Glass ceiling: Saflex® Structural

Designing a museum for the Academy of Motion Picture Arts and Sciences in Los Angeles is no easy feat. How do you create an unmissable architectural statement in a megacity so intimately connected with silver screen glamour? More practically, how do you design a building that can withstand LA's near-tropical temperatures, severe air pollution and frequent earthquakes, while remaining as ageless as the city's resident movie stars? Saflex Structural provided the technical and aesthetic solution to the significant challenges the project faced.

The new museum consists of two elements. The first one is the lavishly restored Streamline Moderne May Company Building – now renamed the Saban Building – a former department store that features a prominent cylindrical corner covered in gold-leaf mosaic.

With the exterior of the $482 million Academy Museum of Motion Pictures largely finished, and the building currently being fitted out for its upcoming grand opening in April 2021, it's fair to say that the Genoa-based firm of starchitect Renzo Piano and structural engineers at New York's Knippers Helbig Advanced Engineering have succeeded.

Connected via a glass walkway is the brand new 1,000-seat David Geffen Theater, housed in a spherical precast concrete volume topped by the panoramic rooftop Dolby Family Terrace, itself covered with a futuristic transparent glass dome.

Roman Schieber, associate director at Knippers Helbig explains that the glass panes are attached to the structure only on the inner side, leaving the outer layer of the dome free of any further connecting elements. ‘We needed a laminated glass product with a stiff PVB interlayer. That was the basis of the design from the beginning,’ he elaborates. ‘Because structural strength and rigidity were vital for this shingled design, Knippers Helbig specified the use of Saflex Structural.’

All parts of the new building have been designed with care, not least the spectacular, shimmering glass roof that shields visitors from the elements, yet provides perfect, crystal clear views of Hollywood. With a diameter of 45.4 metres, over 1,500 individual laminated glass panels cover an impressive 2,747m2 of space. Specifying the right materials and components for this roof – the building's most distinguishing feature – meant ensuring structural integrity while achieving maximum transparency.

The low-iron, uncoated glass panels, together with a Saflex Structural PVB layer, ensure crystal clear views of the surrounding cityscape of LA's iconic Wilshire Boulevard. The high-quality interlayer also protects the glass against delamination, preserving the dome’s integrity in years to come.

Just as important as the aesthetics of this gravity-defying structure was its strength. Saflex Structural's superior strength – paired with the isolation of its elegant steel structure from the ground, allowing it to move and sway – practically eliminates the risk of damage should one of California's notoriously frequent earthquakes occur.

Despite its effortless appearance, the structural design and development of the glazed roof lasted several years and included detailed planning of the installation sequences for the 146 different shapes and sizes of glass panel. This ensured the project could be completed on time as well as on budget, with almost no change orders required.

‘Renzo Piano’s team is fascinated by every engineering detail, and we found the collaboration to be extraordinary.’ says Schieber on working alongside the Pritzker Prize-winning architect. ‘We created a unique, shingled glass concept.’ The effect is ephemeral – a seemingly weightless glass shell with high structural strength and transparency. Saflex Structural provided an ideal fit for this high-performance, high-profile building, combined with an expert team from around the globe.

© Architonic