I’ve become somewhat obsessed with this topic and the goal of it. I’ve had a go at the thing, to work out the total of sand required. It took (me) quite some figuring to make everything fit correctly. I used the technique shown by Jim Hamilton to create the tyre structure in this post:
The part that were a little tricky were the fact (to be tangent) each layer has unique tyres with different number of sides, so the sand that fills them for each layer (to be accurate) is unique as well. I basically filled the structure manually for each level. I probably could have merged the “inner” sand components into one, but I just left them separate kind of to show how it were done.
The tyre size I used were 225/50/17, not completely accurate modelling but a good idea of size.
If I’m honest, I would just stand there and say “that’s about x amount”, all this seems a little too labour intensive for my liking. Probably the hard way, but I gave it a shot.
TYRE PYRAMID IANT.skp (1.1 MB)