Advice on laying slabs over grass and soil

[AV73]

I am just about to start paving a 30 metre squared area in my garden over existing grass. Can anyone tell me how deep I need to be with my bedding? Do I need to lay ballast and then sharp sand on top of that? Should I also use a whacking plate? Don't know what slabs I will use yet, probably 450mm.
I am thinking of using a moist mix too. Any advice would really be appreciated as we've got a little one on the way and I need to get it right!!

[Carberry]

Take some time to read the site, all the required information is there.

Can't say for sure how deep you need to go, it depends on ground conditions but at a minimum you will want 75mm for subbase, 30mm for bedding layer and whatever the thickness of your slab is.

Use type 1 for your sub base. You need to use a whacking plate, go over it at least 8 times, once in each direction.

[local patios and driveway]

I would go 6inches below finished height. I would also advise laying terram under the type 1

[lutonlagerlout]

you need to remove all grass and vegetation first
then make a cup of tea and have a good read
LLL

[AV73]

Thanks for your replies. Much appreciated.