phillyphan Report post Posted January 8, 2018 I'm looking at adding about 1250sqft of concrete slab to my side yard where I store my travel trailer. I just moved into this home and the backyard is all dirt. My question to the concrete experts here is, what psi rating and thickness of concrete should I be requesting. I just got a quote for 3000 psi, 4" thick that I thought was pretty good. Now I'm not sure the psi is high enough after doing some research. Share this post Link to post Share on other sites
azruger Report post Posted January 8, 2018 I would personally go with 6" slab 3000 psi. With a rebar mat in ot. Just my personal opinion. I build bridge structures for a living. 2 Share this post Link to post Share on other sites
Flatlander Report post Posted January 8, 2018 Thickness depends on what your subgrade condition and reinforcing. Definitely get good compaction on the pad and then throw plenty of bar in it. Share this post Link to post Share on other sites
Bobbyhcp Report post Posted January 9, 2018 3000 5.5 thick with a3 foot rebar mat Share this post Link to post Share on other sites
countrykid Report post Posted January 9, 2018 I would go 6" with 3000psi w/ fiber. Putting rebar in will hold it together but it will crack like crazy. You'll be able to see exactly where your rebar mat is. 1 Share this post Link to post Share on other sites
5guyshunting Report post Posted January 9, 2018 5" slab 3000psi fiber mesh. No re-bar, you're not building a bridge. No offence azruger. 1 Share this post Link to post Share on other sites
phillyphan Report post Posted January 9, 2018 Thanks for all the suggestions. I'm in East Mesa, anyone want to offer up any quotes on the job, lol? Share this post Link to post Share on other sites
PRDATR Report post Posted January 9, 2018 How important is the slump? Share this post Link to post Share on other sites
twowindy Report post Posted January 9, 2018 I agree with 5guyshunting,I usually use 4000 psi 4inches thick with fibermesh but what he suggested would be fine.I've been pouring concrete for 30 plus years. 2 Share this post Link to post Share on other sites
phillyphan Report post Posted January 9, 2018 How important is the slump? Please excuse my ignorance, but whats a slump? Share this post Link to post Share on other sites
phillyphan Report post Posted January 9, 2018 I agree with 5guyshunting,I usually use 4000 psi 4inches thick with fibermesh but what he suggested would be fine.I've been pouring concrete for 30 plus years. So either 4" with 4000 psi or 5" with 3000 psi. But definitely not 4" with 3000 psi. And fiber mesh is a must. 1 Share this post Link to post Share on other sites
twowindy Report post Posted January 9, 2018 I'm a firm believer in fiber mesh,I think it is better than rebar in a slab.I've been using it for years with excellent results. Share this post Link to post Share on other sites
muledeerarea33? Report post Posted January 9, 2018 4-5000 with fiber mesh 5 thick. Less cracking than rebar if the compaction is 99% with a good base. And if the contractor knows how to work a slab. Share this post Link to post Share on other sites
Roosevelt Mark Report post Posted January 9, 2018 Micro fiber mesh adds no strength in breaks. Its for shrinkage cracking only. Stuctual fiber will replace steal. ( stux 90 40 WR Grace) for example. Share this post Link to post Share on other sites
ThomC Report post Posted January 9, 2018 Just throw anything cheep down like they do in pima county. Then take the money that you saved and buy a rest home for pit bulls. or open desert for ground squirrels. LOL Sorry Share this post Link to post Share on other sites
