The permanent floor mounted on a foundation made of fire-resistant building materials in Ryogoku Kokugikan, as well as the temporary steel-framed floor of the other three facilities, are divided into square spaces, each square measuring about 1.5 m across.
国技館は耐火建材の土台にのった恒常床、他の三会場は鉄骨組みの仮設床が、それぞれ約1.5メートル四方の枡に仕切られた。