Council on Tall Buildings and Urban Habitat

Outrigger Design Working Group
Outrigger systems have been widely used in super tall buildings since the 1980’s, eclipsing the tubular frame systems previously favored.  However, the outrigger system is not listed as a seismic lateral load resisting system in any code, and design guidelines are not available.  As outrigger systems become more commonplace in tall building design, CTBUH recognized the need for general guidelines and thus formed the Outrigger Working Group.
Hi Sun Choi
Thornton Tomasetti
Leonard Joseph
Thornton Tomasetti
Neville John Mathias
Skidmore, Owings, & Merrill
Goman Wai-Ming Ho
Arup & Partners Hong Kong
2012 technical guide released at the
Shanghai Congress
Working Group Milestones
Contact Information
For more information on the Outrigger Design Working Group, please contact any of the working group Co-Chairs (contact information is available by clicking on the Co-chair images above) and/or