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Wood Utilization—Wood Industry in North America

Learn about the amount of wood used in building a 2000 sq ft wood-framed house, including lumber and structural panels. Discover the advantages of engineered wood products and the importance of protecting wood from enemies like fires and termites. Explore the environmentally friendly practices of the wood industry and the top ten significant forest product technologies developed.

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Wood Utilization—Wood Industry in North America

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  1. Wood Utilization—Wood Industry in North America

  2. How much wood is used in building a house? For a 2000 ft2 wood-framed house • 16,2000 board ft. (1 bf = 1’ x 1’ x 1”) Lumber or 1,350 ft3 or 20.5 m3 or 20 pine trees (30” DBH) • Plus 9,500 ft2 (based on 0.5” thick) Structural Panels or 400 ft3 or 300 4’ x 8’ x 0.5” sheets of Plywood, OSB, or Hardboard for sheathing, decking & siding • Wood for decks and non-structural panels are extra

  3. Lumber • Solid lumber is good but subjects to availability and variability in physical properties • Can be substitutes by engineered wood products, such as Parallel Strand L, I-joist, Laminated Veneer L and Laminated Strand L Plus Glue-laminated Timber Glulam PSL I-Joist LVL LSL

  4. Advantages of Engineered Products • Value-added and conservative These products made from materials of lower grades and processing residues • Predictable physical properties and performances

  5. Disadvantages • Wood is good but needs to be protected from many enemies Fires destroy houses And billions of dollars Property lose annually Along with 12,200 fatalities

  6. Enemies of Wood • Termites also destroy houses Annual property lose: 250 M$ Costs 125 M$/yr in Corrective measures.

  7. Wood Decays Millions are spent annually to repair houses due to decay My Pella window decayed Bath room leakage causes decay A brown-rot fungus is eating up the wood Only because of inproper installation!

  8. The wood industry is proud to be environmentally friendly • A survey was conducted in 1996 by the Forest Products Laboratory to identify Top Ten Most Significant Forest Products Technologies

  9. Here They Are #1 Development of wood preservative treatments to extend the service life of wood --How many trees saved? #2 Oriented Strand Board manufacturing --Use low-value species and milling residues

  10. #3Manufacturing paper from hardwood and wood wastes --Again, saving more valuable softwoods #4 Technology for plywood production from Southern pine --Saved many big Douglas fir and larch trees

  11. #5 Methods to utilize alternative/low-value species #6 Methods of processing small logs --Computer technologies make it possible #7 Development of composite products from waste or low-value woods/fibers including hardboard, particleboard, medium density fiberboard, wood/plastic composites

  12. #8 Development of recycling technologies for paper, wastewood and agricultural fibers #9 Development of non-toxic wood preservatives #10 Technology transfer to the forest products industry

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