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Acoustic windows keep the peace at former US Embassy
US Embassy building No 1 Grosvenor Square with its rebuilt stone facade, SFS on springs and listed building status. The design and installation of sympathetic timber windows and doors for such a project is far from straight forward which means it is ideal for George Barnsdale. Having seen the work Barnsdales
W
carried out at 20 Grosvenor Square, Lodha decided from a very early stage that the Lincolnshire based manufacturer would supply the fenestration for their own “presidential”project. Set in the heart of Mayfair with its replica
Oval Office, No 1 Grosvenor Square is a prestigious development of high end luxury apartments. One of the key requirements was to mitigate for the underground noise using a complex internal rebuild on giant springs to absorb vibration and sound.
hen it comes to luxury redevelopments, they don’t come much more complex than former
One of the biggest challenges the Barnsdale
team had to overcome was installing the windows before the external envelope was completed. This meant that windows were effectively located mid air using gridlines. This was a highly complex process as window one might be 300mm in front of gridline while window 2 was 1500mm. The result of this was nearly 70 interface drawings! Early involvement enabled George
Barnsdale to provide a detailed programme through the tender stage to ensure that the contractor had a good understanding of the critical timeframes and could make the right decisions at the right time. As time progressed, such collaboration with the architect and the wider project team proved invaluable to the process of overcoming issues as soon as they arose minimising disruption. The windows themselves were specified to meet the octave specific noise reduction and
Kalwall sheds light on cargo handling
Air services provider dnata has opened a new £30m high bay facility at Manchester Airport to help its expanding cargo handling business in the UK. Designed by architects RPS, the 13,500 sqm BREEAM-rated building includes an innovative mix of flexible Grade A office accommodation, workspaces and meeting facilities along with a dedicated gym and fitness centre. For part of the scheme, the architects specified Kalwall® translucent cladding to provide natural daylighting for the offices and gym. This building’s tall ceiling space required the 100mm self-supporting Kalwall panels to span freely across 4.8m x 2.8m apertures. While it is unusual to have such a tall span with no support, the inherent strength of Kalwall in a lightweight frame meant it could be achieved and add to the overall aesthetic appeal of the design. Furthermore, the integration of higher density insulation within the Kalwall panels means they are achieving an impressive U-value of 0.83 W/m2
K – half that of traditional double glazing. Kalwall panels can achieve a U-value of up to 0.28 W/m2
for the most demanding of applications. This reduces the reliance on HVAC systems and artificial lighting.
www.structura-uk.com/kalwall
Structura brings Shakespeare’s first theatre back to life
Structura UK, the fabricator and installer of glass curtain walling and specialist refinishing expert, has completed an intriguing project at ‘The Box’ on New Inn Broadway, London and it’s a project full of firsts! The location is the site of ‘The Theatre’, Shakespeare’s first polygonal purpose-built theatre and precursor to The Globe. It is also the first site where Structura has combined curtain walling with Accoya wood panels. Combining five floors of exhibition space and offices, the whole front facade has been supplied and installed by Structura. In order to test fully the innovative use of timber and glass, Structura had to build a rig for CWCT air, wind and impact tests. A series of experiments were then conducted using wind generated from an old Spitfire engine and wrecking ball impact. Supplying everything from entrance doors, sliding doors and the entire facade, Structura worked closely throughout with main contactor 8Build. This is a stunning example of how architects, contractors and suppliers can come together to help realise a client’s dreams, helping to embrace the future while celebrating the past. Case studies and technical information are available from Structura.
www.structura-uk.com/kalwall K
the whole window’s acoustic performance was validated not just the centre pane glazing data. “Unlike other manufacturers, we don’t just rely on glass manufacturer data because as soon as glazing is put into a frame, it’s performance is affected. Instead we have a vast array of tested technical and acoustic data as well as the installation detail to ensure accurate calculation of acoustic and thermal performance of the entire window.” Commented Tom Wright, MD at George Barnsdale. Alongside ultra high acoustic performance,
the project demanded a very high level of security with integrated security contacts and fitted custom handles to the doors.
01775 823000
www.georgebarnsdale.co.uk
WWW.ARCHITECTSDATAFILE.CO.UK
ADF FEBRUARY 2021
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