[Animats]

What, the flying buttress falsework? That looks designed in a CAD program. Probably, all the pieces were cut to match the design, then bolted together. Better to do all that in advance and then carefully move it into place than to try to build it in place by hand.

One of the sections of falsework is being hoisted in the picture. Note the custom metal lifting attachment designed to fit it.

The supports are a nice piece of work, but routine. Now, restoring the damaged decorative stonework, that will require craftmanship and hand labor.