concise description.
Edition: Cite the applicable edition of the pertinent
standard for which the interpretation is beingrequested.
Question: Phrase the question as a request for an
interpretation of a specific roquiremcnt suit-able for general understanding and use,notas a request for approval of a proprictarydesign or situation. The inquirer may alsoinclude any plans or drawings that are neces-sary to explain the question; however, theyshould not contain proprietary names orinformation.