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Non-Composite Decking Sheet

Floor Decking Solution Division

Trapezoidal Metal Profile sheets with strong and reliable shear bond performance which is augmented by cross embossing located in the profile. The composite floor profile offers the ultimate in the light weight steel decking which reduced concrete usage to provide a cost effective and alternative floor solution that easy to install.

The floor is constituted by a profiled sheet onto which a layer of concrete is poured. The sheet is bonded to the concrete by means of mouldings on the sheet which stop the concrete from slipping horizontally and detaching vertically. When the concrete is poured and until it has reached an appropriate level of hardening (stage 1), the weights of the concrete, personnel working and equipment used in borne by the sheet alone. Once the concrete has hardened (stage 2) the sheet and the concrete form a unified bond with all the Characteristics of traditional reinforced concrete, where the sheet, after having performed the function of framework, acts as a metal reinforcement. Appropriate crop ends must be provided to absorb the negative moments.

Decking Profile 50 / 235mm

  1. Application
  2. Technical Specification
  3. Load Tables

Reduced Concrete usage : Tensile steel for composite slab construction that cuts down on slab thickness and dead weight of buildings. Providing a more sustainable solution and reducing costs.

No separate formwork required for slab casting.

Reduces construction time.

Technical department at Alfa offers comprahassive advisory of service on design of composite flooring should quiries arise when are not cover by this literature please contact us.

Base Metal

High tensile structural grade steel

Coating Mass 120, 180 & 275 GSM

Coating Standard IS : 277

Yield Strength 240 MPA / 350 MPA / 550 MPA

Premier Coating Minimum 10 Microns

Colour coating Premier 10 Microns Bottom 25 Micron

Available Finish

Cold Rolled (CR)

Pre coated galvanized under side giving durable and attractive appearance and minimum future maintenance. Thickness 0.8mm/1mm/1.2m

Normal thickness! Design thickness Profile weight Area of Steel Height of neutral axis Moment pof Lnertia Moment of carying capacity
Sagging Hogging
mm mm Kn/m mm/m Cm/m KN.m/m KN.m/m KN.m/m
0.8 0.76 0.082 1041 24.69 46.04 4.66 4.55
1.0 0.96 0.103 1302 24.79 57.55 5.80 5071
1.2 1.16 0.124 1562 24.89 69.06 6.94 6.88
Maximum span (double span) (in meters)
Panel Thickness Profile Weight Sectional Area Concrete slab depth above profile
mm kg/m2 cm2 100mm 150mm 200mm 250mm
0.80 5.94 7.57 2.00 1.75 1.55 1.400
1.00 7.43 9.46 2.25 1.95 1.75 1.650
1.20 8.91 11.35 2.50 2.15 1.90 1.750
  1. Application
  2. Technical Specification

Reduced Concrete usage : Tensile steel for composite slab construction that cuts down on slab thickness and dead weight of buildings. Providing a more sustainable solution and reducing costs.

No separate formwork required for slab casting.

Reduces construction time.

Technical department at Alfa offers comprahassive advisory of service on design of composite flooring should quiries arise when are not cover by this literature please contact us.

Base Metal

High tensile structural grade steel

Coating Mass 120, 180 & 275 GSM

Coating Standard IS : 277

Yield Strength 240 MPA / 350 MPA / 550 MPA

Premier Coating Minimum 10 Microns

Colour coating Premier 10 Microns Bottom 25 Micron

Available Finish

Cold Rolled (CR)

Pre coated galvanized under side giving durable and attractive appearance and minimum future maintenance. Thickness 0.8mm/1mm/1.2m

Decking Profile 75 / 305mm

  1. Application
  2. Technical Specification
  3. Load Tables

Reduced Concrete usage : Tensile steel for composite slab construction that cuts down on slab thickness and dead weight of buildings. Providing a more sustainable solution and reducing costs.

No separate formwork required for slab casting.

Reduces construction time.

Technical department at Alfa offers comprahassive advisory of service on design of composite flooring should quiries arise when are not cover by this literature please contact us.

