RWDI

Established in 1972, Rowan Williams Davies & Irwin Inc. (RWDI) is a specialty consulting engineering firm. The RWDI group of companies has offices in Canada, USA, United Kingdom, India, China, Singapore and Hong Kong.

RWDI is a wind engineering and environmental engineering consulting firm and has featured on numerous television documentaries involving wind engineering and related services for the world's tallest skyscrapers and landmark structures. The firm's facilities include five boundary layer wind tunnels, an open channel water flume, MM5 computer models for simulating atmospheric weather conditions and advanced computer modelling capabilities including computational fluid dynamics (CFD). RWDI also has in-house model shops at each of its wind tunnel facilities that use stereolithography technology, integrated data acquisition, storage and processing systems, computer-aided drafting, and a broad base of specialized instrumentation. The firm has conducted wind engineering on projects including the London Millennium Bridge, International Commerce Centre in Hong Kong, Petronas Towers in Malaysia, Freedom Tower on the WTC Site, the second span of the Tacoma Narrows Bridge, Taipei 101 Tower, and the mega-skyscraper Burj Khalifa, currently the world's tallest building. The company also does noise and air quality modelling, monitoring and permitting.