Pour Concrete Floor Gravel

Gravel is especially important in clay soil because it doesn t.
Pour concrete floor gravel. Add 2 inches to the depth for gravel if the soil is normally moist or has a high concentration of clay. Mechanically compact fill to at least 90 of a modified proctor density so as not to cause slab to sink. Time lapse video of my 40x60 pole barn floor being poured. Prior to pouring 2 to 6 of clean and drained sand or sandy gravel is spread below where concrete is to be poured.
Because you re pouring the floor in sections you need to build wooden forms for the sections as you pour them. What type of gravel under concrete slab. Most concrete slabs will sit 1 to 2 inches higher than the dirt and 2 to 3 inches below the surface of the dirt making the needed depth of the hole 3 to 5 inches. A concrete slab on which a building is erected is a fairly simple concrete pour but it takes more work in creating the forms needed to hold the concrete.
A pour within a foundation requires little in the way of forming but in some cases can be a bit more difficult to pour especially on larger projects.