I have a cast iron bath tub in the back garden (great for the summer months!) that I wish to make a stable slab underneath it. It was set in a garden but it moved around too much so I have since moved it out of the garden and have it on a gravel area but I wish to slab underneath to stop any movement. Now the project doesn't need to be perfect but I would like this to be somewhat stable with no movement. I have some old bricks I wish to use for the project and my question is this (after reading many guides thanks to google):
1. Do I need to lay a concrete slab first, wait for this to dry and then use mortar to lay the brick?
2. Can I lay the concrete and insert the bricks into the wet concrete?
3. Would I need to use rio for this small slab or would that be overkill?
Like I said the project doesn't need to be perfect and it's not for a resort I'm just after some practical advice on the easiest, simplest way of building this slab whilst using up some of my old bricks that have just been in a pile waiting to be used.
