I'm planning to move the kitchen to a new room and I am wondering about the load-bearing capacity of the floor structure, that is, what will become the kitchen floor.
Floor joists: cc 600 mm Joist dimensions: 3 inches x 8 inches ö-virke. Joists' free span length: about 4m - 4.12m
I'm considering if it will hold to install underfloor heating loops, use self-leveling compound, and lay tiles, as well as having a kitchen there. Currently, there are 22 mm chipboard floor panels nailed to the joists.
The room measures 4.12x3.16
(however, I don't need to lay tiles and self-leveling compound over the entire area as the kitchen cabinets cover one long side 4.13x0.63 meters, fridge etc. 1.8 x0.63 meters, kitchen island 1.60x0.65 meters)
(I can take a better picture of the drawing if needed)
It sounds like very good load-bearing capacity - there should probably be a calculator online if you want to calculate deflection, etc., though. The problem is probably not whether it holds but rather if it can crack due to deflection.
In the vacation home, I have 45x195 /cc1200 4.8m span with 22mm chipboard flooring - no problems laying tiles on it if I had wanted to (a small part is tiled). However, you should ideally lay on a dead surface before the adhesive, so gypsum board on the chipboard is preferable so the grout doesn't crack...
