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Bespoke Staircases

Case Studies

NIAB, Cambridge

This steel spiral staircase was for the John Bingham building at NIAB’s newly rebuilt headquarters in Cambridge. NIAB are a UK based not for profit crop science organisation working in the field of agri-science and business internationally.

They have redeveloped their headquarters into an innovative campus style development of offices, laboratories, growth room facilities and meeting rooms.

Spiral UK were contracted by SDC Builders to create a category E fire escape staircase. This category of spiral staircase is a public stair for use by a large number of people at one time.

Steel spiral staircase
Steel spiral staircase

The fire escape spiral stairs we designed, manufactured and installed had two large landings and special cross bar support columns.

Not only does it function as a spiral staircase fire escape, but it creates quite a feature on the side of this modern building.

NIAB, Cambridge
Spiral fire escape stairs
SDC Builders Ltd

Fire escape spiral stair

This steel spiral staircase, like many of the external spiral staircases we produce, was galvanised for durability. Galvanising is a cost-effective way of preventing corrosion on external spiral staircases.

The escape stair was made from steel with treads in a non-slip pattern with drainage holes. The balustrade consisted of vertical uprights and perforated aluminium sheet infill panels.

This escape stairs is accessed by two large steel landings fabricated with non-slip decking and attached to the building. The steel spiral staircase itself is freestanding.

At a glance

Floor to floor height: 3150mm, 2920mm
Spiral diameter: 2,540mm
Risers: 17 @ 178.5mm, 16 @ 182.5mm
Clear tread width: 1000mm
Treads: 31 @ 1270mm radius, 4.5mm in non-slip plate
Balustrade: Vertical uprights every third tread supporting a handrail with perforated aluminium infill panels
Landings: 2 x 1340mm x 3720mm landings with 3mm non slip decking and box frame
Steel spiral stairs
Spiral fire escape stairs
External spiral fire escape stairs
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