what's best
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"Hardcore" is a non-specific term. I think what you mean is "granular sub-base material", and the choice between using a rigid, concrete base or a flexible sub-base depends on the application. For most residential paving work, a flexible sub-base is sufficiently adequate.
"Hardcore" is a non-specific term. I think what you mean is "granular sub-base material", and the choice between using a rigid, concrete base or a flexible sub-base depends on the application. For most residential paving work, a flexible sub-base is sufficiently adequate.