Hi, does anyone know what the minimum height is allowed to be for a free-floating deck, I.e. not attached to any other structure.

basically, my vision is to build a deck on a flat piece of ground, not attached to a house or another structure; but one that can be stepped on to from a path. Around 5x5m, or 5x4m - something like that.

by the time I have posts, beams, joists and decking that all adds up to some depth - what do you reckon is the minimum I could go to?