Recycle concrete + edge restraint question

[VanMarco]

Hello,

I'm new to paving, basically I am doing a section of paving in my backyard as I need it cool to put on a new shed and have a nice FLAT, surface to enjoy, rather than the old concrete sinking and pooling water.
The area ( I will post picture ) is about 20 sqm, at one side a wall (not a house wall), two sides with soil, and one side that rejoins the present concrete slab.
My two questions are:
1. As the old concrete slab, about 1.5/2 inches thick, has come off fairly easily and the pieces are fairly crackable into smaller piece, say 20/40 mill and I have time to crack them, may I reuse this material, as said before actually crushed well as a sub base, maybe mixing it with the MOT1? To me it would be such a waste to pay to dispose it.
2. My question about the edge restraint is that, I need to use CONCRETE, under the soldier course, not mortar, Correct?

Thanks in advance for your answer

[lutonlagerlout]

yes and yes vanmarco
LLL

[VanMarco]

Thanks for the answer

I may be a little bit confused over something, as I bought for a very cheap price 80mm pavers, If I understood correctly from the guide the difference in laying these (aside the 30mm deeper excavation) is that I will need to put more screeding sand, is that right? Thanksssss!!!

Tomorrow, Pictures

[msh paving]

^^^^^ NO
MSH

[mickg]

No the specification would always stay the same for sub base depth and sand laying course

eg
well compacted 100mm minimum MOT Type 1 sub base (for non traffic area)
30mm - 40mm sand laying course

you can use less depth of sand if you know what your doing but we have to advise the correct specification as per British Standard - but you would never use more

so you will need to excavate 220mm plus 150mm down from you damp proof course if any of the paving butts up to the house wall

that is the correct method