Spiral Tower Staircase
The Spiral Tower Staircase is a robust, modular access solution designed specifically for the groundworks and shoring industry, offering fast, safe access to deep excavations, trenches, and below-ground work zones. Fully compliant with BS-EN 12811, it provides a superior alternative to ladders and makeshift access routes, reducing trip and fall hazards while improving the movement of operatives, tools, and materials in confined or uneven terrain.
Spiral Tower Staircase offers a modular, heavy-duty stair system specifically designed to provide safe access into and out of excavation sites, utility trenches, and other confined ground-level environments. Fully compliant with BS-EN 12811, it supports operatives, tools, and materials moving vertically without the risks of unstable ladders or improvised walkways.
Engineered for rapid deployment, the staircase can be quickly assembled and adjusted to suit excavation depth and layout. Its crane-liftable design allows for easy repositioning as the site evolves, making it ideal for projects involving sheet piling, trench boxes, or cofferdams, where reliable access is critical for safety and efficiency.
Key Features & Benefits
- BS-EN 12811 certified for use in temporary works, shoring, and groundworks environments.
- Spiral structure fits deep, narrow excavations with minimal footprint.
- Fast installation and breakdown-ideal for phased trenching or multi-zone excavations.
- Grippy stair surface with enclosed handrails prevents slips, even in wet conditions.
- Enables two-way operative movement, improving workflow and site safety.
Product Information
This access tower is frequently used in deep trenching operations, pipe laying, or subterranean build phases where space is limited and fall risk is high. It outperforms ladders in every key metric: stability, compliance, and operative confidence.
Module | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 |
Height (mm) | 2480 | 4760 | 7040 | 9320 | 11600 | 13880 | 16160 | 18440 |
Width (mm) | 1600 | 1600 | 1600 | 1600 | 1600 | 1600 | 1600 | 1600 |
Weight (kg) | 307 | 534 | 761 | 987 | 1214 | 1441 | 1667 | 1894 |
Popular Uses & Applications
Ideal for groundworks contractors, utility providers, and civils firms operating in deep shoring environments. Used extensively where quick site entry is needed without compromising compliance or causing ground disturbance.
Also valuable during reinstatement works or inspection projects where vertical access must be established quickly and securely for rotating site teams.
Alternative Products
If less vertical access is required, consider the Temporary Trench Stairway. For level trench bridging, the Temporary Trench Bridge offers horizontal pedestrian access.
HERMEQ stocks a wide range of equipment for Working at Height including Edge Protection Systems, Fall Arrest Systems, and Harnesses & Lanyards conforming to all required safety specifications and regulations.
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