This woodworking project is abouthow to anchor a post to a concrete slab. If you want to build a pergola, railings or even a deck, in most of the cases you need to know more about anchoring  a post to concrete. In most of the cases, you this is a straight-forward process, but you need to follow the right instructions and to read the local building codes. Invest in adjustable post anchors, as it will pay off on the long term.