Structural Steel Truss vs. Post-Tensioned Concrete Scheme Comparison for a Column-Free Theatre

This solution provides a comparative analysis of two structural schemes for a theatre: a structural steel system featuring 30m span roof trusses with ties, and a reinforced concrete system utilizing 20m post-tensioned (PT) beams. It addresses critical constraints including city-centre site logistics, buoyancy requirements for the theatre, and vibration control for dance studios.

Key engineering tasks include Eurocode-based design of braced bays, column buckling checks, and detailed deflection analysis for Macalloy tension bars. The solution covers wind loading, pile design, and secant pile foundations. Deliverables include schematic plans, elevations, and detailed sections (A-A, B-B, C-C) illustrating the structural arrangement, lateral stability, and foundation interfaces.