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Home > Forums > Geotechnical Engineers > Activities > Soil testing engineering Forum

concrete slab built on fill

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Rottie1 (Mechanical)

11 Jul 12 17:14

When constructing a conrete slab for the base for paving should you be investigating the subgrade to determine if piering is required or does this type of slab not have to worry about piering because it is only being used for paving not intended for vehicular traffic?

molerat2210 (Geotechnical)

13 Jul 12 12:59

It is nice to know the modulus of subgrade reaction for the subgrade for design of the concrete slab. But, the thickness of the concrete slab is not very sensitive to this value. So, you can design the slab without if you use a conservative value.

Ron (Structural)

13 Jul 12 21:10

Rottie1...your post is very confusing. Why do you have a concrete base for a pavement? Concrete is generally the pavement surface. Further, piering is not a term generally associated with pavement. I'm in the US and we don't use the term "piering" a lot, but it is not in the context of pavements. Usually when discussing pavements we think in terms of "stability" for the subgrade, not "piering". While I try to understand terminology in an international context, I am confused by your use of the terms. Please clarify.

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