Abstract
Research represents designing and modeling of summer fabric awning against weather conditions. A membrane is fixed on rigid supporting frame. This frame has four linear sides. There is a presentation of shell construction design, which geometric shape consists of four plane fabric cutting patterns. A number of calculation patterns of geometric parameters of the concerned elements are presented. The method of use of mesh with isolateral tetragonal cells on a curved surface was applied. Contour lines are taken as the longitudinal axis of the cutting elements. This axis follows the geodesic line on the surface and directed orthogonally to the contour lines. The finally cut form of the elements results in the transformation of the mesh form once it is reorganized to the plane and expansion of the fabric from pretension loads. The manufacture of the shell construction completes with interconnection of four triangular work pieces by its sides. These sides are curvilinear therefore they are straightened by stretching during its installation. The elaborated calculation methods and algorithms are implemented in software and experimentally tested on the designed and manufactured fabric models of hypar.
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