Stair Stringer-12 Step Concrete-In Hot-Dip Galvanised for a Pair (2 Pieces)
Pair of stair stringers ready for concrete-in installation, hot-dip galvanised for an outdoor-ready finish. Each stringer is sized to support up to 12 steps with a rise of 175mm and a going of 250mm, suitable for residential, office, or commercial applications when paired with step treads.
Designed for use with aluminium or timber treads, these stringers can span up to 1200mm per pair, with a clear span of up to 17 steps when installed correctly. For wider tread widths, a third central stringer is recommended. The standard treads are 50mm, which achieves a maximum tread gap of 125mm.
Sold as a pair and available in three footing configurations: In-Ground, Bolt-On-Concrete, and Landing To Landing. Includes 75mm x 50mm x 2.5mm RHS with 14mm bolt holes and 8mm slots for treads (11mm x 18mm).
Key specifications
- Rise: 175mm
- Going: 250mm
- Treads: 3 (standard 50mm)
- Finish: Hot-Dip Galvanised
- RHS: 75mm × 50mm × 2.5mm
- Bolt Hole: 14mm
- Treads Bolt Hole: 8mm / Slots: 11mm × 18mm
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