| 摘要 |
PROBLEM TO BE SOLVED: To improve effect for suppressing weight impulse-sound by increasing the rigidity of a floor constituted by spreading floor panels consisting of a plurality of cement panels all over a beam, and to enhance workability and reliability. SOLUTION: Floor panels 2, in which joint grooves 2a are formed at the corner sections of long-side header faces, are laid all over beams 1, and reinforcing boards 4, in which lower sections are supported to the beams 1 and upper sections are faced oppositely to the joint grooves 2a, are arranged to joints 3 formed among the adjacent floor panels 2. Rigidity is increased and weight impulse-sound performance is improved by filling the joint grooves 2a with mortar 5 and mutually unifying the adjacent floor panels 2 and reinforcing boards 4. The lower sections of the reinforcing boards 4 are projected to the base 2b sides of the floor panels 2, and the projecting sections are used as mounting foundations for metal fittings such as a hanger, from which a ceiling is hung down, a hanger, from which pipings are suspended, etc. |
