Comparative Design of Steel Composite Frame and RC Flat Slab Schemes over an Existing Culvert

This solution compares two structural schemes for an exhibition hall: a steel frame with composite metal decking and trusses, and an RC frame utilizing a deep flat slab system. Key challenges include managing lateral stability in a large atrium, addressing reduced diaphragm action, and designing foundations to avoid disturbing an existing box culvert.

Detailed feasibility calculations are provided for slab reinforcement, secondary and primary beams, truss design, and column axial/buckling loads. The solution includes wind loading, deflection checks (SLS), and raft/piled foundation design. All designs reference Eurocodes (BS EN 1990-1997) and address site-specific constraints like bearing on rock and sleeved piles to mitigate shaft friction.