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This International Standard provides a uniform method of calculating, and a test method for validating, rated lift capacity as presented in commercial literature for pipelayers and wheeled tractors or loaders equipped with a vertical-only pivoted, hydraulic or mechanically operated, side boom. The rated lift capacity considers hoist mechanism limits, tipping loads and rope factor. After the lift capacity has been calculated and validated, a reduction factor is applied to establish the rated lift capacity for the specific pipelayer or wheeled machine configuration. This International Standard applies to machines having a lift capacity greater than 10 000 N when used in lifting applications. It includes pipelayers as defined in ISO 6165 and ISO 7136, and wheeled tractors and loaders as defined in ISO 6165, ISO 6747 and ISO 7131.