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- Material S235 JR
- Manufactured acc to
- Hot Dip Galvanised (S235) acc to EN ISO 1461 (SS 3583)
The Spiral staircases are characterized by easy installation that can be done by following the supplied technical documentation when
the standardised parts are put togehter.
The staircase is dimensioned to a surface load of 3.5 kN/m2 or individual load 1.5 kN concentrated
into the load area of 100x100 mm located at the walkway edge, 100 mm from the outside edge of the stair tread.
The top platform
and steps are usually manufactured of SP-type with 25x2 mm carrying bars and 34/38 mm opening. The outside diameter of ready installades
staircase are as standard 1600, 1800 and 2000 mm.
Stair treads and top platform are bolted to the central tube
. Further on, the railing is bolted to the stair treads and platform.