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If you don’t put gravel under concrete, the concrete can crack, sink, bow, or crumble. Even the concrete forming process will not go as smoothly if you are working directly on the soil or bare bedrock. The lack of a proper gravel layer can also lead to drainage issues below your slab, leading to water issues throughout your lawn and around your foundation.

If it’s time to remove your deck, there are several advantages to replacing it with a patio. For example, you’ll pay much less to build a patio than a new deck, especially if the framework is compromised. A patio also needs less maintenance and will last longer. However, replacing your patio with a deck may not be an option if your terrain is on a slope.

Stepping stones should match an average human stride, so the general rule is to place them about 24 inches between stones. However, many designs put stones closer together. If you choose to plant in between them, leave at least 6 to 8 inches between stones to give plants room to grow.

While some areas may allow for a slope of up to 20%, this is often the maximum slope for driveways, with a few exceptions of up to 25%. Other regions may have a maximum of 12%, 15%, or 18%, so check with your local building department to ensure you’re laying a driveway that is up to code for your location.