TR220 Floor Deck
TR220 Floor deck diagram

Description

 The additive floor TR220 combines high strength of the 220mm deep steel deck profile with the performance of a ribbed reinforced concrete slab to provide a long span floor solution. The use of TR220 installed to bottom flanges provides a slim floor construction to reduce the structural zone without the need for intermediate supports. 

Benefits

• Un-propped spans up to 6m

•Lightweight compared to other long-span flooring solutions

• Reduces structural floor zone, utilising slab depth within beam web

Gauges

• 1.13mm

• 1.25mm 

Specification

• 750mm cover width

• 220mm deep 

Steel Grade

• S350

TR220 Floor deck

Finishes

• Galvanised (Z275)

• HD (ZM310)

• Crushed Ends Option

• Plastisol (PF) 

Profile Properties

Nominal
Thickness mm
Design Thickness
(bare steel) mm
Depth of Profile
mm
Weight
kg/m²
Weight
kN/m²
Height of Neutral axis mmArea of Steel
mm²/m
Moment of Inertia
cm⁴/m
1.131.0922014.80.15159.916811374.2
1.251.2122016.40.16159.918661525.5

Section properties are calculated assisted by testing in accordance with Eurocode 3. 

Fire Insulation Thickness

Minimum Insulation Thickness (x) of Concrete (mm) 

Fire RatingNWCLWC
1 Hour
6080
1.5 Hours90100
2 Hours120120
3 HoursN/AN/A
4 HoursN/AN/A

The image and table above details the minimum insulation thickness required to suit fire design criteria in accordance with BS EN 1994-1-2. 

TR80+ Floor deck

Concrete Volume and Weight

Slab Depth
mm
Volume of Concrete
m³/m²
Weight of Concrete (Normal Weight)
Wet (kN/m²)
Weight of Concrete (Normal Weight)
Dry (kN/m²)
Weight of Concrete (Lightweight)
Wet (kN/m²)
Weight of Concrete (Lightweight)
Dry (kN/m²)
3000.1173.042.932.462.34
3500.1674.344.183.513.34
4000.2175.645.434.564.34

Deflection – This table is based on concrete poured to a constant thickness and does not take account for deflection of the decking or supporting beams (as a guide, to account for the deflection of the decking, a concrete volume of span/250 should be added to the figures indicated). Concrete Weight – These tables indicate concrete and reinforcement weight only, they do not include the weight of the deck. Concrete weights are based on the concrete densities specified in BS EN 1991-1-1 as follows: Normal Weight Concrete – 26kN/m. (wet) and 25 kN/m. (dry), Lightweight Concrete – 21kN/m. (wet) and 20 kN/m. (dry).

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