| 摘要 |
PROBLEM TO BE SOLVED: To provide a sound absorption floor structure capable of reducing labor of cavity construction, and easily changing the cavity volume.SOLUTION: A sound absorption floor structure comprises a floor panel 3 arranged above a floor slab 2, a support leg 4 for supporting the floor panel 3 and a cover 20 provided on an under surface of the floor panel 3, and the floor panel 3 comprises a through-hole 10, and the cover 20 covers the through-hole 10 from the lower side, and a cavity part 21 is formed of the under surface of the floor panel 3 and the cover 20. The through-hole 10 is blocked up by a film material 11 having air permeability, and a perforated plate-like protective material 12 is desirably laid on the film material 11. |
