SWUK Steel Decking are nationwide stockists and suppliers of ComFlor 60; available in 0.9mm, 1.0mm and 1.2mm gauge.
ComFlor® 60 has been much copied but never bettered, as the original new generation round shouldered trapezoidal combined 60mm profile. This design is exceptionally resistant to compressive buckling resulting in superior span capability compared to traditional decks.
- Long span and versatile: The combined trapezoidal and re-entrant profile provides the benefits of easy service hanging, good shear interaction and long spans.
- Low concrete and steel usage: A low volume of concrete is needed reducing weight and steel requirement.
- Central stud placement: Shear studs are placed centrally in the troughs to ensure beneficial placement.
- Closed ends: Applied in the factory to close off the profile, particularly suitable for pre-studded beams.
- Better for Health and Safety: The profile is 600mm cover as recommended by Health and Safety guidelines to allow a lighter weight sheet which reduces strain on installation operatives.
Load span tables
Our Load Span tables are designed to optimise the span in the construction stage, with the minimum amount of anti-crack reinforcement required by the relevant design code, while also considering the minimum requirements for the various imposed loading and fire resistance periods.
For more information on our ComFlor® 60 Load Span parameters see our Downloads tab.
ComFlor® 60 Composite slab – volume and weight (EC values)
| Weight of concrete (kN/m2) | |||||
| Slab depth (mm) | Concrete volume (m3/m2) | Normal weight concrete | Lightweight concrete | ||
| Wet | Dry | Wet | Dry | ||
| 110 | 0.078 | – | – | 1.57 | 1.49 |
| 120 | 0.088 | 2.21 | 2.12 | 1.77 | 1.68 |
| 130 | 0.098 | 2.46 | 2.36 | 1.97 | 1.87 |
| 140 | 0.108 | 2.71 | 2.60 | 2.17 | 2.06 |
| 150 | 0.118 | 2.96 | 2.84 | 2.37 | 2.25 |
| 160 | 0.128 | 3.21 | 3.08 | 2.57 | 2.44 |
| 170 | 0.138 | 3.46 | 3.32 | 2.77 | 2.63 |
| 180 | 0.148 | 3.71 | 3.56 | 2.97 | 2.82 |
| 190 | 0.158 | 3.96 | 3.80 | 3.17 | 3.01 |
| 200 | 0.168 | 4.21 | 4.04 | 3.37 | 3.20 |
| 210 | 0.178 | 4.46 | 4.28 | 3.57 | 3.39 |
| 220 | 0.188 | 4.71 | 4.52 | 3.77 | 3.58 |
| 250 | 0.218 | 5.46 | 5.24 | 4.37 | 4.15 |
Notes
1. Deck and beam deflection (ie, ponding) is not included in the table.
2. Deck and mesh weight is not included in the weight of concrete figures.
3. Eurocode density of concrete is taken as:
Normal weight (wet) 25 kN/m3
Normal weight (dry) 24 kN/m3
Lightweight (wet) 20 kN/m3
Lightweight (dry) 19 kN/m3
ComFlor® 60 (S350) Section properties (per metre width)
| Nominal thickness (mm) | Design thickness (mm) | Cross section area (mm2/m) | Profile weight (kN/m2) | Height to neutral axis (mm) | Moment of inertia (cm4/m) | Ultimate moment capacity (kNm/m) | ||
| Sagging | Hogging | Sagging | Hogging | |||||
| 0.90 | 0.86 | 1276 | 0.10 | 33.70 | 92.77 | 86.13 | 9.30 | 7.50 |
| 1.00 | 0.96 | 1424 | 0.11 | 33.75 | 106.15 | 97.95 | 11.27 | 9.36 |
| 1.20 | 1.16 | 1721 | 0.14 | 33.85 | 132.91 | 121.60 | 15.21 | 13.07 |
Deck material
Metallic coated steel to BS EN 10346 S350GD+Z275, with guaranteed minimum proof strength of 350N/mm2 and metallic coated with total mass of between 140g/m2 and 310 g/m2 depending on your procurement option. This is sufficient for internal floors in a non-aggressive environment, which satisfies the requirement in Clause 4.2 BS EN 1994-1-1 – the exposed surfaces of the steel decking shall be adequately protected to resist the particular atmospheric conditions. A zinc coating, if specified, should conform to the requirements of BS EN 10346. The specification may be varied, depending on service conditions.
Anti-crack mesh
As a minimum requirement where the control of crack width is of no interest, BS EN 1994-1-1, 9.8.1(2) recommends that, where continuous slabs are designed as simply-supported in accordance with BS EN 1994-1-1, 9.4.2(5), the cross-sectional area of the anti-crack reinforcement above the ribs should be not less than 0.2% of the cross-sectional area of the concrete above the ribs for un-propped construction, and 0.4% of this cross-sectional area for propped construction. The mesh specified in the quick reference Eurocode tables, complies with this clause.
Where forklift truck (or other similar concentrated loading) is expected, 0.5% minimum percentage reinforcement should be used over the supports and the previous stated percentages elsewhere to control cracking. For further information refer to SCI AD150.
