Walkie Talkie gardens, City of London

Photo of Walkie Talkie gardens

Overview:
One of the most distinctive additions to the City of London skyline is the tower at 20 Fenchurch Street, affectionately nicknamed the Walkie Talkie. Beneath its organic roof form is a 35th floor sky garden, which accommodates a series of bars and restaurants, and is open to the public. The roof garden is substantially enclosed, providing stunning views for visitors. A major challenge for the glazed space was ensuring suitable ventilation to eliminate overheating from solar gain, without allowing high winds to impact on the enjoyment of the space. Adexsi was called on to design, supply, install and commission a ventilation system, taking account of the need not to spoil the look of the high profile building. As well as providing ventilation on a daily basis, the system also had to deploy in an alternative mode, in case of fire, to provide adequate smoke ventilation.
Outcome:
The solution is a Veriflow system with a series of low level and high level dampers, which operate unseen behind the building’s cladding fins. The dampers are located behind the exterior fins installed by cladding specialist Josef Gartner, and operate in a gap of just 180mm. A Vericom control system, linked to the project’s building management system, ensures the appropriate volume of low and high level vents are open through the day, so that an adequate cooling airflow is maintained in all weathers.

30 Berkeley Square, Mayfair

Photo of 30 Berkeley Square, Mayfair

Overview:
This prestigious central London office block, originally constructed in the 1990s, was given a subtle but complete refurbishment to bring it up to date as the new headquarters for international auctioneers Phillips. New double height retail space was created at ground level, while a new sixth and seventh floor created offices with roof terraces providing stunning views across Mayfair. Additional space was created by relocating rooftop plant to the basement. Services contractor Michael J Lonsdale asked Adexsi to help install suitable smoke extract and ventilation equipment to suit the new building layout.
Outcome:
Working on a constrained site that required close co-ordination with other teams, Adexsi was involved in delivering mechanical extract and ensuring the integrity of firefighting lobbies in the building. The installation included axial fans on the roof and in the basement, Hexacoif ventilators on the roof to provide smoke clearance, and standby systems that ensure building users are always safe.

One St Peters Square (OSPS)

Photo of St Peter Square Manchester

Overview:
One St Peter’s Square (OSPS) Manchester, formerly occupied by Elisabeth House has recently been re-developed into a 13-storey office and retail/restaurant complex set within an important conservation area with a strong focus upon the local community and the environment.
To meet these demands the project – which utilised lean design and sustainable construction solutions – required mechanical services that met the buildings construction objectives. Adexsi were chosen for the provision of ventilation and life safety systems due to their proven track record in this area combined with a range of products best suited to the projects aesthetic and environmental needs.
Outcome:
Working closely with the Building Control and Fire Safety authorities and utilizing the latest CFD design methods Adexsi designed, supplied and installed a range of systems to help with the builidng comfort levels, protect building occupants and assist the fire authorities in the event of a fire.
The systems included an induction car park ventilation system to the requirements of BS7345 part 7 that provides both smoke and general day to day ventilation, a roof mounted smoke extract system utilising Certilam low profile aluminium louvered smoke ventilators tested to EN12101-2 and a pressure controlled mechanical extract system to the fire fighting lobbies meeting the requirements of BS9999.

Admiral Insurance Building – Newport

Admiral Offices - Newport, South Wales.

Overview:
Admiral’s is one of the largest car insurance providers in the UK. It is still based in South Wales, and is one of the largest employers in the region, with over 5,000 members of staff. As such a large and prestigious company Admiral Insurance’s recent relocation to Newport City centre required the extensive regeneration of 80,000sqft of office space.
The regeneration of an existing building – which included the construction of an architecturally important atrium – required the integration of a number of complex and important natural ventilation and life safety mechanical smoke ventilation systems, and following a stringent selection process Adexsi were chosen to design, supply and install these services.
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New Bodleian Library – Oxford

Photo of New Bodleian Library – Oxford

Overview:
Established in 1602, the Bodleian Library is one of the oldest libraries in Europe and is Britain’s second largest, containing over 11 million works. As such an important building the selection of contractors to work upon its redevelopment was meticulous and Adexsi was chosen based upon its track record of work upon architecturally important buildings.
As part of a larger restoration and renovation of the New Bodleian library building, Adexsi was contracted to design and install a number of ventilation systems; including a natural smoke shaft ventilation and damper control systems with Certilam aluminium louvered smoke ventilators, fully tested to EN12101-2 for smoke ventilation, and powered natural/high temperature basement car park systems for smoke and general ventilation.
Outcome:
Careful integration of aesthetically pleasing equipment for natural and powered smoke ventilation meant Adexsi was able to meet architectural restrictions whilst providing the required services and in addition save the client time and money during the installation process and in future running costs. Energy costs were further reduced through the use of modulating dampers with touch screen control which provide a comfortable environment to the library’s users with minimum energy use