Hi Pinenot. If I've understood your questions, we are creating a ground floor meditation room, peace cafe/lounge, entrance hall, toilets and small plant rooms in a semi-detached 1920/1930s house having ground, first and second floors. We are extending (doubling) the ground floor area and renovating the rest of the house, including considerable structural steel.
The new ground floor will be a concrete slab that will be non-structural, i.e. inside the existing and new structural walls and steels. The original floor was timber suspended on sleeper walls, which we have removed - we need more ceiling height. The earth is clay, although towards the front of the house (it's on a site which slopes downwards from back to front) there seems to be a fill of better earth which we plan to compact, probably clay will be underneath it at some depth. The clay is somewhat variable, but the majority of it has stones in it - good news. We've dug about 200 mm down below the original oversite concrete for the floor foundation.
We have a lot of masonry from the site which we can carefully clean of plaster etc, and then crush to 40mm max particle size for the sub-base.
We need to hire or borrow a crusher. Any suggestions?
I'm thinking of a 150 mm deep crushed brick sub-base, suitably compacted. Above the sub-base of crushed brick will be blinding of coarse sand (25 mm?), DPM, concrete slab 100 mm depth (ok?) with A142 mesh at mid level, then 100 or 120 mm celotex or similar with central heating pipes, and then one of the liquid flowing screeds at 50 mm depth. Does this seem ok?
We need to hire, buy or borrow a whacker or roller - hence my original post.
We have various other equipment, including a cement mixer - which we don't plan to use for this! What kind of equipment would you like to know about?
Hope this is what you were asking for and helps people to give advice.
John