Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work (conveying in general B65G; lifting devices B66; working stone-like materials B28D; measuring instruments G01)

Child Classifications

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• E04G 21/005
• E04G 21/02 Conveying or working-up concrete or similar masses able to be heaped or cast (in connection with finishing work E04F; construction and surfacing of floorings made of similar material to roads or pavements E01C; in connection with barrages E02B7/00; in connection with foundations E02D15/00; composition of concrete C04B; working concrete in general, e.g. mixing machines B28C)
• E04G 21/12 Mounting of reinforcing inserts; Prestressing (shell tubes for prestressing members E04C5/10; anchoring means E04C5/12; connections of reinforcing elements and spacers E04C5/16)
• E04G 21/14 Conveying or assembling building elements (roofing E04D; finishing work E04F)
• E04G 21/24 Safety or protective measures preventing damage to building parts or finishing work during construction (as auxiliary structures for scaffolds E04G, )
• E04G 21/32 Safety or protective measures for persons during the construction of buildings (relating to scaffolds E04G5/00; climbing tools, e.g. climbing irons for masts A63B27/00; ropes or belts for life saving A62B1/16, A62B35/00)