Gainsford Street, London
- Gainsford Street, London
- Spiral fire escape stairs
- CHD Ltd
Steel spiral staircase
This was a huge steel spiral staircase with two landing spaces the second to a set of straight treads.
Like most of our spiral fire escape stairs this one was fabricated in mild steel galvanised to ISO EN1461 and compliant with British Standard BS5395 Part II (Code of Practice for the design of helical and spiral stairs 1984). Galvanising is a cost-effective way of increasing durability and preventing corrosion on exterior spiral staircases.
The staircase balustrade had four uprights per tread fitted to a top rail with black PVC capping.
At a glance
|Floor to floor height:||5275mm and 3942mm|
|Risers:||21 @ 189.7mm, 28 @ 188.4mm|
|Tread radius:||41 @ 1250mm|
|Clear tread width:||1049mm|
|Tread type:||Durbar plate|
|Balustrade:||4 x 22m diameter uprights per tread with 40mm x 6mm top rail with black PVC capping|
|Landings:||First floor landing: 1265 x 1850mm in durbar plate|
|Additional:||Top of spiral stairs had 5 straight treads @1250mm leading to 2nd landing.|