| 摘要 |
PROBLEM TO BE SOLVED: To provide a double floor structure capable of securing impact resistance while reducing a solid sound.SOLUTION: The double floor structure 1 comprises a plurality of support legs 10 provided on an upper surface of a floor skeleton 4 of a room 3 and a floor surface material 5 supported by the plurality of these support legs 10. The support legs 10 comprise a pedestal 20 installed on the upper surface of the floor skeleton 4, a shaft part 30 provided on this pedestal and extending in the substantially vertical direction and a support part 40 provided in an upper part of the shaft part 30 and supporting the floor surface material 5. The shaft part 30 of a central part support leg 10A installed in a central part of the room 3 is made of steel, and the shaft part 30 of an end part support leg 10B installed in an end part of the room 3 is made of a synthetic resin. |
