METHOD OF MANUFACTURING STRUCTURAL SHAPES THAT CAN BE BENT BY HAND AND STIFFENED WITHOUT ANY FURTHER WELD MATERIAL, AND STRUCTURAL SHAPES OBTAINED THEREFROM TO BE USED AS ROUND CONSTRUCTIONS FOR WALLS, FALSE CEILINGS AND THE LIKE

摘要

A method of manufacturing structural shapes by cutting slots in plates preferably of metal an then shaping the same to obtain structural shapes that can be bent by hand and stiffened by punching pliers or fastening screws to block permanently the material of the structural shape also without using stiffening ribbings as additional materials. This feature is the novel basic concept of the present invention and is applied to obtain a wide rang eof different structural shapes that can be used in buildings and for particular technical solutions.