College of Engineering - Chicago

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College of Engineering Building

Chicago

College of Engineering Building

Urbana, IL

New 125,000 sq ft classroom building for the College of Engineering. The design of the building focuses on providing a collaborative and flexible educational experience, while highlighting the building systems as a teaching tool. In this manner the structure becomes part of the architecture – the majority of the steel structure is exposed, and done so in a meaningful way.

Several unique and highly coordinated structural features were utilized, including exposed AESS steel members and connections, exposed feature braced frames with gusset plates shaped to illustrate load flow, feature beams in the ceiling of the auditorium with penetration geometry determined by material optimization, and polished concrete floors and exposed concrete walls.

Fire engineering studies were conducted to eliminate fireproofing requirements for the majority of the steel floor framing. The University mandated the use of brick in the façade – we took this requirement to heart and performed significant research into using brick as part of the structural system; these efforts resulted in using structural brick in the façade, with a design that eliminated all joints and shelf angles.

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Taylor Street - Chicago

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Taylor Street Apartments & Library

Chicago

Taylor Street Apartments & Library

Chicago

Part of a pilot program for the City of Chicago and Mayor Rahm Emmanuel, Taylor Street combines affordable housing with a neighborhood amenity, to help revitalize the Little Italy neighborhood. It is the product of a public-private partnership between the Chicago Housing Authority, the Chicago Public Library, and Related Midwest.

One of its goals was to provide high level design for affordable housing, while maintaining project budgets.

The structure is an efficient reinforced concrete flat plate for the 73 apartments, and a long-span post-tensioned slab over the library.

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Mashreq Bank - Dubai

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Mashreq Bank HQ

Dubai

Mashreq Bank HQ

Dubai

35 story headquarters office building for Mashreq Bank. The lower portion of the building is square in plan, and houses parking and conference facilities. The plan then changes to an ‘L’ shape, and is primarily tenant office. The bank headquarters occupy the top four stories of the building, and the plan changes back to a square, resulting in a 90' cantilever that completes and re-establishes the building form, 30 stories in the air.

The primary structure is reinforced concrete, consisting of a core wall system with an innovative reinforced concrete braced frame. The top four stories are structural steel, and are supported by utilizing cantilevered multi-story deep steel trusses.

Much analysis was performed to provide an efficient solution that also resulted in a level floor when construction was complete. The structure has been optimized holistically considering parameters such as cost of steel, cost of various strengths of concrete, cost of reinforcement, stiffness of the materials utilized and also value of the floor area taken by the size of the columns. The cantilever trusses were designed to facilitate their erection, allowing for them to be either built off of the supporting concrete structure, or erected on the ground and strand-jacked into place.

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NATO Headquarters - Brussels

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NATO Headquarters

Brussels

NATO Headquarters

Brussels

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The new NATO Headquarters provides 2.2 million square feet of office and conference facilities for its member nations. The design consists of eight long office wings which taper in height, connected by a feature open central spine – the Agora.

The Agora is a dramatic seven-story tall open space, containing exposed 100’ spanning trusses at its ceiling, glass-enclosed elevator towers with connecting walkways, and feature up to 100’ x 100’ cable net walls at each end of the space with cantilevered sunshade elements.

The structure had two primary drivers – the long wings required an efficient, repetitive system that could also be easily adapted to their changing geometry, while the exposed Agora structure needed elegant, expressive solutions to assist in establishing the architecture – all while satisfying considerable blast requirements.











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Address Sky View - Dubai

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Address Sky View

Dubai

Address Sky View

Dubai

Large-scale development for the same client as Burj Khalifa, to provide views of the World’s Tallest Building.

Consists of two concrete 50 story towers connected at their top by a steel amenity bridge spanning 300'. The towers house hotel and condominiums, and utilize offset structural cores to provide an optimum view of Burj Khalifa.

The amenity platform contains a feature Skydeck with an infinity pool, observation deck, and cantilevered glass walkway. A rigorous wind tunnel study and accompanying wind mitigation effort was undertaken to ensure a comfortable environment 50 stories in the air.

The amenity structure utilizes long-span multi-story deep steel trusses, which required many analytical studies as these elements rigidly link the two buildings together. These studies also incorporated considerations of the construction of the 1000+ ton steel structure, which was performed by erecting the trusses into four sections on the ground, which were then strand-jacked into place.

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Burj Khalifa - Dubai

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Burj Khalifa

Dubai

Burj Khalifa

Dubai

The Burj Khalifa is not only the World’s Tallest Building – at 2,717' it was over 985' taller than the previous tallest building!

Such a leap forward required approaching the building’s design like a giant research project. Dozens of wind tunnel tests were performed to shape the building to minimize its response to the wind, and to tune its structure to best accommodate wind loading and motions. Construction and material technologies were examined to provide solutions that facilitated both design and construction.

The beauty of these solutions is that although state-of-the-art advancements in material and construction technologies were incorporated, the design of the building essentially used conventional, proven approaches and techniques – in innovative ways. One such innovation was the development of the reinforced concrete “buttressed core” structural system as the primary support for the tower.

This structure extended nearly 2,000' in height and was topped with a 755'+ structural steel braced frame spire. The 160+ stories of the tower consist of a hotel, serviced apartments, condominiums, office space, and amenity levels.

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World Voices Sculpture - Dubai

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World Voices Sculpture

Dubai

World Voices Sculpture

Dubai

World Voices is the featured artwork located in the residential entrance pavilion at Burj Khalifa. This pavilion is a 4-story tall volume, and artist Jaume Plensa won a global competition to provide an art installation to complement one of the entrances to the World’s Tallest Building.

The piece consists of a series of telescoping titanium rods supporting numerous brass cymbals, each cymbal representing a country in the world. The artwork was intended to have an organic aesthetic, with the rods symbolizing reeds emerging from a water feature.

We worked with the artist to realize and enhance his vision – the 55' long, 3" diameter rods were precisely analyzed and designed to understand their deflected shape, to better mimic the behavior of a reed bending under its own weight.

The cymbals were located along these rods directly underneath water droplet mechanisms in the ceiling above. There were no visible connections in any of the elements – all connections were performed using sleeved machined fittings.

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Block 9 - Fargo

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Block 9 Development

Fargo, ND

Block 9 Development

Fargo, ND

Mixed-use development in the heart of downtown Fargo. The building consists of an 18 story tower and 5 story podium, housing hotel, condominiums, offices, and retail spaces. The design and scale of the project complimented the existing downtown.

The tower structure utilizes a reinforced concrete post-tensioned (PT) flat plate system. The design of the PT strands was optimized to reduce material, by curving the strands in the plan to follow the natural force flow in the slab.

The podium structure utilizes steel construction, which facilitated construction sequencing by allowing the concrete tower to proceed first, which reduced the construction schedule.

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