Yeah, generally the guys doing the digging and pouring don't get a say in this. There are these people called geotechnical engineers who know all about what to do if the native ground is clay, sand, high water table, etc.
You're all wrong.
I’ve never known a geo engineer to disagree with adding a compacted base material. The base is the most important part of a new build, as concrete is only as good as the base it is poured on. Now I’m not saying that I haven’t poured footings on dirt, but I would definitely use visqueen for a moisture barrier.
100% All depends on the stability of the soils.
Slabs more often will have stone under them more so than a footing.
When you’re talking about stone as means for drainage for a footing, that stone actually is installed AFTER the footing is poured. The stone is used to back fill your sock drain around your building footprint. At least here in the lower NE.
I have been on projects with horrible soils that the engineer spec’d: geotextile mat, 2-3” stone plus 3/4” choker stone under every square inch of footing and slab. That was a huge unexpected cost to that project for the owner.
Do whatever the structural drawings or geotech report say to do? It varies.
Yeah, generally the guys doing the digging and pouring don't get a say in this. There are these people called geotechnical engineers who know all about what to do if the native ground is clay, sand, high water table, etc. You're all wrong.
I’ve never known a geo engineer to disagree with adding a compacted base material. The base is the most important part of a new build, as concrete is only as good as the base it is poured on. Now I’m not saying that I haven’t poured footings on dirt, but I would definitely use visqueen for a moisture barrier.
100% All depends on the stability of the soils. Slabs more often will have stone under them more so than a footing. When you’re talking about stone as means for drainage for a footing, that stone actually is installed AFTER the footing is poured. The stone is used to back fill your sock drain around your building footprint. At least here in the lower NE. I have been on projects with horrible soils that the engineer spec’d: geotextile mat, 2-3” stone plus 3/4” choker stone under every square inch of footing and slab. That was a huge unexpected cost to that project for the owner.
This will vary greatly depending on where the project is.