it's going to be 20' long x 8' wide, split to give an 8 ft office, and a 12ft garage.
my query is about the slab. I was just going to shutter a box, 20'x8' and get a concrete truck in to pour it for me, but how thick should it be? would 1" be sufficient, or 2", or more? There's never going to be a great amount of load in there.
Minimum of 4" with some mesh in there too!
google is your friend
that would quickly break up if you walked on it, never mind anything else.
> google is your friend
+1 for advice provided by pavingexpert.com
I'd go for 6" thick concrete with some mesh reinforcement near the top surface (30mm down). Also it is important to protect against frost heave by digging down at least 450 below ground level and replacing the removed earth with hardcore which wont expand with frost. You probably also want a sheet of heavy duty polythene under the slab for damp proofing.
Tony Mc on Paving expert is where I would go for advice and I run a decent sized business in the paving sector.
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