The Salt Lake Temple of the Church of Jesus Christ of Latter-Day Saints is undergoing a major retrofit and renovation project aiming to protect this 130-year-old landmark for future generations. The retrofitting involves transferring the support of the Temple through a transfer system onto a seismic isolation system and new foundations. This seismic isolation system drastically reduces forces experienced by the historic building, allowing less retrofit work. The transfer consists of a large-scale post-tensioned concrete girder system. This presented many challenges including:

• Rebar and post-tensioning (PT) design for load transfer and seismic forces.
• Thermal control of mass concrete.
• Concrete placement requiring self-consolidating concrete (SCC).
• Placement of rebar, PT, and concrete in pipes installed under the existing foundation.
• Rebar and PT 3D modeling and coordination in Tekla.
• Incorporation of existing field conditions of previously placed concrete, rebar, and PT into the 3D model.
• Implementing new technologies during construction to ensure accurate placement of rebar and PT per the 3D model.
  
  

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