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Thursday, 21 March 2019 00:00cat

Hayward Baker installed drilled shafts to support the expansion of Sunrise Hospital

Written by  TheStructuralEngineer.info
Drilling the shaft - diameters ranged from 36 to 60 in. and extended to depths of between 30 and 45 ft below ground surface. Drilling the shaft - diameters ranged from 36 to 60 in. and extended to depths of between 30 and 45 ft below ground surface.

Sunrise Hospital and Medical Center sits on a 30-acre campus. The owner undertook a $130 million, multi-phase expansion project to increase capacity, including the addition of a new five-story patient tower. Hayward Baker was able to save two weeks on the unexpectedly fast-track deep foundation schedule by mobilizing a second drill rig to install drilled shafts.

The work began several months after the originally anticipated start date due to a delay in necessary permits issued to the owner. This shifted the overall project into fast-track mode. Additionally, the owner needed to balance maintaining full hospital access and the needs of patients with ongoing construction activities.

Soils beneath the building footprint generally consisted of approximately 10 ft of silty clayey sand over sandy clay with groundwater encountered at 15 to 17 ft below ground surfaceTo meet loading requirements, the geotechnical engineer recommended drilled shaft deep foundations. HBI installed the shafts with column piers supported on single shafts or a shaft grouping, depending on specifications. Shaft diameters ranged from 36 to 60 in. and extended to depths of between 30 and 45 ft below ground surface. Nearly eighty 4000-psi reinforced drilled shafts were installed for the deep foundation work.

 Please visit Sunrise Hospital and Medical Center expansion if you want to find out more about this project.

Source: Hayward Baker

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