80 M Street Leads the Mass Timber Revolution

Lauren Wingo, a senior structural engineer with Arup based in their Washington, D.C. office, discusses her work on the renovation of 80 M Street SE — three floors designed by Hickok Cole constructed with cross-laminated timber (CLT) totaling nearly 108,000 square-feet of commercial office and conference space atop an existing seven-story office building. CLT is part of a family of engineered wood products known as mass timber that are far stronger than traditional lumber and used to span distances normally reserved for steel beams. The project is the first of its kind in Washington D.C. to feature a vertical extension constructed using mass timber and the first high-rise overbuild timber structure in North America.

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