Urban Elevated Expressway & Flyover Steel Girder Erection
Heavy infrastructure steel supply for multi-lane elevated urban expressways, featuring curved steel tub girders and high-ductility rebar engineered for heavy traffic throughput and high seismic resistance.
Engineering & Strategic Scope
Urban elevated expressways bypass congested city junctions, providing high-speed corridors for commuters and heavy freight. Sarvottam Steel supplied heavy structural steel plates and high-yield rebar packages for major elevated flyovers featuring curved steel-concrete composite bridge decks.
Architectural Expression & Spatial Dynamics
The flyovers feature curved steel tub girders that match tight urban road alignments with minimal visual clutter. The smooth bottom soffit of the steel tub girders provides a clean, modern aesthetic over street level intersections.
Structural Rigor & Critical Environmental Criteria
Tight Horizontal Radius Curvature: Curved bridge spans experience combined bending and high torsional moments, requiring internal K-type diaphragm steel frames.
Heavy Axle Overload Resistance: Indian highway traffic includes heavily overloaded multi-axle freight trucks, requiring fatigue-resistant flange-to-web welded connections.
Restricted Street-Level Launching: Construction over live traffic required pre-fabricated steel girder segments lifted into place using high-capacity mobile cranes during midnight traffic diversions.
Supplied Grades & Application Matrix
| Material / Item | Specification & Standards | Structural Application |
|---|---|---|
| IS 2062 Grade E350 Structural Steel Plates | IS 2062:2011 Grade E350 BO/BR, 12mm to 50mm | Trapezoidal steel tub girders, cross-beams, and pier cap bearing stools |
| Primary Fe 550D High-Ductility TMT Rebars | IS 1786:2008, 12mm to 36mm | Bored pile foundations, pier shafts, and composite bridge deck slabs |
| Class 10.9 High-Strength Friction Grip (HSFG) Fasteners | IS 3757 / IS 4000 Dacromet-coated | Field splicing of curved tub girder sections |
Testing Protocols & MTC Certification
Key Execution Milestones
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Procuring Steel for a High-Rise, Transit Viaduct, or Industrial Facility?
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