| 摘要 |
PROBLEM TO BE SOLVED: To provide a heat-insulated floor structure which can be easily constructed at low cost and which can surely press a floor material.SOLUTION: In a heat-insulated floor structure, a plurality of heat insulation plates 10 are butt-joined with each other without interposing common joists therebetween and mounted on a top face of a ground-beam sleeper 1, and a floor board 20 is laid on a top face of the heat insulation plates. A machine screw 30 having a thread groove part 31 formed in a front part and a flange 34 at a neck part is used and made to penetrate through the heat insulation plates from the top face of the floor board to screw the thread groove part into the ground-beam sleeper, and the flange is screwed into the floor board. Thereby, the floor board is supported by the flange of the machine screw and fixed to the ground-beam sleeper. |
