Concrete run for lawnmower

[roberta1000]

I've got a single brick wall with piers on the inside all round my house. For quite a distance (40m-50m) there's lawn laid right up to it and it's a right pain to mow or strim. I'm planning to lay a narrow strip of concrete all round coming a couple of inches out past the piers so that I can run the mower round easily. I don't want to just clear a border because of the work in keeping it weeded and edged.

Will it be good enough to just take 3 inches or so of turf/soil out, shutter it and fill with concrete or will I need to take it deeper (how deep?) and put in some Type 1? It won't take much traffic and I don't want to overdo things unneccessarily plus the aggro of working round the wall's footings. (Clay ground by the way)

Thanks!

 

[joe-90]

You can get a concrete additive from Wickes that you add to the mix that stops it cracking. 4 inches would be better but with the additive I reckon 3 would be OK for what you want.

 

[Thermo]

4 inches should do it. make sure you leave expansion joints in the concrete and dont just do it all as one big run, otherwise it will lead to cracking

 

[roberta1000]

OK thanks - 4" it is. Hadn't considered expansion joints. The run will only be about 7" wide or so - what spacing between gaps do you think and what width?