EPS provided civil engineering, topographic survey, ALTA survey, platting, and construction staking for the Gilbert Arizona Temple. Located on a 15.4-acre site, the 85,000-sq.-ft. Temple is one of approximately 140 temples that have been constructed throughout the world by The Church of Jesus Christ of Latter-day Saints. The site also includes a Meeting House used for Sunday worship services and weekly activities, an ancillary building which houses the majority of the electrical and mechanical equipment required to operate the Temple, and more than 650 parking spaces. Additionally, the project included a utility tunnel that was constructed out of pre-cast concrete in order to run the multiple service lines between the two buildings.
One unique aspect of the project was that the site plan intentionally did not use open space areas for retention basins. Instead, EPS’ civil plans included designs for six StormTech beds at key locations on the site to retain the site’s stormwater underground. The combination of chambers, end caps, and voids in both the gravel bedding and backfill create volume for the stormwater to be retained and naturally percolate out the bottom of each bed. Drywells were also used to ensure timely percolation. The required MC-3500 Storm-Tech chambers (1,015 total) were the largest order ever received by the manufacturer. The six beds collectively provide almost 200,000 cubic feet of stormwater volume.
Another unique aspect of this project was the LDS Church’s request that the design team coordinate with Salt River Project (SRP) for the undergrounding design and construction of existing 69kV overhead lines along the project’s frontage of both Greenfield and Pecos Roads. The undergrounding was done for aesthetic purposes – removing the large poles and overhead lines which would otherwise detract from the beauty of the nearby Temple. EPS Group assisted SRP in their design and construction by coordinating crossings of the new duct banks with proposed utilities, preparing legal descriptions and exhibits for the creation of new SRP easements, providing construction staking, and preparing as-built plans.