After the pour, we set our girt anchors to plum, aligned, and leveled. 15 piers in all, each directly under 15 6 x 6's that will support the entire frame. After backfilling around the sonotubes, the 2 x 2' footer acts as an anchor. The footers are poured directly on bedrock 2' deep.
Homemade butt welding jig adapted from a pair of Vise-Grips by welding a length of angle iron to one jaw and two hold downs to the other. Intended to facilitate the process of aligning tubing for end-to-end welding.