1. steel
If the bay distance is two meter and the infill corrugated steel, than 260 mm high beams are sufficient. The system that is uses is called Planja.
2. steel-wood
These elements from steel C-profiles and wood board cladding are made by the manufacturer FlexFrame.
3. wood I-joists
Like in a Passive house, these high I shaped beams can be put every 300 mm with insulation in between.
4. wood joints
Inspired by traditional techniques and with the use of industrial production. Elaboration will follow.
5. solid wood
This system is brought on the Dutch market by Q-concept and declared as best floor from LCA viewpoint ().
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