GRP-stairtreads

The steps must absorb the following loads at their nosing:

• with a tread width of small 1200 mm – 1.50 kN single load distributed over an area of 100 x 100 mm at your nosing in the middle of the step.
• for a running width greater than 1200 mm – 1.50 kN single load distributed over an area of 100×100 mm at intervals of 600 mm at the nosing.
• the deflection between the supporting structure and the steps under load must not exceed 1/300 of the span, max. 6.00 mm.