A challenging wood construction, mostly a roof truss model, shall be built for the European Competition. The competitor shall independently solve the following tasks in the prescribed time of 22 working hours:

• Elevation, development and assembly of a roof construction
• Development of angle and valley rafters on polygonal, rectangular or square ground plans with even and uneven roof slopes
• Construction of tower roofs including adjustment to the general roof construction

The following working techniques for the solution of a task could be possible:

• Elevation of a roof construction in ground plan and profile
• Developing a construction in which each piece of wood can be found in its true shape.
• Determining all measurements, dimensions, lengths, cuts, angles and bevels required to perform the work.
• Drawing and transferring of real lengths and cuts to the pieces of wood (scribing).
• Processing the work pieces (assembly).
• Mounting and fixing all wooden parts of the structure (erection).

The final task shall be specified by the assessment commission directly before the beginning of the European Competition. Each participating country can present a suggestion in advance. The experts choose the final task from all suggestions and convert them for the most part into details at short notice.