Full-scale testing of low-rise, residential buildings with realistic wind loads

Wind engineering research is undergoing some dramatic changes with novel, large-scale and full-scale research facilities being built around the world to deal with the rising economic losses associated with natural disasters caused by severe wind storms. The paper discusses some of the emerging test methods and challenges being addressed by such facilities with a particular focus on full-scale testing at the “Three Little Pigs” Project at the University of Western Ontario and at the Insurance Institute for Business and Home Safety's new research facility in South Carolina. The challenges center around both the nature of wind loading and the response of low-rise, residential structures. Residential construction is typically built using prescriptive building codes, and is characterized by the use of materials with large variability and structures with significant static indeterminacy making load paths and overall performance difficult to ascertain. These new facilities are able to deal with these issues by bringing realistic wind loads to full-scale structures, enabling the development of improved building code requirements, product safety standards and loss models. Recent research on the performance of toe-nailed, roof-to-wall connections in wood-frame houses serves as a case study to illustrate these points.

► Emerging full-scale facilities to determine wind effects on residential structures are examined.
► There are two main approaches: pressure loading devices and full-scale wind tunnels.
► Strengths and limitations of the two approaches are examined.
► A case study of toe-nailed, roof-to-wall connections is presented.