| 摘要 |
PROBLEM TO BE SOLVED: To provide a stair in which the strength of a stair tread can be improved while suppressing cost.SOLUTION: A stair comprises a hollow stair tread 1 and a bracket 2 supporting both end portions of the stair tread 1. The stair tread 1 includes a suspension piece 3 on the front surface thereof, and the bracket 2 is hidden by the suspension piece 3. |
