Fortress Access Chamber
Fortress is a range of modular and structural preformed Access Chamber Systems from the STAKKABOX range of access chambers. Suitable for use in carriageway and foot-way environments, the fortress system is moulded in HDPE and possesses excellent strength to weight properties.
How does the Fortress Access Chamber work? The Fortress access chamber is supplied in 150mm deep twinwall rings, allowing contractors to construct access chambers quickly and inexpensively. The Cubis Fortress offers improved build quality, reduced defects and enhanced site safety performance.
Benefits Of Cubis Access Chambers
- improved build quality
- reduced defects
- enhanced site safety
- quick construction
Built by stacking sections to required depth, each part weighs under 25kg, making it suitable for a single person lift under manual handling guidelines.
Fortress ACCess chamber
Features & Benefits
Flexible During Installation
Chambers can be adapted to suit on-site conditions with standard tools to build over existing networks, introduce duct entries for cable entry and for top-section adjustment.
Fast and Easy to Install
Fortress chambers are significantly faster to install than conventional alternatives, with complete installations typically taking up to one hour. This results in reduced costs for the installer. Only the largest sizes in the range require specialist equipment or plant in order to install the chamber.
Flat Pack Option
STAKKAbox™ Fortress can be supplied in flat pack format to make shipping more efficient, with flexible delivery options and installation.
Chambers are built to the required depth (suited to your specific requirements) by adding 150mm sections at a time. Due to the twinwall design, individual sections are light meaning they can be manually lifted. Each access chamber possesses vertical and horizontal ribs, resulting in a product that is strong vertically and on the sidewall. Most installations do not require specialist backfills, reducing installation costs.
Smooth Outer Walls
Gaps in the outer wall will negatively impact the effectiveness of compaction around the chamber. STAKKAbox™ chambers have smooth outer walls and an outer lip which keys into the back-fill.
How The Fortress Access chamber Works
Supplied in 150mm deep twinwall rings, the system provides contractors with a means of constructing access chambers quickly and inexpensively, whilst offering improved build quality, reduced defects and enhanced site safety performance.
Built by stacking sections to required depth, each part weighs under 25kg, making it suitable for a single person to lift under manual handling guidelines.
STAKKAbox™ Fortress is manufactured in nitrogen-foamed High Density Polyethylene (HDPE), of which up to 70% is recycled material.
HDPE possesses excellent strength to weight properties.
A variety of sizes are available to meet client needs.
STAKKAbox™ Fortress chambers are formed by combining four interconnecting component parts to form each ring section. These sections are locked and secured using supplied screws. Using standard component parts allows for greater flexibility in chamber size and clear opening.
Chambers can be adapted to suit on-site conditions with standard tools to overbuild around existing networks, Introduce duct entries for cable entry and for top-section fine adjustment.
Fortress access chambers are suitable for installation in environments rated to D400 under EN124, in accordance with Cubis’ installation guidelines.
Suitable for carriageways of roads and areas open to commercial vehicles.
Thorne & Derrick are also distributors of Filoform duct sealing products.