ORA Feature Project

Thornton Place
Seattle, WA 

This project consisted of a 6-acre mixed-use development which contains approximately 50,000 ft² of retail space, a 14-screen cinema, 109 condominiums, and 278 market rate apartments all constructed over an estimated 850 parking spaces. The estimated construction cost is $164.5 million. ORA was engaged as the special (structural) inspection and geotechnical firm of record for this project.

Geotechnical aspects of this project include the excavation of approximately 200,000 cubic yards of soil to depths of up to 35 feet below the existing site grade, and the installation of soldier pile and lagging shoring with up to two rows of tieback anchors. ORA’s geotechnical consultations for this project include providing recommendations for geotechnical issues as they occur, including RFI’s and evaluating possible foundation system alternatives. ORA’s geotechnical inspections include the monitoring of the installation and performance of the shoring system, soil bearing verification, and structural fill placement and compaction.

Our scope for special inspection services included the following items:

• Cold formed steel framing

• Curtain wall fabrication and erection

• Epoxy-grouted anchor bolt installation

• Mechanical anchor bolt installation

• Prestressed concrete

• Reinforced concrete

• Shotcrete

• Spray fire-resistive materials

• Steel joist erection

• Steel seismic resistance system

• Steel stair erection

• Structural steel embedments in concrete

• Structural steel fabrication and erection

Developer:  Lorig Associates, LLC