Graepel-Garden spiral stairway step

Weld-in spiral staircase step

The Graepel-Garden weld-in spiral stairway step is made of raw steel (DD 11) and is suitable for use in public areas. The spiral staircase step can be welded to a central pipe by the customer. It is designed for a uniformly distributed load of 5 kN/m² and a concentrated load of 1.5 kN for 200 x 200 mm. The surface has a semi-spherical embossment facing upward (d = 4 mm) and punched holes facing downward, with a diameter of 8 mm, which are arranged in staggered rows.

The open cross-section is approx. 9 %, providing this step with anti-slip and displacement properties as well as good drainage. The step can be walked on barefoot.

The material thickness is 2.5 mm. The perforation or embossment runs parallel to the stair’s nosing. The corners are not welded. The spiral staircase step can be supplied with a left- or right-hand turn, for different stair radii, and different center support column diameters.

More information about Graepel-Garden embossment.

 

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