Composite floor deck

ComFlor® 60

The most successful new generation combined 60mm profile from Building Systems UK (a Tata Steel enterprise).

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
  • Low concrete and steel usage
  • Central stud placement
  • Closed ends
  • Better for Health and Safety

To download the BIM objects for this product please click on the 'Download BIM Objects' tab below.

Request a bespoke product specific EN 15804 Type III EPD to help accrue points under building certification schemes such as LEED and BREEAM.

Tata Steel construction flooring ComFlor 60 non-composite formwork
Antwerp Port House comflor composite floor decking tata steel construction
Tata Steel construction flooring ComFlor 60
Tata Steel construction flooring ComFlor 60
Rugby mill used Trimapanel insulated wall panels
Product specification

EN-Construction-Product-ComFlor 60-default

ComFlor 60
Specification details

EN-Construction-Product-ComFlor 60 | Benefits

  • 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.

If you have any questions or for further information click here to contact us.

Request a product sample

Airios in Veldhoven The Netherlands Tata Steel ComFlor, composite floor deck

EN-Construction-Product-ComFlor 60 | Volume and weight

Volume and weight

ComFlor® 60 Composite slab - volume and weight (EC values)

    Weight of concrete (kN/m2)
Slab depth
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


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

If you have any questions or for further information click here to contact us.

EN-Construction-Product-ComFlor 60 | Section properties and design notes

Section properties and design notes

ComFlor® 60 (S350) Section properties (per metre width)

Nominal thickness
Design thickness (mm) Cross section area (mm2/m) Profile weight (kN/m2) Height to neutral axis (mm) Moment of inertia
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

Design notes:

Deck material
Tata Steel Galvatite®, hot dip zinc coated steel to BS EN 10346 S280GD+Z275, with guaranteed minimum proof strength of 280N/mm2 and zinc coating of total mass 275g/m2 (including both sides). 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.

If you have any questions or for further information click here to contact us.

EN-Construction-Product-ComFlor 60 | Load span tables

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 product downloads below.

If you have any questions or for further information click here to contact us.

EN-Construction-Product-ComFlor with FibreFlor | ComFlor® 9.0.34 software

ComFlor® 9.0.34 software

ComFlor® 9.0.34 Software analyses each of the ComFlor® composite floor decks in construction stage, service stage and for fire resistance, under a wide range of loading configurations.

Design principles are in accordance with the appropriate parts of BS 5950 : Part 4 (1994), Part 6 (1995), Part 8 (1991) For design to the Eurocodes, the design principles are in accordance with EN 1994-1-1 and EN 1994-1-2:Eurocode 4. The design checks performed by the program cover the construction stage, the normal design stage and fire.

The slab may be propped or unpropped during construction and may also span over one or more permanent or temporary supports. In the double span case, the spans may be equal or unequal. At the normal design stage, however, the slab is always assumed to be simply supported between permanent supports. The slab is assumed to span only in the direction of spanning of the decking i.e. two-way spanning floors are not covered.

How to download ComFlor® 9.0.34 Software

1) Download Version 9.0.34 here

2) Install Version 9.0.34

Terms and Conditions of Use



Subject to your acceptance of these Terms and Conditions as set forth on this page, you are hereby granted a non-exclusive, non-transferable right to use this Program for the sole purpose of assisting in the selection or specification of products described in the program. This Program, and all related rights and patents, copyrights, trade secrets and other intellectual property, are and shall remain the sole property of Tata Steel UK Limited ["Tata Steel"] or The Steel Construction Institute ["SCI"] . You agree not to copy, reverse compile or engineer, disassemble, or otherwise use this program, or permit others to do so, other than as specifically authorised in these Terms and Conditions.


The latest version of this program is available via the above Download button.


THIS PROGRAM IS PROVIDED AS IS, WITH NO WARRANTIES, GUARANTEES, REPRESENTATIONS OR CONDITIONS. In no event shall Tata Steel be liable for any direct or indirect, consequential, special, financial or economic losses, damages, costs claims or expenses (including any loss of profits) howsoever arising whether due to negligence or otherwise associated with the use, or inability to use, this Program. Risk in the use of this Program lies solely with the user. Tata Steel standard "Terms and Conditions of Sale" apply to all products sold by Tata Steel.

To download ComFlor® 9.0.34 software for the Middle East only

A version of this software, using customary dimensions for the Middle East market, is available and can be downloaded here.

If you have any questions or for further information click here to contact us.

EN-Construction-Product-ComFlor 60 | Design support

Design support

We maintain a friendly technical help desk which is freely available to all Consulting Engineers, and Contractors to assist with all aspects of ComFlor® composite floor design. The services we offer include:

Design calculations
To assist the specifier, the team are able to provide design calculations, generally dictated by the construction stage condition, the load and span required for service and the fire resistance required for the slab. Our team can also help with specialised design issues such as point loads, requirements for anti crack mesh, openings, etc.

ComFlor® composite floor decks can meet the most stringent vibration applications, such as those required for National Health Service operating theatres.

Software tools
Comprehensive ComFlor® Software is free to download here. The ComFlor® Software provides quick and easy calculations for different building categories, loads, fire performance, spans, vibration, point loads and line loads. Regular updates are sent to all registered users.

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 the composite slab in fire may be calculated using two methods, either ‘Mesh and Deck Fire Method’ (mesh only and no trough bar reinforcement) or ‘Bar Fire Method’ (trough bottom bar reinforcement only with no contribution from the mesh and profile).

Specification service
Our ComFlor® team are able to provide a comprehensive specification guidance to ensure the correct composite floor specification goes into the contract documents.

In-house CPD seminars
Primarily aimed at Engineers and Architects, these free seminars last around 50 minutes, ending with a question & answer session and are delivered by our experienced regional teams. Topics include:

  • Composite floor decking in construction.
  • Structural roof decking in construction.
  • Steel building envelope systems for non-domestic buildings.
  • Factory tour – Insulated Panel Line at Shotton works.

To request a CPD seminar please click here.

If you have any questions or for further information click here to contact us.


Optemis™ Carbon Lite

The launch of Optemis Carbon Lite is an important step in our ongoing decarbonisation journey. It demonstrates our progress and represents a unique solution for customers in the form of a flexible, lower CO2 steel offering.

Optemis Carbon Lite is a fully certified in-setting scheme with COsavings achieved from implemented projects, verified by a 3rd party auditor, DNV, and credited to our CO2 bank.  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 declarations are used to fund additional decarbonisation projects, generating further CO2 savings to be verified by DNV and speeding up our decarbonisation efforts.

By buying Optemis Carbon Lite from Tata Steel UK we, and our customers, will be actively contributing to a reduction in atmospheric CO2.

Find out more about Optemis Carbon Lite

Please accept marketing cookies to reach this.



EN-Construction-Product-ComFlor 60 | Download BIM objects

Download BIM objects

BIM: The way you want it

The DNA Profiler has been designed to allow you to access Tata Steel’s product information (3d parametric objects & data) how you want, when you want, to the level of detail you want, in the format you want.

Product Name Link
ComFlor 60 0.9mm BIM DNA Profiler
ComFlor 60 1.0mm BIM DNA Profiler
ComFlor 60 1.2mm BIM DNA Profiler

In addition to our DNA Profiler, you can access our BIM content at

Product Name Link
ComFlor 60 BIM Object

BIM Object Logo