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  #11  
Old 03-27-2014, 03:21 PM
Peasant
 
Join Date: Jul 2013
Location: Debden Green, Essex
Posts: 27
Default Re: Concrete slab strong enough?

I'm not a builder, but reckon you should get some local advice before you rip it all up.

From what i see you have removed all topsoil.claysoil and dropped a slab straight onto the clay.
Maybe because it's not reinforced, it's no use as a slab, but from a layman's point of view, isn't your existing slab already a layer of well compacted hardcore? If you don't mind the existing height, can you not run a whacker plate over the slab and then pour another reinforced slab on and around it? I could well be talking rubbish, but pulling up a slab is a lot of graft if you can get around it.
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  #12  
Old 03-27-2014, 06:24 PM
Novaslo's Avatar
Apprentice
 
Join Date: Dec 2013
Location: Paso Robles
Posts: 172
Default Re: Concrete slab strong enough?

Good luck....
You are getting some good advice here. After you break your back pulling it out you will be in better shape (Physically) at least....
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  #13  
Old 03-27-2014, 10:55 PM
Serf
 
Join Date: Mar 2014
Location: Uk
Posts: 17
Default Re: Concrete slab strong enough?

Too late pikemonkey it's already 3/4 up. Certainly back breaking work but every whack with the sledgehammer is a lesson in preparing properly in future. I tend to learn the hard way...
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  #14  
Old 04-02-2014, 05:10 PM
Peasant
 
Join Date: Jul 2013
Location: Debden Green, Essex
Posts: 27
Default Re: Concrete slab strong enough?

How are you getting on?
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  #15  
Old 04-03-2014, 06:09 AM
Serf
 
Join Date: Mar 2014
Location: Uk
Posts: 17
Default Re: Concrete slab strong enough?

Old slab up now and just need to dig it down a bit and get my rebar sorted and ready to pour. A bit behind as been building walls all weekend but hope you have it poured by this time next week. Any suggestions on my concrete mix? Got ballast that is 3 parts stone, 2 parts sand. Was just going to add one part cement and keep it simple.
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  #16  
Old 04-03-2014, 06:35 AM
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Il Pizzaiolo
 
Join Date: Jun 2007
Location: South Carolina,USA
Posts: 1,891
Default Re: Concrete slab strong enough?

What's your aggregate size?
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  #17  
Old 04-03-2014, 07:48 AM
Serf
 
Join Date: Mar 2014
Location: Uk
Posts: 17
Default Re: Concrete slab strong enough?

Probably about 20-25mm
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  #18  
Old 04-12-2014, 10:53 AM
Serf
 
Join Date: Mar 2014
Location: Uk
Posts: 17
Default Re: Concrete slab strong enough?

All systems go for attempt number 2. Tomorrow should be the day of the concrete pour and onwards from there. I'll start a build thread on here and post some pics as I go along. Thanks for the advice so far!! Any further advice, guidance, tips etc gratefully received...
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  #19  
Old 05-04-2014, 10:16 AM
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Join Date: Dec 2013
Location: Paso Robles
Posts: 172
Default Re: Concrete slab strong enough?

We need some pics!!
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  #20  
Old 05-04-2014, 02:05 PM
Peasant
 
Join Date: Jul 2013
Location: Debden Green, Essex
Posts: 27
Default Re: Concrete slab strong enough?

Quote:
Originally Posted by unclebhuna View Post
All systems go for attempt number 2. Tomorrow should be the day of the concrete pour and onwards from there. I'll start a build thread on here and post some pics as I go along. Thanks for the advice so far!! Any further advice, guidance, tips etc gratefully received...
i've been away for a while - how did you get on with pouring the base?
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