About

With more than 40 years of experience, Leonard Joseph has analyzed, designed and reviewed high-rise buildings, sports facilities, hangars, hotels, historic buildings, manufacturing facilities, and parking garages. He works with a wide variety of materials, including structural steel, reinforced concrete, precast and post-tensioned concrete, masonry, wood, and light gage framing. For buildings around the world, Len deals with seismic, wind and other environmental hazards, and incorporates local construction practices into his designs.

His project credits include Wilshire Grand Center, a 335-meter mixed-use tower with Buckling Restrained Brace outriggers in a high seismic zone; Shanghai Tower, a 600-meter mixed-use tower; Taipei 101; Ping An International Financial Center, a 660-meter office tower; and the Petronas Twin Towers. Currently, Len is working on the Jeddah Tower, a 1,000-meter mixed-use…

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Videos

03 March 2008

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Tall Buildings: Sustainable Design Opportunities

Akbar Tamboli from Thornton Tomasetti, focused on the incorporation of sustainable structural designs at the CTBUH 8th World Congress. The three major tall buildings he...

Research

08 August 2017

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Frontiers in High-Rise Outrigger Design

Hi sun Choi & Leonard M. Joseph, Thornton Tomasetti; SawTeen See, Leslie E. Robertson Associates; Rupa Garai, Skidmore, Owings & Merrill LLP

In 2012, CTBUH published the first Outrigger Design for High-Rise Buildings Technical Guide. In 2016, the CTBUH Outrigger Working Group felt it would be beneficial...

Research

01 March 2016

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Wilshire Grand: Outrigger Designs and Details for a Highly Seismic Site

Leonard M. Joseph, C. Kerem Gulec, and Justin M. Schwaiger, Thornton Tomasetti

The 335 m tall Wilshire Grand Center tower under construction in Los Angeles illustrates many key outrigger issues. The tower has a long, narrow floor...