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| St. Paul, Minnesota
650,000
Securion
Architectural Alliance
McGough Construction
| | The primary structural system for this 13-story, class-A office building (formerly known as Minnesota Life Insurance) is cast-in-place, wide-module pan-and-joist concrete with 43-foot long post-tensioned beams. To accommodate a 950-vehicle, four-level below-grade parking structure, MBJ designed 18-inch thick foundation walls and a special retention system. Securing the foundation of the building and placing the parking structure underground was exceptionally difficult because of a deep layer of soft clay on the site. By excavating the site to match the building's floorplate and installing spread footings and shallow cassions, the building's load is supported directly by the sandstone bedrock below the clay. | 950
4, below grade
Cast-in-place concrete flat plate
| > 2001 Building Team Project Award, Building Design Construction
> 2001 NAIOP Award of Excellence
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| Oaks, Pennsylvania
580,000
SEI Investments
Meyer, Scherer and Rockcastle, Ltd.
Trammell Crow; Blue Rock Construction
| | SEI is a financial services and software company with a 90-acre corporate campus located a short distance from Philadelphia. MBJ has served as structural engineer throughout SEI’s growth from the design of its first buildings in 1995 to the present. Currently, MBJ has worked on 580,000 square feet of office and data center workspace in 10 different buildings, which are typically two and three stories and featuring built-up roof trusses and exposed steel framing. Distinctive features of the campus include column-free office areas with 64 foot bays and pedestrian connections to all the buildings via skyways and tunnels. | > 1997 Associated Builders and Contractors Award
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| Golden Valley, MN
715,000
Allianz Life Insurance
Architectural Alliance
McGough Construction
| Phase 1 involved the design of a 10-story, 415,000 square foot office building, framed with cast-in-place concrete and laterally braced with cast-in-place concrete shear walls. Long-span perimeter beams were post-tensioned to limit deflections, and custom pan layouts were used to increase bay sizes and reduce the number of columns. A pedestrian link leads from the office building to a 7-level precast concrete parking ramp, which holds 1440 vehicles.
Phase 2 (not pictured) is a 300,000 square foot expansion, which adds a 6-story office building, a 2-story commons building with auditorium, and a 2-story training center to the campus, as well as an extension of parking ramp. Structural components of the office building are cast-in-place wide-module pan and joists, constructed with flying table forms, long-span post-tensioned girders, and an architectural precast façade. The commons building uses composite steel framing with sloped raker beams, supported on yolked column supports in the auditorium. The exterior is clad with a combination of Pilkington structural glass and a tube steel curtainwall system supporting a granite veneer rainscreen.
| 1440
7
Precast concrete
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| St. Louis Park, MN
265,000
Dukes-Weeks
Pope Architects
Stahl Construction
| | Built as a speculative office building, this mid-rise structure offers 265,000 square feet of space on nine floors, not including the penthouse. The steel skeleton is cloaked in a granite façade and set on concrete slab floors, while a dramatic glass curtainwall vertically spans the front of the building. Also featured is a four-story atrium inside the main entrance and an adjacent parking garage. | 850
5
Precast concrete
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