If lumber is not structurally satisfactory why do we build permanent structures with it?
We lived on this staging for 6 months back in 2000. The columns are 20 feet tall, and the foundation is 5' above grade. So to the tip of the pediment it was 32' tall. It was built better than some new houses. When taken down, i built the people some heavy storage shelves in their basement with the leftovers.

Regular pipe staging would have been in the way of erecting the new wood columns.