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Meanix
07-13-2009, 06:01 PM
Going to look a a job tomorrow am. It is a wet laid flag job. Tear out pavers Install 4" clean add 6"concrete install flag over. My question is, is this ok? Do I need footers? What do I do with control joints, if I don't need footers? Can I just install 6" concrete with rebar? I have done wet lay before but not where drylaid is most practical? Any ideas will be appreciated.

SCgreenscapes
07-13-2009, 07:18 PM
we only put footers if there is a seat wall or something else heavy. We don't cut joints eaither. I don't know what is standard thickness in PA. but down here, you are fine with 4" of concrete for a base. Just make sure your subbase is nice and flat and well compacted. make sure to dig out any soft spots and fill with ABC

MuirView Design
07-13-2009, 08:48 PM
Rob, you need to pour a floating footer. Like you said 4" of clean and 6" of concrete will be fine. I know guys who will auger in a 36" sona tube every 10' and tie a steel grid into the rebar in the tubes before they pour. Basically it creates lentils to keep the footer from heaving.

Personally, I've always just done a reinforced floating footer with no issues. I just use a steel grid set up on chairs and that usually gives it enough strength to withstand any cracking.

Meanix
07-13-2009, 08:50 PM
Thanks SC I will price it for 4" base and 6" concrete pad

Meanix
07-13-2009, 08:55 PM
Adam the feet every 10' is a good idea obviously would be more stable with minimum added labor. As far as the grid goes are you talking about 4x4 wire or rebar?

MuirView Design
07-13-2009, 09:47 PM
Either or. I was referring to the 4x4 steel welded mesh. You just need something strong to unify the footer.

sancraig
07-13-2009, 10:25 PM
Cost and labor wise wouldnt it be cheaper to just pour some fiber crete?

Meanix
07-14-2009, 07:36 PM
The fiber crete is a bonus and would not take the place of rebar or 4x4. Meeting went well. I actually met with their designer. Always a good sign and I have a good refferal.

STLPONDS
07-14-2009, 10:49 PM
Cost and labor wise wouldnt it be cheaper to just pour some fiber crete?

That's how we pour. It must be a STL thing.