4D Workshop is a progressive structural engineering consultancy which focuses the collective capability, experience and outcome-driven approach of directors David Doolan and Rob DiBlasi, who began their professional careers together in the early nineties and have led the successful delivery of many significant projects over the past 20 years. 4D Workshop offers complete, high-quality structural engineering services, delivered with a comprehensive understanding of design, procurement, delivery and commercial considerations critical to successful overall project outcomes.