It seems the only thing 3D printed is the walls. I am sure all that visible lumber and those steel support posts were traditionally obtained. 3D printing the walls does not seem to save much over stick built or even poured concrete.
You have to wonder about the slag. During 24 hours period is there a continuous flow of fresh concrete. or there several large batches that the printer hopper keeps agitated? It would seem a situation like that you have concrete curing more optimal on the bottom and degrades the higher up it goes, until it ran and new fresh concrete was added.
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