We have an old utility building that we are planning to remodel for more modern use. Currently, there are several spaces, one of which is 7*7m with a packed earth floor and a crawl space foundation.
The natural question then becomes: How should we go about framing the floor? Should we place a stone in the middle of the floor for support and then attach the other joists to it?
If we are to use 7m long joists, I assume it would be quite expensive with laminated beams at that length and they would be quite tall.
I laid flooring in a barn this summer similar to what you describe. But it was a little shorter, 6x5. We dug out the topsoil layer (sheep had been in the barn, so it was mostly decomposed straw, etc.) and filled it with about 1 dm of gravel. It became 2 pieces 170x45 as support beams for the joists. I dug more and placed a larger stone for support in the middle. So the span became 2.5 m. But really, one should have cast a plinth. Then I framed 170x46 cc 600 on it. The joists were attached to the sill beam with joist hangers. For the floor, I used smooth tongue and groove 120x34. It's only dried to 16% but it's good enough for a barn.
The idea is that there will be at least 2dm between the substrate and the floor.
It's intended to be an insulated floor, I was thinking of using 170 as joists.
Picking up this thread. My need is somewhat similar. I'm planning to build an equipment room for solar equipment and batteries in part of the barn. Today, it's mostly clutter and storage there. The floor is soil and the ceiling height is just over 2 meters.
My idea is to dig out and pour in gravel or other capillary-breaking materials. Dig down posts and frame up a floor that is then insulated with foam plastic. Two of the walls will be against exterior walls. Size approximately 3x2 m max. Insulation in the floor, walls, and ceiling as well as ventilation to retain heat with the help of waste heat from the equipment.
Or is it better to go through the hassle of casting a slab?
Picking up this thread. My needs are somewhat similar. I plan to build a utility room for solar equipment and battery in part of the barn. Today, it’s mostly clutter and storage there. The floor is dirt, and the ceiling height is just over 2 m.
My idea is to dig out and fill in gravel or other capillary-breaking material. Dig down pillars and frame up a floor that is then insulated with foam. Two of the walls will be against the exterior walls. Size approximately 3x2 m max. Insulation in the floor, walls, and ceiling as well as ventilation to maintain heat with the help of waste heat from the equipment.
Or is it better to bother with casting a slab?
How did it turn out in the end, mattias?
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