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鈥業sn鈥檛 all this a bit fancy for the Co-op?鈥� So spoke a Cabe commissioner during a planning-stage design review for the group鈥檚 new Manchester headquarters. The quip probably says more about Cabe than it does about the retail collective founded in nearby Rochdale in 1844 and now the world鈥檚 largest co-operative consumer organisation. But it is useful nonetheless for highlighting how the Co-op鈥檚 new building both challenges popular perceptions of the brand and projects the principles on which that brand is based.

Sustainability, for example - a cornerstone of the Co-op鈥檚 commercial ethics - has been energetically embedded into the architecture of the new building in a way that extends far beyond the shallow compliance that is still the mark of much environmental design. A slew of energy-efficient features, ranging from a trio of giant earth tubes to a ventilated double-skin glass facade, has helped the Co-op achieve the highest BREEAM 鈥淥utstanding鈥� score of any UK office.

It is this enlightened environmental philosophy, combined with a distinctive architectural form that cleverly reinterprets the British architectural tradition of commercial symbolism, that identifies the Co-op HQ as a significant milestone in the evolution of the office workplace.

A rich heritage

The 拢100m building has been designed by 3DReid and is the first and anchor phase of a wider 4 million ft2 redevelopment of Co-op owned land. The masterplan鈥檚 title, NoMa - like the short-lived and egregiously abbreviated NoHo development in London鈥檚 Fitzrovia - indicates its position on the northern rim of Manchester city centre.

When the building officially opens as One Angel Square next year, its 500,000ft2 will provide a single base for the organisation鈥檚 3,500 office employees for the first time. Currently, staff are disparately housed in an eight-building campus located opposite the new building. Despite being severed from each other by a sprawling, soon to be narrowed, four-lane dual carriageway, this listed cluster of buildings formed the conceptual starting point for the new HQ鈥檚 design.

The most prominent building on the original campus is the 25-storey, 118m-high CIS Tower, Manchester鈥檚 second tallest building and briefly the UK鈥檚 tallest when it was completed in 1962. While this dour, angular slab now appears to be yet another example of insensitive sixties urbanism, when it was conceived its clean lines and simple geometries were proudly affiliated with the chic international style perpetuated by the likes of Mies van der Rohe.

Equally, the earlier Co-op HQ next to the CIS Tower is a virtuoso study in the layered horizontality and dramatic massing of thirties Dutch Dudok-style modernism. For a former 19th-century slum neighbourhood once dubbed by Friedrich Engels as 鈥渉ell on earth鈥�, this represents a remarkable architectural heritage.

But, as 3DReid divisional director Mike Hitchmough explains, it is one that did not arise by accident. 鈥淗istorically, the Co-op has always wanted its buildings to be the best possible examples of the architectural style of the day and for them to make a positive civic contribution to an area that has known difficult times in the past. The new HQ is merely the latest chapter in this long, ongoing sequence.鈥�

However, while the new and old buildings may be historically linked by civic altruism and architectural prestige, aesthetically the new building is a radical breach with the past. A first glance reveals a modern glazed three-sided double skin office that curves gently outwards before the upper third is sharply thrust backwards like a diagonally sliced egg.

鈥淭he ribbed, weaved basket quality to the outer skin is partially inspired by the striped vertical and horizontal banding and modulation on the facade of the CIS Tower,鈥� he says. But the overriding visual analogy is a corporate one. 鈥淭he Co-op symbol is a beehive and this is the main inspiration for the building鈥檚 exterior form.鈥�

Enter the beehive

This beehive concept, with its intrinsic premise of strength in numbers, is also intended as a physical representation of the Co-op鈥檚 values, and is strongly evident within the building鈥檚 interior. After passing through the main entrance, the visitor is plunged into a soaring atrium that extends the full height of the building. The cellular structure of the white-painted concrete columns and balconies that enclose the atrium on all sides, as well as its hexagonal shape, immediately recalls the honeycomb aesthetic first suggested by the exterior.

Most impressive of all is the enormous amount of natural daylight present. Light not only pours in through the glass 鈥渆yelid鈥� ceiling but over the balconies themselves. This is because, with the exception of the three cores on alternate sides of the atrium, (accentuated by oak rather than white balconies), every balcony fronts onto entirely open-plan offices on the lower nine floors, allowing light from the external wall to permeate into the heart of the building.

