The Salt Lake Temple has been closed for renovation since December 2019.
The Church Office Building plaza closed for an upgrade in February 2021. The following is the latest in a series of regular updates about these projects.
The “jack and bore” process, a key component of the seismic renovation system of the Salt Lake Temple, continues to move forward. Pipes filled with reinforced steel, post-tensioning strands and high-strength concrete are placed under the existing foundation.
These steel pipes are 3.5 to 4 feet in diameter. Soil is removed from inside the pipes as they are gradually inserted horizontally. Each pipe is 40 feet long, made from two 20-foot-long pieces welded together. So far, five of 92 such pipes have been installed and three have been filled with concrete.
Deep excavation continues on the north side of the temple to prepare for three additional lower levels. These lower floors will include sealing rooms, two baptistries, administrative offices, changing rooms and a tunnel entrance to the temple from the Conference Center parking garage.
The excavation is nearly at the bottom level. The next steps will include pouring concrete slab as a working surface before formwork begins on the lowest floor of the temple addition.
All five rows of walers (horizontal bracing beams) in the large secant wall have now been installed to further reinforce the vertical steel and concrete columns that form the secant wall.
Finials and stones of various sizes continue to be removed from the towers and the upper north and south walls of the temple. Each stone is carefully cataloged and labeled before being taken to a storage place. Each stone will be reinstalled at the very same location it was originally placed. The picture below shows the original black markings used by the early Latter-day Saint builders to label each stone location.
Additional roof trusses have also been installed alongside the original trusses, which will remain in place. All new trusses will brace the upper north and south temple walls as part of the seismic improvements.
Reconstruction work on the Church Office Building plaza is proceeding. New concrete has been laid and waterproofed. An elliptical concrete structure is being built to display flags in the plaza.
The south and east sides of the Salt Lake Temple are covered by scaffolding and surrounded by construction equipment as crews continue the renovation project started in 2019.