Concrete Slab Thickness?

[Jamo 90]

got my hardcore down and need to work out what thickness i can get away with for my slab, the only weight on the slab will be 3x2m of galv panels and 23kg dog

 

was going to do 3inches but wondering if i can do it 2-2.5?

 

any help appreciated

[the_stig 6,614]

mine are 6 someone told me 6 min to avoid cracking in frost -- dunno if its right but been down 9 year a looks like new...

[long dog 125]

i would do a 6inch slab with reinforce mesh bar just make shore you get the stone base compacted well.

ATB long dog

[toby63 1,236]

mine is 2mx2m 4"thick

[Jamo 90]

thanks for the replys, the ground was compact just took the grass off of it then put the hardcore down, the 3m square has a concrete border all the way round so i dont see it slipping/cracking away?

 

this is why i dont think it should need more than 3" as its not a slab being laid on its own any opinions on that ? cheers

[Cleanspade 3,322]

three inch. but make sure your base is well regulated and of an even depth, as your base will only be as strong as the weakest point.

[Jamo 90]

i have part of the border cut out to 3inch so il go with that, thanks for all info il give the hardcore another going over to be sure

[CWN-HELA 228]

compact you base with a wacker plate. put plent of cement, good mix 4 buckets of aggrigate to 1 bucket of cement ( BUILDERS BUCKET ) dont make the mix like piss, when laying the concrete tap with a level, oh screed off your wood on the sides with a 3x2 PAR give you a good finish. 1 BAG OF CEMENT WILL MAKE 2 MIXES FOR YOU. it up 2 you if you want a 4" trowel down the edge of the timber edge.

[Qbgrey 4,067]

if the hard cores laid on topsoil,or shit ground thats worse than thin concrete.good base and 75 to 100mm is enough

[Early riser 22]

4 to 1 mix and 100mm thick will be fine on well compacted hardcore. You don't want the frost taking the face off the concrete because it will just be a mess. Tamp well and I'd float finish it so concrete is more sealed and not so porous to soak piss and crap up. Hope this helps.

[JonnyGitts 10]

4inches fella it will be fine then

[mikeball 108]

Put 6 shovels of sand and gravel in a mixer with water put a full bag of cement into that keep it nice and wet fill the rest if the mixer with your sand and gravel. That will make you a good strong mix. On a good hardcore base that's been wacker plated u will only need 2 inch concrete atb