I'm working on the slab perimeter and am going to put in a 900mm gravel skirt around the house on top of some geofabric. I've got an ag-drain at about 900mm so I want to grade it from the slab to the ag drain. I've bought a hand tamper.
The level around the slab is uneven so my question is how do you go about adding fill and tamping it. Do you just put more soil / clay in the depressions near the slab and simply tamp it on the slope/?
Trying to work out if just the process of tamping is enough for the water to flow away or I need particular materials e.g. heavy clay. Am I just trying to ensure the water doesn't pool next to it, but it's always going to get some water soaking in and that's OK?
Hand tamping grade around slab edge.
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I would be using builders plastic rather than a geofabric and then stabiised sand (1 part cement to 20 parts sand)
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