PROBLEM TO BE SOLVED: To provide a reinforced structure of greenhouse being solid and scarcely causing deformation regardless of simple structure and low construction cost and capable of preventing breakage of a film by suppressing deformation of a film-fixing material. SOLUTION: In the greenhouse having a frame work composed of a plurality of arch-shaped pipes 11 arranged side by side in a line, straight pipes 12 for shoulders connecting those in parallel state and a purlin, a film-fixing material 21 extending through a single clamp 31 and an intermediate metal fittings 32 attached to the side of the single clamp 31 in the beam direction is fixed to the vicinities of at least both end surfaces of straight pipes 12 for shoulders and further, a reinforcing shape steel may be fitted into lower surface side of a film-fixing material having dew condensation water-recovering function, extending to the beam direction and installed in a roof part. COPYRIGHT: (C)2008,JPO&INPIT
