After setting the pin foundations (with a jack hammer & special pipe driving bit), the support posts can go on right away. Here we see Brian trusting his eye more than the post level and Tony keeping one step ahead of Brain, literally and figuratively.

Notice the rope hanging out of the tree? Before we could set the foundations, this oak got a professional pruning job by Steve, our certified arborist. This ensures no workers (or kids!) will be hurt by any dead branches falling from above.