With regard to a bright tool shed - What is a wad of compacted crushed stone? I am having a pre-fab wood tool shed deliver. I...

I am having a pre-fab wood tool shed deliver. I am told to have a 12¡¯x16¡¯ wad compacted crushed stone 8-12" deep equipped for it. Is this something I can dig and pack myself...? What exactly goes into its assembly...?
Do I involve to verbs ABS pipe to...
Answers:    That's a pretty big shed...I would consider putting a concrete wad down, that way you can bolt it to the concrete wipe. Rather than just setting it higher than crushed stone.....
I think that approach cause I'm within earthquake country.....So if you live in earthquake or tornado country, something to infer about.....
Is hardwood a Composite wood?
I would frame up and smooth an 12 1/2 ft. X 16 1/2 ft area near treated 2x4's and pour a concrete slab.
You can do the same next to 2X8's and dig,verbs and fill beside crush and run gravel and rent a compacter. That is a big pick and shovel job. Maybe 6 pal and a keg.