Pilkington Planar™ has played a part in the renovation of Tulsa’s 50-year-old Central Library building, which has been brought up to date in all aspects – aesthetically, energy-performance-wise and its visitor experience.
The brief was to modernise the building without losing its period character, which from a glazing perspective meant bringing more light into the interior, while enhancing the building’s exterior appearance and delivering high levels of efficiency.
The most striking design addition is a series of glazed reading rooms on the second floor of the library, which take the form of protruding glass boxes.
As well as creating new areas of well-lit indoor space that can be used all year round, these also let light flood into the whole interior.
The architect’s concept for the structures has been turned into a reality, courtesy of close collaboration between Pilkington Planar™ specialist W&W Glass and engineer MODUS.
To deliver the frameless ‘jewel box’ cubes, the team specified the Pilkington Planar™ structural glass system, using glass fins and sidewalls to support the glass roofs, with no need for non-transparent structural elements, breaking up the views afforded to users.
For the glazed walls, insulating glass units with a low-emissivity (low-e) coating on surface number 3 (the outer face of the inner pane of glass) was used. This is topped with a roof comprised of laminated glass – also featuring a low-e coating – that makes use of a SentryGlas® interlayer in order to deliver excellent structural strength.
The structures are supported by laminated glass, and are connected by Pilkington Planar™ 905 and 902 series stainless-steel fittings, a low-profile system that minimises interruption to sightlines or distraction from heritage architectural features.
One of the main challenges when refurbishing a much loved heritage building is enhancing its usability and modernising its energy performance, while maintaining its essential architectural characteristics – this is one of the great strengths of structural glazing systems.
Jeff Haber, managing partner at W&W Glass, commented: “From an aesthetic perspective, it’s fair to say the impact of these glass boxes is impressive, tastefully blending modern cubic, transparent elements with the exterior façade and terrace all the while maintaining the historic charm.
“As well as creating whole new areas of floor space that enjoy views of the library’s beautiful courtyard, the increased glazing also lets natural light deep into the interior of the building while also efficiently helping to maintain a comfortable climate right through the year.
“At the same time, thanks to the minimal visual interruption that the Pilkington Planar™ system allows, the building retains its fundamental look and feel which has become such an icon for the city.
“The project has turned a beloved heritage building into a cutting-edge 21st century facility for the City of Tulsa, and the glazing has provided the top-quality refresh it deserves.”
Phil Savage, Head of Sales, UK Processing at Pilkington United Kingdom, said: “We’re proud that Pilkington Planar™ has been selected for this prestigious project, where only the highest quality solution was appropriate.
“This is the latest in a series of heritage refurbishments that has demonstrated the ability of our engineered structural glazing solution to modernise without compromising a building’s character.”
The renovation has turned the library into a multi-functional destination for a wide range of hands-on activities.
Across 260,000 square feet of space, it includes expanded meeting spaces, a revamped children’s play area, a 3-D printing station and a recording studio.
Pilkington United Kingdom Limited,
WA9 5 DZ
Phone: 01744 692000
Fax: 01744 692569
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