黑洞社区

Bracknell鈥檚 reputation as a grey town of decaying brutalist concrete architecture is about to change. The Berkshire new town was built in the 1950s to give those from bombed-out London estates the opportunity to embrace a new modernist future outside of the city鈥檚 green belt. Sixty years after its formation, however, the commercial heart of the town was in decline, its shops deserted by retailers and shoppers alike. Now, a new 拢750m urban regeneration scheme, one of the largest in the UK, is set to transform the town.

Under the initiative, Bracknell town centre is being comprehensively demolished and rebuilt - the first post-war new town to undergo such radical remodelling.

Fundamental to the success of the scheme is a 拢240m, 580,000ft2 retail and leisure development known as The Lexicon. This ambitious scheme, now nearly finished, will regenerate over 60% of the town鈥檚 centre. Almost all buildings north of the high street (as far as the ring road) have been demolished and in their place contractor Mace is building shops and restaurants and even a new street.

It is a giant scheme which, it is hoped, will revitalise the town centre and bring life back to the town鈥檚 commercial heart. The challenge for Mace is not so much the scale of the project but the need for it to rebuild over half of the town centre while allowing the remaining shops and cafes continue to trade. 鈥淭his project is all about keeping the public realm open while getting materials to the site,鈥� says Carl Wright, project director at Mace.

Works to rebuild the area of town north of the high street are nearing completion. New retail units line wide, welcoming pedestrian streets where some of the site鈥檚 120 paving operatives are busy laying the last few sections of granite paving. High above, another team is at work slotting the last of the diamond-shaped glazing panels into the lattice of glulam-trusses that cover areas of the streets to create elegant covered arcades.

And inside the retail units, the retailer鈥檚 fit-out contractors are already hard at work; the rattle of concrete breakers fills the air outside of what will soon be a new Boots store as contractors remove a section of ground floor slab to enable construction of a lift pit.

Meanwhile south of the high street, in what remains of the old town centre, another team of paving operatives is at work. Screened from the shoppers by a cordon of Heras fencing, this team is replacing the street鈥檚 original, chewing-gum engrained brick pavements with unblemished granite pavers that match those carpeting the pristine new streets north of the high street, linking the old to the new. Contractor Knight Harwood has been replacing the tired facades of the stores that line the streets in this area of town to refresh their appearance in time for the redevelopment鈥檚 grand opening in September.

A long time coming

For Bracknell鈥檚 residents the opening will signal the end of the 20-year saga to breathe new life into the centre of their town. Redevelopment was first mooted in the 1990s, with competing proposals for a much larger retail development which would have put Bracknell in competition for retailers and shoppers with the nearby town of Reading. These ambitious proposals were, however, rejected by John Prescott, the then environment secretary, on the basis that they were too large in scale for the region.

The current more modest scheme was masterplanned by BDP. The architect was brought on board in 2006 by developer Bracknell Regeneration Partnership, a joint venture between the formerly competing developers of Legal & General Capital and Schroder UK Real Estate Fund, which are working in collaboration with Bracknell Forest Council. 鈥淭his scheme is not so big that it is unwieldy in terms of its letting prospects,鈥� says Simon Russian, head of development for Legal & General.

In addition to its reduced scale, BDP鈥檚 design is also significant in that it has been conceived to bring life to the streets of Bracknell. It is what Russian calls 鈥渁n open street scheme鈥� as opposed to a gated Westfield-like shopping centre, which is closed off from the public at night.

鈥淭he design suited us because the new scheme knitted in with the existing developments that we owned in the town and which are being upgraded to deliver a cohesive scheme,鈥� explains Russian.

One of the few buildings to have been retained in the BDP scheme is the Grade II listed Bull pub, parts of which date back to 14th century. The timbered building is now the focus of a new town square. 鈥淲e鈥檝e made it the centrepiece of the scheme because the building is so different to anything else in Bracknell,鈥� Russian says.

To distinguish the new scheme from its homogenous predecessor, BDP has designed it as a series of eight linked blocks. The blocks are further differentiated by variations in their colour and style of cladding. 鈥淎ll eight blocks are designed to look different so that the scheme appears as a high street of different buildings rather than as a uniform shopping centre,鈥� explains Russian.

The design also mixes retail outlets with cafes, bars and restaurants to deliver what Russian terms 鈥渁n enhanced shopping experience鈥�. It is a combination he hopes will attract new visitors to the town centre at lunchtimes and in the evenings. 鈥淪ome 25,000 people work in the town, mostly on out-of-town office and retail estates, but very few choose to shop in Bracknell or spend their lunchtimes here - that is one of the big targets for us,鈥� he says. The shops and restaurants will also be open later to help develop an evening economy. 鈥淐urrently all the shops shut at 5.30pm and Bracknell becomes a ghost town, but soon all the shops will stay open until eight,鈥� Russian says.

