Inside scaffolding for large metallic structures and method of using same

摘要

The invention relates to a fabrication process of a metallic structure made of sheets welded one onto the other and enclosing an internal space. A scaffolding is erected in this internal space and comprises a vertical tower and collapsible passageways extending radially from said tower. When the structure is substantially terminated, the passageways are collapsed and the scaffolding is withdrawn from said space through an aperture provided at the upper part of the structure.