Volt curve or brick volt
Drawing labels, details, and other text information extracted from the CAD file (Translated from Spanish):
waterproofing, npt, cut by facade of curved vault, mnmdcckckdkd, gutter, flattened lime, cement, grout, cement, lime, sand, chamfer, light earth, coating of barnis in partition and beams, floor of brick settled with mortar in compacted floor , stone foundation, chain of rebellion