This Technical Report classifies machinery and equipment used in the building and construction industry into three hierarchical levels, and nine groups and into subgroups. It covers machines and equipment employed in the majority of works in the field, classified according to their specified use. In as far as possible, and where existent, International Standards corresponding to subgroups are specified. The ISO Technical Committees responsible for the International Standards are also given, together with, for the convenience of the user, any related European standards. NOTE See the Bibliography for the titles of the standards listed.