BRICK BULLETIN - The Brick Development Association
Transcription
BRICK BULLETIN - The Brick Development Association
BRICK Viewpoint: Simply edible brickwork 6 11 Project: Dublin Corporation housing Cannon can Rebuilding the Tate Celebrating the Jubilee 19 Project: Eclectic influences at Corpus Christi, Tring Project: Engineering diversity at Strathclyde 28 UK £5.00 COVER Lanchester Library, Coventry University Summer 2001 BRICK Summer 2001 UPDATE 3-5 Editor Sue Duncan Technical editor Michael Hammett Co-ordinating editor Ruth Slavid The Brick Awards Engineering update The Guild of Bricklayers competitions take off New masonry code of practice Retirement of Michael Hammett New senior architect for BDA Brickmaking video published Commendation for ‘BDA Guide to Successful Brickwork’ VIEWPOINT 6-7 No voussoirs in Vegas, but Sutherland Lyall recalls delicious brickwork memories closer to home PROJECT PROFILES 8-10 11-13 14-15 16-18 ISSN: 0307-9325 19-21 Published by 22-23 151 Rosebery Avenue London EC1R 4GB 24-25 Printer Cradley Print 26-27 28-29 Public building Coventry’s new university library breaks new ground in energy efficiency Housing How Dublin Corporation is preserving city-centre living Commercial building Clarke House introduces new order in redbrick offices Housing Blackwall Basin stands up to its neighbours Religious building Solid brickwork, solid craftsmanship at Corpus Christi, Tring Housing Solaria on the Severn at Tewkesbury Structural brickwork The problems of a difficult site elegantly resolved at Monmouth Refurbishment Ikon Gallery deploys craft skills to create cuttingedge art showcase Laboratory building Blue and red bricks engineer harmony at Strathclyde University TECHNICAL NOTES 30-31 Specialist CAD services on offer from brickmakers BDA MEMBERS 32 2 The Brick Development Association Limited Woodside House Winkfield Windsor Berks SL4 2DX Tel 01344 885651 Fax 01344 890129 E-mail brick@brick.org.uk Website www.brick.org.uk Contact details for BDA member companies S ome time ago, the BDA’s membership was enlarged by the welcome addition of all the clay brick companies in the Irish Republic, which has a rich and diverse tradition of building in brick. So it is a real pleasure to see the role of brick architecture in Ireland reflected in this issue of Brick Bulletin with the feature on social housing designed by Dublin Corporation Architects Department. We look forward to showcasing more projects from Ireland in the future. Long may its construction boom continue. Two Irish schemes were finalists in the 2000 Brick Awards. Some of these impressive projects have already appeared in Brick Bulletin; others are explored in this number. The quality and diversity of projects were a testament to the creativity and craftsmanship of our building professionals – aided by the products and, often, by the specialist services available from BDA members. In this issue we give a survey of member companies’ CAD facilities, invaluable for detailing and creating special features. How exhilarating it must have been for the Ikon Gallery team to bring back to life that derelict Victorian school. The gentle cleaning of the fabric, the painstaking recreation of original features and a wonderful new facility for Birmingham. It’s interesting to note that the Ikon’s original clock tower helped ventilation – a principle exploited to the full 155 years on in Coventry University’s Lanchester Library, whose tall cliffs of brickwork bring new drama to the city. There’s drama on a smaller scale at the minimalist Clarke House in Egham and in the glorious interior of Corpus Christi Church in Tring. Indeed, all the projects featured share this quality. It all says to me that brick can challenge, stimulate and excite. It is not the cosy option. Con Lenan, chief executive, BDA BRICK AWARDS NIGHT 1 2 1. John O’Grady of contractor Totty Group, Jennifer Jeffries and Elaine Toogood of Short and Associates take the Building of the Year Award. Right of picture, BDA Chairman Richard Manning 2. BDP’s Alan Jones (right) receives the Structural Award from judge Bryn Bir d 3. Architect Anthony Delarue (right) accepts the Craftsmanship Award from judge Bob Baldwin 4. Guests at the Awards dinner 4 3 The Brick Awards 2000 were no exception to a well-established tradition of excellence and were presented in some style at the Café Royal at a gala dinner attended by 400 guests. Congratulations to the team behind the Building of the Year – Coventry University’s new library – (one of several shortlisted schemes featured in this issue). And thanks to the distinguished panel of assessors. BUILDING OF THE YEAR Coventry University Lanchester Library & Resource Centre (See article p8) Architect: Short and Associates Bricks: Marshalls Clay Products CATEGORY WINNERS CRAFTSMANSHIP Church of Corpus Christi, Tring (See article p19) Architect: Anthony Delarue Associates Brickwork: E W Rayment Bricks: Sussex Brick, Charnwood Forest Brick, Chelwood Brick, Dunton Brick PUBLIC BUILDING Coventry University Lanchester Library & Resource Centre Architect: Short and Associates Bricks: Marshalls Clay Products COMMERCIAL BUILDING Canon (UK) Headquarters, Reigate Architect: David Richmond & Partners Bricks: Ibstock Brick PRIVATE HOUSING Blackwall Basin, London E14 (See article p16) Architect: David Richmond & Partners Bricks: Ambion Brick, Ibstock Brick PUBLIC HOUSING Beveridge Hall, Queens University, Belfast Architect: Roger McMichael Bricks: Baggeridge Brick SINGLE HOUSE Ballihoo, Caversham Architect: Adrian James Bricks: Bovingdon Brick STRUCTURAL BRICKWORK World of Glass, St Helens Architect: Geoffrey Reid Associates Engineer: BDP Bricks: Ibstock Brick LANDSCAPE Canon (UK) Headquarters, Reigate Landscape Design: Holden Liversedge Bricks: Baggeridge Brick, Ibstock Brick REFURBISHMENT The Ikon Gallery (See article p26 ) Architect: Levitt Bernstein Bricks: Ibstock Brick EXPORT Tallaght Regional Hospital, Republic of Ireland Architect: Robinson Keefe & Devane Bricks: Ambion Brick Panel of Assessors Professor Tony Monk (Chairman) Professor of Architecture, University of Luton Dr Sutherland Lyall Architectural writer Bob Baldwin President of the Guild of Bricklayers Bryn Bird Founder partner: Whitby Bird and Partners, engineers Eileen Thomas Planning Officer, Epsom & Ewell Borough Council Terry Anderson Landscape architect BRICK AWARDS 2001 ● Entry deadline: 13 July ● Awards dinner: 14 November ● Forms from: Awards Office, BDA, or www.brick.org.uk or from your brick representative 3 BDA Reader in Brickwork Masonry Dr Pav Bingel was appointed from October 2000 by Leeds Metropolitan University, with support from BDA, as The Brick Development Association Reader in Brickwork Masonry. Dr Bingel is senior lecturer in civil engineering within the School of the Built Environment at LMU. An important part of his workload focuses on brickwork research and innovation issues. This currently includes collaborative project work on clay brickwork movement characteristics and on the development of advanced design technologies for brickwork cladding to framed building structures. An example of this is the experimental full-height brick cladding panels to the seven-storey concreteframed test building at BRE Cardington. Brick wind-shielding As part of its contribution towards the pilot six-storey brick-clad timberframed building at the BRE Cardington Large Building Test Facility, BDA has recently completed a Department of the Environment, Transport and the Regions Partners in Innovation contract investigating the wind-shielding effect of brickwork cladding on timberframed buildings. The current codified design practice for timber-framed building structures accepts the principle of wind load shielding to walling elevations afforded by the brick cladding, but practical use of this wind-shielding effect to afford economies and improvements in overall design efficiency is currently limited. Completion of this project work will help to fill gaps in knowledge and should allow the full effect of brickwork wind-shielding to be taken into account in future design code revisions as well as in other design guidance documentation. In measurements taken from the project work, the brickwork cladding was found to be shielding the timber frame by an amount in excess of onethird of the total lateral load applied to the walling of the test buildings. Another finding was that the out-ofplane stiffness of brick-clad timberframed walls is considerably higher than current structural calculation procedures would indicate. The project was carried out jointly by BDA and Ceram Building Technology. Masonry Code of Practice An amended version of BS 5628: Part 3: 2000 ‘Code of Practice for the Use of Masonry: Structural use of reinforced and prestressed masonry’ was recently published by the British Standards Institution and copies are now available. Reinforced brickwork freestanding wall at the Gillingham Northern Link Relief Road Masonry support systems – best practice sheets Two new best practice information sheets have been published for the specification and site use of stainless-steel masonry support systems. These systems typically consist of shelf and bracket angles, commonly used methods for the storey-height support of brickwork and other masonry from framed building structures. The two sheets, SCI-P297 and SCI-P298, give guidance for contractors and specifiers respectively. Both have been issued by the Masonry Support Information Group and are available from the Steel Construction Institute at Silwood Park, Ascot, Berks (tel: 01344 623345). 4 London Regional Senior winner, Craig Greenleaf of Reading College of Arts & Design Taking up the trowel This spring, students at construction colleges across the county competed in the Guild of Bricklayers Competitions regional heats, where demanding test pieces, built against the clock, called for quality of the highest order. Winners progress to the Skill Build National finals at Ballymena in June, with the prospect of going for gold at the 2003 international Youth Skills Olympics. Substantial sponsorship comes from many member companies and this year there is the added support of a new cross-industry action group – the Better Brickwork Alliance. Reinvigorating and increasing support for the competitions is one of several BBA initiatives to expand the skills base by encouraging new entrants to a career in bricklaying. Michael Hammett retires In April, BDA senior architect Michael Hammett retired after 21 years with the association. To say that his retirement will leave a yawning gap is no slight on his colleagues since Mike’s knowledge of, enthusiasm for and energetic promotion of all ‘matters brick’ is awesome. It would be hard to cite any area – technical, marketing, education – that has not benefited from his expertise, invariably shared in the most generous manner. Mike joined BDA in 1979, having worked in private practice and then with Wycombe District Council, where he had been a principal architect. What is not widely known is that architecture was in fact a career change. In the late 1950s, Mike was a biologist working for MAFF on search-and-destroy missions for insect pests. Inspired by the work of Arne Jacobsen and Alvar Aalto and encouraged by his wife Moya, he changed direction, studied architecture at the Northern Polytechnic (1959-64) and left entomology to others. He joined BDA’s education team, whose remit included every sector of the construction industry – practising and student architects, contractors, bricklayers and construction colleges, distributors and brickmakers. His duties included lecturing up and down the land. Over the years, technical committees and working parties too numerous to mention have benefited from his participation – notably the BSI committee responsible for masonry codes. Add to that a wide range of technical publications, press articles and his guiding editorial hand in Brick Bulletin – all underline the scope of his contribution. Mike’s retirement will not mean a complete break with the world of brick and we look forward to his continuing contributions to Brick Bulletin, which he has promised to add to his postretirement pursuits. Michael Driver joins the team This 28-minute educational video programme from the University of the West of England, made with the active participation of the BDA, is now available. It explores all aspects of brick manufacture in the UK, including underlying geology and clay winning, the process, forming, setting, kiln technology and related issues such as environmental impact. In an industry rich in diversity, traditional handforming and open clamp firing still have a valued place alongside the highvolume, automated factories typical of today’s high-tech industry. All are covered. This is a valuable educational tool for anyone, especially those engaged in brickwork specification, construction and distribution. For price and availability, call BDA. He comes to BDA with wide experience of educational and practice roles. Since 1977, he has taught at Canterbury School of Architecture, concurrently running a practice undertaking educational, commercial and residential work. His interest in construction and the building process prompted a specialisation in self-build. Michael graduated from Cambridge and worked in private practice with David Roberts and Geoffrey Clarke in Cambridge. He was a partner in Cruikshank & Seward Architects, Manchester, before moving into architectural education. Michael Driver MA, DipArch, RIBA joined the BDA as senior architect earlier this year, succeeding Michael Hammett, who retired in April. Like his predecessor, Michael has a wide brief – to head BDA’s team of architects, helping educate all sectors of the construction industry in the potential of brickwork, promoting best practice in its use; to provide guidance externally and to member companies; to contribute to publications; to represent the association on external standards committees; and to comment on proposed legislation. BOOK REVIEW On behalf of BDA, Michael Hammett receives the certificate from Chris Blythe, chief executive of CIoB Bricks and brickmaking ‘The hallmark of this book is its clarity. The text and illustrations provide crystal clear guidance on the science and art of brickwork. The book conveys a sense of the art of the possible and illustrates some brickwork solutions that are inspirational, functional and elegant. Now that’s success.’ That’s the critical review of The BDA Guide to Successful Brick wo rk in the Chartered Institute of Building Literary Awards, presented in London in March. This indispensable guide to getting brickwork right won the Highly Commended certificate in the Building Process category. Published for BDA by Arnold (now Butterworth-Heinemann), this is essential reading for anyone involved with brickwork construction and specification. Price £ 16.99 plus £3.50 p&p from BDA. 5 SUTHERLAND LYALL Simply edible Dr Sutherland Lyall is a freelance journalist and author of a dozen books on architecture, landscape and art. He began in journalism as buildings editor of The Architects’ Journal, has been editor of several magazines including Building Design and is editorial adviser to Interior Design and Building Photographs 1. Beechwood Hotel 2. The Circle 3. Wall, Suffolk 4. Blaise Hamlet 5. Leigh, Kent 6. Judge Instiitute Photographers 1.John Mills 2. FWD 3. Philip Bier 4. National Trust Photographic Library/John Blake 5. Nigel Spreadbury 6. Martine Hamilton Knight 6 1 W e were on the Grand Canal in one of those paper-sharp, black-painted boats, the sky above far bluer than anything Constable had ever painted. Perfect. I had even promised the gondolier $5 if he promised not to sing. But by the second bridge it had all turned to ashes. It was the brickwork that did it. As the house of cards collapsed, I had to recognise that the sky was blue because it was indeed painted – that, although these were real Venetian gondolas, the Grand Canal was not in Venice but on the first floor of The Venetian casino on Las Vegas Boulevard in the middle of the midwinter Mojave desert. You might expect this kind of thing in your local new housing estate. But this was in a building complex so meticulously, rigorously and expensively recreated from measured drawings that you gasped in disbelief at the telling. Eighteen months earlier I’d had a drink with the US architect in London and seen the slides. What blew the gondola fantasy out of the water was the next brick arch over this first-floor waterway. There was not a voussoir brick in sight. The arch was simply cut through the bricks like a wire cutting through cheese. Why, when the bricks were almost certainly slips glued on to particle board and all around was meticulously observed repro, could they not have bothered to get it even vaguely right? Rules of propriety For brickwork has its rules of propriety. They are easy enough to grasp, probably because there aren’t all that many of them. So when brickwork designers and bricklayers fail in this way, it’s like a stick in your eye. Bricks are small things, just small enough to lift comfortably in one hand. This means that, however you put them together, they have to comply with whatever laws of statics apply to 1 9x4 /2x3-inch building components held apart by beds of mortar. And when they do apply, brick can be the most 4 2 5 3 6 gloriously edible building material ever thought of. I have two brick reference walls that I carry around in my head. One is a long stretch of red Accringtons in the restaurant of what, nearly 30 years ago, was Runcorn’s only motel – Esso’s Beechwood motor hotel as it was then. Designed by the new town’s deputy chief architect, Keith Smith, it was built in the frenetic early ’70s building boom, when even vaguely skilled brickies could command small ransoms. They had to bring a foreman bricklayer out of retirement to supervise the work. He soon had the surly youths presented to him as quondam bricklayers hanging on his every word, watching his every trowel stroke – or so they told me. And they produced this stunning wall of plain brick, which I would sometimes visit, sitting at the circular, leather-edged bar in admiration. More recently, there’s been CZWG’s wonderful blue-glazed Circle in Bermondsey and practically any brickwork of John Outram. Wonderful decrepitude The other wall is – or perhaps was – a garden wall in a leafy lane opposite a small, smart new group of houses in Bury St Edmunds, Suffolk. It was, I think, a very old wall with what looked like medieval or even Roman bricks at the base, some courses of vernacular hit-and-miss brick and flint and, on top, a shoulder-high Georgian, possibly Victorian, garden wall, its rambling, sagging length supported here and there by those massive, sloping abutments, a wonderful decrepitude of clay, stone and lime beneath the tangled greens of hanging trees and wild foliage. And it sagged. It’s one of old brickwork’s glories, sagging. It’s something of which any brickwork is capable, providing it came before the introduction of hard cement mortars and regulations calling for massive foundations. Brick is the only building material that bothers to provide us with a diagram of the bearing capacity of the soil on which it stands. Oh, and chimneys. Blaise Hamlet, on the outskirts of Bristol, has a collection of John Nash-designed picturesque cottages whose chimneys are a mad brick delight: barley sugar twisted, doubled, decorated, demented they rise from their thatch a knobbly, crusty metaphor of the aged retainers for whom the village was designed. Immodestly, Blaise Then, right across the country in Kent, near Tonbridge and perhaps 40 years later, there’s the beautifully observed fake half-timbered and brick village of Leigh, designed mostly by George Devey and with chimneys quite as good. It is the mature, near-realistic version of the vernacular English village of which Blaise is an early parody and which our mass house builders fail to imitate with such style. Who needs ersatz Venetian campaniles and bad brick arches when we have such delicious pleasures as these at our back door? 7 PUBLIC BUILDING Cunning plan Professor Tony Monk reports on sustainable architecture that really stacks up Client Coventry University Architect Short and Associates Energy consultant IESD, De Montfort University, Leicester Minimal energy consumption was the leading principle in the design of the new Lanchester Library at Coventry University. Using carefully managed natural ventilation, passive cooling and solar heating as an alternative to air conditioning dramatically reduces running costs Contractor Totty Group Photography Martine Hamilton Knight Paul White I 8 t is rare for a new building to be truly significant and develop a new approach to design. The new Library and Resources Centre for Coventry University is just such a project, however. It contains a unique spark of originality and its concept is likely to have a profound influence on the design of buildings that provide large open-plan accommodation. The impressive cluster of tall towers creates a dramatic new landmark on the Coventry skyline. Its deep plan form manages to achieve 11,000 sq m of flexible library and teaching space on only four floors on a constrained site. In addition to the exciting sculptural architecture with compact efficient planning, it embodies a radical new approach to energy conservation that reduces energy consumption to a minimum. Like many organisations, the university has a tight annual budget that makes a major new building with minor annual running costs a compelling attraction. This large, heavily used library and resources centre avoids the capital and running costs of air conditioning and makes a significant contribution to the development of sustainable architecture. Also of great relevance to sustainability, and to lifecycle costing in particular, is the choice of brick as the main facing material. Brickwork has an attractive appearance and retains its good looks without the need for regular cleaning or supplementary decoration. This makes its service life costs extremely low. Furthermore, this advantage is provided without the penalty of high initial cost because brickwork is an economic, cost-effective and versatile form of construction. Design and planning The new building accommodates a large print and electronic library containing 350,000 books, 2,000 periodicals and media collections. There are also learning facilities, including a training suite and 300 computer terminals, as well as shops and a café. This is all contained in a flexible open-plan building, 46m square and four storeys high, with a basement. The towering service cores, entrance corridor and stairs are positioned outside the purity of this exact square form and visually relieve its otherwise large bulk. The volume is punctured vertically by a glazed atrium at its centre and four large, full-height light wells. The structure of the new building is a steel frame and the principal cladding material is facing brickwork supported on the frame at floor levels. Smooth, wirecut bricks are used – they are predominantly cream coloured, but include reds to create chevron patterning associated with fenestrated areas. Massive masonry walling and small windows minimise the intrusion of traffic noise from the elevated ring road beyond the western boundary of the site. The brickwork is the outer leaf of cavity walling that includes a 100mm cavity filled with mineral-wool insulation to give a U-value of 0.26. The inner leaf is of 140mm concrete blockwork with a plastered finish. This construction was chosen in preference to lightweight framing and dry lining because the masonry’s thermal capacity contributes to the comfort of the building by its stabilising influence on fluctuating temperatures inside. The library function required deepplan flexible accommodation, but natural ventilation in a deep-plan building is difficult if not impossible to achieve by means of perimeter ventilation. This consideration, together with the issues of noise and security that precluded opening windows on the building perimeter, helped generate the eventual design, developed after several feasibility studies by Professor Alan Short and Professor Kevin Lomas. It comprises an introverted 46msquare plan around a central atrium, with supplementary light/ventilation shafts within the building and high brick ‘chimney stacks’ around the perimeter that give the building its distinctive form. Four 6m-square light/ventilation shafts, linked at ground level into a plenum floor, conduct fresh air into the building as stale air is removed via the large central atrium and 20 ventilation stacks around the perimeter of the building. Heat generated by electronic equipment and the building’s users creates sufficient stack effect to achieve 9 the necessary air change rate for comfort. In cold weather, heating coils in the ground floor warm the building and activate air movement. The tall perimeter brick stacks terminate in metal structures specially designed to react to changing wind and to allow rising air to exit without mechanical assistance under all weather conditions. A sophisticated electronic management system regulates the effects of solar gain and glare, adjusting blinds and monitoring and controlling the heat and lighting requirements as well as the quality of the air and its movement. P e rf o rmance testing 10 The Institute of Energy and Sustainable Development at De Montfort University and the University of Wales School of Architecture modelled the air movement using computerised fluid dynamics. Scale models were built for testing in wind tunnels and under artificial skies. It is predicted that comfort conditions will be maintained and that temperatures will hardly ever exceed 27 o C. Furthermore, it is calculated that energy consumption will be only 18-20 per cent of a typical air-conditioned building. The Lanchester Library has been built for the same capital costs per m2 as the HEFCE normally approves for an air-conditioned building – but, with predicted running costs reduced by about 80 per cent, Coventry University will enjoy a major advantage in meeting the annual running costs. Interior Internally, the large universal spaces work well for the changing nature of library and IT use. The open plan, informal layout is well lit naturally by the internal courts and the triple-decker windows. A lofty 4.4m between floors, circular columns, perforated steel beams and the absence of suspended ceilings, all contribute to a pleasant spacious airiness in these busy workspaces. The central atrium and the four light wells also aid orientation in this large floor area. Use of the stack effect of natural air movement is not new. This application exploits an old principle for new energy conservation reasons. Short and Associates has used it previously, notably in the De Montfort University School of Engineering, Leicester and in the Contact Theatre, Manchester (featured in Brick Bulletin, autumn 1994 and summer 2000 respectively). But in the Lanchester Library we see the culmination of those evolving ideas. As at Leicester and Manchester, forms that at first sight might appear to be decorative exuberance are in fact derived from fundamental, functional elements and may be regarded as architecturally eloquent expressions of how the building works. The Lanchester Library and Resources Centre strikingly demonstrates that comfortable accommodation is possible without energy-hungry mechanical airconditioning. Achieving this does not exclude good architecture, it depends upon it. Short and Associates has created a most impressive building that is an excellent example of sustainable architecture. It was the worthy winner of the Brick Development Association Building of the Year Award 2000. HOUSING 1 In Dublin’s fair city Dublin Corporation has stalled housing’s flight to the capital’s suburbs. Eddie Conroy tells how Client Dublin Corporation A rc h i t e c t Dublin Corporation Architects department Photography Peter Barrows Barry Mason Eugene Gribben Michael Hammett Responsive to changing social needs, Dublin Corporation has exploited a series of well-designed housing-infill projects to address important issues of urban renewal in the Irish capital 2 D ublin has been described as ‘a city of houses’ and, at its centre, from grand Georgian houses down to the orderly weave of Victorian and Edwardian terraces and villas, these houses are made of brick. Traditionally, a variety of red bricks and the once-ubiquitous but now vanished Dolphins Barn brick, a sandstone-yellow stock, allowed a variety of building styles and urban gestures to blend into a satisfyingly coherent whole. Typically, only the most subtle of architectural moves mark these modest houses from each other. On an autumn evening, the long slanting light shows to best advantage the gently modulated colour and texture of each building within a strong urban framework of streets and squares. It is this subtle dialogue that gives Dublin its modest but memorable architectural character. The now vibrant centre of the city was not always as well fostered as it is today. From the 1930s onwards, politicians seized on the vote-grabbing potential of building houses cheaper, quicker and in ever greater numbers at the city’s edge. From the 1960s a series of disastrous and mostly unrealised road proposals blighted their putative routes while universities, hospitals and other institutions drifted to the suburbs. Close-knit urban communities fearing final displacement from their traditional habitats took to the streets to demand proper housing at the heart of the city. From these protests arose Dublin Corporation’s ongoing commitment to an urban-infill programme of housing. These projects began when the building of domestic accommodation in the decaying city centre was an unlikely venture. In this light, the choice of brick as the primary building material (as well as responding to context and reducing future maintenance) represented a firm commitment to highquality construction. These schemes, typically deploying a range of flexible house types to optimise brownfield and backland sites, showed it was possible to build well and, more importantly, to live well in the city centre. This lesson, reinforced by tax incentives from the 11 5 3 6 4 mid-1980s, has led to a residential influx to the heart of Dublin that is slowly repairing the enormous physical and social damage inflicted in earlier years. Backland idyll 12 Father Kitt Court, a recent housing project in the 1930s suburb of Crumlin, places terraced accommodation to the edge of a backland site, forming controlled public spaces within, linked in turn to the outside world. The existing community had a longstanding wish to reinforce the village quality of their neighbourhood and to find physical expression for a supportive community network. The project is arranged as a series of linking courtyards, rigorously composed and centred on a community facility – the ‘town-hall’ of this metaphorical village. The spaces created vary in size but are carefully proportioned to their enclosing buildings. Pinch points, emphasised by deeply overhanging gables, mark the transitions from space to space. The community hall has two bold columns gently pointing up its claim to civic status. This building generates a longer courtyard with a cranked end condition (courteously acknowledging St Agnes church beyond). Enclosure is the primary concern here and the brick is used to wrap the spaces created and to establish a datum line at upperwindow sill height, formed by a distinct but muted cornice with a brick biscuit used as a creasing tile in a very traditional manner. The brick used throughout is a red multi with a distinct, soft texture. Detailing is simple. Only the large window in each dwelling is allowed a relieved brick arch. Well-detailed railings at balconies counterpoint the stretched quality of the long brick facades. The evident quality of the scheme made it a finalist in the Brick Awards 2000. At the scale of the city The Corporation’s infill programme has concentrated primarily on two- and three-storey own-door houses in the city centre. These schemes frequently ran into problems of scale, often failing to match the height and massing of larger urban neighbours. Changing demographics and more complex living 7 9 10 1,3,5,7 Father Kitt Count 6, 8, 9, 10 Bride Street 2,4 Wolfe Tone Court 8 and family arrangements suggested the growing importance of more typological choice. This tendency was reinforced by the imperative of sustainability to increase density and maximise land use. The scheme at Bride Street/Golden Lane is a particularly innovative response to these concerns. It includes a four-storey brick terrace on two streets with a strong, highly modelled corner. A large archway allows layered views into a courtyard of two-storey houses; in some ways a mews to the four-storey terrace of maisonettes fronting the street – a condition readily comprehensible in Dublin. Large paired access stairs, reminiscent of New York brownstones, set up a stately rhythm along the street. Generous south-facing balconies decorate the facade and encourage the tenants to interact with the street and enjoy the gardens of St Patrick’s Cathedral beyond. The height and length of the terraces required a careful balance of detail to ensure scale. Brick, a practical choice to reduce maintenance, is used tellingly to offset the adjoining Iveagh Buildings and to warm the grey granite of St Patrick’s Cathedral opposite. It is a pre-mixed blend of red and buff multis with a distinct orange hue. Specials are used at eaves, sills and in the elegant semi-circular arches over entrances. Sculpted terracotta discs, with scenes from Gulliver’s Travels (Jonathan Swift was Dean of St Patrick’s) add wit to the elevations. This radical high-density scheme uses a readily understandable built language while avoiding the soft option of reinstating a street frontage. These concerns are taken a stage further at Wolfe Tone Close on Jervis Street. Here, an entire city block has been constructed. The ground floor was designed for commercial use to enliven the adjoining streets. The fiveand six-storey high buildings follow the site perimeter and have indented bullnosed corners at the junctions with Parnell Street. The corners are formed in sand-coloured reconstituted stone, which continues as an attic storey. The mix of stone and brick is less sure here than in Bride Street: the poorly proportioned balcony panels and vertical ‘structural’ stripes weaken rather than order the long brick elevations. On Wolfe Tone Street, the block rather agreeably defers to the street, creating a lunette-shaped suntrap. Adjoining, a city-scaled stairway leads under a giant arch into the secluded, but still public, courtyard beyond. This is a confident and meaningful piece of place-making. The courtyard is informal, with powerful brick terraces on two sides, articulated and colonised by generous balconies and stairways. The other sides, rendered in a yellow ochre, step down in height to ensure maximum sunlight penetration. The brick is a preblended mix of red, buff and orange multis, producing a satisfying effect. The project’s mixed use encourages street life. Adherence to the urban scale and street pattern reinforces enclosure and quality, while the clear linkage between the courtyard and the city beyond promotes integration between existing and new. There is political and public pressure to move away from the considerable achievement of such schemes into the comfortable, if illusory simplicity of two and threestorey houses and gardens. Such a step (rooted only in nostalgia, for it fails to address the real, changing needs of the people and the city) would betray the honourable role Dublin Corporation has forged in ensuring that public housing has a proud and useful part to play in the story of Dublin city. 13 OFFICE BUILDING Dressed to kill Deborah Singmaster inspects full-blooded modernist style in Surrey Client Gullane and Quintain Architect Stiff+Trevillion Structural engineer Anthony Wells Contractor Barnes and Elliott Photographers Alan Williams Michael Hammett Clarke House in Egham, Surrey, demonstrates that brick cladding can be used to satisfy local conservationists and produce a commercial building attractive to companies seeking elegant, highly contemporary premises E gham in Surrey is becoming an attractive out-of-London office location. A case in point is Clarke House, a speculative joint venture between developers Gullane and Quintain and designed by Stiff + Trevillion. Heathrow Airport and the M25 are nearby and there is an efficient rail service from the town to Waterloo and the City. The architect’s first design proposed a ‘white-panelled, Meieresque box’ but at a final planning meeting the conservation officer insisted on a pitched roof and red brick facades, in keeping with the local vernacular. Ancient precedents 14 Architect Andy Trevillion agrees that brick is an appropriate choice for Egham, given its many historic associations. Runnymede, where Magna Carta was sealed, is just down the road. Most local housing is red brick and nearby Royal Holloway College offers a resplendent anglicised red brick version of the Chateau de Chambord. The Clarke House site once housed an abattoir. Clarkes Butchers, facing on to the High Street, was part of the contract and has been converted into a pizzeria. Pig’s Lane used to wind between outhouses to the abattoir at the back. By clearing away these outhouses, Stiff+Trevillion made space for an attractive courtyard with fixed seats and newly planted trees. This courtyard forms part of a right of way connecting Egham High Street to the large public car park behind and is glazing. First floor portrait-format windows are set back half a brick width. Wider second-storey windows, set back a full brick width, give precedence and transparency to this top floor, in contrast to the gradual reduction of window size towards the top of a conventional, classically proportioned brick building. There are no expressed sills or lintel dressings; the openings simply punch through the brick skin. The steel lintel to the top-storey windows is painted black and left exposed behind the edge of the cladding. A fillet of powdercoated steel folds over the eaves as a coping and the facade brickwork is restrained at roof level by a visible steel ring beam. Descriptive glazing Windows are aluminium framed except for those facing the north boundary. The frames are steel and glazing is fire rated to one hour. The window arrangement here is identical to that on the front elevation but at the rear of the building, instead of detached concrete columns, the structural supporting pier is concealed behind brickwork. Ground floor glazing on the rear wall is broken into two large windows, with mullions positioned to form a middle panel where brick piers would have been used in solid brickwork. An additional wing, raised on piloti to allow car access to the rear of the pizzeria, extends to the east of the entrance elevation, forming one arm of the right-angled plan. The WCs and staircase are placed in the shadowed angle of the plan, with small horizontal windows indicating the WCs on stair landings. Variation without frills used and enjoyed by shoppers on a daily basis. Modernist approach As committed modernists, the approach of Stiff+Trevillion was to treat the brick as a contemporary ‘machined’ cladding, in stretcher bond with struck pointing. Andy Trevillion wanted ‘a precise wirecut brick with a sharp arris showing’. He also wanted to emphasise the non-structural function of the cladding: brick as skin. Since the interior of the concreteframe building had already been designed using a 6m grid (for optimal subdivision of offices), adopting brick for the exterior meant revising drawings in order to reconcile the brick module with the grid and adjusting facade openings so that they matched brick dimensions. Externally, the route of Pig’s Lane and the underlying medieval street pattern is hinted at by a meandering ribbon of Indian Sandstone, which weaves its way across the regularly laid paving slabs of the courtyard. Another reference to the past lies in the choice of brick colour and red-pigmented mortar – ‘bright red, like blood’, says Trevillion. Topsy turvy facades The arrangement of the elevations establishes an unconventional vertical hierarchy. The ground floor is fully glazed along the west-facing front and north-facing elevations, with structural concrete columns set forward from the The few departures from the overall uniformity of the brickwork at Clarke House are used effectively. Screen walls defining the entrance are stack bonded and stand out against the stretcherbonded front facade. A raised flowerbed running around the base of the building is contained by a brick wall capped with brick-on-edge: this has been planted with bushy evergreen shrubs. Even the brick wall surrounding the car park, with inset railings, has been carefully detailed and finished. Trevillion has high praise for contractor Barnes and Elliott. ‘Design and build, which this job was, has an appalling reputation for quality,’ he says. ‘But these days there’s a partnership between ourselves and the contractor and they were instrumental throughout in trying to maintain the quality of the project.’ 15 HOUSING Room with a view – or two Sue Duncan visits award-winning housing in London’s Docklands Client Wates Built Homes Architect David Richmond and Partners Contractor Wates Built Homes Photography Morley von Sternberg David Richmond With three Canary Wharf towers on one side and the Millennium Dome on the other, this modern residential development at Blackwall Basin has views to die for. But far from being overawed by its powerful neighbours, it has its own way of making an impact and yellow stock brickwork makes a major contribution B 16 ack in the mid-1980s, developer Wates Built Homes acquired this 0.86 ha site at Blackwall Basin in London’s Docklands. But the troubled economic waters that succeeded the boom years consigned it to the flotilla of projects riding at anchor pending better times. Architect David Richmond and Partners had looked at the site for Wates in the late 1980s but it was not until 1993 that the practice was asked to draw up planning proposals. Doubtless the subsequent decision to build the Millennium Dome smack opposite gladdened a few hearts. The site is a long and narrow one lying in the Coldharbour Conservation Area, which includes a number of Grade II listed Georgian buildings such as Isle House and Nelson House. From its southern boundary of Manager Street, it is tucked between architecture together at the waterfront. The scale, forms and massing and materials create an impression of permanence and security, sympathetic to its close neighbours. Indeed, Isle House was the muse for the materials palette – so yellow and yellow multistock brickwork predominates. The same is true of many design details – brick plinth, steps, window proportions and eaves details have been reinterpreted effectively in the new development. The garden square the busy thoroughfare of Prestons Road to the west and Coldharbour to the east. At its northern end, the plot extends out to the Thames along both sides of the Blackwall Lock. Blackwall Basin was originally built in 1800 to help tow in ships through to West India Docks and the narrow street pattern that emerged between the basin and the river helped establish the grain and support the densities of the scheme that emerged. Organisation The development provides three threebedroom penthouses, 57 two-bedroom and 13 one-bedroom flats, and six twobedroom mews houses organised around a new garden courtyard, the lock sides and a new urban square. This paved square created in front of the Georgian Isle House (designed in 1825 by Sir John Rennie as the Dockmaster’s House) is the hub of the scheme, linking the old and new Maximum space and sunlight penetration have been teased out of the narrow site by creating a gated square along its north-south axis, stretched east as far as humanly possible. At its centre is a sunny garden overlooked from the west by a terrace of fourstorey apartment blocks turning their backs to the busy Prestons Road, and from the east by three-storey mews houses backing on to Coldharbour. Garages are tucked in at ground level behind a colonnade. In the apartment blocks, the living/dining rooms enjoy a dual aspect unusual for high-density schemes: 17 18 double-aspect bays and deep-set balconies look on to the square while dining-area windows face west on to Prestons Road. Blocks are linked with recessed lantern staircase towers that also help articulate the terraces. On the public Prestons Road frontage, alternating with the indented dining-area sections, the rhythm they set up is specially apparent at night when the timber structure of the roofs is uplit and visible through the clerestory glazing. The modelling is very pronounced on the Coldharbour elevations of the mews houses, where rusticated plinths rise to first-floor level. The rustication – six courses of stretcher bond brickwork followed by a recessed course of header bricks – is further punctuated by blind windows to the garages behind, producing attractive shadow lines as you proceed up this narrowest of streets. Above plinth level, the brickwork changes to a lighter, plain yellow stock – as does Isle House, which, when cleaned had revealed lighter brickwork above a darker plinth. The rustication is a new introduction and you encounter it throughout – often rising a full four storeys, enriching the texture and contrasting with stretcher bond brickwork. The locksides The tight passage of Coldharbour has an undeniably dockside ambience, but it’s only as you emerge from it and the confined views open out over the lock towards the river that the sense of waterfront really impacts. Blocks of one- and two-bedroom flats are arranged north and south of the entrance lock where the scheme’s presence on that powerful Canary Wharf-Millennium Dome axis is announced by nine- and seven-storey penthouse towers commanding the river entrance. Height was an issue but the towers survived protest relatively unscathed, only two floors being lopped from the downstream tower. In fact, the development is height-sensitive. In the close confines of Coldharbour it steps down from four to three storeys and, elsewhere, brickwork gives way to rendering for the top floor, simultaneously tying the brickwork to a uniform line and reducing the apparent overall height. Brick elevations in the lock area are in a mixture of plain and rusticated brickwork. Vertical cedarboard cladding to the full height of the towers’ upstream elevations is weathering attractively, reflecting the colours of the reconstructed stone sills and rendering. The response to the site preserves the ethos of old dockside housing and street grain, balancing a sense of enclosure with dramatic views of river, docks and iconic architectural neighbours. While respecting the extant Georgian buildings of the Coldharbour Conservation Area, the development has created modern, well-proportioned architecture free of tweeness and gimmickry. These factors commended it to the 2000 Brick Awards assessors, who voted it winner in the Private Housing category. All units have been snapped up, so it’s proved popular with purchasers too. RELIGIOUS BUILDING Church triumphant George Demetri reports on a church with a very ecumenical response to architectural influences Client Roman Catholic Parish of Tring Architect Anthony Delarue Associates Structural engineer Robert Tucker Associates The market town of Tring has a new church that incorporates parts of a former building to provide historical continuity. Displaying a mastery of brickwork detailing, it also makes considerable architectural and symbolic contributions to the locality Main contractor EW Rayment & Co Photography Nigel Spreadbury A rchitecturally, you don’t get much these days for a modest £440,000. Yet the Roman Catholic Parish of Tring has landed an intriguing new church that not only fulfills its liturgical requirements, but includes an abundance of history and symbolism too – and the craftsmanship it displays is simply superb. Completed in November 1999 after about a year in construction, the Church of Corpus Christi in the charming market town of Tring, Hertfordshire, has been designed by Anthony Delarue Associates. The architect has shown a thorough understanding of brickwork detailing, as well as a wide range of historic, religious and symbolic sources. The result is a rich visual experience as Romanesque, Classical and Byzantine influences intermingle. The Victorian ethos is present in the polychromatic brickwork and meticulous attention to detail and, if it all has a strong Arts and Crafts flavour, 19 it is the inevitable result of using traditional materials on a small, typically English scale. The new church replaces its Edwardian predecessor, which the client was reluctant to see completely demolished. Thus, the tabernacle and gable walls and the campanile on the front elevation have all been incorporated into the new design, while the eight-sided apse and one arcade of the original Edwardian chapel have been rebuilt. The plan can be broadly identified as that of an early Christian basilica, with an interesting geometry added by an eight-sided baptistery and a sacristy whose irregular shape is determined by the site boundary. Exterior 20 The external massing of the building is dominated by the tower formed over the crossing, with a pyramidal roof of handmade clay tiles and elegant paletinted clerestory. Jostling for position next to this are the former gable and campanile, although the latter has been heightened with a louvred top. The architect inherited this collection and the truncated left hand side of the Edwardian gable unfortunately spoils what would otherwise be an equilateral triangle – an element normally symbolising the perfection of the Holy Trinity. Romanesque elements, such as the semi-circular arched windows made of three courses of header bricks, take their inspiration from the former chapel and are integrated into a classical framework comprising vertical subdivisions that suggest pedestal, shaft, capital and entablature. Walls reuse the fine Luton grey bricks of the old presbytery and are supplemented by new matching bricks, as well as handmade reds. A Byzantine reference is seen on the pilasters, with their alternate banding of red brick and cream-coloured fair-faced blockwork. A continuous garland of roses above the arched window heads Award-winning craftmanship: an appreciation by Bob Baldwin One is prepared for music inside a church, but the new brickwork of Corpus Christi sings to you as you stand outside and gaze at it. The professional pride felt by the bricklayer in building the in-situ facework arches, setting cornice bricks and other specials both internally and externally and creating a ‘Roman’ door detail while embracing diaphragm wall construction, shines out of this building. Great care has been taken to space out arch bricks to an equal number either side of the central key bricks. looks deceptively like terracotta, but is in fact very fine clay brick. This was preferred to terracotta, which was deemed more suited to an urban setting. The building combines detailing that is either subtle or highly evident. Subtle is the simple keystone detail to the small window on the bell tower, comprising two courses of splayed stretcher bricks. More forceful are the battlements added to a section of the Notice the parallel mortar joint between arch rings and the sensitive cutting of brick courses, where these intersect the extrados, giving another, near-parallel, semi-circular mortar joint around every arch in this building. All facework mortar joints were raked-out each day in preparation for a separate pointing operation after completion of the facework. This was worked from the top down using a variety of joint finishes (flush, slightly recessed and struck), with care taken throughout to emphasise brick rear elevation. Theses additions are designed to suggest a fortified dimension to the sacristy, which is used to store valuables. Interior Entrance to the narthex of the church is via a distinctly classical doorway, inspired by houses in the Roman Forum that the architect had measured as a student. The continuous brick arcade bonding at internal angles by pointing left and right at these junctions. A bricklayer never forgets working on a job such as Corpus Christi, where bringing to life the architect’s ideas make it a pleasure go to work each day. Bob Baldwin is president of the Guild of Bricklayers and was a judge for the 2000 Brick Awards, in which Corpus Christi took the Best Craftsmanship Award. The judges were impressed by the consistently high standards maintained in a variety of challenging details throughout the construction. surrounding the nave and sanctuary emphasises the basilica plan. Brickwork is exposed throughout the interior, whether for walls or piers. The exuberant detailing, so characteristic of the outside, is mostly toned down to flat, unadorned surfaces on the inside. Even so, considerable warmth is imparted by the red string courses on the piers and aisle walls. The ambience is enhanced by low winter sunshine, tinted by the rose, lilac and yellow panes of the clerestory glazing. The combination of brickwork and timber is particularly effective. Stout trusses of stained European redwood support the nave roof, while aisle roofs have a simple exposed beam structure to support their low pitches. More dramatic is the roof structure of the tower, comprising a hierarchy of king and queen posts and diagonal bracing to form a symbolic ‘crown’ directly above the altar. Yet all these diverse elements somehow come together to form a rich tapestry of architectural and ecclesiastical history that is just waiting to be unravelled by the observant eye. This may take some time but, like any good work, repays the effort. 21 HOUSING Solar system Robin Wilson reports on an outbreak of modernism in Gloucestershire Clients Tewkesbury Borough Council and Gloucester Housing Association Architect Cater Day Ltd Contractor Pearce Construction (Midlands) Photography Nigel Green Darren Cater’s energy-efficient housing aims to provide an alternative to mass-production, ‘neo-Victorgian’ housing schemes. It is all a question of integrity 22 T he site of a new social-housing project by Gloucestershire-based architect Darren Cater could be said to lie at the frontier of the changing topographies of small-town England. Enclosing it on three sides are extensive ‘executive’ housing schemes – the all-too-inflexible solution to housing need that has taken up vast belts of greenfield land in the country. To the west of Cater’s project is a flood plain, which, at the time of the project’s completion in November 2000, was under water thanks to backflow from the swollen rivers Severn and Avon. Beyond that is the town of Tewkesbury – the massive limestone tower of its Norman abbey clearly visible. The design was chosen in an open competition run by Tewkesbury Borough Council’s planning department. Energy efficiency, communal interaction, ‘lifetime’ adaptability and progressive rather than retro approaches to styling formed the basic premise of the brief. The chosen solution is a strong synthesis of architecture and engineering. The requirements of domesticity and medium-density living are expressed here as a hard-edged system. Terrace as solar machine There has been no specific referencing of previous architectural forms, which must be a first for a major nonindustrial project in Tewkesbury since the 1960s. But the project could be seen as a meditation on and evolution of the brick terrace. Cater has shifted, extracted and juggled with its symmetries and repetition. Brick returns, then, not as the levelling medium of uniformity but as a particular texture and tone, as one planar surface in a lively play of interrelated surfaces: brick, wood, render, glass, metal. Windows slide to the edges of facades and wrap around corners, or up to meet the asymmetrical pitch of a roof; rainwater guttering and downpipes become crisp metallic articulations that accentuate and further diversify the geometric play. All 15 units (arranged in three terraces) have built-in steel and glass conservatory spaces, allowing the exposed brick surfaces to take on both interior and exterior roles, and to provide the backdrop for the seasonal expansion of the household into these intermediate areas between the private and the communal space. Of double height, the conservatories make for expressive, functionalist forms, but their actual usage seems somewhat ambiguous, caught between utility and leisure space. Indeed, the word ‘conservatory’ might have the wrong connotations. Rather, they could be seen as a development of the front porch, an expansion of that threshold structure so as to become a room of itself. Or we might dispense with all comparisons to usual domestic spaces and simply call these glazed volumes solaria. This would be consistent with the fact that the project has been moulded largely by the desire to maximise the use of solar energy. There is a strong coincidence between the requirements of passive heat transfer and the creation of dynamic, interior spatial relationships. On the north terrace, the kitchen windows wrap around the corners of the brick towers at the lower level to face both the exterior and the interior of the solaria. On the east and west terraces, this role has been transferred to the first-floor bedroom windows. All the units also open out on to their solaria from the first-floor landings. The panels, which provide energy for hot water, are embedded into the stainless steel sections of the roofing on the north terrace and on the south-facing tiles of the east and west. This amounts to a convincing modulation and mixing of design elements. The terrace house has been converted into solar machine with an authority that would suggest such projects have been the norm in Britain for years. The one downside to the requirements of solar orientation is the comparative blandness of the shadier facades of the estate. Integration A textured orange-red multi brick manufactured nearby was chosen, both for the purposes of integration and energy efficiency in the logistics phase. The bricks are laid exclusively in stretcher bond. This linearity is in keeping with the purism of the overall project, but use of the medium is not without expression. At the site’s eastern edge, the stretcher bond has turned serpentine to form a ‘crinkle-crankle’ wall. This successfully reduces the dogma of the solid division while maintaining privacy for the gardens. It is also a fitting symbol of the potentially uneasy boundary between the rented property within and the privately owned housing without. Cater’s project has a functionalist sobriety and, above all, a strong grasp of the basic, common sense realities of contemporary housing provision. It combines an active encouragement of communal interaction with high levels of energy efficiency through the common denominators of light and transparency. It also demonstrates how a strong adherence to functionalism is not at odds with assimilating new forms into a context as sensitive as the English abbey town. It’s rather sad that such modernism, widespread throughout Europe, is as rare as hens’ teeth in this country. 23 STRUCTURAL BRICKWORK Music to the eyes George Demetri sings the praises of a new music room Client Haberdashers’ Monmouth School for Girls Architect Victoria Perry Architecture Structural engineer Andrew Smith Consulting Engineers Main contractor George Adams & Sons Acoustic consultant Arup Acoustics Photography Jack Tait Andrew Smith A contemporary music pavilion for a girls’ school in Monmouth not only solved awkward site and aesthetic problems with style but also struck a chord with Brick Award judges for its structural use of brick I nterpreting architecture in ways the architect never intended is an easy trap in which to fall. So it is very tempting to see some parts of the almost monastic, white, curvedceilinged interior of the new music pavilion at Haberdashers Monmouth School for Girls as vaguely reminiscent of Le Corbusier’s Chapel at Ronchamp. But this was not Victoria Perry’s intention when she set out to design a modern building in a very traditional setting. She does, however, admit to being influenced by the genius of Alvar Aalto. Yet the monastic atmosphere that has resulted could not be better suited to the studious contemplation of musical harmonies, enhanced by spectacular views of the hills in Monmouthshire. The pupils of Haberdashers have a well-designed and equipped music facility to ensure their talents are nurtured to the full. Background 24 Haberdashers is a charitable trust comprising a total of seven private schools that provide secondary education in England and Wales. The school for girls in Monmouth wanted to extend its music department to provide much-needed concert and recording facilities. Although originally keen on an extension, the architect persuaded the school board to opt for a separate, free-standing pavilion. The result speaks for itself. But the site presented a few obstacles: steeply sloping and surrounded by traditional buildings in brick and stone, it also lies smack bang within a conservation area. Local conservationists wanted something along traditional lines, but the architect once again argued successfully for a contemporary building, much of which would be set snugly into the steep slope to minimise the bulk. As a result, the smart little pavilion has a Tardis-like effect on visitors, who may be surprised at just how much interior space has been accommodated within a modest volume. As well as the main rehearsal chamber, a recording studio, lobby, kitchenette, store and WC have been provided. Although designed in a modern idiom, the £262,000 project is built of traditional, solid, loadbearing brickwork laid in English garden wall bond, a wall construction common in Monmouth. Apart from the part-glazed elevation to the terrace, the most obvious concession to modernity is the curving stainless steel roof, a form reflecting the slope of the hillside and alluding to the curves on grand pianos and other instruments. Structure The building is a basic 20m x 12m brick box with one side partially glazed. To resist the forces from the slope on the higher side, the rear wall is a solid, two-brick-thick retaining wall reinforced by mild-steel bars set in concrete-grouted pockets. It reduces in section to one-and-a-half bricks above ground level. Because of reduced ground pressures, flank elevations required thinner wall sections, although wall thicknesses are increased on the glazed elevation to accommodate padstones and rainwater pipes and to achieve fortress-like deep reveals. Frames set well back from the outer face of the brickwork further enhance this effect. Although loadbearing brickwork is the main structural element, the overall structure is best described as hybrid: where steel roof beams terminate above the 3.2m uninterrupted ground-to-eaves glazing, they are supported by the slenderest of rolled hollow steel sections, which form elegant pilotis immediately in front of the glazing. The use of stainless steel standingseam roofing on woodwool slabs necessitated the construction of two drips or steps in the roof slope. While this in itself is not a problem, it has resulted in a rather clumsy detail at the junction with the black-painted ply fascias, chosen because of budgetary constraints that disallowed the stainless steel fascias originally intended. Brickwork Soft, hydraulic lime mortar in the solid wall construction used throughout was designed to obviate the need for movement joints and the sometimes tricky detailing normally associated with cavity wall construction. However, the type of lime mortar used took longer to set than originally anticipated, causing some delays in the job’s progression. Although a pozzolanic additive subsequently cured the problem, it also resulted in an intense, white-coloured mortar that has now started to tone down. The adjacent old stable block provided the reference for the brickwork: the Brick Development Association provided guidance on local brickworks producing similar red bricks. This was fortuitous because the client had expressed the desire that materials should be sourced locally wherever possible. As most of the brickwork is relatively straightforward, there are few specials: tapered soldiers form the flat arches above the door and slot window openings, while the solid bricks used to form the crisp, flush window sill details have a sloped upper face to facilitate drainage. Queen closers are also incorporated near changes of direction to maintain bond. Internal It is a measure of just how ingrained cavity-wall construction has become that the local authority was at first wary of traditional solid brickwork due to the risk of water penetration to the inside face. But it eventually approved a construction involving a 29mm insulation board with integral vapour barrier applied to the inside face of the brickwork. This was overlaid by timber studs at 300mm centres, on to which two layers of plasterboard and skim were applied to achieve the required acoustic reverberation. This complete wall build-up achieved a U-value of 0.42. The sweeping curve of the dramatic ceiling is brought to life by the light entering through the clerestory window. The all-pervading whiteness is tempered by the locally sourced oak floor, contributing to the pavilion’s overall serenity and inspirational ambience. 