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-   -   how thick of a base for clay soil? (https://www.diychatroom.com/f16/how-thick-base-clay-soil-48430/)

fabian 07-08-2009 08:28 PM

how thick of a base for clay soil?
 
I will be laying down a paver patio about 12 x 16 and I wanted to know how thick of a base should i compact when underneath its clay soil?

Also I have a friend of mine that can get me 3/4 inch blend (QP) for base and also stone dust for after that at NO charge. Is is possible to have a successful patio with these materials?

ccarlisle 07-09-2009 07:05 AM

1. Depends where your frost line is i.e. where you live...:mad:

2. Yes.:yes:

fabian 07-09-2009 02:08 PM

central jersey

Bondo 07-11-2009 08:38 AM

Ayuh,... If you're just Walking on it,... 4" to 6" should do...
If you're Driving on it,... 12" to 18" will do...

Aggie67 07-11-2009 10:32 AM

If you really have clay soil, you need to look into whether the soil itself needs to be compacted. We use a jumping jack to compact the heck out of clay soils.

If it were my house in my yard (central NJ), and I was redoing the pavers, I'd compact my soil with the jumping jack, then lay down some geotech fabric, then do the stone base, sand, etc. Moist, uncompacted clay soils like to move around like playdough when compressed. With the compaction and geotech fabric, I'd feel confident that such movement would be minimized.

Here's a decent link, also:

http://www.icpi.org/techspecs/index.cfm?id=31&tech=10

ccarlisle 07-11-2009 01:34 PM

We add 2" to all depth specifications due to freezing etc. So 4"-6" for a patio becomes 6"-8" depth for the aggregate. You may not need that much but it wouldn't hurt.


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