Airport steel structures are among the most demanding in the construction industry — combining long spans, complex geometry, stringent fire and safety requirements, and often tight construction programmes around active airfield operations. This guide covers the structural steel components used in airports, applicable standards, and what to look for in an airport steel structure manufacturer.
What Steel Structures Are Found in Airports?
Airport steel structures span a wide range of building types and infrastructure:
- Terminal building frames: Long-span structural steel frames supporting large column-free concourses, check-in halls, and departure lounges — typically spans of 20–60 metres.
- Roof and canopy structures: Glazed or metal-clad roof systems over departure gates, aerobridge connections, and kerbside drop-off areas.
- Aerobridges (passenger boarding bridges): Steel walkway structures connecting terminal gates to aircraft, often requiring bespoke fabrication.
- Maintenance hangars: Wide-span steel portal frames or space frames, often 60–100 metres clear span, for aircraft maintenance.
- Air traffic control towers: Slender steel-framed towers with high wind and vibration resistance requirements.
- Cargo facilities: Multi-storey steel-framed warehouses with heavy floor loads for freight handling equipment.
- Car parks and access structures: Multi-level steel-framed car parks and pedestrian bridges connecting terminals and parking.
Standards for Airport Steel Structures in India
Airport structures in India are designed and fabricated to:
- IS 800:2007 — General structural steel design code.
- IS 875 — Dead, live, and wind load codes.
- IS 1893 — Seismic design.
- NBC 2016 — Fire resistance, evacuation, and structural fire engineering for assembly and transport buildings.
- AAI (Airports Authority of India) technical standards — For AAI-managed airports, structural designs must meet AAI’s technical specifications and be approved by AAI’s engineering division.
- DGCA requirements — For civil aviation infrastructure affecting airside safety.
Key Fabrication Requirements for Airport Steel
Airport terminal fabrication demands higher standards than typical industrial steelwork because of the public nature, scale, and programme sensitivity of these projects:
- Material traceability: Every piece of steel must be traceable to its mill test certificate. Many airport projects require heat number traceability at the connection level.
- Weld quality: Full NDT (UT, RT, or TOFD) on critical connections. The fabricator must hold WPS/PQR qualifications for all weld processes used.
- Surface treatment: Blast cleaning to Sa 2.5 minimum, with intumescent fire protection coating for exposed structural steel in terminal buildings.
- Dimensional accuracy: Complex roof geometry requires 3D fabrication to tight tolerances — typically ±3mm on connection interfaces — to ensure roofing and glazing systems fit without adjustment on site.
- Programme delivery: Airport projects frequently have hard completion deadlines tied to terminal opening or airline slot commitments. Late fabrication is not acceptable and typically triggers heavy contractual penalties.
Airport Steel Structure Manufacturer — Suncorporation
Suncorporation Fabricators & Engineers has experience fabricating and erecting structural steel for airport infrastructure in India, including terminal support structures, hangar frames, and airport access steelwork. Our quality management processes include full material traceability, weld inspection records, NDT certification, and dimensional inspection reports.
We serve airport projects across India from our fabrication facilities, supplying to Hyderabad, Bengaluru, Chennai, Delhi NCR, and other major airport cities. Contact us with your project drawings and specifications for a detailed fabrication quotation.