Timber in Architecture Supplement CONTENTS
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TIMBER IN adf ARCHITECTURE 10.16 A great deal BETTER than ply Join in the conversation, #SterlingOSB @Sterling_OSB SterlingOSB 10.16 Timber in architecture supplement CONTENTS 4 Industry news and comment PROJECTS 15 French resistance to concrete A CLT office building currently on site in Paris is set to become an emblem of timber construction in France, as the country’s largest building of its kind. Jess Unwin speaks to its architects about how modern engineered timber is gaining traction as a solution 21 Timber transformation Cross-laminated timber provided an ingenious structural solution as well as a crisp-lined urban aesthetic for the refurbishment and extension of 142 Bermondsey Street in Central London. Stephen Cousins reports 27 Winners in wood design The winners of the 45th annual Wood Awards will be revealed in November. Ahead of the ceremony, Sarah Johnson exclusively previews the 27 shortlisted projects in the Buildings Competition section FEATURES 33 Oriented towards design Stuart Devoil of Smartply explains how the humble sheet of OSB has become a design solution as engineered timber panels are being used across the building sector, from the construction of energy efficient and low carbon homes to site hoardings and everything in between 35 Stamping out fire risk Dire consequences await designers and construction firms if fire retardant treatments fail to perform during a blaze. Mike Smith of Lonza outlines how to ensure your protected timbers are compliant 38 38 Why a wood first policy stacks up Greg Cooper of B & K Structures discusses the positive impact of cross laminated timber within the built environment 40 Calling for a shift in focus Frank Werling of Finnish wood specialists Metsä Wood says the green agenda in construction must shift towards sustainable production of building materials – and timber leads the way as an alternative to steel and concrete 40 4 NEWS Supplement Editor Sarah Johnson Managing Editor James Parker [email protected] FROM Advertisement Manager/ Joint Publisher Anthony Parker [email protected] THE EDITOR Production Assistants Mikey Pooley Shelley Collyer Rob Duncan Kim Musson am fortunate enough to live in a charming if not quirky timber framed cottage with beautiful exposed oak beams. Keen to learn more about its origins, we had an Archaeological Interpretative Survey undertaken. The Editorial Assistants Roseanne Field experts spent hours examining the beams looking for clues; it was like piecing a jigsaw of history together. Jack Wooler I Teodora Lyubomirova The results were equally fascinating, revealing that our house was built in 1520 and is likely to stand on the site of a medieval property from 100 years earlier. Editorial Coordinator Sue Benson We also learned that the oak frame came in kit form and was assembled on site. The historians were keen to Contributors Stephen Cousins point out markings to a beam showing the 16th century builders where to peg joists. According to the survey the Jess Unwin property was “competently carpented using standard pre-fabricated timber-frame techniques.” My home, like Sales Director other historic timber framed buildings, is a testament to how well they stand the test of time and even more so, Lesley Mayo the method in which they were constructed. Sales Executives Suzanne Easter Ian Fletcher Five hundred years later, the use of timber as a construction material is clearly enjoying a resurgence as new Kim Friend Steve Smith engineered timber materials offer a modern, off-site, pre-fabricated solution while wood buildings become a viable option to steel or concrete. Hybrid buildings using wood in combination with other construction Circulation/Reader Enquiry Service materials, are also allowing architects and engineers to design and build taller and more technically challenging Jane Spice composite buildings. Managing Director Simon Reed One excellent example is the 31 m tall Opalia in Paris which Jess Unwin reports upon in this supplement. Built mainly of wood using cross-laminated timber with Douglas Pine wood cladding, it has a steel ring beam round netMAG media the edge of each floor plate, a concrete lift and below ground level concrete for rigidity. publishing – vertical search netMAGmedia Ltd Cointronic House Not only are engineered woods like CLT driving the construction of larger timber buildings worldwide, they are Station Road, Heathfield East Sussex, TN21 8DF also providing advantages to smaller scale projects. Experts tell us that precision-engineered factory manufactured panels are light, and easy to transport and erect in tight spaces, as well as being fast and clean to Advertising & Administration install without reliance on other trades and clement weather conditions. t 01435 863500 f 01435 863897 [email protected] With the UK’s housing shortage in crisis, more factory-built homes using modular construction are emerging. www.architectsdatafile.co.uk Legal & General Capital (LGC) has announced its modular housing business having signed a long-term lease Press Releases 2 [email protected] with Logicor on a 550,000 ft warehouse in North Yorkshire. Legal & General says it is the largest modular homes construction factory in the world, with the homes producted being precision-engineered using CLT and automated technology. Contrary to widespread misconceptions that using wood destroys forests, sustainable forest management ensures Annual subscription costs just £48 plentiful, renewable timber. Wood also functions as a natural carbon sink, absorbing CO2 in the atmosphere and for 12 issues, including post and packing. Phone 01435 863500 for storing it. From construction processes to the well being of occupants, using wood in architecture is part of our details. Individual copies of the publication are available at £5 each sustainable future. inc p & p. All rights reserved No part of this publication may be reproduced or transmitted in any form or by any means, electronic, Sarah Johnson mechanical, including photocopying, recording or stored in any information Editor retrieval system without the express prior written consent of the publisher. Although every effort is made to ensure the accuracy and reliability of material published in Architects TIMBER IN adf On the cover... ARCHITECTURE 10.16 Datafile, the publisher can accept no Stanbrook Abbey, shortlisted in the education & responsibility for the claims or opinions made by contributors, public sector section of the 45th annual Wood manufacturers or advertisers. Editorial contributors to this journal Awards. Go to page 27. may have made a payment towards the reproduction costs of material used to illustrate their products. The manufacturer of the paper used within our publication is a Chain-of- Custody certified supplier operating within environmental systems certified to both ISO 14001 and EMAS in order to ensure sustainable production. Printed in England WWW.ARCHITECTSDATAFILE.CO.UK ADF OCTOBER 2016 NEWS 5 TIMBER ENGINEERING Greeting the future with a Smile A collaboration between the American Hardwood Export Council (AHEC), Alison Brooks Architects, Arup and the London Design Festival has resulted in a landmark urban installation that aims to change the way architects and engineers consider timber construction. Recently opened on the Rootstein Hopkins Parade at Chelsea College of Arts, for the 2016 festival, the Smile is con- structed in cross-laminated American hard tulipwood. It has been hailed as one of the most important developments in structural timber innovation – Andrew Lawrence of project engineer Arup called it “the most complex structure ever built in cross-lami- nated timber (CLT).” The public are allowed to explore the inside of the showcase tulipwood structure. Although a spectacular 34 m in length it’s only 3.5 m high and 4.5 m wide, however the first ever hardwood mega-tube is sur- prisingly light and spacious inside. Gracefully curved 12 m open-ended can- tilevered arms rise gradually towards the light and touch the ground at the centre point like a wheel, providing both a visitor entrance and an engineering challenge. Walking from one end to another is an illu- minating, sensory journey of texture, colour and scale. Tulipwood has strong sustainability cre- dentials, as every year twice as much tulip- wood timber grows in the hardwood forests of America than is harvested. Growing natu- rally tall, straight and strong for its weight, it is easy to machine and an ideal material for innovative timber construction using formed from short lengths of finger long to fasten the panels together. To CLT, which is usually made from softwood. jointed timber, stacked and glued in prevent it rocking, the Smile is anchored to Alison Brooks commente: “Tulipwood alternating layers and vacuum pressed. a wooden cradle filled with 20 tonnes of can be selected clear and knot-free, offer- During this process the Smile’s CLT panels steel counterweights. Inches below the ing a really clean-looking alternative to were curved. cradle are the remains of the 19th century softwoods,” adding: “I wanted to create Andrew Lawrence of Arup commented Millbank prison. The structure is designed something that uses tulipwood CLT in its on the engineering challenge: “not only to resist about 10 tonnes of wind loading largest format possible (4.5 m x 20 m does the Smile have a double cantilever, but and glulam beams hidden in the roof give plates), and to express the additional the entrance is also placed right at the it rigidity. strength hardwood CLT can offer. The best centre where the stresses are highest. If you David Venables, AHEC’s European direc- way to do this was to combine these plates turned the structure vertically and added tor says, “The Smile is important. It’s effec- into a four-sided CLT hollow tube. One of the weight of 60 visitors one end, it’s equiv- tively the latest stage in a 10 year project the most amazing qualities of the Smile is alent to the core stabilising a five-storey that challenges the way hardwood can be the thinness of the majority of its wall and building.