Architecture Canada n°6 1er semestre 2009
Architecture Canada n°6 1er semestre 2009
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  • Parution : n°6 de 1er semestre 2009

  • Périodicité : semestriel

  • Editeur : Naylor Canada

  • Format : (213 x 276) mm

  • Nombre de pages : 52

  • Taille du fichier PDF : 3,5 Mo

  • Dans ce numéro : l'Institut royal d'architecture du Canada.

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ENVIRONMENTALLY FRIENDLY MOLD AND MILDEW RESISTANT WATER RESISTANT FIRE RESISTANT EASY TO INSTALL Superior Moisture Resistance Environmentally Friendly Excellent Workability 15 Year Warranty Plus backer board & building panels GOOD BETTER BEST Lifetime Transferable Warranty JONA-Ply underlayment is specifically designed and manufactured for JONA Panel Sales by the Potlatch Corporation, a verified leader in sustainable forestry. JONA-Ply is certified by the Scientific Certification Systems to be harvested from forests that meet stringent environmental, social and economic standards. JONA-Ply XP underlayment is manufactured using a melamine resin and offers a smooth solid construction that will performwell over the lifetime of your floor. JONA-Ply XS underlayment offers a quality and dimensionally stable product at an economical price. EnStron is made from quality pine and northwest white wood fibers which provide a uniformcolour. The wood from Lauan plywood carries natural acids that can cause bleed-through and staining of vinyl floor coverings. EnStron Plus features a special moisture-resistant formula designed specifically for high-moisture conditions. You get better panel stability, with the same warranty and same easy installation. EnStron Terramica combines all of the environmental benefits of a 100% preconsumer recycled wood fiber and no Urea Formaldehyde added engineered wood product with the highest quality standards you’d expect. In fact, third party verification shows formaldehyde emissions no greater than those you’d find in outdoor air. Head Office : 625 Devonian Avenue, Kelowna, BC V1W 4Z8• Ph : 250-764-7595/Fax : 250-764-3203 Eastern Sales Office : 187 Hawthorne Road, Atikokan, ON P0T 1C0• Ph : 807-597-2425/Fax : 807-597-2604 www.jonapanels.com
St. Mary High School New, greener life for a school in Prince Albert Across the country in Saskatchewan, AODBT Architecture Interior Design transformedan aging, existing high school in downtown Prince Albert into a sustainable structure that is 25 per cent more effi cient than prescribed by the Model National Energy Code. Opened in 2003, the new St. Mary High School replaced the original building, which was built in 1968 using pre-cast concrete for the walls, fl oors and roof. The only Roman Catholic school in the small prairie city, it had a « very institutional appearance, with very few windows, » says AODBT’s Lawrence Dressel, MRAIC, the design architect on the $11-million project. Designed to accommodate 600 students, the original school was also undersized for a student population that numbered 800. But the initial plan by the Prince Albert Catholic School Board was to sell the building and construct a new high school on a green fi eld suburban location near some of the newer neighbourhoods. Although the mechanical and electrical systems were completely outdated, and the fi nishes were in poor condition, the pre-cast skeleton of the building was « virtually indestructible » and considered too good to abandon, says Dressel. « The board reluctantly agreed to consider a redevelopment, so we accepted the challenge of making the project so good that it would convince others that this was a better choice than a new, suburban building. » Through analysis of the existing site and building, several opportunities were identifi ed to introduce natural light into the school, and maximize the area allowed through mezzanines and lower-level development made possible by taking advantage of a nearly two-metre cross slope through the site. « So, we could do a walk-out basement that added an extra level to the original two-storey school, » explains Dressel, who says the new St. Mary can now accommodate about 1,100 secondary students. To better track the heat load, the heating plant consists of a module natural gas-fi red, hot water boiler package. The fi ring of each module is staged to keep the boiler operation at maximum effi ciency. The ventilation systems are complete with variable frequency drives on the supply air and return air fan motors. The speed and output of each fan is controlled by the needs of the building. Once temperature and ventilation reach their desired rates, the fans throttle back to save energy. As well, the ventilation systems come with heat-reclaim equipment. When air is exhausted from the building, the heat in the exhaust air is extracted and added to the outside air drawn in. This design feature saves a signifi cant amount of energy during the winter, according to engineer Bryan Hooker of HAD Engineering Ltd., which was involved in the project. In addition, the HVAC system serving the school comes with a computerized BMS. So at High-Performance Schools night the fans and heating system drop the temperature and ventilation rate back until morning when the school reopens, explains Hooker. (A separate unit is in place for the gym, which is used during the evening and on weekends.) « The redevelopment created a new sense of pride for the students, » says Dressel. « One of the more popular features is the atrium space that forms the student commons. It provides natural light to many areas of the school, and the volume of this space forms part of the air-change system for the building. » Green design is elementary in Burnaby And fi nally to the west in British Columbia, Taylor Park Elementary School in Burnaby follows a unique approach to sustainability. « There are no ducts in the classrooms, which totally rely on natural ventilation, » explains Peter Rayher, chief design architect with New Westminster, B.C.-based CJP Architects Ltd. and the lead architect on the school project. Fresh air from outside is supplied at perimeter water heating baseboards and exhausted through translucent-polycarbonatecovered atria by low static fans. Only the gym, multipurpose room and administrative area have ducts and use an air-to-air heatreclaim system. « The number of air changes to the classrooms are calculated using computer simulation, » THE ROYAL ARCHITECTURAL INSTITUTE OF CANADA/L’INSTITUT ROYAL D’ARCHITECTURE DU CANADA ■ 19 AODBT ARCHITECTURE & INTERIOR DESIGN LTD. | PHOTOS : JERRY HUMENY/BLACK BOX IMAGES www.raic.org/2009



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