DELIVERING A SUPER SEVEN October 2015
Levolux has delivered one of its largest and most challenging Solar Shading solutions for Chiswick Park’s Building 7 in West London. The impressive 12-storey building, which provides 334,000 sq. feet of Grade ‘A’ office accommodation, represents the final piece of the Chiswick Park masterplan, which was conceived back in 1999.
45 of the world’s best known brands, such as Discovery, PepsiCo, Aker Solutions and Starbucks have adopted Chiswick Park as their UK and European headquarters. With the inclusion of the recently completed Building 7, Chiswick Park now creates a workplace for 12,000 people, making it one of London’s most popular business destinations.
In line with other, recently completed buildings on the site, Rogers Stirk Harbour + Partners designed Building 7 to achieve a BREEAM rating of ‘excellent’ by adopting the very latest building technology, including a fully automated Solar Shading solution from Levolux. The solution comprises motorised external ‘Super Louvres’, which are linked to an intelligent control system, along with internal Venetian Blinds and Roller Blinds.
The Solar Shading solution applied to Building 7 is quite possibly the largest and most sophisticated that has ever been seen. Each of the horizontal, aerofoil-shaped Fins measures an incredible 1220mm in width and is capable of free-spanning up to 9 metres.
While the size and quantity of the Fins is impressive, it may also be surprising to find that each Fin has been custom engineered, with a perforated aluminium skin and connecting components that allow the Fins to be gently rotated through 60 degrees.
To achieve the required mechanical and structural performance, Levolux designed a custom support system, similar to that previously employed on Building 6. This comprises concrete encased steel columns at low level, cast aluminium column bases, extruded aluminium columns and stainless steel bracing members. The entire louvre assembly is tied back to the façade using ‘V’ shaped brackets, set at alternate floor levels. This allows the structure to be lightweight, efficient and visually unobtrusive.
To power the horizontal aerofoil-shaped Fins on each elevation, Levolux incorporated a series of linear motors and an intelligent control system. Fins are quietly rotated to the optimum angle, using Programmable Logic Controllers (PLC) to compensate for orientation (south, east or west) and sun position, while responding to sensors that detect changes in daylight, temperature and wind speed.
Levolux also installed its external I-Blade Walkway system on three elevations, above an undercroft car park. The 1.2 metre wide walkway comprises 28 panels, divided into four sections which allow access to the façade at ground floor level. The open structure of the I-Blade walkway aids natural ventilation of the building at low level.
Internally, Levolux fitted 912 manually operated Venetian Blinds, featuring 80mm wide, solid roll-formed slats. Each blind can be raised, lowered or tilted using a crank handle to satisfy light and glare control requirements.
In addition, Levolux also installed 12 of its 780 motorised Roller Blinds at high level on the ground floor, within the double height reception area. The Blinds, which can be raised or lowered at the click of a switch, feature a custom head box and cover plate. The inclusion of 2mm guide wires helps to keep the 2.9 metre wide fabric ripple-free and perfectly aligned. A cool, grey fabric allows excellent control of glare levels while allowing daylight to filter through.
All extruded aluminium Fins and walkway components are finished in an attractive silver anodised finish, while supporting components have been given a durable metallic silver polyester powder coating.
All Levolux systems, whether they be motorised ‘Super Louvres’ or Roller Blinds, are backed with the company’s design, manufacture and installation package.
More than 15 years in the making, Chiswick Park now boasts 12 state-of-the-art office buildings, all designed to deliver exceptional energy efficiency, without compromise. Famous for its ‘Enjoy Work’ brand, Chiswick Park creates a sustainable workplace which encourages greater productivity. Some of its success can be attributed to the application of efficient Solar Shading, which is perhaps most evident with the solution provided by Levolux for Building 7.