Infrastructure problem playbook
Securely covering large network access chambers up to F900
Access chambers are critical infrastructure for utilities, telecoms, and transport networks, but covering them securely at F900 load ratings presents several challenges.
This is particularly true of:
- Larger access chambers
- Areas with heavy load requirements
Challenges include:

Heavy load requirements
In some scenarios, bespoke sizes are required for access points. These can be located where very heavy wheel or high point loads from pneumatic and non-pneumatic-tyred vehicles are imposed. This requires durable covers that can withstand up to a 90-tonne test load.

Large clear openings
Adequately covering a large opening can prove costly. Choices typically require premium ductile iron F900 covers. For sizeable access chambers, this can sharply increase project prices.
Secure, durable coverings ensure:
✓ Asset protection
✓ Streamlined maintenance
✓ Regulatory compliance
✓ Reduced replacement / maintenance costs
The solution
As well as our range of composite access covers, Cubis also offers concrete cover slabs ideal for heavy load ratings and large clear openings.
We can design and provide cover slabs up to and including F900 load ratings.
Bespoke features include:

Heavy-duty load capacity
Cubis cover slabs are designed to support heavy loads, including up to F900 load ratings, making them ideal for high-traffic areas
Manufactured to meet BS EN 124, BS EN 1992-1:2008, and BS EN 1991-2:2003 standards for structural integrity and safety

Secure and customisable design
Padlockable sub-security covers can be bolted into the concrete slab to prevent unauthorised access
Ductile iron covers can be installed above the concrete slab or recessed for a flush finish

Optimised for asset accessibility
Apertures can be positioned directly above assets, allowing for easy removal and maintenance
Cover slabs are designed for seamless integration with the Cubis Ultima Connect chamber system
Actionable steps for contractors
- Assess project requirements and identify areas needing secure, heavy-duty access chamber covers
- Specify Cubis cover slabs in project designs to ensure compliance with safety standards
- Work with Cubis to customise aperture placements and locking options for an optimal design
- Book on to our CPD training for support on the proper setup and maintenance of the system
Implementing your solution
By using Cubis cover slabs, specifiers and contractors can ensure safety and integrity in even the most high-demand environments.
Get in touch to chat about how we can support your project.