CULTIVATION CONSTRUCTION Russian patent published in 1995 - IPC

FIELD: agriculture, in particular, greenhouses, and like constructions. SUBSTANCE: cultivation construction has walls and roof functioning as carrier carcass and protective enclosure and manufactured from hose of transparent film so that cavity is defined, where any gas, for example air, may be evacuated. Cavities defined in areas adjacent to wall and roof sections are connected by lintels with return valve. Wall and roof sections are provided with hinges. Construction or its portions are embraced by flexible tie-rods fastened by anchors in ground along lower outline of walls. Tie-rods are adjusted by tensioning devices. Construction is mounted by unfolding flat members and placing them on ground along perimeter of walls of construction. Then anchors are driven into ground, covering is fastened and construction or its portions are embraced by tie-rods. Pneumatic mechanism is used to evacuate gas into primary member of construction. Then the whole construction is erected by expansion of composite members. Subsequently tie-rods are adjusted, entrance doors are mounted etc. Roof may be formed as single-layer membrane adapted for suspension or double-layer convex lens. A lighter-than-air gas or gas mixture, heated or cooled, with optical component, may be used as gas filler. EFFECT: reduced cost, simplified usage, absence of supports in inner space of construction, improved microclimate, increased working space and geographical universality. 4 cl, 8 dwg