Ditch roof
The trench roof is a roof shape that is characterized by a continuous ascent and descent of the flat roof surfaces . So it is a row of butterfly roofs of any length and is similar to the shed roof .
history
The ditch roof is found in the Inn-Salzach construction method ( Inn-Salzach style ). It represents a - before the invention of flat roof - from about the 16th to 17th centuries used possibility is, even large surface areas to roof sparingly.
It is covered by a facing gable , the drainage must take place by means of openings through the ridge wall. The ditch roof is not perceptible as such from the street, so the shape of the gable wall can be designed as desired - mostly simple with a flat top edge, but also romanized and other style elements - and is characterized by its typical "middle" in the wall, often elaborately crafted end pieces with the downpipe running down the surface. (For more details, see gutter or gallantry plumbing )
In more recent times, it is again at factories and other large buildings in the hall use because it structures in lightweight construction permits, which are often cheaper than massive concrete structures are. A striking example is the VT fold used in the GDR, but with no facing gables.
construction
The upper First - purlins and inferior purlins (thus the roof valleys of the grave roof) are either on inner walls, or span the interior space free between the outer walls.
Problems arise from stagnant moisture when there is insufficient removal of the precipitation, as well as inadequate thermal insulation or inadequate structural sealing against moisture. In addition, manual snow removal is extremely time-consuming.
literature
- Franz Martin : The Salzburg grave roof. Communications from the Anthropological Society in Vienna, Volume 56. Vienna 1926
