Poured concrete is great for footings and foundation walls. However, a 4'' concrete slab will not carry the same weight distribution as interlocking concrete pavers. Interlocking concrete pavers carry over twice the pounds per square in in weight because they interlock in three different ways. This is why they are more practical for vehicular (driveways) applications Horizontal interlock - this is the pavers ability to resist side to side shifting movement, it is created by t