Steel Decking Demystified: Choosing Between SteelDECK 52, 76 & 102 for Concrete Slabs and Structural Floors

What Is Steel Decking and Why It Matters

Steel decking sheets act as permanent formwork and composite reinforcement during slab casting. Once the concrete sets, the deck:

• • Bears live loads as part of the slab structure

• • Reduces the need for scaffolding and shuttering

• • Speeds up construction by acting as an all-in-one slab solution

It’s a go-to material in commercial complexes, industrial buildings, infrastructure projects, and prefabricated construction.

Common Applications of SteelDECK Sheets

• • Composite RCC Floor Slabs

• • Mezzanine Floors

• • Roof Decking

• • Flyovers and Bridge Formwork

• • Industrial Sheds and Logistics Centers

All SteelDECK profiles from Geometric Steels are engineered for high strength-to-weight ratio, making them ideal for both light and heavy structural applications.

Profile Comparison: SteelDECK 52 vs 76 vs 102

Here’s a breakdown of how the three profiles compare in terms of structural properties, span potential, and use cases:

SteelDECK 52 – Compact, Cost-Effective & Quick

Crest Height: 52 mm
Width: ~1030 mm
Best For:

• • Light-duty floors

• • Internal mezzanines

• • Commercial interiors

• • Shorter beam spacing (up to 2.5 meters)

Load Handling (for 1.0mm sheet, 345 MPa):

• • At 2.0m span: ~1094 kg/m²

• • At 2.4m span: ~759 kg/m²

Why Choose SteelDECK 52:

• • Ideal when slab spans are short

• • Minimal concrete fill needed

• • Reduces project cost and slab thickness

SteelDECK 76 – The All-Rounder for Industrial Projects

Crest Height: 76 mm
Width: ~940 mm
Best For:

• • Industrial slabs

• • RCC roofing

• • Commercial structures

• • Spans of 2.5m to 3.5m

Load Handling (for 1.0mm sheet, 345 MPa):

• • At 3.0m span: ~888 kg/m²

• • At 2.8m span: ~1019 kg/m²

• • At 2.4m span: ~1387 kg/m²

Why Choose SteelDECK 76:

• • Strikes a balance between concrete volume and structural strength

• • Compatible with most commercial and industrial projects

• • Preferred profile for slab spans around 3 meters

SteelDECK 102 – Heavy-Duty & Long-Span Performer

Crest Height: 102 mm
Width: ~726.9 mm
Best For:

• • Long-span slabs (up to 4.5 meters)

• • Flyovers and bridges

• • High-load industrial floors

• • Reducing intermediate beam usage

Load Handling (for 1.0mm sheet, 345 MPa):

• • At 3.2m span: ~1021 kg/m²

• • At 2.8m span: ~1333 kg/m²

• • At 2.4m span: ~1815 kg/m²

• • At 2.0m span: ~2614 kg/m²

Why Choose SteelDECK 102:

• • Maximizes clear span

• • Withstands heavy live loads

• • Saves on reinforcement steel and beam count

Choosing the Right SteelDECK – Key Considerations

When selecting the ideal steel deck profile, always evaluate:

• • Span length between beams or supports

• • Type of load (live, dead, point load)

• • Concrete thickness and slab type

• • Project type: commercial vs infrastructure

• • Fire rating, deflection limits, and local codes

All SteelDECK profiles are compatible with composite slab systems and offer excellent fire resistance, minimal deflection, and long-term structural integrity when designed correctly.

Summary Table: At a Glance

Why Geometric Steels?

Since 2006, Geometric Steels has been a trusted name in custom steel roll forming. Our decking sheets are:

• • Manufactured at our Kurkumbh MIDC facility using precision roll-forming lines

• • Available in custom lengths, gauges, and finishes

• • Backed by complete technical guidance and engineering support

• • Delivered fast to meet urgent project timelines

Need Help With Structural Design?

We’ll help you analyze span, load, and material thickness based on your project drawings.

• roof@geometricsteels.com

• +91 8550995556

• steeldeckingsheets.com

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