SST temporary spiral staircase

The SST system allows the erection of a staircase with a maximum height of up to 18,430 mm (8 modules). Each module increases the height of the structure by approx. 2,280 mm.

The permissible loads are:- 2 kN/m² – permissible distributed load- 1.5 kN – permissible concentrated load (per 50 × 50 mm)- 0.3 kN/m – allowable load on the balustradeThis means that the system is adapted for intensive use on construction sites.

The stairs should be assembled on a levelled concrete substrate. Assembly on reinforced concrete slabs or concrete blocks is also permitted, provided that they are securely and stably set on a hardened substrate with effective drainage.

The system is stabilised with stabilising consoles mounted to the supporting structure. In addition, the whole structure is set on a base frame with four adjustable feet, which allows accurate levelling of the structure.

The SST staircase is a modular system, which enables quick assembly – in most cases within a few hours, depending on the height of the structure and the conditions on the construction site.The reduced assembly time results from the use of prefabricated intermediate modules and the reduction of fasteners such as screws and nuts. The individual segments are set on a base frame with adjustable feet and stabilised with consoles, which allows quick setting and levelling of the structure. The system can be assembled on a prepared concrete substrate, reinforced concrete slabs or concrete blocks, which additionally increases flexibility of use on different types of construction sites.