FLOOR DRAIN STRUCTURE AND CONSTRUCTION METHOD OF FLOOR DRAIN STRUCTURE

To provide a floor drain structure that does not require much construction work and prevents water from accumulating in a water slope part by providing a water slope of stable quality.SOLUTION: In a floor drainage structure 11, an integral drain trap 40 is provided in a drainage hole 30 of a floor structure 20, and a drainage port 24 is formed by an opening part 41a at an upper end of the integral drain trap 40. A sloped floor part 52 that protrudes to the side of a body part 41 is provided at the upper end of the integrated drain trap 40, and an installation recess part 26 in which the sloped floor part 52 is installed is provided around the drainage port. The sloped floor part 52 has an upper surface 55 that is thicker toward an outer circumference part from a periphery of a perforated plate 43 and is inclined so as to extend upward toward the outer circumference part.SELECTED DRAWING: Figure 1 【課題】施工の手間がかからず、安定した品質の水勾配が設けられることで、水勾配部分に水溜まりができにくい床排水構造を提供する。【解決手段】床排水構造１１では、一体型排水トラップ４０が床構造物２０の排水用孔３０に設けられ、一体型排水トラップ４０の上端の開口部４１ａによって排水口２４が形成されている。一体型排水トラップ４０の上端部には、本体部４１の側方に突出する勾配床部５２が設けられ、排水口の周囲には勾配床部５２を設置する設置凹部２６が設けられている。勾配床部５２は、目皿４３の周囲から外周側ほど厚くなり、かつ外周側ほど上方に延びるように傾斜する上面５５を有している。【選択図】 図１