Slow-draining clay makes moisture part of the structural planning. The city's soil guidance describes low infiltration and cracking when moisture is uneven. Expansive black clay causes failures when movement pushes shallow posts out of alignment. We apply the one-third depth rule to concrete footings and check where water collects around posts and gate pads. Footing depth and drainage need to be considered together.
The average single-family home is 17 years old and 3,148 square feet. Those figures describe the housing stock, not the available working space beside a house. We measure access for removing old materials, placing concrete and moving gate sections rather than assuming a larger home has a wider entrance.
Driveway grade also shapes gate selection. We check a swing gate's full travel against the driveway surface. For a sliding gate, we measure the space beside the opening and examine the proposed travel path for low spots that collect water.


