Concrete is a material that is subjective to versatility and value engineering, admixtures and reinforcing designs can and will reflect that.
The simple thing to remember when constructing anything is what you have designed, been done so thoroughly, and does it meet the intended purpose ?
What will you be using this concrete slab for, heavy point loading, trucks, tractors, heavy machinery etc. ? Whatever it may be you want the design of it to match the loading or exceed it for future or unintended uses that may require it to be stronger. Will it be exposed to harsh substances, like salt is on a highway bridge for example.
Most times it pays to build a slab according to a design that meets the use and then some, woven wire mesh is fine to use, though concrete is porous and has capillaries, you can address issues with corrosion of reinforcing like woven wire mesh reinforcing slab design, which will most likely provide a higher compressive strength than a fiber reinforce mix design, same is true with using deformed metal bars (rebar) just that it will cost more. Woven wire mesh will be fine for reinforcing, for an interior slab, sidewalk maybe not the best choice for a wash bay for example, that is where you spend the money on epoxy coated rebar or similar.
6" slab will provide you with a nice structural loading value, especially with reinforcing. Maybe you call for 5000 psi and place rebar accordingly to achieve an acceptable structural loading value or vice versa, less psi, more reinforcing etc.
Sub-base compaction is critical to the stability of the slab, that has to be done right. I can't say what the differences in compressive strength will be between woven wire mesh, fiber and or rebar, but there will be cost differentials of same. If were me, I'd want a proven mix design from the supplier, one they use all the time like for D.O.T. or similar, and do some research on structural values, like compressive strength, for the different slab designs, woven wire mesh, fiber, and rebar, see what matches what you need for loading the closest and what you can afford. I think we'd all prefer a 12" x 12" grid of #4 or larger deformed bars, but doing that would be cost prohibitive, would make a very strong slab though.
I always suggest taking 4 test cylinders, and make sure the supplier, contractor is aware of that, it would be very helpful if there was a claim or the material failed, very simple thing to do when the material arrives.
Do not forget all stub ups, for the buildings needs, now and the future, easy to put in a sleeve, extra conduit and similar for future use and make sure the layout and or structural details are coordinated with the new building if has not already been done, good to plan ahead here, once the material is placed, too late to do any of that.
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Today's Featured Article - Listening to Your Tractor - by Curtis Von Fange. Years ago there was a TV show about a talking car. Unless you are from another planet, physically or otherwise, I don’t think our internal combustion buddies will talk and tell us their problems. But, on the other hand, there is a secret language that our mechanical companions readily do speak. It is an interesting form of communication that involves all the senses of the listener. In this series we are going to investigate and learn the basic rudimentary skills of understanding this lingo.
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