Seashell biomimicry allowed the builders to extract and deploy calcium under mantles, and these soft living tissues were genetically engineered to shapes that allowed the architects to layer bioceramic stuctures one on the next, building structure on structure, like corals, until the area under the tent by now is almost full. Like most bioceramics structures, the beveled and layered shapes have been induced to produce scalloping, fanning, notching, and other conchological features, so that the buildings look like great seashells stacked one on the next.
