How Driveways, Patios and Walkways Differ

Summary:

Cesar is clear that these are not the same job and should not be built the same way. A patio carries people and furniture, a walkway carries foot traffic, and a driveway carries vehicles — a concentrated, heavy, repeating load applied in the same spots every day for years. A driveway therefore requires a thicker slab, a deeper and better-built base, and more reinforcement than a patio does. The failure he sees most often is a driveway built to patio standards, or a patio slab extended so someone can park on it. Those look fine for a while, then break down precisely where tires sit and where vehicles turn. Once that starts, repair is rarely the answer.

Answer:

They're not the same job and they shouldn't be built the same. A patio holds people and furniture. A walkway holds people walking on it. A driveway holds vehicles, and a vehicle is a completely different kind of load. It's heavy, it's concentrated down on four points, it turns, and it does that same thing in the same spots every day for years. So a driveway needs more slab, more base under it, and more reinforcement in it than a patio does. The mistake I see all the time is somebody built a driveway like it was a patio, or somebody extended a patio slab out to park on and figured it would be fine. It looks fine for a while. Then you start seeing it break down right where the tires sit and right where you turn coming in off the street, because that's where all the load is going. Once that starts, you're usually not patching it. Getting it right the first time costs less than doing it twice.