DDScad Construction

Specially tailored for Scandinavian style timber frame houses

Construction (Timber Frame) is one of the two modules that DDScad Architect & Construction consist of. The other module is the Architect module.


Joist Module

The working sheet is the plan drawing, produced with the Architect module or imported from other CAD systems via DXF/DWG. The user works with this drawing in simple dialogue to construct the joists. The drawings are produced automatically. The user may interactively adjust the beams according to the requirements of the construction i.e. to extend or to shorten the tie beam beside stairs and chimneys, as well as change the dimensions of the beams. Functions for strengthening the beams, for instance with fish-plates and module joists, are available in the program. The user may choose special details for each end of the joist.

In the cutting list all important information is stored for each joist: Type, cross section area, length, cutting angle, detail reference, joist number, and number of joists. The cutting list may be printed out or inserted directly into the drawing. The joists may at any time be displayed in 3D.

Wall panel module

The wall module works mainly automatically with reference to the 3D model from the Architect module. As an alternative, DDScad provides a modern interface via IFC/IAI when data is to be read from other CAD systems. The user defines in a simplified plan drawing the walls, which will be connected, to each other. The program automatically inserts the selected number of studs at the wall connection. In the same way reinforcement for supports, beams and roof trusses will be handled. The user defines in a special wall menu a selection of construction for corners, windows and doors. At this stage, the decision must be taken for the necessary sections, the wall dimensioning and the generation of the cutting list. From all this information the program will automatically generate the construction of the walls, including all inner and outer plates, battens and cladding.

The program provides many construction samples in parametric form for corners, windows, doors, connection points etc. All construction details can be changed or added on by the user. The wall module has a built-in function for splitting a continuous wall into wall sections or panels. After such splitting, all the wall panels will be displayed coherently. The user can modify the wall construction interactively. Each wall can be constructed three-dimensional. All walls can be assembled together and displayed as a 3D model.

Floor and Roof Panel Module

The floor and roof panel module is based on the same principle as the wall panel module. The panel layout is made in the Architect module. The user defines, in a simplified plan drawing, special details and strengthening of the panels. After having defined the timber dimensions and the special detailing on how the panels are connected, the program will automatically generate the construction of the panels, including joists, battens and boards.

Roof Module

The roof module is mainly based on the 2D roof plan drawing. All functions of the joist module are available in this module. There are also special functions to handle different roof angles. The roof angle will be used for length adjustment and distance between the battens etc. Thus the production can be precisely prepared.

Interface to Production

From the Construction module, a number of production saws, joinery machines and production lines can be controlled. Using such interfaces will save a lot of manual work and reduce potential errors. Additionally, DDScad provided an open generic machine protocol that contains all necessary data for joinery and assembly.

Interface to and from other CAD systems

Drawing information

  • AutoCAD compatible 2D DXF/DWG

"Intelligent" building information models

  • Intelligent BIM communication using buildingSMART/IFC (IFC is used as format also between Architect and Construction)
  • Various Bill of Material and QTO formats
  • Integrations with RoofCon/TrussCon using proprietary formats

Render and animation

  • Integrated rendering with ray-tracing and hatching (export bitmap formats)
  • Integrated animation movies (AVI) and QuickTimeMovie (MOV)
  • Export to 3Dstudio (3DS)


  • DWF and SVF for vector based drawings.
  • BMP, JPG, GIF for raster based drawings.
  • VRML (VRL) for animation