One of the arches in the Temple of Imperfections, that we're building, is similar to the two arches in the Pyro-mid we built nearly ten years ago. It uses the same chunky Romero red sandstone for the quoins, and is flanked by the same Sydney Peak mica schist material. Both have the same size openings and thickness of walls.
The variation being, the temple is a segmented Roman arch, the Pyro-mid is gothic shape, and of course the dry stone wall coursing flanking the arches is different, (one being horizontal and the other being laid at a 45 degrees).
It's very satisfying to compare the two structures. Which arch style do you like?
