| 摘要 |
A facing structure for a forward portion of steps of the stair (1) comprises a working member (2) made of a resilient material, a horizontal (4) and a vertical (3) fastening members connected to rearward (6) and lower (5) surfaces of the said working member (2). The thickness H of the working member and the modulus of elasticity E of a resilient material satisfy the relationships: H>h+h1, E<=Hxk, where: h-the thickness of a facing material of the horizontal surface of stair steps [m], h1-the thickness of the horizontal fastening member [m], k=1011[n/m3]. |
