Looks like limestone to me
You don't want to create a wet area.
You can't drain your water to neighbors land or council land ect.
You could dig out the area and use type...
As above, clay doesn't work as a soakaway, you just make a pond
Technique is everything when laying slabs.
Let the slab take the weight, walk the slab, rocking corner to corner.
Place slab on edge of laid...
Try washing powder and boiling water, scrub leave ,rinse ,repeat
You need course sand or grit sand which is also known as sharp
If wet laying with mortar you want building sand.
Your merchant seems to have...
6 X 2x2 40mm pressed grey slabs
I'd always try and keep water away from the house if possible.
You'll probably be ok with natural drainage but if it isn't sufficient you can...
As said , very poor job
I'm glad your not my neighbor , as above
Its plastic pipe.
You wont damage it with compacted mot stone ect .
Base it up, sand cement over pipe if you want to be ott and lay the patio....
Yes you are asking that.. avoid using cement.
Use geo-fix ,you simply pack into joint and finish with a brick iron.
4:1 , brick laying wet if using a mortar gun.
You would be better off using geo-fix jointing compound or similar.
Dry mix and damp down is very amateur and will last about a month before...
Fake grass gets very hot on sunny days, can burn kids and pets feet .
As said if you must ,do it properly
They will be easy. The 1200x600 wont be that heavy,far lighter than a 900x600 pressed concrete slab.
You either walk the slab if on your own,or...
I used to charge around £25 m2 for a pick up relay with sand only . 2016, so not long ago
If the base needed work that would depend on what was...
Cement comes in waterproof bags ,so not a problem.
Mix 4:1 for you paving.
One bulk bag will be close , wet mix use plasticiser and PVA with a full bed.
Brick laying wet not damp like the post earlier you commented on
Gravel board, 1.8 panel..hey presto 2m high fence
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