Swedish 1st Hill North Tower

LOCATION

Seattle, Washington

DESCRIPTION 

Our team is contracted to perform all earthwork and select demolition for the construction of the “Swedish First Hill North Tower” project, developed by Providence Health & Services, Real Estate and Construction. The project consists of a new inpatient care facility on the Swedish First Hill Campus, which includes 12 levels above grade, connects directly to the main hospital, and serves higher acuity patients. It houses a relocated emergency department at level 01, an imaging department, two operating room levels, and six patient room floors. Public and retail functions are located at level 01, while surgery and interventional facilities reside on levels 06 and 07. Surgery support and patient connections to the existing campus are on levels 03 and 08, and levels 09 to 15 include inpatient bed units. Additionally, there are three levels of parking and materials management below grade. The building’s main entrance will remain at 747 Broadway, supported by two secondary entrances: one through a Public Garden on Marion St., and the other at the Emergency Department on Minor Avenue.

SCOPE OF WORK 

The new tower replaces an older building at the southeast corner of Minor Ave. and Marion St. The old building has been demolished to grade; however, our team will be demolishing the below-grade portion of the existing building concurrently with the excavation of the new North Tower. The depth of the excavation necessitates the use of a conveyor system to transport the excavated soil out of the site.

PROJECT HIGHLIGHTS

• TESC and minimal surface demolition
• Excavation and export of 34,000 TCY of concrete rubble left behind by the above-grade building demolition contractor
• Demolition of 4,000 BCY of existing below-grade building slabs-on-grade (SOG), walls, and footings
• Excavation and export of 96,000 TCY of soil using a conveyor system
• Excavation of 11,700 TCY for mat and spread footings, including two tower crane footings
• Placement of 5,000 TN of structural backfill for ramps
• Preparation of 60,000 SF of SOG with cap break
• Trenching of 3,250 LF for below-slab plumbing and electrical