FACING STRUCTURE FOR A STAIR STEP FORWARD PORTION

摘要

A facing structure for a forward portion of steps of the stair comprises a working member made of a resilient material, a horizontal and a vertical fastening members connected to rearward and lower surfaces of the said working member. 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].