A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
To provide a circular staircase having a tread surface shape that prevents a person from falling down several steps due to missteps or slippage on the center side of the circular staircase while securing the width of each tread.SOLUTION: A circular staircase 100 has a plurality of treads 10, 20, 30 horizontally arranged with a certain step, whose edges 11, 21, 31 extend outward from the center side of the circular staircase. Tread surfaces 1, 2, 3 of each of the treads 10, 20, 30 have a shape in which a region of a square S in a plan view is divided into a plurality of areas with the edges 11, 21, 31 as boundary lines between the tread surfaces 1, 2, 3, respectively. The minimum width L2 of each of the tread surfaces 1, 2, 3 of the treads 10, 20, 30 is equal to the length of one side of the square S. The edges 11, 31 of the treads 1, 3 extend outward from a point P2 inside the area of the square S as a starting point.SELECTED DRAWING: Figure 1
【課題】各踏板の幅を確保しつつ、廻り中心側における足の踏み外しや滑りによる数段下への転落を防止する踏面形状を有する廻り階段を提供する。【解決手段】廻り階段１００は、一定の段差を設けて水平に配置された複数の各踏板１０，２０，３０の段鼻１１、２１、３１が廻りの中心側から外側方向に伸びており、各踏板１０，２０，３０の踏面１，２，３は、平面視正方形Ｓの領域が段鼻１１，２１，３１を踏面１，２，３同士の境界線として複数に分割された形状を有し、踏板１０，２０，３０各々の踏面１，２，３の最小幅Ｌ２は、正方形Ｓの１辺の長さと同一の長さであり、踏板１，３の段鼻１１，３１は、正方形Ｓの領域の内側の点Ｐ２を始点として外側方向に伸びている。【選択図】図１
To provide a circular staircase having a tread surface shape that prevents a person from falling down several steps due to missteps or slippage on the center side of the circular staircase while securing the width of each tread.SOLUTION: A circular staircase 100 has a plurality of treads 10, 20, 30 horizontally arranged with a certain step, whose edges 11, 21, 31 extend outward from the center side of the circular staircase. Tread surfaces 1, 2, 3 of each of the treads 10, 20, 30 have a shape in which a region of a square S in a plan view is divided into a plurality of areas with the edges 11, 21, 31 as boundary lines between the tread surfaces 1, 2, 3, respectively. The minimum width L2 of each of the tread surfaces 1, 2, 3 of the treads 10, 20, 30 is equal to the length of one side of the square S. The edges 11, 31 of the treads 1, 3 extend outward from a point P2 inside the area of the square S as a starting point.SELECTED DRAWING: Figure 1
【課題】各踏板の幅を確保しつつ、廻り中心側における足の踏み外しや滑りによる数段下への転落を防止する踏面形状を有する廻り階段を提供する。【解決手段】廻り階段１００は、一定の段差を設けて水平に配置された複数の各踏板１０，２０，３０の段鼻１１、２１、３１が廻りの中心側から外側方向に伸びており、各踏板１０，２０，３０の踏面１，２，３は、平面視正方形Ｓの領域が段鼻１１，２１，３１を踏面１，２，３同士の境界線として複数に分割された形状を有し、踏板１０，２０，３０各々の踏面１，２，３の最小幅Ｌ２は、正方形Ｓの１辺の長さと同一の長さであり、踏板１，３の段鼻１１，３１は、正方形Ｓの領域の内側の点Ｐ２を始点として外側方向に伸びている。【選択図】図１
CIRCULAR STAIRCASE
廻り階段
KUMAI KOJI (author)
2023-08-09
Patent
Electronic Resource
Japanese
IPC:
E04F
FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
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