Tubing and post anchoring

Radient tubing is attached to the wire grid with zip ties (>500 were used). This is larger tubing than most people use (7/8"), but provides more BTU/ft than most other and has less pump loss. It is a bear to wrestle with though when tying it down. I did 2 folded reverse spirals and this requires that you know where you are going to end and is a bit tedious with the pier obstructions and the pump basin in the way.

Tubing connections with valves, temperature probes, and manifold.

Center beam posts are now anchored to the footings so they cannot shake off (common earthquake retrofit task).

Plates on the top also keep them from vibrating out under strong shaking.