These two five-story Hilton-branded hotels are separated above ground but share back-of-house space and below-grade parking facilities on a 2.6-acre site.
Embassy Suites is a 172,716-sq. ft., full-service hotel with 203 all-suite guest rooms. Amenities include 7,200 sq. ft. of meeting space, a 6,700-sq. ft. ballroom, a 5,700-sq. ft. restaurant, an outdoor pool with a sun deck and a fitness center.
Hilton Garden Inn is a 95,452-sq. ft., select-service hotel with 172 guest rooms including six suites. Amenities include 1,000 sq. ft. of meeting space, a business center and a restaurant with a grab-and-go café concept.
The project’s structural system has reinforced concrete columns supporting post-tensioned reinforced elevated concrete slabs. Each hotel is served by a separate two-pipe water source heat pump loop with boilers and closed-circuit cooling towers located on each roof. The premium concrete superstructure allows for significantly longer use compared to wood-frame construction. The buildings have a sandstone exterior to suit the Boulder architectural aesthetic. A two-story, 216,440 sq. ft. underground parking garage with approximately 479 spaces, self-park and valet, serves both hotels plus an adjacent office building.
This project presented geotechnical engineering challenges due to high-permeability soils and high groundwater conditions combined with the below-grade parking structure. Based on an evaluation of four alternatives for foundation support and groundwater management, the development utilizes overlapping secant piers to create a structural foundation wall and seepage cutoff around the building perimeter and a conventional slab-on-grade floor underlain by a low-capacity underdrain system.