Product: Hot Rolled Jumbo H Beam S355JR
Quantity: 350 MT
Location: Singapore
Changi Airport Terminal 5 is one of Asia’s most ambitious aviation infrastructure developments and a cornerstone of Singapore’s long-term air hub expansion strategy. Scheduled for completion in the mid-2030s, this mega-terminal sets new global benchmarks for structural resilience and operational safety. As a strategic structural steel partner for global mega-infrastructure, CUMIC supplied high-performance S355JR Jumbo sections to anchor the terminal’s critical underground foundation systems.
Terminal 5 features a sophisticated architectural layout, large-span functional spaces, and multi-level underground systems. This complexity required structural solutions capable of handling:
Substantial vertical loads from the massive superstructure.
Intense lateral earth pressure generated by deep-stage excavation.
Hydrostatic groundwater forces unique to the coastal site.
Stringent deformation tolerances required for long-term structural health.
At this scale, standard S355 H-beams reached their limit. The project required jumbo sections with exceptional axial capacity and stiffness, while allowing engineers greater flexibility in load distribution and structural layout optimization.
Jumbo H-beams are ultra-heavy, hot-rolled profiles engineered to sustain immense vertical loads and provide the critical structural integrity required for skyscrapers, long-span bridges, and mega-terminal projects. The selection of the 1016 × 406 × 883 kg/m series provided a decisive performance leap over standard S355 sections:
Enhanced Load Capacity: Delivering 4–10 times the strength of standard S355 H-beams, CUMIC sections allow for a radical reduction in member density, significantly optimizing the foundation footprint and total steel tonnage.
Manufacturing Efficiency：As monolithic hot-rolled profiles, these sections eliminate the extensive longitudinal welding required for built-up members. This mitigates the risk of thermal distortion and significantly reduces fabrication labor costs.
Optimized Z-Direction Performance: Our optimized metallurgy is specifically designed to prevent lamellar tearing in ultra-thick flanges (>40 mm). This ensures 100% NDT (Non-Destructive Testing) compliance and prevents structural failure in highly restrained joints.
Structural Stability: The 1,016 mm web height maximizes bending stiffness and buckling resistance, simplifying on-site assembly and securing the project's critical path.
As a global integrated steel solutions provider, CUMIC specializes in empowering the world’s most complex infrastructure and mega-projects. From heavy-duty plates and sheet piles to structural sections, we deliver high-performance material solutions and precision pre-fabrication services engineered to exceed international standards and stringent local building certifications. Partner with CUMIC to secure the material choice expertise, supply chain reliability, and global compliance necessary for your project’s structural success.