鈥淣o desk is situated more than 7m from a window,鈥� says Hitchmough, 鈥渁nd the light levels within the area are so high - sometimes higher than average Manchester daylight levels - that the balcony edges constitute a window. Also, although most architects like exposed concrete, most people don鈥檛. So we painted the concrete white, which not only softens the character of the space but enables the artificial lighting鈥檚 lux levels to be reduced from 550 to 300, representing a significant cost and energy saving. Finally, the white surfaces create something of a blank canvas which the workers will be able to personalise over time to evolve the identity of their workplace.鈥�

Atriums are the ubiquitous and frequently insipid corporate insignia of every large modern office. But this one is a stirring and emphatic metaphor for the democratic, collaborative principles that drive the Co-op鈥檚 corporate ideology.

This cavernous central volume is afforded spatial and social primacy at every possible instance. The restaurant on the 12th floor looks down on it. Meeting rooms face onto it. The stepped terraces clustered around the staggered rooftop prow radiate from it. It provides myriad oblique and direct views into workspaces from virtually every corner of the building. Critically, it also preserves panoramic views through the building out towards the city - Hitchmough points out that the height of office cabinets and even the balcony baluster profiles were determined so as to not impede workers鈥� views even when sitting at desks. It is the atrium where the Co-op plans to hold its AGMs.

Environmentally, it even acts as a giant extract for displacement air that moves up the building.

The office spaces themselves continue the atrium鈥檚 theme of transparent equanimity by being as open and uncluttered as possible. Structurally this meant expansive column-free spans of up to 16.5m and Hitchmough clearly revelled in the liberation of dealing with clients who insisted on a structural frame that actually necessitated fewer rather than more columns. Double-height open 鈥渨inter gardens鈥� are also cut into the floorplate on alternate floors on the opposite side of the core from the atrium.

Hitchmough adds that the building鈥檚 core, ceiling and window configurations have been designed to accommodate future floorplate subdivision if necessary. 鈥淥bviously there鈥檚 a level of freedom and certainty present when designing for an owner-occupier that doesn鈥檛 apply to speculative development. But the building still represents a significant commercial investment for the Co-op, which they may one day wish to sell and occupy as tenants. The challenge was to make the building bespoke but not too bespoke.鈥�

But does it work?

Hitchmough summarises his practice鈥檚 design approach to the Co-op as one marked by flexibility, resilience and sustainability. 鈥淭here鈥檚 no such thing as timeless architecture,鈥� he maintains. 鈥淏ut this building is not a fashion statement, it鈥檚 an investment. By using a sober palette
of external materials - bronze, glass and concrete - we鈥檙e hopefully creating a building that鈥檚 both memorable and enduring.鈥�

The Co-op HQ certainly represents a dynamic and expressive projection of the organisation鈥檚 principles, enriching the architectural heritage it established on the same site generations ago. It also marks a spirited extension of the once great British civic tradition - most evident in the ornate 19th-century mercantile palaces of cities like Manchester, London and Leeds 鈥� of buildings that form a carefully scripted symbolic representation of the corporate ideology of their owners.

Furthermore, for all the deference to its predecessor across the road, this is clearly a defiant piece of object architecture; it is designed to soar in isolation rather than to merge into context, and can trace a lineage from such projects as Ralph Erskine鈥檚 Hammersmith Ark and Norman Foster鈥檚 Greater London 好色先生TV.

Although this autonomous approach and the figurative literalism of the design may both have been grounds for criticism, the building is ultimately redeemed and given character by the strength of its aesthetic, environmental and civic convictions, both inside and out. While
its swirling facade and playful rooftop massing make exciting contributions to the city鈥檚 streetscape and skyline, the exterior is still controlled enough to comprise a discernible top, middle and bottom, making a potentially chaotic composition comprehensible. As with the 鈥渮iggurat鈥� rooftop terraces and the chasm-like atrium, this is a key example of how the building essentially packages radical gestures in a human and empathetic way.

For some, including perhaps our aforementioned Cabe commissioner, the Co-op is considered a rather boring brand, a safe pair of hands. Well, what may have been dismissed as prudish before our current economic maelstrom is increasingly valued as prudent. And now the Co-op鈥檚 new HQ is a perfect metaphor for the progressive reinvention on which the brand was founded.