Concrete Mesh - Wire Thickness

I am building a patio home (concrete slab) and they will soon be pouring the foundation. One concrete worker that I know suggested that they should use 8 gauge mesh vs. 10 gauge mesh. I don&#;t know much about concrete to know if that would be a good idea for the extra cost or not. Approx. sq. feet. Any help would be appreciated.

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This is my first post with FineHomebuilding. Looks like a great place to get some answers.

Thanks.

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Opinions vary, and this is just my opinion based on my "good luck" on the 4 previous buildings I have had at 3 previous homes.

In regard to your Wire Mesh questions: stay away from the rolls, buy Wire Mesh Mats.

There's a lot of engineering that goes into concrete welded wire mesh. Here's a link fall that engineering: Standard Practice for Structural Welded Wire Reinforcement.. lot's of good data here:

The concrete wire mesh at Home Depot and your local lumber yard is typically 10 gauge, the thinnest wire mesh mat available.

8' x 20' concrete wire mesh mats are available from companies like HD WhiteCap (they have stores in Washington) in various gauges, such as 10, 6 and 4 gauge.

Here are some more links for you:

6 x 6-W2.9 x W2.9 6 ga 8' x 20' Wire Mesh Mat http://www.whitecap.com/shop/p/6-x-6-w29-6-ga-8-x-20-wire-mesh-mat-g820

6" x 6" W1.4 10 ga 8' x 20' Wire Mesh Mat http://www.whitecap.com/shop/p/6-x-6-w14-10-ga-8-x-20-wire-mesh-mat-g820

To support the wire mesh mats use concrete dobies. These are square pieces of concrete with a wire in them that allows you to tie it to the mesh.

Here's a link to various dobies:

And this is the size I used. I picked them up at the local HD Whitecap for 0.28 cents a piece:

I'd caution you on the use of bricks. Ideally you want a product that the concrete will adhere to, and that wouldn't degrade over time and leave a void. Nothing is better than concrete for this application.

If you use 6 gauge concrete wire mesh, on concrete dobies spaced on 24" centers, it is a stiff enough assembly such that it stays where you want it.

Hope this helps. Good luck with your project.

As a side note:

I would recommend against the use cattle panels that Evilunclegrimace recommended above. Most of these panels have a non-uniform panel layout which creates non-uniform stresses in the concrete. Concrete wire mesh is made from high tensile strength steel specifically manufactured, welded and tested for it's intended purpose. Cattle panels are made for, well, cattle.&#;

Model A Fan I think your choice of wire mesh is a good one for a properly designed residential slab that doesn't see high loads and that has a properly compacted sub-grade. The wire mesh 6" square pattern is better than re-bar spacing of 18" or 24".Opinions vary, and this is just my opinion based on my "good luck" on the 4 previous buildings I have had at 3 previous homes.In regard to your Wire Mesh questions: stay away from the rolls, buy Wire Mesh Mats.There's a lot of engineering that goes into concrete welded wire mesh. Here's a link fall that engineering: Standard Practice for Structural Welded Wire Reinforcement.. lot's of good data here: http://files.engineering.com/getfil...c=.1.&__hsfp= The concrete wire mesh at Home Depot and your local lumber yard is typically 10 gauge, the thinnest wire mesh mat available.8' x 20' concrete wire mesh mats are available from companies like HD WhiteCap (they have stores in Washington) in various gauges, such as 10, 6 and 4 gauge.Here are some more links for you:To support the wire mesh mats use concrete dobies. These are square pieces of concrete with a wire in them that allows you to tie it to the mesh.Here's a link to various dobies: http://www.whitecap.com/shop/wc/search?searchTerm=dobie And this is the size I used. I picked them up at the local HD Whitecap for 0.28 cents a piece: http://www.whitecap.com/shop/p/dayton-superior-cwd-2-dobie-with-wire- I'd caution you on the use of bricks. Ideally you want a product that the concrete will adhere to, and that wouldn't degrade over time and leave a void. Nothing is better than concrete for this application.If you use 6 gauge concrete wire mesh, on concrete dobies spaced on 24" centers, it is a stiff enough assembly such that it stays where you want it.Hope this helps. Good luck with your project.As a side note:

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