Arched polycarbonate greenhouse with retractable roofing sheets

Seasonal arched greenhouses with polycarbonate enclosing structures are widespread in small businesses. Mostly structures with permanently fixed polycarbonate roofing sheets are used; polycarbonate greenhouses with a partially opening roof are also used. A common disadvantage of the above types of greenhouses is the stationary fastening of cellular polycarbonate sheets to the elements of a steel frame or roof. Seasonal greenhouses are not used for about a third of their service life, and their enclosing structures in winter are additionally exposed to adverse meteorological influences that reduce the durability of polycarbonate sheets: UV radiation, mechanical abrasion by precipitation, snow loads, which leads to more frequent replacement of the roof. The purpose of the study was to improve the durability of roofing sheets. A constructive solution for an arched greenhouse has been developed with simple dismantling of the roof for the winter period and the formation of a strip ventilation opening at the ridge of the greenhouse in the warm season by lowering the roofing sheets.