BDP鈥檚 scheme was approved by the planners in 2007, just as the recession that followed the 2007 financial crisis hit. The redevelopment was put on hold as a result and the design reassessed. Rather than commit to the major redevelopment, the developer decided instead to build a new standalone Waitrose supermarket to the west of the main development under an initial phase (Waitrose is the biggest employer in Bracknell). 鈥淚t was the first new building in the town centre in 25 years and it gave people and the market confidence that the scheme was going to happen,鈥� says Russian.

The second phase of the scheme is being built by Mace under a design and build contract. The contractor tendered for the project in 2013 and signed the contract to build The Lexicon in 2015. This gave the contractor just 24 months in which to construct 1 million ft² of new retail outlets.

By the time Mace had been appointed, the area of town north of the high street had already been demolished and the site cleared. The contractor鈥檚 first task was to level the site, which has a 7.5m fall from the high street in the south to the ring road in the north. It then installed 750 piles, cast the pile caps and installed a concrete ground floor slab before erection of the shops鈥� structural steel frame could commence. 鈥淚t鈥檚 simple, low-tech construction that works,鈥� says Mace project director Carl Wright.

The key to the scheme opening on time was to ensure the retail units have been completed in time to allow the retailers鈥� fit-out teams early access. 鈥淥n a retail scheme you have sectional completions, the first of which will be the anchor units, which are occupied by Marks & Spencer and Fenwick, because these are the biggest units at 80,000ft² and they have the longest fit-out period; these will be followed by a succession of completions primarily geared to retailers鈥� fit-out periods,鈥� he says. 鈥淥nce you鈥檝e started on the anchors, the rest of the retail construction follows on behind.鈥�

Site restrictions

One of the biggest challenges Mace had to overcome with this scheme was a lack of storage. 鈥淎lthough the site has a big footprint, we had multiple workfaces which meant there was very little space available for the on-site storage of materials,鈥� says Wright. With no off-site storage facilities available, material deliveries were arranged on a just-in-time basis.

Site restrictions influenced Mace鈥檚 construction choice for the development鈥檚 multi-storey car park, which is situated between the two anchor stores. This is the largest single element of the redevelopment. Initially it was to be built from concrete poured in-situ, but Mace decided that, given the site鈥檚 restrictions, it would be easier and simpler to build it using off-site manufactured precast concrete sections. 鈥淧recast concrete worked well because of the repetition in the design,鈥� explains Wright.

Alongside construction of the new-build elements north of the high street, the scheme includes regeneration of the remnants of the existing town centre to the south. 鈥淲e had to upgrade the existing town centre to ensure that we delivered a cohesive regeneration scheme,鈥� says Legal & General鈥檚 Russian.

Mace is responsible for the works in this area too. In Braccan Walk a new block of shops has been created by extending the existing structure to form larger stores. The works involved extending the floor plates of several existing stores onto what was originally an open square, known as Charles Square. Mace鈥檚 Wright says this was a particularly challenging aspect of the project because it involved the refurbishment of existing structures, some 鈥渢ricky鈥� demolition and extensive temporary works to hold up the structures while the floor areas were extended.

Leading on to Braccan Walk is Stanley Walk. Here the addition of a PTFE roof means that the shops鈥� old concrete canopies, built to shelter shoppers from the elements, are no longer needed. When 黑洞社区 visited, the first of the canopies was due to be removed that evening. Wright explains that removal has to take place in the limited time window between the shops closing at 6pm and the 10pm construction curfew imposed because of the proximity of the nearby Grange Hotel. Scaffold supporting columns had already been erected beneath the canopy in preparation for the evening鈥檚 work. 鈥淲e won鈥檛 really know what we鈥檙e dealing with [in removing the canopy] until we make a start so we鈥檝e had to put in a substantial support - hopefully it will be what we鈥檙e expecting,鈥� says Wright.

Removal of the canopies will be followed by replacement of the shops鈥� facades to help revitalise the appearance of the retail outlets in this area of town to stop them looking like the poor relations of the swanky new outlets north of the high street. The facade replacement is one of the final tasks as the contractors prepares to leave the site. Most of the development has achieved practical completion with the remaining elements due to complete in the next few weeks. After this date retailers will have three months in which to fit-out their stores before the grand opening on 7 September 2017 and the completion of Bracknell鈥檚 transformation.