Base Metal

High tensile structural grade steel

Coating Mass 120, 180 & 275 GSM

Coating Standard IS : 277

Yield Strength 240 MPA / 350 MPA / 550 MPA

Premier Coating Minimum 10 Microns

Colour coating Premier 10 Microns Bottom 25 Micron

Available Finish

Cold Rolled (CR)

Pre coated galvanized under side giving durable and attractive appearance and minimum future maintenance. Thickness 0.8mm/1mm/1.2m

Panel Thickness Design Thickness Profile Weight Area of Steel Height of neutral axis Moment pof Lnertia Moment of carying capacity
Sagging Hogging
mm mm kg.m2 cm2 mm cm4 KN.m/m KN.m/m
0.8 0.77 7.66 9.76 37.80 100.90 4.004 3.983
1.0 0.97 9.57 12.19 38.12 126.10 4.993 4.962
1.2 1.17 11.97 15.25 38.28 157.70 6.230 6.179
fy= 25 Kn/cm2
E= 2.00E+08 KN/M2
Maximum span (double span) (in meters)
Panel Thickness Profile Weight Sectional Area Concrete slab depth above profile
mm kg/m2 cm2 100mm 150mm 200mm 250mm
0.80 7.66 9.76 2.90 2.50 2.30 2.000
1.00 9.57 12.19 3.30 2.80 2.50 2.300
1.20 11.97 15.25 3.70 3.20 2.80 2.600

Composite Decking Sheet

In our Composite Decking Sheet the floor is constituted by a profiled Deck sheet made of metal onto which a layer of concrete is poured. The GI decking sheet is attached to the concrete by method for mouldings on the sheet which prevent the cement from slipping on a level plane and disconnecting vertically. At the point when the concrete is spilled and until it has arrived at a proper level of solidifying, the weights of the concrete, staff working and supplies utilized as a part of borne by the sheet alone. When the cement has solidified the sheet and the concrete structure a bound together bond.

Non-Composite Decking Sheet

Permanent Formwork Profile Range

We manufacture profiles which are used as permanent formwork. Permanent formwork remains it situ for the life of the building but, unlike composite flooring profiles, it does not Act as reinforcement in the concrete slab.

The steel decking supports the wet concrete and construction loads.

Temporary propping can be eliminated.

The concrete slab requires full structural bar or mesh reinforcement.

Maximam spam(m)single or double span
Steel thicknessProfile weightConcrete slab debth above profile
mm kN/m 100mm 150mm 200mm 250mm
0.8 0.82 2.90 2.57 2.33 2.15
1.0 0.103 3.23 2.87 2.60 2.40
1.2 0.124 3.54 3.14 2.85 2.63

Mezzanine floors in industrial buildings

We provide mezzanine floors for industrial buildings. Mezzanine floors are a key part to our business enabling to maximize your productive floor space by doubling its capacity. It is an intermediate floor between main floors of a building. These structures are usually free standing and in most cases can be dismantled and relocated. Mezzanines are frequently used in industrial operations such as warehousing, distribution or manufacturing. These facilities have high ceilings, allowing unused space to be utilized within the vertical cube.Industrial mezzanine structures are typically either structural, roll formed, rack-supported, or shelf-supported, allowing high density storage within the mezzanine structure. In industrial buildings it may be a requirement that uninterrupted working spaces are provided over the whole of the ground floor area. In these cases the mezzanine floor structure can be supported directly off the roof main framing members, thereby providing an unobstructed area underneath. Mezzanine floors are lightweight open grid floors.

Shear Connectors

Composite structures consist of two different materials joined together in such a way that the resultant strength of the structure is more than the strength of the two materials added together. Due to this composite structure can make best use of each of the constituent materials. In steel and concrete composite beams, concrete is assumed to take most of the compression load while steel takes all the tension. The two materials in the composite structure need to be firmly held together to make the structure rigid and strong.

In steel and concrete composite beams the two materials are held together by means of headed Shear connectors.

Advantages of Shear Connectors

Easy to use

Economical

Very fast installation as compared to conventional processes

More consistent as the weld parameters are predetermined and programmed in the machine itself.

Minimum human intervention

Through deck welding is also possible where the Headed Shear Connector is welded through a formed galvanized sheet onto a steel beam. Concrete is then poured over the formed sheet and the shear connectors.

Advantages of Composite Structures of Shear Connectors

Reduction in concrete as well as steel.

Greater strength of the structure

Greater speed of construction

Lesser floor sections.