Mezzanine floor fabrication is the construction of an intermediate steel floor level within an existing or new industrial building — creating additional usable space for storage, offices, production, or inspection without expanding the building footprint. Steel mezzanine floors are widely used in warehouses, factories, distribution centres, and manufacturing plants across India. This guide covers mezzanine types, components, IS standards, costs, and what to specify.
What Is a Steel Mezzanine Floor?
A steel mezzanine floor is a structural steel platform installed at an intermediate level between the ground floor and the roof of an industrial building. It uses steel columns, primary beams, secondary beams, and a floor deck (chequered plate, grating, or composite deck) to create a second level within the existing building height — typically at 3.5m to 5.0m above ground. Mezzanine floors can be freestanding (independent structure) or tied to the building frame.
Types of Steel Mezzanine Floors
- Freestanding mezzanine: Independent steel structure with its own columns and base plates — does not load the building frame. Most common type for retrofit into existing buildings.
- Building-integrated mezzanine: Tied to the main building columns or walls. More economical on steel but requires coordination with the primary structure design.
- Rack-supported mezzanine: Built on top of heavy-duty pallet racking. Common in logistics warehouses where racking is already installed.
- Multi-tier mezzanine: Two or more levels of intermediate floors within a high-bay building. Used in e-commerce fulfilment centres and high-density warehouses.
- Cantilever mezzanine: Overhangs beyond the supporting columns — used where floor space below must remain clear for vehicles or equipment.
Mezzanine Floor Components
- Columns: Hot-rolled UC or CHS sections. Typically 100×100 UC to 203×203 UC depending on load and height.
- Primary beams: Universal beams (UB) spanning between columns. Sized for the floor load and column spacing.
- Secondary beams (joists): Lighter UB or RHS spanning between primary beams at 1.2–2.0m centres to support the floor deck.
- Floor deck: IS 3502 chequered plate (5–8mm) for heavy loads; open bar grating for maintenance platforms; composite deck (profiled sheet + concrete) for very heavy loads.
- Staircases: Steel staircases with handrails to access the mezzanine level. Designed to IS 800 and NBC 2016 for tread depth, rise, and guarding.
- Handrails and kickplates: Edge protection around the mezzanine perimeter to IS 800 / NBC 2016.
- Base plates and anchor bolts: Connecting mezzanine columns to the floor slab.
Mezzanine Floor Load Capacities
| Application | Typical Floor Load | Floor Deck |
|---|---|---|
| Office / admin area | 3.0–4.0 kN/m² | Chequered plate 5mm or composite |
| Light storage | 5.0–7.5 kN/m² | Chequered plate 6–8mm |
| Pallet storage | 7.5–15.0 kN/m² | Chequered plate 8–10mm or composite deck |
| Heavy manufacturing | 15.0–30.0 kN/m² | Composite deck (profiled sheet + RCC) |
| Maintenance platform | 3.0–5.0 kN/m² | Open bar grating |
Steel Mezzanine Floor Cost in India — 2025 Reference
Mezzanine floor fabrication cost in India typically ranges from:
- Basic freestanding mezzanine (chequered plate deck, light storage): ₹350–₹550 per sq ft including structure, deck, staircase, and handrails.
- Medium-duty mezzanine (pallet storage, heavier beams): ₹550–₹850 per sq ft.
- Heavy-duty / composite deck mezzanine: ₹850–₹1,400 per sq ft.
- Multi-tier mezzanine (2+ levels): Add 70–80% of single-tier cost per additional level.
Costs exclude civil foundation work and are indicative for 2025. Final cost depends on column height, bay spacing, floor load, and finishes.
IS Standards for Mezzanine Floor Fabrication
- IS 800:2007 — Structural steel design for all mezzanine components.
- IS 875 Part 2 — Imposed loads for storage, offices, and industrial floors.
- IS 3502:1994 — Steel chequered plates for floor decking.
- IS 2062 — Structural steel material for columns, beams, and connections.
- NBC 2016 — Staircase dimensions, handrail heights, and means of escape requirements.
Mezzanine Floor Fabrication — Suncorporation
Suncorporation Fabricators & Engineers designs, fabricates, and erects steel mezzanine floors for warehouses, factories, and industrial buildings across India. We supply complete mezzanine packages — structure, chequered plate deck, staircases, and handrails — fabricated to IS 800:2007 in our workshop and erected with our own team.
We serve mezzanine floor projects in Hyderabad, Bengaluru, Chennai, Mumbai, Delhi NCR, and Kolkata. Contact us with your floor plan and load requirements for a detailed mezzanine fabrication quotation.