Straight staircase PERI UP Flex 75

aluminiumbuilding sitetemporary

Overview
The lightweight stair tower for flexible access solutions: aluminium flights of stairs 75 cm wide mounted on the ledgers of the PERI UP modular scaffolding. Configurations include 4-legged towers with alternating or same-direction stair units, serving as safe access to work areas and construction sites. The system is designed for a service load of 2.00 kN/m².

Main features

• Modular 25 cm grid for precise adaptation and complete bay closure even in tight spaces.
• Short ledgers and small flights allow stairwell solutions inside buildings and in narrow shafts.
• Fast assembly with a minimum number of ledgers and anchors; compatible with standard PERI UP components.
• Integrated stair safety without additional parts (anti-lift, non-slip treads, Gravity Lock for ledgers).

Applications / In action

• Easily adapted to access building openings using brackets and short flights regardless of storey heights.
• Flexible assembly through the 25 cm grid; all bays can be closed even in the smallest spaces.
• Suitable for refurbishment, new construction and industrial sites as temporary or permanent access solution.

Technical specifications

• Scaffold type: Stair tower
• Ramp width: 75 cm
• Floor plans: 1.50 m x 2.50 m | 1.50 m x 3.00 m
• Weight: approx. 85 kg per vertical metre (opposite directions, 2.50 m variant); approx. 115 kg per vertical metre (same direction, 3.00 m variant)
• Permissible load: flights and coverings: 2.0 kN/m²; entire structure up to 66 m: 2.0 kN/m² over 20 m run length
• Assembly heights: up to 66 m according to standard rules; configurations beyond require individual verification (possible up to 100 m in specific cases)
• Standards: EN 12810 / DIN EN 12810 & 12811; load classes 1–4 (0.75–3.00 kN/m²) and up to 6 (0.75–6.00 kN/m²)
• Other: height adjustments via consoles (0.5 m / 1.0 m) or stair bars (0.2 m); counter-rotating and co-rotating tower options; horizontal ledger can be pre-mounted; Gravity Lock secures ledgers; integrated pad protection; use of standard handles with pressed-in tubular pins
• Compatibility: PERI UP scaffolding kit, VARIOKIT

Downloads

• PERI UP | The modular system for a wide range of scaffolding applications
• PERI UP Access Technology | Access technology for construction sites, industry and public areas
• PERI UP Flex Stair 75 brochure