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ShownGalvanized floor decking: deep trapezoidal profile, 0.8 – 1.5 mm, Z120 – Z275 zinc, cut to span up to 12 m

Steel Coils & Sheets · Structural Sheet

Galvanized Decking Sheets

Deep-profile galvanized composite floor decking for steel-framed floors, mezzanines and roof decks.

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Category
Steel Coils & Sheets
Group
Structural Sheet
Market
United Arab Emirates
Supply
Quotation per enquiry

Product overview

Galvanized Decking Sheets: overview and uses

Galvanized decking sheet is a deep trapezoidal, embossed steel profile that spans between beams and acts as permanent formwork and tensile reinforcement for composite concrete floor slabs in steel-framed buildings and mezzanines.

Composite decking replaces timber shuttering: the sheet is laid across the steel beams, shear studs are welded through it, and the concrete is poured directly on top. The embossed ribs lock the slab and the sheet together so they act as one composite floor.

OGB supplies galvanized decking in the common profile depths and gauges used for mezzanines, car parks and multi-storey steel buildings. Profile, gauge and sheet length are confirmed against the structural drawing.

Characteristics

Why Decking Sheets works in the UAE

Formwork plus reinforcement

One sheet replaces shuttering and much of the bottom reinforcement.

Cut to span

Supplied in lengths to suit the beam spacing, up to 12 m.

Galvanized Z120 – Z275

Protected during construction and in service as the slab soffit.

Installation guide

How a composite floor deck is installed

The usual sequence for a galvanized composite floor deck on a steel frame: the sheets are laid across the beams as permanent formwork, fixed, fitted with shear studs and edge trims, then reinforced and concreted so steel and slab act together.

Materials

  • Galvanized decking sheets cut to span
  • Edge trims and closure flashings
  • Shear studs or fixings
  • Anti-crack mesh and bars to the engineer’s design
  • Ready-mix concrete
  1. Step 01

    Check the frame

    Confirm the steel beams are level, at the drawing centres, and that the decking profile, gauge and span suit the structural design and load tables.

  2. Step 02

    Lay the sheets

    Place the sheets across the beams with the ribs running in the span direction, side laps engaged and ends bearing on the beams.

  3. Step 03

    Fix and stud

    Fix the sheets to the beams and weld or fire the shear studs through the deck as specified, so the slab and beams act together.

  4. Step 04

    Fit trims

    Install edge trims and closures around the perimeter and openings so the wet concrete is contained.

  5. Step 05

    Reinforce

    Place the anti-crack mesh and any extra bars over supports on spacers, as the structural engineer specifies. Prop the deck where the span needs it.

  6. Step 06

    Pour

    Pour and level the concrete to the design slab thickness. The embossed ribs bond with the cured slab, and the deck stays in place as the soffit.

In the field

Decking Sheets on site

Decking is normally supplied bare galvanized (silver), not painted, because it becomes part of the concrete slab

Technical data

Specifications

Share your required size, quantity and finish in the enquiry form and OGB confirms availability in writing.

Enquire about Decking Sheets
Galvanized Decking Sheets specifications
Thickness range 0.8 mm – 1.5 mm
Zinc coating Z120 – Z275 g/m²
Profile Trapezoidal / re-entrant composite profile with embossments
Cover width 600 mm – 1250 mm depending on profile
Sheet length 2 m – 12 m cut to length
Steel grade Structural quality, e.g. S280GD / S350GD (EN 10346) or ASTM A653 SS Gr 40/50
Standards ASTM A653, EN 10346, IS 1079

Available options

  • Edge trims and closure flashings
  • Shear studs and fixings (by others or on request)
  • Profile depth to suit span

Questions

Galvanized Decking Sheets: common questions

What is composite decking and how does it work?

The profiled steel sheet supports the wet concrete during the pour and then bonds with the hardened slab through its embossed ribs and shear studs, so the sheet carries tension while the concrete carries compression. The result is a thinner, lighter floor than a conventional reinforced slab.

What span can decking achieve without propping?

Unpropped spans depend on profile depth, gauge and slab thickness and are given in the manufacturer’s load tables. Typical mezzanine beams are set at 2 m to 3.5 m centres. OGB confirms the available profile and its tables per enquiry.

Does decking still need mesh reinforcement?

A light anti-crack mesh is normally placed in the slab, and additional bars may be required over supports or for fire design. The structural engineer specifies the reinforcement.

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