Case Studies
Spiral fire escape stairs for the MOD
Spiral UK have been supplying the MOD with spiral escape stairs for over 30 years, so not only are we experienced in their design and manufacture, but our installation teams are familiar with the extra security procedures required for working on military sites. All of our fire escape stairs deliver against the exacting standards demanded by the MOD.
Recently we have worked with Aspire Defence who are responsible for building, improving and maintaining soldiers’ single living and working accommodation at Tidworth, Bulford, Warminster, Larkhill, Aldershot and Perham Down garrisons.
We are also working with Skanska UK who have the contract to deliver new infrastructure and accommodation at Worthy Down Barracks near Winchester.
On all these projects the MOD requirement has been for robust and functional spiral staircases as a means of external escape on accommodation blocks. All the fire escape stairs are made from galvanised mild steel and compliant with British Standard BS5395 Part II (Code of Practice for the design of helical and spiral stairs 1984).
- Project:
- Escape stairs for the MOD
- Requirement:
- External spiral escape staircases
- Contractors:
- Aspire Defence and Skanska UK
- Client:
- Ministry of Defence
Fire escape stair for Aspire Defence
Here is an example of a typical specification for an escape staircase at an Aspire Defence site
At a glance
| Floor to Floor Height: | 3400mm |
| Spiral Diameter: | 2100mm |
| Risers: | 15 @ 187.8mm, Open |
| Tread Radius: | 15 @ 1150mm |
| Clear Tread Width: | 879mm |
| Tread Type: | Durbar plate with drainage slots |
| Balustrade: | 2 x 22m diameter uprights per tread with 40mm x 6mm flat handrail with PVC capping |
| Landing: | 2065mm x 1490mm landing in durbar plate with drainage slots |
| Additional Info: | Mild steel galvanised to EN1471 |
Fire escape stair for Skanska UK
This specification for a three storey spiral escape staircase is typical for a Skanska site.
At a glance
| Floor to Floor Height: | 8775mm |
| Spiral Diameter: | 2500mm |
| Risers: | 48 @ 182.8mm, Open |
| Tread Radius: | 48 @ 1115mm |
| Clear Tread Width: | 1000mm |
| Tread type: | Folded treads in durbar with drainage slots |
