I am planning to expand the cabin in the mountains by about 40 square meters. Part of the foundation, about 16 square meters, I plan to make as a storage room about 1.5 meters high. It will thus have a slab and masonry walls. It will be a cold storage with some heating on rare occasions. I need tips on insulation for the slab, reinforcement, etc. Should the load-bearing wall stand on the slab, etc.
