Building construction problems for ,,covered roofs´´

Abstract

``Covered roof´´ is a new motif in contemporary building endeavors. The use of materials used thus far only to cover facades (stone, brick, concrete, wood, etc.) has brought about new problems on roofs, and necessitated development of new layer sequences. In accordance with a free design of buildings, optional pitches and shapes may be used on covered roofs. Conventional rules for roofing do not apply here. This paper will define concept of covered roofs, analyze possible layer sequences, and set out key designing principles. A multi-level drainage of rainwater, protection of slant layers against slide-off, handling of thermal expansion, and customized structural details are problems for which no sufficient literature and standards are available as yet.