urbanLab Magazin 2021 - Transformation
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tional welding of flat steel plates, partially<br />
by CNC-milling, some of the pieces<br />
were fabricated using drop-forging,<br />
such as the cable clamp or the cable<br />
end fitting detail.<br />
On site, the steel pieces arrived in<br />
so-called ladder frames, which means<br />
that 2 parallel arch segments were already<br />
pre-assembled, including the<br />
connecting north-south struts, and the<br />
secondary steel structure. This simplified<br />
shipping, handling and installation.<br />
After placing the primary structure (and<br />
attached secondary framing) on a scaffolding,<br />
the individual segments were<br />
joined using an internal pre-tensioned<br />
connection in the arches, and the typical<br />
bolted connection for the northsouth<br />
struts. The remaining element of<br />
the structural system, the diagonal twin<br />
cables, were installed and fully pre-tensioned.<br />
After interconnecting the ladder<br />
frames and connecting the structure to<br />
the installed embed connections, and<br />
final inspection of the cable pretension,<br />
the supporting posts of the scaffolding<br />
were carefully removed, so that the<br />
structure spans free.<br />
Glazing<br />
The shingled glazing was installed in a<br />
specific order, carefully balancing the<br />
additional weight and avoid non-uniform<br />
loading. The self-weight of the<br />
glass panes adds the most weight to the<br />
structure and is much heavier than the<br />
supporting steel structure itself. -<br />
Annotation:<br />
This article was first published in the<br />
IGS <strong>Magazin</strong>e (Intelligent Glas<br />
Solutions) Spring <strong>2021</strong> Issue.<br />
Roman Schieber<br />
Associate Director, Knippers Helbig<br />
Florian Meier<br />
Associate Director, Knippers Helbig<br />
joined Knippers Helbig in 2007; since 2016 he has been a member of the board<br />
of directors. As both an Architect and Certified Facades Engineer, Roman leads<br />
the KH facades team in New York City and Stuttgart. His association to structural<br />
engineering, environmental design and deep knowledge of the latest fabrication<br />
techniques allow him to transfer structural efficiency and thermal performance<br />
into façade design. The center aspiration of this work is to create a balanced link<br />
between architectural motivated and performance-driven design. At the beginning<br />
of the century Roman worked on a number of outstanding and internationally published<br />
projects in Asia, such as the Massimiliano Fuksas – designed ~1mile long<br />
free formed terminal of the Bao’an International Airport in Shenzhen or the 0.7 mile<br />
long main axis for the World Expo 2010 in Shanghai. In the second decade of this<br />
century projects in the United States came to the fore. Roman’s portfolio includes<br />
projects like the Academy Museum of Motion Pictures in Los Angeles – designed by<br />
Renzo Piano Building Workshop; the Museum of Fine Arts in Houston – designed<br />
by Steven Holl Architects, or Harvard University’s Science and Engineering Complex<br />
in Boston – designed by Behnisch Architects.<br />
is a structural engineer and was trained at the TU Munich with a focus on architectural<br />
geometry, computational formfinding methods and structural optimization at<br />
the renowned chair of structural analysis, Prof. Bletzinger, where he was a research<br />
assistant. During his studies, Florian received a scholarship at the Oskar von Miller<br />
Forum, Munich, which is an interdisciplinary and internationally oriented excellence<br />
initiative for students in the field of construction.Florian has experience in<br />
a variety of materials and innovative fabrication technologies. Among other projects,<br />
his portfolio includes the granite stone vault of the Sean Collier Memorial in<br />
Cambridge (Höweler + Yoon Architecture), a canopy robotically manufactured using<br />
carbon-fiber reinforced polymers (Achim Menges), and the 150 ft. spanning steel<br />
and glass dome of the Academy Museum of Motion Pictures in Los Angeles (Renzo<br />
Piano Building Workshop). Florian is a member of the International Association<br />
for Shell and Spatial Structures (IASS), where he recently presented. His work has<br />
been published in magazines and conference papers, such as DETAIL structure,<br />
Bautechnik, Deutsche Bauzeitung (DBZ), IASS, Advances in Architectural Geometry<br />
(AAG). At Cooper Union, Florian is currently co-teaching ARCH132 Structures II.<br />
APPLIED IDEAS<br />
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