Section 17-4. Training requirements relating to erection, removal, alteration and inspection of scaffolding when the top deck height of the scaffolding is from nine metres, and for scaffolding not erected as standard in accordance with the supplier's erection instructions.
a. erection of scaffolding constructions in a manner ensuring health and safety, when the scaffolding includes elements that require special strength and stability calculations, b. understanding of the specifications for a planned scaffolding construction, including strength and stability calculations and c. training in safe erection, removal and alteration of scaffolding construction, concerning own health and safety during the work and the health and safety of subsequent users.