Fortress Access Chamber

Access Chambers

Fortress Access Chamber

Fortress

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
  • inexpensive
  • 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 Installation

Installation of Cubis’ Fortress

STAKKAbox Fortress

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.

Design

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.

FORTRESS Access Chamber How It Works

Fortress Access Chamber Offers An Efficient solution


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.

➡ See also | Access Covers | Cable Protection | Cable Trough

 

Fortress Corner Section

Materials

HDPE

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.

 

 

 

Available SizesFortress Access Chamber Construction

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.

 

 

Fortress AdaptabilityADaptability

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.

 

 

 

 

 

 

Load RatingCubis Fortress

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.

 

 

 

 

Access Chamber Fortress

Technical Specification

Fortress Size

Weight

Product Code

445 mm x 445 mm 4.5 kg SYFF44-04450445-BK010C000
610 mm x 445 mm 5.9 kg SYFF64-06100445-BK010D000
610 mm x 610 mm 7.2 kg SYFF66-06100610-BK010D000
675 mm x 675 mm 11.0 kg SYFF66-06750675-RF010D000
750 mm x 750 mm 8.7 kg SYFF76-07500750-RF010D000
915 mm x 445 mm 8.1 kg SYFF94-09150445-BK010C000
915 mm x 610 mm 9.5 kg SYFF96-09150610-BK010C000
915 mm x 915 mm 11.7 kg SYFF99-09150915-BK010C000
1220 mm x 445 mm 10.0 kg SYFF14-12200445-RF010D000
1220 mm x 610 mm 11.4 kg SYFF16-12200610-RF010D000
1220 mm x 675 mm 13.2 kg SYFF16-12200675-RF010D000
1220 mm x 750 mm 12.1 kg SYFF17-12200750-RF010D000
1220 mm x 915 mm 13.6 kg SYFF19-12200915-RF010D000
1220 mm x 1220 mm 15.6 kg SYFF11-12201220-RF010D000
1310 mm x 445 mm 9.6 kg SYFF14-13100445-RF010D000
1310 mm x 610 (C) mm 14.6 kg SYFF16-13100610-RF010D000
1310 mm x 610 (F) mm 12.2 kg SYFCC2-13100610-BK010D000
1310 mm x 915 mm 12.7 kg SYFF19-13100915-RF010D000

For additional data sheets contact Thorne & Derrick, or visit Cubis’ technical library here


Thorne & Derrick are also distributors of Filoform duct sealing products.

Protection of Cables Against Water Ingress (Flood), Gas Migration (Explosion) & Fire – see duct sealing systems for further information