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World Bank study of the substitution of labor and equipment : the use of agricultural tractor / trailer (Inglés)

This memorandum describes the use of agricultural tractors to haul construction materials in trailers, explains the problems in their use and discusses ways of overcoming these problems. Various options are analyzed, such as the choice between two- and four-wheeled trailers, tipping trailers and ballasting of the tractor. The question of load transfer from trailer to tractor and to the manner in which this affects the traction available to the tractor...
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