In accordance with Steel Construction Institute (SCI) P300 ‘Composite Slabs and Beams Using Steel Decking: Best Practice for Design and Construction, a nominal cover of 25mm is stated for an exposure level XC1, for all concrete cylinder strengths for both normal (C25/30 to C40/50) and lightweight concrete (LC25/28 to LC32/35). This nominal cover of 25mm is the minimum cover of 15mm plus a fixing tolerance of 10mm.
Supporting beam width
For all ComFlor® 46 load/span tables, the width of the support beam used is assumed to be 152mm.
Fire design
The capacity of a composite slab with nominal anti-crack mesh in fire is calculated in accordance with Steel Construction Institute NCCI PN005 ‘Fire resistance design of composite slab’. Two fire-design methods can be used in the ComFlor® 9 software, namely ‘Mesh and Deck Fire Method’ or ‘Bar Fire Method’. For further details of the performance of composite slabs with nominal anti-crack mesh in fire, please contact the technical team.
Design support
The Technical Department at Tata Steel offers a comprehensive advisory service on design of composite flooring, which is available to all specifiers and users. Should queries arise which are not covered by this literature or by the ComFlor® 9 software, please contact us.
For full technical information download our ComFlor® manual
Finishes
Standard Galvanised
Our whole range comes with Z275 standard galvanising as standard – this means that the steel has been coated with a layer of zinc weighing 275 g/m² on both sides of the steel (the total mass of zinc). This is applied by hot-dip galvanizing, where the steel is dipped into molten zinc to form a durable and protective layer.
MagiZinc® 140
MZ140 products deliver a lower whole life reduction in coating CO2 when compared with Z275 galvanised coating. The coating process for our MZ products requires fewer resources but delivers improved product performance.
MagiZinc® 310
MZ310 products deliver a lower whole life reduction in coating CO2 when compared with Z275 galvanised coating. The coating process for our MZ products requires fewer resources but delivers improved product performance. This is a premium product delivering further enhanced durability over the whole life of your project.
FD+
Our ComFlor® FD+ composite steel floor decking with Colorcoat Prisma® is a solution that has been developed and optimised for floor deck applications. The Colorcoat Prisma® finish provides a highly durable solution for onerous environments backed by our multi decade guarantee. Available in ComFlor® 51+, 60 and 80 variants for use in up to C5 environments and coastal applications and backed by a multi-decade guarantee.
| Profile | Gauges available (mm) | Steel grade N/mm2 | Finishes | ||||||
| 0.7 | 0.9 | 1.0 | 1.2 | 1.25 | MZ140 | MZ310 | FD+ | ||
| ComFlor® 46 | – | ✔ | – | ✔ | – | 280 | ✔ | ✔ | – |
| ComFlor® 51+ | – | ✔ | ✔ | ✔ | – | 350 | ✔ | ✔ | ✔ |
| ComFlor® 60 | – | ✔ | ✔ | ✔ | – | 350 | ✔ | ✔ | ✔ |
| ComFlor® 60 Closed Ends | – | ✔ | ✔ | ✔ | – | 350 | ✔ | ✔ | – |
| ComFlor® 80 | – | ✔ | ✔ | ✔ | – | 350 | ✔ | ✔ | ✔ |
| ComFlor® 80 Closed Ends | – | ✔ | ✔ | ✔ | – | 350 | ✔ | ✔ | – |
| ComFlor® 100 | – | ✔ | – | ✔ | – | 280 | ✔ | ✔ | – |
| ComFlor® 210 | – | – | ✔ | – | ✔ | 350 | ✔ | ✔ | – |
| ComFlor® 225 | – | – | – | – | ✔ | 350 | ✔ | ✔ | – |
For full technical information download our ComFlor® manual
Responsible low carbon options
BES 6001 Responsible Sourcing
Building Systems UK operations, supply chain and products are certified under the BRE Responsible Sourcing Framework Specification BES 6001. We are able to help our customers to operate more sustainably by providing guidance on the specification of our products and the impact on obtaining credits under building certification schemes such as BREEAM.
Find out more about responsible sourcing
Environmental Product Declarations (EPDs)
Building Systems UK’s vision is to ‘enable the creation of sustainable spaces where we live work and play’. As a manufacturer we have a duty to operate responsibly and in a transparent way. Building Systems UK are one of the most transparent and reported construction product manufacturers in the UK, with a unique offering of project specific and bespoke Environmental Product Declarations. This is enabled by our unique operatorship of an Environmental Product Declaration Programme.
Find out more about EPDs and request your project specific EPD
Optemis® Carbon Lite
Optemis Carbon Lite is a fully certified in-setting scheme verified by leading assurance organisation DNV. Our continued commitment to decarbonisation means reductions in CO2 emissions can now be passed on to our customers, enabling them to achieve immediate Scope 3 emission savings.
Revenues generated from the sale of Optemis Carbon Lite certificates are used to fund additional projects, generating further CO2 savings to be verified by DNV and speeding up our decarbonisation efforts.
