scaffolding

rakennustelineet A temporary modular system of tubes forming a framework used to support people and material in the construction or repair of buildings and other large structures.
{{quote-journal|date=December 21, 2007|author=The New York Times|title=Museum and Gallery Listings|work=New York Times|url=http://www.nytimes.com/2007/12/21/arts/design/21art.html
(present participle of)