Tube and Fitting Scaffold Staircases - 4 Lug Treads

Best Practice - Consider at all locations

• Whilst System staircases are typically used for access on Morgan Sindall sites, we do occasionally use tube and fitting staircases. Tube & fitting stair treads with a single lug per side have the potential to rotate around the central fixing point which can lead to falls.
• Where tube & fitting stair treads with a single lug per side are used it is mandatory that they are installed with an additional transom or check fittings & tubes below the leading edge of the tread to prevent the step from rotating.
• An alternative is to use treads with 2 lugs per side (sometimes referred to as “Public Access Treads”). These treads require 2 “stringer” tubes per side but would not require an additional transom under the leading edge.
• Note: Tube & fitting scaffold staircases with treads that have 2 lugs per side require the stringers to be set at a defined angle to ensure the treads are level and will require a bespoke design.