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picture1_Building Pdf 84079 | Publications Bp4 Woodframehousing


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File: Building Pdf 84079 | Publications Bp4 Woodframehousing
canadian conseil wood canadien council du bois wood frame wood frame housing housing a north a north american american marvel marvel building performance series no 4 wood the choice for ...

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                                                       Canadian   Conseil
                                                       Wood       canadien
                                                       Council    du bois
                                                 Wood-Frame 
                                                 Wood-Frame 
                                                      Housing – 
                                                      Housing – 
                                                             A North 
                                                             A North 
                                                         American 
                                                         American 
                                                               Marvel
                                                               Marvel
       Building Performance Series No. 4
             Wood – The Choice for Builders                            Strong winds… heavy snow loads… high humidity…
                                                                       extreme temperatures – whatever your building 
                                                                       challenges, wood-frame housing has proven technical
                         orth Americans enjoy the highest standard     solutions to overcome any problem.
                         of safe and comfortable housing in the        Wood sells houses. In addition to the shelter, warmth
             Nworld. This is not by chance – wood-frame                and safety provided by the wood structure, buyers
                                                                       recognize and appreciate the aesthetic value of wood
             construction is the residential building system of        for exposed applications like cabinetry, flooring, 
             choice and many countries wishing to improve the          furniture and moldings.
             comfort and security of their citizens are adopting it.   Not only is wood builder-friendly, it is also environ-
                                                                       mentally friendly. Wood products take less energy to
                                                                       manufacture, affect the environment less than other
             North America is blessed with resources of all kinds.     materials, and they come from North American
             A continuing abundance of forest resources has,           forests that are abundant and increasing in size. 
             since the earliest settlers, encouraged using wood 
             to build housing.                                         So Simple Yet So Effective
             Today, as designers, builders and homeowners pursue       Wood-frame construction combines dimension 
             safe, energy efficient housing that is easy on the        lumber or engineered wood products and structural
             environment and can perform in the face of major          wood panel sheathing to make wall, floor and roof
             challenges like high winds and earthquakes, there         assemblies that are robust and fast to build. The
             are stronger reasons than ever to build with wood.        assemblies are tough, easy to connect and easy to insu-
             Wood-frame construction is strong, durable, easy          late. It is a building technology that has been applied
             to insulate, easy to renovate and delivers value. It is   millions of times. In fact, about a million new wood
             backed by two hundred years of proven performance         houses are built every year in North America. 
             and a wealth of research and new product develop-
             ment to make it better than ever. And it is the only
             major building material that is renewable.
                  Always Thinking Better                                    Builder Know-how
                  What other building material is so easy to work with?     There is a huge reservoir of designers, carpenters,
                  What other structural material can be engineered          supervisors and builders in North America who
                  and glued to make strong, dependable beams and            know how to use wood-frame construction to 
                  columns? What other major building material               create strong and durable buildings. 
                  is renewable?                                             In other parts of the world, there is keen interest in
                  From the manufacturing of complete homes in               how North America builds. That’s why expert crews
                  factories, to the shipping of wall and floor assemblies   from here have fanned out around the world to 
                  in containers to Asia, to the prefabrication of wall      show those looking for economical, durable and 
                  units on site, the modularization of wood-frame           safer housing solutions the wood-frame system that
                  construction delivers cost savings and quality            provides North Americans the best housing in the
                  for builders.                                             world. Whether at home or helping elsewhere, 
                                                                            wood-frame construction is easily learned. The tools
                  The wood industry in North America has developed          are basic, the techniques are proven, and years and
                  several technologies that reduce building costs and       years of experience have resulted in tricks of the
                  speed construction. Made popular by the invention         trade that save time. The building materials are
                  of the metal plate in the 1950’s, there is simply         tough, light, and easy use.
                  nothing that challenges wood trusses for roofing          Most builders appreciate wood-frame construction
                  applications. Designed and manufactured under             for its proven history of performance, its ease 
                  exacting factory conditions, wood trusses offer           of use, its availability and its value in relation to 
                  quality, performance and flexibility. Virtually any       its cost.
                  roof shape or loading can be accommodated.
                  The search for better ways of doing things has resulted   Easy Renovation – A Big Selling Feature 
                  in the commercial successes of new products like
                  wood I-joists and laminated veneer lumber (LVL).          The National Association of Home Builders estimates
                  These products, the outcome of continual innovation       homeowners spent $160 billion on remodelling in
                  and evolution, provide consistent engineering proper-     2001. Whether remodelling involves increasing the size
                  ties, dimensional stability, higher strength to weight    of a house or rearranging existing space, wood-frame
                  ratio and reliability. Their long-span capabilities give  construction is easier to modify.
                  new flexibility for open span layouts and make            This ease of modification is an important feature 
                  building faster.                                          for buyers of both new homes and existing homes. It
                  Every innovation has brought features that help           allows them to economically alter their houses to suit
