| 摘要 |
PURPOSE:To enhance workability and set easily a corner part at a specified angle and facilitate angular changes and diversify design and cut down the number of members. CONSTITUTION:In a staircase where a corner part is formed on a riser laid out below a tread, the tread is divided at the corner part and the thickness of one riser 1 is arranged to be larger than that of the other riser 2. A housing part 3 which houses the lateral edge of the corner part of the other riser 2 is installed to the lateral edge of the corner part on the rear surface of one riser 1 in a recessed manner. |
