A result of the partnership between Architectural Nexus and the LDS Church’s Special Projects Department, Payson Temple is a 96,630 sq. ft. structure boasting detailed architectural precast concrete panels from Hanson Structural Precast.
The 1,615 individual precast concrete pieces cover a total of 116,876 sq. ft. To produce the complex precast pieces, Hanson used casting forms made of wood, plastic, rubber, foam and/or plaster. High-density plywood forms were used for the majority of the pieces. Foam, cut with a three-dimensional cutter, was used on irregular shapes. Forms for more intricate shapes such as medallions and the chiseled rope effect were custom made out of rubber. Plaster and plastic were also used to form different steps, edges and angles in the various precast pieces.
The precast panels have a sandblast finish. This required very tight control on the sand blasting so that when the different panels were erected side-by-side the surfaces would match up and blend together. The panels were produced during winter so the sandblasting operation had to be done indoors to control the environment and produce a uniform effect.
A major design goal was to minimize the number of visible joints. To achieve this goal, corner precast panels were designed with deep, four-foot returns in each direction around the corner. In brief, wall panels stop short of the building corners and L-shaped precast panels cover the corners like corner moldings on wood trim.
Due to the height-to-width ratio, Hanson designed and constructed the spire of lightweight Glass Fiber Reinforced Concrete (GFRC) panels. These panels were assembled together prior to erecting the spire on the building.
For seismic force resistance, the temple structure incorporates cast-in-place concrete shear walls that, in some places, run the full height of the building. The building’s two elevator shafts are constructed of concrete masonry units. The floors and roof consist of a composite metal deck and concrete system on steel framing. Using this system for the roof allowed forces from the steeple tower to be transferred laterally into perimeter structural elements such as shear walls to provide seismic resistance.