Help laying concrete edging and aco drainage

[markyyyyyy]

I am installing a new patio and I’ve dug down 17cm (22mm slab, 50mm mortar bed, 100mm hardcore compacted)

I am installing some flat topped concrete edging (900mm x 150mm x 50mm) over a total length of 9 metres

Along he front edge of patio I am installing an aco drain

Do I need to lay some MOT hardcore before installing the aco drain and edging or do I just compact the soil and concrete the edging and aco drainage in?

What mix do I use for the concrete?
Can i just use sharp sand and cement at 4:1 ratio or do I need to use concrete?

Many thanks in advance

 

[Wayners]

Not my area but I wouldn't of thought lay on hardcore and sharp sand.
Concrete will make if difficult to repair drain if required.

Edit.

Ignore. Better advise below

 

[noseall]

I am installing a new patio and I’ve dug down 17cm (22mm slab, 50mm mortar bed, 100mm hardcore compacted)

I am installing some flat topped concrete edging (900mm x 150mm x 50mm) over a total length of 9 metres

Along he front edge of patio I am installing an aco drain

Do I need to lay some MOT hardcore before installing the aco drain and edging or do I just compact the soil and concrete the edging and aco drainage in?

What mix do I use for the concrete?
Can i just use sharp sand and cement at 4:1 ratio or do I need to use concrete?

Many thanks in advance

Acos can be run with concrete bed plus compacted stone beneath, if needs be. We like to use a fatty concrete mix, i.e. regular 6:1 ballast/cement mix, but replace one of those 6 shovels of ballat with a shovel of screed.

 

[noseall]

Not my area but I wouldn't of thought lay on hardcore and sharp sand.
Concrete will make if difficult to repair drain if required

It's not like constructing a wall. Kerbs, Acos etc, will happily sit on a concrete race with compact hard core beneath.

 

[markyyyyyy]

Acos can be run with concrete bed plus compacted stone beneath, if needs be. We like to use a fatty concrete mix, i.e. regular 6:1 ballast/cement mix, but replace one of those 6 shovels of ballat with a shovel of screed.

Thanks for your reply

So a decent chunky mix for bedding in the aco drain

As for the concrete edging (patio only, no car use) is it worth making a concrete mix using pea gravel or is a mortar mix okay to bed the edging stones in?

Cheers

 

[noseall]

Thanks for your reply

So a decent chunky mix for bedding in the aco drain

As for the concrete edging (patio only, no car use) is it worth making a concrete mix using pea gravel or is a mortar mix okay to bed the edging stones in?

Cheers

Lay edgings with same suggested mix.

 

[markyyyyyy]

Lay edgings with same suggested mix.

Cheers
I have 9m total length for edging and a 4m length of aco drain to install against a current path edge

Any idea how much ballast I will need?

Will small bags suffice or will I need a tonne bag?