Building The Great Pergola

We wanted a pre-fabricated pergola for our patio and found this one at Lowes.ImageProblem: how to keep it stable and not blow over in heavy winds without permanently attaching it to the concrete. ImageImage

Bought 4×4’s and metal base that holds 4×4’s.  Then bought 4 cement squares.  We bolted the 4×4’s into the metal base and screwed the metal base into the cement squares with special screws.  The legs of the pergola are hollow and fit perfectly over the 4×4’s.  Final step was leveling by using shims under the cement squares and then caulked the cement squares to the patio.  Voilà – Great place to relax.