Comparison of RC and Steel Truss Structural Schemes with Deep Transfer Beams & Secant Pile Foundations

This solution compares a Reinforced Concrete (RC) scheme against a structural steel solution featuring metal deck slabs on trusses and secondary beams. The design incorporates deep RC transfer beams at ground level and secant pile retaining walls for basement containment.

Key engineering challenges addressed include tight urban site logistics, buoyancy, waterproofing, and lateral stability. Detailed calculations cover truss sizing (SHS), primary/secondary beam design, column buckling, raft foundations, and earth pressure (active/passive) for retaining walls. The solution includes wind loading, deflection/vibration serviceability checks, and connection details (moment and pinned). Deliverables comprise schematic floor plans, typical sections, and detailed beam-to-column connection drawings, all referenced to Eurocodes.