RIDI Lighting Ltd could be on a winner with BT after becoming the only company able to design and deliver a light package to fit the company's 'Workstyle 2000' guidelines.

The landmark project at the refurbishment of the four-storey BT Friary House in Southampton is currently being accessed by BT Property (a division of BT) for the company's future building designs. BT's 'Workstyle 2000' guidelines dictate all office environments should be atmospheric combined with Cat 2 display screen equipment lighting.

To meet these requirements RIDI supplied BT with slimline T5 luminaires, complete with Tridonic's energy efficient Dimmable Excel ballast and Setsquare's ALD sensors that fitted neatly into the building's unusual ceilings and shallow void areas. This is the first time Tridonic has supplied such ballasts into a 600x600 modular luminaire.

More than 900 staff on floors one, two and three, working in BT's call centre or network management departments can work in spacious well lit environments where bright daylight can be brought in utilised and artificial lighting dimmed to save energy. Setsquare's sensors send messages to the ballasts informing them when and by how much the T5 category luminaires should be dimmed. These luminaires provided exceptional uniformity with a pre set level of 400 lux.

To create an all round effect and ambience RIDI also supplied BT with downlighters that served to create a feeling of open space by softly lighting the curved walls that surround the central core and utility areas of the open plan floors. The downlighters in with decor glass, situated in the reception area and Bistro on the ground floor also create a warm relaxed atmosphere for visitors and staff alike. To create a different emphasis, meeting rooms were finished off with louvred Cat 2 downlighters.

Peter North from BT commented: "RIDI provided us with a well built product that met all our requirements at the right price. The company also kept all its promises which is equally important. I would certainly recommend RIDI for future BT projects."

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