Multi-Storey Steel & RC Frame Design Over Tramway with Outrigger Trusses & Pad Foundations

This solution presents two structural schemes for a multi-storey building situated over an active tramway. Scheme 1 utilizes an RC structure with deep transfer beams and outriggers, while Scheme 2 features a steel frame with composite metal deck slabs, outriggers at specific levels, and plan bracing.

Key challenges addressed include construction over a tramway (requiring crash decks and possession planning), managing adjacent structure stability via sheet piling, and a change of use from office to residential. Engineering checks include wind loading, deflection/vibration limits, and axial/moment capacity for columns and outrigger trusses.

Deliverables include detailed design calculations for primary/secondary beams, outrigger chords, pad foundations, and anchors, alongside schematic plans, sections, and a comprehensive construction method statement.