| 摘要 |
The present invention relates to a drainage plate for a floor, which is to discharge and lead penetration water flowing through a floor layer to an already installed collection well not to influence an inner space of an underground layer when the floor layer in a lowermost part of a basement of a building which is formed as the ground is excavated at a predetermined depth and in a predetermined area. The drainage plate for a floor includes: a base plate having a square plate shape; and a pier unit which is concave on the upper surface of each part of a predetermined arrangement on the base plate and is convex on the lower surface. The length continuously crosses the base plate between the pier units from an end of one side in horizontal and/or vertical directions to the end of the other side. The cross-section in the width direction has one or more convex parts to the upper side or the lower side, and the convex part comprises an elastic unit enabling the width to become separated or narrow as a curved rate of the convex part is changed to correspond to physical power applied in the width direction. |