                  builders build it right the first time – machine stress-  changing needs. When it comes to remodelling, wood
                  rating improves predicted strength; finger-joining        is unmatched in how easily changes can be made.
                  produces straighter studs; and laminated beams            Thinking of adding a window to that concrete wall
                  including LVL, PSL, LSL provide higher strengths          in the bedroom or moving the wall out three feet to
                  and larger dimensions. Innovations in floor systems       enlarge the room? 
                  like screwing and gluing reduce squeaks and increase
                  strength. Engineered wood products are not only
                  making better houses, their strength and long-span
                  capabilities make them a cost-effective choice for
                  commercial and industrial buildings.
                  So, whether you build on site, purchase manufac-
                  tured wall and floor units, or a complete house, 
                  wood and engineered wood products offer all kinds
                  of possibilities to suit your preferences and those of
                  your customers.
                 Wood-Frame Housing – A North American Marvel                                                                       3
                 Taking on All Challenges                                                  Light metal framing reduces the effective R-value 
                                                                                           of a wall assembly almost 50%.
                 North America has comprehensive building codes
                 intended to provide high levels of health and 
                 safety – a material can be used as long as it                              R-VALUE
                 provides the performance required by the codes.                              12
                 No housing material comes close to matching the                              10
                 years of performance and technical foundation 
                 of wood-frame construction. Building codes have                               8
                 approved wood requirements based on proven 
                 performance that is supported by research institu-                            6
                 tions like the Forest Products Laboratory (FPL) in                            4
                 Madison, Wisconsin. FPL has served since 1910 as
                 the nation’s leading wood research institute, working                         2
                 with many universities, industries, and federal and
                 state agencies. Today, more than 250 scientists and                           0
                                                                                                    CLEAR    CORNER   ROOF/    WALL/  WINDOW/   DOOR/   OVERALL 
                 support staff are engaged in expanding knowledge in                                WALL              WALL    CEILING   SIDE     SIDE    WALL
                 areas as diverse as building performance, new mate-                                        Wood Studs    Steel Studs
                 rial development and developing environmentally
                 friendly technology.                                                            Source: 
                                                                                            FIGURE 1 – Thermal Resistances of Wall Components with 
                 And this is only the tip of the iceberg. In addition                                   R-12 Insulation
                 to FPL, a multitude of companies and universities 
                 in the US and Canada are engaged in constantly                            reduces the effective thermal resistance, or R-value,
                 improving the materials and techniques that make                          of a wall assembly by almost 50% resulting in
                 North American wood-frame construction an                                 increased energy use (Figure 1). 
                 ongoing success story.
                                                                                           Wood-frame construction is easy to insulate to 
                 Keeping Energy Bills Down                                                 high standards. Several jurisdictions have developed
                                                                                           advanced wood-frame construction techniques 
                 Wood framing means comfort and economy when                               (E Seal, Super E™ and R-2000) that exceed existing
                 it comes to keeping you warm in winter and cool                           standards for R-value and air-tightness. Wood-frame
                 in summer. Wood is a good insulator because of                            assemblies are the common choice for the extreme
                 its cellular structure – 400 times better than steel.                     cold of the far north. 
                 The real advantage comes from the better overall                          Wood-frame construction can easily be adapted to
                 assembly performance of wood-frame construction.                          any energy code requirement. This means wood-
                 Heating and cooling costs are a significant portion                       frame houses, offices, schools, and other commercial
                 of the cost of running a household, and low energy                        and industrial buildings can keep energy bills for
                 usage is a very important feature for homebuyers.                         heating and cooling low. 
                 While wood has always had a good reputation for                           For more information about the insulating advantage
                 being easy to insulate to high standards, steel and                       of wood-frame construction, see:
                 concrete must overcome problems from thermal
                 bridging, and the possible consequence of moisture                        1. E Seal: http://www.eei.org/esg/e_seal/
                 condensation on cold surfaces.                                            2. Thermal Performance of Light-Frame Assemblies:
                 Laboratory tests conducted at the National Research                           http://www.cwc.ca/publications/tech_bulletins/
                 Council of Canada and the Oak Ridge National                              3. Super E TM: http://www.super-e.com/html/
                 Laboratory show that light metal framing significantly                        english/general/gen-what.html
            4                                                                                                  Building Performance Series No. 4
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...Canadian conseil wood canadien council du bois frame housing a north american marvel building performance series no the choice for builders strong winds heavy snow loads high humidity extreme temperatures whatever your challenges has proven technical orth americans enjoy highest standard solutions to overcome any problem of safe and comfortable in sells houses addition shelter warmth nworld this is not by chance safety provided structure buyers recognize appreciate aesthetic value construction residential system exposed applications like cabinetry flooring many countries wishing improve furniture moldings comfort security their citizens are adopting it only builder friendly also environ mentally products take less energy manufacture affect environment than other america blessed with resources all kinds materials they come from continuing abundance forest forests that abundant increasing size since earliest settlers encouraged using build so simple yet effective today as designers homeo...

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