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  1. Improving engineered wood fiber surfaces for accessible playgrounds.

    Some engineered wood fiber surfaces are uneven, tend to shift, and have low density. The goal of our research was to develop a playground surface material that cushions impact and is accessible to people with disabilities. In the initial screening phase, we evaluated a variety of in situ surface treatments and mixtures of wood particles combined with various binders....

    Author(s):
    Theodore Laufenberg; Andrzej Krzysik; Jerrold Winandy
    Year:
    2003
    Keywords:
    Surfacing, impact, accessibility, ADA, composite, polyurethane, cushioning, engineered wood fiber, latex, silicone.
    Source:
    Gen. Tech. Rep. FPL−135. Madison, WI : U.S. Dept. of Agriculture, Forest Service, Forest Products Laboratory, 2003. 15 pages.

  2. Material variability and repetitive member factors for the allowable properties of engineered wood products

    It has been argued that repetitive member allowable property adjustments should be larger for high-variability materials than for low-variability materials. We report analytic calculations and simulations that suggest that the order of such adjustments should be reversed, that is, given the manner in which allowable properties are currently calculated, as the...

    Author(s):
    Steve Verrill; David E. Kretschmann
    Year:
    2009
    Keywords:
    Engineered wood, mechanical properties, lumber, elasticity, mathematical statistics, bending, reliability, computer simulation, loads, probability measures, simulation methods, strength, stiffness, coefficients of variation, COV, statistical analysis, bending strength, D5055 standard, repetitive member factors
    Source:
    Journal of testing and evaluation. Vol. 37, no. 6 (2009): p. 1-9. Paper ID JTE101924.

  3. Field performance testing of improved engineered wood fiber surfaces for accessible playground areas

    Some engineered wood fiber (EWF) surfaces on playgrounds are soft and uneven, which creates difficulties for those who use mobility aids, such as wheelchairs and walkers. The outdoor field testing reported in this study is part of an effort to stabilize EWF to improve accessibility. The concept is to mix a binder with the upper surface of EWF to create a stiff (firm)...

    Author(s):
    Theodore L. Laufenberg; Jerrold E. Winandy
    Year:
    2003
    Keywords:
    Engineered wood fiber (EWF), accessibility, playground surface, field performance testing
    Source:
    Res. Pap. FPL-GTR-138. Madison, WI: U.S. Department of Agriculture, Forest Service, Forest Products Laboratory. 10 p.

  4. Improving playground surface accessibility

    Could accessibility be improved and maintenance be reduced for wood fiber- based playgrounds? In July 2001, the US Access Board asked the Forest Products Laboratory (FPL) for advice and a potential solution. Since that time new product standards have been adopted by ASTM for engineered wood fiber (EWF), new test techniques have been promulgated by RESNA (Rehabilitation...

    Author(s):
    Theodore L. Laufenberg
    Year:
    2004
    Keywords:
    Playgrounds, surfaces, barrier-free design, fibers, engineered wood fiber
    Source:
    Today's playground. (May 2004): pages 22-26.

  5. Wood fiber supply and demand in the United States.

    The USDA Forest Service is preparing a national assessment of supply and demand for wood fiber resources in the United States. Based in part on preliminary results of this assessment and partly on our 1993 Assessment, this paper outlines trends and gives an outlook for demand and trade for timber and fiber products, changes in technology, and wood fiber resource supply...

    Author(s):
    Kenneth E. Skog; Peter J. Ince; Richard W. Haynes
    Year:
    1998
    Keywords:
    Wood fibers, Wood products, Forest products, Paper, Supply balance, Timber trade, Technical progress
    Source:
    Proceedings of the Forest Products Study Group workshop : held at the Forest Products Society annual meeting, June 23, 1998, