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Structural-steel buildings can make their frames part of the architecture while solving problems of span, seismic movement, tight sites, retractable roofs and adaptive reuse. Building Design + Construction’s feature “13 structural steel buildings that dazzle” documents projects in which steel is simultaneously the load-bearing system and a visible design element. The source text available for this article identifies 12 projects by name; one additional project in the 13-project feature could not be identified reliably, so it is not guessed here. The documented examples show how engineers and architects use bracing, trusses, plate walls, exposed connections, moving ribs and retained industrial structures to turn constraints into expressive buildings.
What makes these structural-steel buildings remarkable?
The strongest common thread is not a particular style. It is the way each project makes a structural decision answer several problems at once. A tied arch carries a very wide arena roof while shaping the silhouette; a plate shear wall stabilizes a narrow residential tower while reinforcing its tapered form; long trusses keep a press box column-free and incorporate seismic movement; and a reused factory roof becomes the starting point for a new sports complex.
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1Scan for outdated or missing drivers - takes under a minute2Clear out junk files and repair common Windows errors3Fix the driver behind crashes, sound loss and screen glitchesSteel is especially useful in these situations because members can be fabricated to precise geometries, assembled quickly in difficult sites and arranged in long spans or slender frames. When designers leave those members, bolts, braces or connections visible, the structure becomes part of the building’s visual identity rather than something hidden behind finishes. The projects below are historical examples reported by Building Design + Construction, not current cost or performance benchmarks; the feature’s publication year was not established in the supplied material.
Which projects best show steel solving a structural challenge?
| Project | Primary challenge | Steel strategy | Architectural result |
|---|---|---|---|
| Barclays Center, Brooklyn | Large arena roof and a heavy exterior skin | Tied-arch roof trusses; added steel for the facade | Weathered Cor-ten lattice and a broad entrance canopy |
| National Geospatial-Intelligence Agency New Campus East, Virginia | Long curved office wings and a central atrium | Steel frame supporting open bays, exposed atrium structure and an ETFE roof | Two sweeping 900-foot wings around a daylit center |
| City Creek Center retractable roof, Salt Lake City | Weather protection over two city-block sections | Whalebone-shaped steel ribs on tracks and wheels | Glass roof sections that open and close as a coordinated system |
| HL23, New York | Narrow urban site and a tapered 14-story form | Steel plate shear wall with a perimeter braced frame | Expressive, faceted residential silhouette |
| California Memorial Stadium press box, Berkeley | 375-foot-long box with very few supports in a seismic region | Long-span steel trusses, pin assemblies and cantilevers | A thin, continuous profile over the stadium bowl |
| Lee Hall III, Clemson University | Making the frame communicate the building’s purpose | Exposed columns, beams, cable bracing and a steel trellis | Structure becomes the architectural language |
| El Dorado Conference Center, Arkansas | Creating a civic identity rooted in local industry | Exposed steel members, bolts and derrick-like forms | An industrial vocabulary in the public hall |
| Twilight Epiphany, Rice University | Making a heavy roof appear to float | 72-by-72-foot roof on eight slender steel columns with long cantilevers | A precise, seemingly weightless Skyspace |
| The Corner Condominiums, Missoula | Triangular infill site and strict height limits | Steel frame with weathering-steel cladding | A compact, rugged exterior fitted to the site |
| Sierra Bonita, West Hollywood | Affordable housing with a strong communal focus | Exposed steel and a braced-frame expression around a courtyard | Visible structure gives the housing a clear identity |
| Solar Canopy, Chicago | Supporting solar and vehicle-charging equipment in a small prototype | 6,000 pounds of architecturally exposed steel | Infrastructure presented as a civic-scale object |
| Chelsea Piers Connecticut | Converting a manufacturing building into large sports spaces | Retained roof structure strengthened with steel tension chords and trusses | Column-free zones with substantial existing fabric preserved |
How does steel shape the largest spans?
