• Ancuta Nadia Jurco Technical University of Cluj-Napoca
  • Sanda Mariana Bodea Technical University of Cluj-Napoca
  • Horea George Crisan Technical University of Cluj-Napoca
  • Liviu-Iacob Scurtu Technical University of Cluj-Napoca


roof shape, descriptive geometry, developed surface, CAD


This work present two methods for determining the development of double-curved surface. The aims of this paper is to show a comparative study between methods for determination of the sheet metal requirements for complex roof cover shape. In first part of the paper are presented the basic sketch and information about the roof shape and some consecrated buildings, which have a complex roof shape. The second part of the paper shows two methods for determining the developed of the spherical roof. The graphical method is the first method used for developing of the spherical shape. In this method it used the poly-cylindrical method to develop the double-curved surface. The second method is accomplishing by using the dedicated CAD software method.


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Author Biographies

Ancuta Nadia Jurco, Technical University of Cluj-Napoca

Asist Prof at Dept. of Automotive Engineering and Transports

Sanda Mariana Bodea, Technical University of Cluj-Napoca

Assoc Prof Dept. of Automotive Engineering and Transports

Horea George Crisan, Technical University of Cluj-Napoca

Asist Prof at Dept. of Automotive Engineering and Transports

Liviu-Iacob Scurtu, Technical University of Cluj-Napoca

Lecturer Dept. of Automotive Engineering and Transports


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Applied Geometry and Graphics