Out of the gate, I'll say, I'm thinking wood. But, the idea of concrete is still lingering in my brainpan. With that in mind...has anyone here poured a raised concrete slab, or gotten pre-cast slabs, ...
For an upcoming project, we needed a large, 1-3/4” thick piece of solid black walnut. Wood like this isn’t something you’ll find just anywhere, and when found, it’s rarely in the dimension you need.