TURNBERRY PLACE – LAS VEGAS
The five-star Turnberry Place development in the heart of the Las Vegas Strip consists of four – 40-story condominium towers and an expansive club facility. The size of the structures, the sequencing of construction, and depressed parking levels created specific geotechnical and construction challenges. Due to varying subsurface conditions and groundwater encountered at a shallow depth, Langan determined the most appropriate and cost-effective foundation solution was a mat foundation alternative. A neighboring tower to the north is supported on drilled shafts, a much more conservative and costly foundation alternative. Results of Tower I monitoring indicated maximum settlements of 1 to 2 inches, below our theoretically estimated maximum, and structurally tolerable, 3 to 4 inches. Geotechnical recommendations were also made for construction dewatering and a permanent sub-slab drainage system for a depressed garage floor 12 feet below the static groundwater level. Langan’s recommendations for steeply sloped construction excavations, in lieu of a temporary shoring system, saved about $800,000 in construction costs.