Shallow arched masonry floor [FM2] - jcgomezz/Building_taxonomy GitHub Wiki
Shallow-arched masonry floor spans between metal, timber or concrete joists, with ballast fill and overlaid with flooring.
Masonry jack-arch construction (M. Lutman)
Shallow-arched masonry floor spans between metal, timber or concrete joists, with ballast fill and overlaid with flooring.
Masonry jack-arch construction (M. Lutman)