25 REFURBISHMENT Romantic renaissance Deborah Singmaster falls for the Ikon Gallery Client Brindleyplace plc Architect Levitt Bernstein Structural engineer Peel & Fowler Contractor Tarmac (now Carillion) The refurbishment of the Ikon Gallery in Birmingham is the stuff of romantic fiction, the tale of a typical neo-Gothic Victorian school rescued from dereliction and transfomred into a vibrant modern art gallery Cleaning consultant Adriel Consultancy Tower reinstatement WBM Restoration Photography Martine Hamilton Knight I 26 f architecture were fiction, the Ikon Gallery would be one of its bestloved characters. Here is a decorative Victorian redbrick school playing a pivotal role among a cast of chunky nouveaux brick-faced offices. Its ornate exterior conceals a steel frame capable of supporting massive floor loads and its mission is to exhibit cutting-edge art and provide the citizens of Birmingham with an enlightened fine arts education programme. Three groups are behind the success of the gallery, one of the first projects to be granted National Lottery funding and winner of the Refurbishment category in last year’s Brick Awards: the City of Birmingham, the developer Argent and architect Levitt Bernstein. Gradual decline The gallery was originally Oozells Street School, designed by Birmingham practice Martin & Chamberlain and built in 1877. In 1964, the tower was pronounced unsafe and had to be removed. By the early 1990s, when developer Argent began regenerating the 8ha plot surrounding the building as the new Brindleyplace, the school was derelict, protected from demolition only by its Grade II listing. Birmingham City Council insisted that Argent repair and secure the fabric of the school. The refurbishment programme fell into two contracts, both under the direction of Levitt Bernstein. The first was purely for repair of the fabric, the second for conversion into new quarters for The Ikon Gallery. Painstaking investigation The original brick was quite soft. It had absorbed the grime of its industrial setting for more than a century and was literally black in places. Project architect Paul Clark went round tapping each individual brick to discover which were ‘blown’ and which still sound. Engineering analysis established that brick strengths varied widely, a discovery that led to the decision to insert a steel frame inside the external brick shell. Levitt Bernstein sourced more than 15,000 second-hand bricks for the project. The amount of repair and patching, adding and dismantling that had taken place through the school’s history meant that the elevations were already a patchwork. The presence of white glazed bricks at the rear indicates that there had once been an inner courtyard; some of these bricks had to be replaced, a delicate operation because of the danger of chipping. Ornamentation The Gothic elevations were heavily ornamented with string courses, elaborate coping details, arched openings with rope reveals, decorative basketweave or herringbone brick panels and, in the later extension, terracotta surrounds to doors and windows. Many of these specials had to be replaced and one entire front gable was rebuilt. The new specials are most easily identified where the sills of the windows to the cafe were lowered to ground level. Martin & Chamberlain had used terracotta frames and lintels on openings in the later rear extension; Levitt Bernstein copied this feature in its new openings. The new main entrance and the imposing internal doorway leading from the reception area to the glazed lift enclosure have terracotta reveals indistinguishable from their 1890s counterparts. But the terracotta voussoirs above the main entrance are novel, curved in plan and hung off the new interior structure. About 42 different types of special were made for the project; the quantities required of each varied from ten to 550. Gentle approach A key to achieving homogeneity, despite the wide range of brick colour present, lay in the specialist cleaning operation, directed by Nicola Ashurst of the Adriel Consultancy. ‘Her way was to do it as gently as possible,’ says Paul Clark. ‘She used a diluted spray and knew when to stop. Areas of stone and brick are still dirty in places, but that’s part of the building’s history.’ The pointing also provides visual as well as literal bonding. Like the original pointing, it is a forgiving flush joint ideal for disguising small blemishes and marginal size differences; it was also appropriate for use with the soft original brick, which lacked a sharp arris. The tower Six months after the conversion contract was under way, a European grant made possible the reinstatement of the tower. Towers were regular features of Martin and Chamberlain schools as a means of improving classroom ventilation; the building had never looked right without its tower. ‘Without it there was a dreadful stump,’ says Paul Clark. The only evidence for the tower’s appearance was two old photographs and a drawing made shortly before its removal. Mungo Park, the site architect responsible for the tower reconstruction, regularly checked from the same point where one of the photographs had been taken that the rising replica matched the original. No attempt was made to disguise the junction between the surviving base of the tower and the new top. It rests on a light steel frame, placed on top of the reinforced concrete lining to the entrance stairwell, which takes all loading directly to the ground. The brickwork panels beneath the finials are fluted, a feature of other Martin & Chamberlain schools but not found elsewhere at the Ikon. Straight runs of rope reveals to the lancet windows were re-cast from moulds already used for the main building. String courses were also repeated, but new specials were required for the apex reveals and towards the base of the louvred openings where the rope reveals terminate in canted tapering darts. The finials were produced at the last minute by a potter in Cornwall and had to be collected hot from the kiln to get them back to site in time for the official opening. What a fitting end to a tale of architectural romance and derring-do. 27 LABORATORY BUILDING It all adds up at Strathclyde Frank Arneil Walker gives full marks for well-integrated diversity Client University of Strathclyde, Glasgow Project Manager University of Strathclyde Estate Management Architect Reiach and Hall S t ru c t u r a l engineer Ove Arup and Partners Main contractor HBGGA Construction Photography Keith Hunter The stunning solar walls of Strathclyde University’s Institute of Biomedical Sciences is only one aspect of a teaching and research building where the carefully considered design of the parts is paramount 28 L aboratory buildings present the designer with a notoriously difficult brief. More than any other building type, they demand the careful integration of plan, structure and frequently complex services, yet often call for loose-fit flexibility. When these requirements are combined with the contextual problems of a site located at the heart of a downtown university campus, which is all too evidently the agglutinative consequence of several decades of development plans and architectural fashions, the task is intimidating. Faced with this challenge at the Institute for Biomedical Sciences for the University of Strathclyde in Glasgow, architect Reiach and Hall has created a building where, perversely, the sum of the parts is greater than the whole. Campus context The layout concept responds to guidelines set in the university’s development plan of 1988, in particular the call for a series of linear buildings along the north edge of the campus. Accordingly, the institute’s spine of laboratory accommodation runs eastwest, parallel to Cathedral Street, but is set back to allow a generous service forecourt. At its eastern end, the new four-storey building links north in an L-plan relationship with the existing Todd Centre on Taylor Street. Shared administration offices, lecture rooms and social areas are introduced in a sixstorey tower located in the knuckle junction where the two buildings meet. Rising to the south is a green inner landscape, a collegiate garden bounded on the ridge by the long, bay-windowed wall of the university’s School of Architecture. Laboratory spine The planning of the laboratory spine is simple. The laboratories themselves, used for teaching on the lower levels and research above, are kept to the south side of a central corridor. They are fully glazed, enjoying the view across lawns and trees. Ancillary support spaces and staircases are ranged along the north side of the spine and the wall to the Cathedral Street yard is in stack-bonded, smooth red brickwork. The structural system is less straightforward, however. Whereas to the north of the corridor a steel frame has been adopted ‘due to geotechnical problems’, on the south beams and floors are constructed in concrete. Here, the frame is arranged in an ‘iambic’ modular rhythm (a-b-a-b- and so on), which not only permits flexibility in the sizing of the columnfree laboratories but also eases the distribution of necessarily complex servicing. The thermal mass of this exposed concrete frame soaks up daytime heat loads and cools at night. The low tower forming the link with the Todd Centre is built in smooth blue brickwork. The plan is roughly square but curves at the north-east corner, where a stairwell entrance, leading to the teaching and research spine, recesses against the south end of the existing building. On each floor, academic offices are grouped around central social spaces except at the lowest level, which is taken up by a 250-seat lecture room oriented on a diagonal axis to the south-east corner of the plan. This corner, too, is rounded, the impact of its bold external curve intensified by the sharp angular projection of a fully glazed emergency staircase. From Taylor Street, a pedestrian route leads round this dramatic corner into the green courtyard and continues west alongside the laboratory spine. Solar wall Fronting this long, south-facing elevation is a double-skinned clearglazed solar wall, in effect a corridorwidth transparent duct applied to the face of the building from sill height at the lowest level to sill height at the highest. Dropping vertically within this peripheral zone is a series of tubular fresh-air supply ducts clad in stainless steel and progressively diminished in diameter as they enter the narrower structural bays at each laboratory ceiling. These ducts fall from a long header duct at eaves height which runs along the skyline. At the top of the solar wall, below a deep parapet of smooth red bricks, continuous adjustable louvres control the stack-effect ventilation. At each level, inside and outside the outer skin of Planar glass, a galvanised steel walkway grille permits access for cleaning and maintenance