| 摘要 |
PROBLEM TO BE SOLVED: To improve the work efficiency on the site by stacking heat insulating material, first heat accumulating material, a heat generating material, and second heat accumulating material in order from on an under board, in each space between an upper board and the lower board. SOLUTION: A heater 4 and heat accumulating material 5 are united with a joist together with heat insulating material 6. That is, three pieces of joists 3 are arranged in parallel at equal intervals, and an upper board 7 and a lower board 8 are fixed to its top and bottom each. The upper board 7 and the under board 8 are plywood material made of wood, and the top and bottom face of the joist 3 are fixed, using wood screws or an adhesive, and also for the under board 8, plywood fitted with cushion is used to improve the sound insulation property. Accordingly, the work execution is completed merely by carrying the heater 4, the heat accumulating material 5, and the heat insulating material 6 onto the site in condition that they are united with the joist 3, and arranging them on a slab 2, and laying the joist 3 across, so the labor of work execution can be lightened. |
