Thin-shell roof withstanding internal demolition of London building

07/2/2014 | Engineering News-Record

The thin-shell, concrete roof at the former Commonwealth Institute building in London has been preserved during the building's internal demolition through temporary structural supports installed during the process. The copper-covered roof spans more than 600 square feet, and its reinforcement has been deemed a "balancing act," since its central shell is only about 30 inches thick. The work called for the installation of steel frames at the bases of two internal roof truss supports and retaining one hip rafter to hold up the structure.

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