while acting as a brise soleil. Opening windows are provided along the internal skin. In addition to the passive low-energy advantages of a design solution that reduces heat loss and ensures a controlled regime of natural ventilation, the double-skin wall provides added protection from the weather. Since the solar wall is fully glazed, any reduction in the amount of light entering the laboratories from the south is only marginal. Moreover, by revealing the shiny lineaments of the building’s environmental strategy, the wall’s transparent depth creates a refined techno-aesthetic well suited to a university proud of its technological distinction. Design in bits This exciting wall is memorable. Yet it is a singular architectural event, understandably specific to its orientation and environmental intention. Other parts of the building have their separate characters. The north elevation is industrial: a cliff of red brick under a rooftop plant room walled in patent glazing. The comer tower is commercial: a small office block built in purplish-blue brick. The existing Todd Centre, no less officelike, is in rustic brown brick. Certain design tactics are employed in an attempt to bind the disparate elements of the building together. The brickwork is flush-pointed. On all fronts, windows are conceived as long horizontal bands of glazing. There are no reveals; window frames are brought to the outer surface of the brickwork to create a planar skin. But none of this entirely dispels the sense that there are three parts here and not one whole. What the disposition of the building parts achieves in relation to the existing campus layout, the choice of building materials serves to underscore. The three brick colours – red, blue and brown – all appear in adjacent university buildings. And perhaps this is the designers’ cleverest trick – to have embedded the bits of the new in such a way that form, scale and colour rest easy. 29 SPECIALIST SERVICE On a screen near you Malcolm Barnett, BDA Education Architect, looks at CAD s e rv i c e s Roman Deva Garden, Chester Zoo: This formal centrepiece of the garden, based on a hunting scene mosaic unearthed at Pompeii, uses clay cobbles as mosaic pieces. The layout, pattern and cutting requirements were developed by the brickmaker using its CAD hard landscape program. T 30 he flexibility of brickwork means that it can be tailored to virtually any design situation. In order to help specifiers exploit this virtue, and to generate detailing solutions that work, brickmakers have been quick to provide assistance by way of computer-aided design (CAD) services to architects, engineers, contractors and distributors. Naturally, the type and extent of services and the basis on which they are supplied varies between individual companies – this article aims to provide an overview. Services range from design studies and 3D visualisations through to final construction details and scheduling services for cost estimating purposes. The most commonly used CAD software is AutoCAD 2000, but information can also be made available in DXF format for use with other commonly used CAD systems. Information can also be exchanged via all available electronic systems. Kosei Securities Offices, Osaka: The Japanese architect of this prestigious headquarters building sought British expertise in the detail design of its superb brickwork. CAD resolved details of the major-span arch at the entrance, the minor-span circular arches and the intricate bonding that produced the texture that is such a striking feature of this impressive building. For architects and designers not yet geared to CAD, at least one company can convert hand-drawn details into AutoCAD and can produce 3D computer images from 2D information. Some manufacturers also maintain a photographic sample database of their bricks that can be combined in a variety of bonds and mortar colours to produce digital versions of brickwork panels. These can be e-mailed to the client as JPEG files. These visualisations can also be pasted into 2D and 3D models to show the effect on the overall appearance. Many manufacturers can help with the architectural detailing of arches, plinths, window surrounds, corbels, sills, copings and cappings and the most intricate arrangements of polychromatic brickwork. Sketches and templates for bespoke brick specials, plaques and lettered bricks can quickly be produced. Depending on the circumstances of each individual project, these services may be available on a speculative basis or on receipt of confirmation that an order will result. Details are often prepared to clarify order requirements and, following receipt of the order, details may then be produced full size for use in manufacturing, particularly when non-standard special shapes are being used. Paving layouts are another example of how manufacturers’ CAD services can help designers and suppliers in exploring a number of options. Ranges of standard brick and paver details are available in electronic format for incorporation directly into CAD drawing files for software systems capable of reading DXF files. For more information on individual companies’ services, visit the BDA website www.brick.org.uk, which has links to all member company sites. Or contact our Brick Information Service. Leeds General Infirmary: Sensuous curving forms characterise planters in Jubilee Square, the attractive entrance to the hospital. Artist Tess Jaray’s concepts wer e realised in bespoke bricks, designed and dimensioned with the help of the brickmaker’s CAD service. 31 Ambion Brick Co Ltd Swan House, Bosworth Hall, The Park, Market Bosworth, Warwickshire CV13 0LJ Tel 01455 292888 Fax 01455 292877 Email sales@ambion.co.uk www.ambion.co.uk Northern Sales Office Tel 01388 603008 South East Sales Office Tel 01403 241555 South West Sales Office Tel 01752 880659 Baggeridge Brick plc Fir Street, Sedgley, Dudley, West Midlands DY3 4AA Tel 01902 880555 Fax 01902 880432 Email sales@baggeridge.co.uk www.baggeridge.co.uk Sales Office Tel 01902 880666 London Consultancy Tel 020 7236 6222 Rudgwick Sales Office Tel 01403 822212 Bovingdon Brickworks Ltd Pudds Cross, Bovingdon, Hertfordshire HP3 0NW Tel 01442 833176 Fax 01442 834539 Email info@bovingdonbrickworks.co.uk www.bovingdonbrickworks.co.uk Broadmoor Brickworks Ltd Whimsey, Cinderford, Gloucester GL14 3JA Tel 01594 822255 Fax 01594 826782 The Bulmer Brick & Tile Co Ltd Brickfields, Bulmer, Sudbury, Suffolk CO10 7EF Tel 01787 269232 Fax 01787 269040 Email bulmerbrickandtile@virgin.net Carlton Brick Ltd Grimethorpe, Near Barnsley, South Yorkshire S72 7BG Tel 01226 711521 Fax 01226 780417 Direct Sales Line Tel 01226 715000 Chelwood Brick Ltd Adswood Road, Cheadle Hulme, Cheadle, Cheshire SK8 5QY Tel 0161 485 8211 Fax 0161 486 1968 Email marketing@chelwood.co.uk www.chelwood.co.uk 32 © 2001 The Brick Development Association Limited Woodside House Winkfield Windsor Berks SL4 2DX Tel: 01344 885651 Fax: 01344 890129 E-mail: brick@brick.org.uk Website: www.brick.org.uk WH Collier Ltd Adswood Road, Cheadle Hulme, Cheadle, Cheshire SK8 5QY Tel 0161 485 8211 Fax 0161 486 1968 Dennis Ruabon Ltd Hafod Tileries, Ruabon, Wrexham LL14 6ET Tel 01978 843484 Fax 01978 843276 Email sales@dennisruabon.co.uk www.dennisruabon.co.uk Freshfield Lane Brickworks Ltd Danehill, Haywards Heath, Sussex RH17 7HH Tel 01825 790350 Fax 01825 790779 Email sales@flb.uk.com www.flb.uk.com Beacon Hill Brick Company Ltd Wareham Road, Corfe Mullen, Wimborne, Dorset BH21 3RX Tel 01202 697633 Fax 01202 605141 Email sales@beaconhill-brick.co.uk www.beaconhill-brick.co.uk Chiddingstone Brickworks Ltd Bore Place, Chiddingstone, Edenbridge, Kent TN8 7AR Tel 01732 463712 Fax 01732 740264 Email info@commonwork.org www.commonwork.org Coleford Brick & Tile Co Ltd The Royal Forest of Dean Brickworks, Cinderford, Glos GL14 3JJ Tel 01594 822160 Fax 01594 826655 Hammill Brick Ltd Eastry, Sandwich, Kent CT13 0EH Tel 01304 617613 Fax 01304 611036 Hanson Bricks Europe Stewartby, Bedford MK43 9LZ London Tel 08705 258258 Kempston Tel 08705 258258 Butterley Tel 08705 258258 Desimpel Tel 08705 258258 Fax 01234 762041 Email info@hansonbricks.com www.hanson-brickseurope.com Ibstock Brick Ltd Ibstock, Leicestershire, LE67 6HS Tel 01530 261999 Fax 01530 257457 www.ibstock.co.uk Scotland Glasgow Tel 0870 9034001 North West Parkhouse Tel 0870 9034007 North East Throckley Tel 0870 9034004 Eastern Leicester Tel 0870 9034008 Hathernware Tel 0870 9034016 West Midlands Lodge Lane Tel 0870 9034006 South West Cattybrook Tel 0870 9034010 South East Laybrook Tel 0870 9034012 London London Tel 0870 9034013 Kingscourt Brick Kingscourt, County Cavan, Ireland Tel +353 (0)42 9667317 Fax +353 (0)42 9667206 Marshalls Clay Products Ltd Southowram, Halifax, West Yorks HX3 9SY Tel 01422 306000 Fax 0113 220 3555 www.marshalls.co.uk Sales Office Howley Park Woodkirk, Dewsbury, West Yorks WF12 7JJ Tel 0113 220 3535 Scotland Sales Office Tel 0141 333 0985 Normanton Brick Co Ltd Wakefield Road Brickworks, Normanton, West Yorkshire WF6 1BG Tel 01924 892142 Fax 01924 223455 Northcot Brick Ltd Blockley, Gloucestershire GL56 9LH Tel 01386 700551 Fax 01386 700852 Email info@northcotbrick.co.uk www.northcotbrick.co.uk Ormonde Brick Ltd Castlecomber, County Kilkenny, Ireland Tel +353 (0)56 41323 Fax +353 (0)56 41314 Phoenix Brick Company Ltd The Brickworks, Campbell Drive, Barrow Hill, Chesterfield S43 3PR Tel 01246 473171 Fax 01246 280345 Email phoenixbrick@netscapeonline.co.uk Red Bank Manufacturing Co Ltd Measham, Swadlincote Derbyshire DE12 7EL Tel 01530 270333 Fax 01530 273667 Email sales@redbankmfg.co.uk www.redbankmfg.co.uk Redland Tile & Brick 48 Coalisland Road Dungannon Northern Ireland BT71 6LA Tel 02887 723421 Fax 02887 727193 www.redland-tile-brick.co.uk Sussex Brick Ltd Fourteen Acre Lane, Three Oaks Hastings, East Sussex TN35 4NB Tel 01424 814344 Fax 01424 814707 The Wemyss Brick Co Ltd 45-49 Cowley Street, Methil, Fife KY8 3QQ Tel 01592 712313 Fax 01592 716349 Email wemyssbrickco@btinternet.com www.wemyssbrick.co.uk The York Handmade Brick Co Ltd Forest Lane, Alne, York YO61 1TU Tel 01347 838881 Fax 01347 838885 Email sales@yorkhandmade.co.uk www.yorkhandmade.co.uk Brick Information Service available on 09068 615290 Monday to Fridays at 10.00am - 12.30 pm & 2.30pm - 4.30pm. Calls are automatically charged at the rate of 60p per minute. The contents of this publication are intended for general guidance only and any person intending to use these contents for the purpose of design, construction or repair of brickwork or any related project should first consult a professional advisor. The Brick Development Association, its servants, and any persons who contributed to or who are in any way connected with this publication accept no liability arising from negligence or otherwise howsoever caused for any injury or damage to any person or property or as a result of any use or reliance on any method, product, instruction, idea, or other contents of this publication.