| 摘要 |
<p>PROBLEM TO BE SOLVED: To prevent occurrence of staircase sound by a very simple constitution by filling the inside of a groove part formed on the lower face of a stage plate with an elastic adhesive and fitting the upper edge of a riser plate to the groove part. SOLUTION: The upper sides of wooden riser plates 2, 2 are fitted to the lower faces of wooden stage plates 1, 1 to construct a wooden staircase. In the assembling method, before the riser plate 2 is fitted, adhesives 3, 3 are filled into the inside of a groove part 1a along the groove part 1a, and the upper edge of the riser plate 2 is fitted to the groove part 1a. Therefore, the stage plate 1 and the riser plate 2 do not directly come into contact with each other, and even when large load is applied on ascending and descending the staircase, staircase sound does not occur. The groove part 1a is formed of a plurality of stage parts or if the upper side of the riser plate 2 is in the form of a projection, it is preferable.</p> |