Barclays Center: a facade that required its own steel solution
The Brooklyn arena combines an expressive exterior with an unusually demanding roof. The feature describes a weathered Cor-ten steel lattice facade, an 85-foot entrance canopy and an arched roof spanning more than 380 feet. Because the facade is not a lightweight decorative screen, nearly 1,000 tons of additional steel were added to support it. Tied arch trusses carry the roof while allowing the building to keep a strong, continuous arch profile. The lesson is that an architectural skin can become a primary structural load, requiring its own frame and connections.
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California Memorial Stadium press box: long spans in a seismic setting
Berkeley’s two-story press box is reported as 375 feet long, with two 100-foot main spans and 33-foot cantilevers at the ends. More than 1,350 tons of structural steel were used, and the press-box portion of the wider stadium project was reported at $40 million. The largest reported crane pick was a 165-ton truss segment lifted at a 160-foot reach. Rather than distributing the load through many columns, the design uses a small number of supports, long trusses and pin assemblies as part of its seismic strategy. Those details let the box cross the seating bowl while accommodating movement demands that a rigid, heavily supported frame would handle differently.
National Geospatial-Intelligence Agency New Campus East: open offices under a curved frame
The Virginia campus is described as two curved wings, each about 900 feet long, arranged around a central atrium. Steel supports large open office bays and an exposed frame at the atrium, which is capped by a lightweight ETFE roof. The frame therefore has two jobs: provide flexible interior floor plates and create a legible civic-scale space at the center. The curved plan is not merely a visual gesture; it organizes circulation and daylight around the shared atrium while steel keeps the interior relatively open.
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City Creek Center: a retractable roof engineered as a machine
City Creek Center’s roof is a custom steel-and-glass mechanism rather than a fixed canopy. Two sections each span one city block and measure 240 by 58 feet. Steel ribs shaped like a whalebone support the glass panels; tracks, wheels and a control system let each section retract. The feature reports travel of up to 8 feet per minute and an opening or closing cycle of about six minutes. Designing the ribs, rolling components and control logic as one system illustrates a broader point: structural steel can be detailed for controlled movement, not only for static gravity and lateral loads.
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Twilight Epiphany: making cantilevered steel disappear
Rice University’s Twilight Epiphany Skyspace uses a 72-by-72-foot roof supported by eight slender steel columns. Long cantilevers push the supports away from the roof’s edges, reducing visual cues that would reveal how the roof is held up. Here, steel’s strength allows a deliberately minimal composition: the engineering is substantial, but the visitor’s experience is of a floating plane framing the sky. The project demonstrates that exposed steel does not have to look heavy; proportion, support spacing and connection detailing can make a steel frame read as almost weightless.
How do designers use steel on difficult urban sites?
HL23: stability system as an exterior expression
HL23 is a 14-story residential building on a narrow New York site with a distinctive tapered geometry. Its steel plate shear wall provides lateral resistance, while a perimeter braced frame responds to the constrained footprint and supports the building’s architectural expression. Instead of hiding the stabilizing system, the design makes the frame part of the facade’s identity. The project shows why a narrow tower often needs more than a conventional interior core: perimeter steel can help organize both the forces and the visible shape.
The Corner Condominiums: fitting a triangular infill parcel
Missoula’s Corner Condominiums use a steel frame and weathering-steel cladding on a triangular infill site subject to tight height limits. Owner and architect Eric Hefty explained the choice directly: “Because of the constraints of the site and program, we didn’t even consider any other structural system but structural steel.” The statement captures a practical advantage of steel in irregular urban parcels: a frame can be laid out around an awkward boundary without surrendering the program to a repetitive concrete grid. Weathering steel then reinforces the building’s response to its setting with a deliberately durable, changing surface.
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Sierra Bonita: exposed bracing in affordable housing
Sierra Bonita in West Hollywood is a five-story affordable-housing project organized around a courtyard. Its exposed steel and braced-frame expression make the lateral system visible from the shared space and the street. In a housing project, that visibility can do more than create an industrial look: it gives residents and passersby a readable sense of how the building stands, while the courtyard provides an organizing void around which the steel frame is experienced.
What happens when the structure is intentionally left visible?
