- foundations for and erection of portal and bridge cranes; - foundations for and assembly of work equipment for loading and offloading ships; - foundations for and erection of tower cranes; - installation of transverse cranes and hoists tracks/rails; - installation of pillar and wall slewing cranes; - installation of suspended work platforms, - assembly of climbing scaffolds for heights exceeding 3 metres; - assembly and installation of building site lifts; and - retrofitting of cranes with a capacity exceeding 2 tm on vehicles and other mobile plants.