Long-Span Steel Warehouse and Office with Piled Raft Foundations on Quarry Ground

This solution details a steel-framed commercial warehouse and two-storey office featuring long-span trusses (48m) and hollowcore plank flooring. The design addresses significant site constraints, including a former quarry with ground cavities and poor bearing capacity, necessitating a piled raft foundation and permeation grouting.

Technical calculations follow Eurocodes, covering ULS/SLS load run-downs, truss member design (chords and diagonals), column interaction checks, and bored pile capacity in mudstone. Deliverables include a comprehensive structural scheme comparison, schematic roof plans, braced bay elevations, connection details, a phased method statement, and a construction programme.