What is MagiZinc®?

MagiZinc® is an innovative replacement for conventional galvanised steels. It provides superior corrosion protection even in harsh environments. MagiZinc® is an innovative replacement for conventional galvanised steels. It provides superior corrosion protection even in harsh environments.

A product that performs...

MagiZinc® provides superior protection, extending product life and offering excellent formability and weldability. It is a hot-dip zinc coating alloyed with magnesium and aluminum. A chromium-free passivating agent makes MagiZinc® compatible with common paint.

ComFlor® MZ - Our ComFlor® composite metal floor decking with a 140g/m² MagiZinc® coating weight.

ComFlor® MZ+  -  Our ComFlor® composite metal floor decking with a 310g/m² MagiZinc® coating weight. 

Why use MagiZinc® on our ComFlor® products?

The testing work undertaken on our roofing and floor decking products with the MagiZinc® coating shows an improved product performance over our standard galvanised coating.

Our ComFlor® MZ and MZ+ products have a lower whole life carbon performance when compared with standard Z275 galvanised coating. Our ComFlor® MZ products have lower coating embodied carbon when compared with standard Z275 galvanised coating.

We have built up a significant amount of test data on our Magizinc® products which provides evidence for improved product performance through the life of your project. ​

Our ComFlor® MZ products deliver a 37% 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. ​Our ComFlor® MZ+ is a premium product delivering enhanced durability over the whole life of your project. Our UK supply chain reduces risk and increases security of supply. Tata Steel has over 60 years experience of galvanising and coating steel.​

• Better on-site cost control

  With non crushed more attention is needed to butt up the joints to achieve a relative water tight joint to prevent concrete loss, clearly with closed ends, no attention is needed to maintain tight joints, hence less time needed resulting is less installation time and cost.

• Factory controlled stud-welding

  Crushed ends can sit on the bam flange edges with a ‘gap’ between both sheet ends. This allows beams to be studded in the factory so no hot work on site with conventional on-site welding.

• No filler blocks or end caps required

  Crushed ends act as end caps to contain the concrete.

• Allows pre-galvanised or fully painted beams

  Beams can be ‘pre-site’ factory stud welded, and then be sent for galvanising/painting before arriving on site. Conventional open end profiles that are butted together are ‘through deck’ stud welded require the beams to be non-galvanised/painted prior to stud welding.

• Enhanced acoustic and fire performance

  With closed ends, you now have a solid block of concrete over the beam. With conventional open butted end deck would require trough gaps over the beam, the use of closed ends provide no gap.

• On-site hot work reduced or eliminated
• Closed ends control concrete leakage

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

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ComFlor® 80 Composite slab - volume and weight (EC values)

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

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

ComFlor® 80 Closed Ends Section properties (per metre width)

Design notes:

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® 80 Closed Ends 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
Building Systems UK's Technical Department offers a comprehensive advisory service on design of composite flooring, which is available to all specifiers and users.

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

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® 80 Load Span parameters see our product downloads below.

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

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.

Vibration
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.

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 CO₂ savings 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

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.

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

Downloads

We offer a range of face to face and online CPDs aimed at Engineers and Architects

These free seminars can be booked at any time between 9am and 5pm. Our online webinars can all be delivered via Skype for Business and Teams, but we can consider other platforms if this will not work for your practice.

Below outline the CPDs we have available - Book yours today

• Decarbonising your structural hollow section designs
• Essentials of Structural Hollow Sections
• Welded Joints in Tubular Steelwork - Eurocode 3 Part 1-8
• Concrete Filled Hollow Sections - Composite Design – Eurocode 4
• Composite Floor Deck in Construction
• Structural Roof Deck in Construction
• Specifying metal clad envelope systems in accordance with ADB2 of the building regulations and the value of large scale system testing
• RIBA 2030 climate challenge: How steel building envelope solutions contribute
• Pre-finished steel standing seam systems for roof & wall cladding
• CDM regulations 2015 and their impact on steel building envelope specification.
• Steel building envelope systems for non-domestic buildings
• Steel for roof and wall cladding

Book your CPD today