Terraces are produced from impregnated wood. The terrace element consists of boarding and the battens that hold them together. Two main solutions are used depending on the terrace foundation: tightly placed concrete pillars or belts onto which the terrace elements are installed, or spaced concrete pillars onto which impregnated wooden beams are installed with the terrace elements being installed onto them. Generally terraces are not watertight and rainwater seeps through the terrace boards into the ground.
The terrace will be provided with barriers when the architectural project requires it or when barriers are necessary for safety reasons – if the terrace is more than 0.5 m above the surrounding ground.
The accompanying image shows a principal solution for a terrace element.