Lee Hall III: a teaching building that shows its work
At Clemson University, Lee Hall III uses exposed steel columns, beams, cable bracing and a trellis as part of its architectural language. The curved roof is made with faceted geometry rather than curved steel, a choice that keeps fabrication aligned with straight, repeatable members while producing a curved overall profile. That distinction matters: a building can appear fluid without requiring every beam to be rolled into a compound curve. The result links the building’s visual character to understandable structural pieces.
El Dorado Conference Center: industrial history in the connections
The El Dorado Conference Center in Arkansas exposes columns, beams, bolts and connections and draws on the region’s oil-industry history. Derrick-like steel forms shape the public hall, turning familiar industrial imagery into a civic interior. Because the connections remain visible, the building communicates how it was assembled as well as what it represents. This is architecturally exposed structural steel used as narrative: the frame carries loads and carries memory.
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Chicago Solar Canopy: a small prototype with a large visual presence
The Chicago Solar Canopy prototype is reported as 11 feet high and uses 6,000 pounds of architecturally exposed steel. It supports solar equipment and charging for electric or hybrid vehicles. The project demonstrates that expressive steel is not limited to arenas or towers. At a smaller scale, careful member proportions and exposed connections can turn infrastructure into an identifiable public object while keeping the support system clear.
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Chelsea Piers Connecticut: adding steel without erasing the past
Chelsea Piers Connecticut converted a former manufacturing building into a sports complex. Designers retained much of the existing roof structure and added steel tension chords and trusses to create large column-free zones. That approach avoids treating adaptive reuse as a choice between total preservation and total replacement. The existing roof remains useful, while new steel supplies the strength and geometry needed for sports areas. It also reduces the amount of new structural material that would be required if the roof had been demolished and rebuilt from scratch.
The project is a useful counterpoint to new-build examples: steel can be a surgical reinforcement material. Engineers can add members where new spans or loads demand them, preserving the visual and embodied value of an industrial shell while changing its use.
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What should readers take from the feature’s 13-project survey?
Across the documented examples, five design decisions recur:
- Match the system to the constraint. Plate walls and perimeter braces suit a narrow tower; long trusses suit a press box; moving ribs suit a retractable roof.
- Let the structure carry architectural meaning. Cor-ten lattice, derrick-like forms, exposed bolts and cable bracing make the frame legible rather than hiding it.
- Use geometry strategically. Faceted straight members can create a curved roof image, and cantilevers can make a roof appear to float.
- Design for movement where movement is part of the brief. City Creek’s tracks, wheels and controls show that a roof can be both a structure and an operating machine.
- Reuse before replacing. Chelsea Piers Connecticut demonstrates how added steel can upgrade an existing roof while preserving much of the original building.
The source feature is best read as historical project reporting. Its quantities—such as the press box’s reported steel tonnage, the arena’s added facade steel and the solar canopy’s steel weight—describe those commissions at the time of publication, not current construction prices, code requirements or universal benchmarks. Present condition, current use and award status were not independently verified for this article.
Frequently Asked Questions
Why is weathering steel used on some building exteriors?
Weathering-steel cladding is selected for its deliberately changing surface and its ability to express a rugged, industrial character. At The Corner Condominiums and Barclays Center, that visual quality is coordinated with a steel structural or support system rather than treated as an unrelated finish.
What does “architecturally exposed structural steel” mean?
It means the members and often their bolts, welds or connections remain visible as finished architectural elements. The Chicago Solar Canopy, Lee Hall III and El Dorado Conference Center use exposure to make the way the building is assembled part of the design.
Can an existing industrial roof support a new sports facility?
It can, if engineers assess the retained structure and add reinforcement where new spans, loads or clearances require it. Chelsea Piers Connecticut kept much of its manufacturing building’s roof and added steel tension chords and trusses to create large unobstructed areas.
Why do some long-span steel buildings use pin assemblies?
Pin assemblies can be incorporated into a connection strategy that allows a frame to accommodate movement and redistribute forces instead of behaving as one completely rigid piece. The California Memorial Stadium press box used pin assemblies within its reported seismic design approach.
