Trapezoidal 80 (TR80) offers a 600mm cover width
PLAIN Galvanised as standard, or MAGNELIS OR COLOURCOAT FD finishes available on request for aggressive environments.
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Trapezoidal 80 (TR80) offers a 600mm cover width
The TR80 Metal Deck Profile is designed to redefine structural efficiency, combining superior spanning capability with sustainability and safety. Perfect for large-scale commercial spaces, domestic renovations, and architectural projects, it offers the strength and versatility construction professionals demand.
TR80+ is an 80mm deep trapezoidal composite floor deck developed to deliver long unpropped spans while maintaining efficient slab depths and reduced concrete volumes. Originally introduced in 2002, continued research and development has evolved the profile into the TR80+, now widely specified across low to medium rise buildings in the UK.
The deeper 80mm trapezoidal geometry enables excellent unpropped span capacity, reducing the number of secondary beams required and helping to optimise overall structural layouts. Fewer beams means fewer connections, less erection time, and a leaner overall structural scheme.
Watch this short video for a quick explanation!
Unrivalled Spanning Capability
The TR80 achieves spans of up to 4.5 metres unpropped, significantly reducing the need for secondary beams. This creates open, flexible spaces while streamlining structural designs and lowering material costs
Optimised Slab Depth:
Supports slab depths ranging from 140–180mm, providing outstanding load-bearing capacity while minimising concrete usage. Ideal for projects that prioritise strength and efficiency.
Exceptional Fire Resistance:
Achieves fire resistance of up to 120 minutes with appropriate reinforcement, ensuring compliance with stringent safety standards for both commercial and residential projects.
Lightweight and Safe Design:
With a 600mm cover width, the TR80 profile is lightweight and easy to install, promoting safer on-site handling and faster construction times. Its efficient design minimises risks for workers while delivering high performance.
Closed-End Options
Optional closed ends improve fire safety and reduce concrete requirements, making the TR80 a polished solution for projects with exposed soffits. This design feature enhances both the safety and aesthetic appeal of your structure.
Sustainability Built In
Engineered to use less concrete and steel, the TR80 reduces the overall environmental impact of your build. Its lightweight design contributes to lower transportation emissions and supports green building objectives.
Faster Build Times: Long spans and lightweight sheets simplify installation and reduce project timelines.
Cost Savings: Efficient design cuts down on material, labour, and transport costs.
Reliability You Can Trust: Built to meet and exceed safety and performance expectations.
DESIGNED FOR ALL MAJOR
CONSTRUCTION PROJECTS
Features
Profile depth: 80mm
Overall depth to top re-entrant: 92mm
Cover width: 600mm
Available gauges: 0.9mm, 1.0mm, 1.2mm
Steel grades: S350, S450
Section properties are calculated with supporting testing in accordance with Eurocode 3.
Benefits
80mm deep trapezoidal profile, 600mm cover width, for enhanced spanning performance
Reduced concrete volume compared with shallower composite decks at equivalent slab depths
Minimum 140mm slab depth achieves a 1-hour fire rating with normal weight concrete
Excellent unpropped span capability, reducing secondary steelwork and overall steel tonnage
Trough stiffeners positioned for central shear stud placement, minimising site checking
Soffit wedge nut fixings available with load capacity up to 1kN
Acoustic Robust Solution in accordance with Robust Standard Details
TAB-Deck fibre concrete option available as an alternative to fabric mesh reinforcement
CE and UKCA certified, section properties to Eurocode 3
Applications
The TR80 Metal Deck Profile excels in a wide range of projects, including:
- Commercial spaces – warehouses, retail outlets, and office developments
- Domestic properties – extensions, multi-storey renovations, and new builds
- Architectural designs – complex, high-specification builds requiring superior spanning performance and a professional finish.
TECHNICAL SPECIFICATION
Technical
Finishes and Options
Galvanised Z275 — standard coating, suitable for most internal applications
High durability ZM310 — enhanced zinc-magnesium coating for more demanding environments
Plastisol PF — colour-coated option where soffit aesthetics are required
Crushed ends — improves fire compartmentation at beam ends and can remove the need for fire protection to the beam top flange
Low-carbon steel — available for projects with embodied carbon targets
Compliance and Standards
All RMD Profiles metal decking products are manufactured and supplied in compliance with current UK and European structural codes and best practice guidance:
Designed to Eurocode EN 1993-1-3 for cold-formed steel sections
Compliant with BS 5950 Part 6 for profiled sheeting in structural design
Follows good practice guidance from the Steel Construction Institute (SCI P300)
Supplied in accordance with the BCSA Code of Practice for metal decking and stud welding
For more information, please download our datasheet, or click here
ENQUIRY HERE
With quick delivery, bespoke layout drawings, and expert technical support, the TR80 Metal Deck Profile ensures a seamless building process from start to finish.
Contact us today to discover how the TR80 can transform your next project with smarter, safer, and more efficient construction solutions.
9 Gaol Lane, Sudbury, Suffolk, CO10 1JL
Monday - Friday 7.30am - 4.00pm
Saturday - Sunday - CLOSED