All Timber 80 M Street SE Project in Washington DC
The 80 M Street SE project will break new ground as the first commercial office building in Washington DC to feature a vertical extension constructed using
The 80 M Street SE project will break new ground as the first commercial office building in Washington DC to feature a vertical extension constructed using mass timber. The 100,000ft2 addition, designed by Hickok Cole and Arup, will add two full floors to the existing 7-story concrete building, as well as a penthouse level with additional office and amenity spaces, including a rooftop terrace. Arup is providing a full suite of design services for the project, located in DC’s Navy Yard neighbourhood, across from the Metro Station.
While there has been a renaissance in tall timber construction throughout Europe and the UK over the past decade, high-rise mass timber has been slower to take off in the US, partly due to restrictive code requirements. Versions of the International Building Code adopted in most US jurisdictions, including DC, cap the height of timber buildings at 85 feet, a height exceeded by 80 M.
To gain approval for 80 M’s exposed mass timber overbuild, Arup’s integrated team of mass timber experts worked closely with Hickok Cole and the DC code authority to demonstrate that our proposed solutions fulfilled current fire and life safety code requirements and aligned with the standards of the 2021 IBC, which will allow mass timber buildings of up to 12 storeys. The project is now on the path to becoming the first high-rise overbuild timber structure in North America.