KOROK® has 2-way fire-rated wall systems for fire separation of Scissor Stairs or any Stairs.
KOROK® Scissor Stair Systems are proprietary, non-loadbearing, two-way fire-rated wall systems designed to provide fire and acoustic separation between independent stair flights within scissor stair configurations or other stair arrangements.
The system utilises 78mm thick interlocking KOROK® panels installed between two independent stair stringers to form a continuous fire-resisting barrier. Panels may be oriented vertically, horizontally, or in combination to suit stair geometry and construction sequencing requirements.
The system is BRANZ tested and Warringtonfire assessed, and is intended to meet or exceed the performance requirements of the New Zealand Building Code (NZBC) and NCC Australia within the defined scope.
How the System Works
KOROK® Scissor Stair Systems are constructed using 78mm thick panels comprising roll-formed galvanised or colour steel outer shells with an aerated concrete core and interlocking tongue-and-groove profiles, forming a continuous, tightly sealed wall plane that reduces the risk of acoustic leakage between stair flights. The system is non-combustible and provides two-way fire resistance when exposed from either side. In fire conditions:
- Horizontal fire resistance is achieved through a quadrilateral fire-resistant section formed between the two independent stairs
- Vertical fire resistance is achieved through the wall-to-stair stringer boundary condition
