How to convert files from Tekla
to Open CASCADE?

Tekla, owned by Trimble is a software product family that consists of programs for analysis and design. Tekla software includes several applications.

Tekla Structures is 3D BIM software widely used in the building and construction industries. The software allows users to create and operate 3D structural models in concrete or steel and leads them through the process from concept to fabrication.

Tekla Structural Designer is a software app for analysis and construction design. It is used by structural engineers.

Tekla Tedds is a software solution for automating repetitive calculations. It is used in engineering for creating output such as calculations, sketches and notes.

Tekla BIMsight is an application for building information model-based construction project collaboration.

In solid modeling and computer-aided design, boundary representation—often abbreviated as B-rep or BREP—is a method for representing shapes using the limits. A solid is represented as a collection of connected surface elements, the boundary between solid and non-solid.

Boundary representation of models are composed of two parts: topology and geometry (surfaces, curves and points). The main topological items are: faces, edges and vertices. A face is a bounded portion of a surface; an edge is a bounded piece of a curve and a vertex lies at a point. Other elements are the shell (a set of connected faces), the loop (a circuit of edges bounding a face) and loop-edge links (also known as winged edge links or half-edges) which are used to create the edge circuits. The edges are like the edges of a table, bounding a surface portion.

Compared to the constructive solid geometry (CSG) representation, which uses only primitive objects and Boolean operations to combine them, boundary representation is more flexible and has a much richer operation set. In addition to the Boolean operations, B-rep has extrusion (or sweeping), chamfer, blending, drafting, shelling, tweaking and other operations which make use of these.