| 摘要 |
PROBLEM TO BE SOLVED: To provide a floor panel material which is reducible in weight and cost.SOLUTION: A floor panel material 1 which is laid on a floor surface and formed of a synthetic resin has a plurality of legs 22 which are erected on the floor surface, and ceiling plates 21 arranged at upper parts of the legs 22 and along the floor surface. Openings extending to directions in which the two-point legs 22 are connected are formed at the ceiling plates 21, and vertical ribs 50 (55) extending downwardly from at least one edge of the opening and the ceiling plates 21 of the vertical ribs 50 (55) have horizontal ribs 51 (56) which extend sideways from sides opposite to the ceiling pates 21. |
