What foundations does a steel pergola need?

Pergola posts have welded base plates that are anchored to concrete foundations. For the pergola carport we show the foundation layout on an installation drawing sent for approval before production, so you can pour the footings exactly where the posts will stand. Your builder sizes the footings to the ground and local frost depth, and the wall beam of a wall-mounted pergola fixes to masonry, concrete or a ring beam. Read the foundation planning guide.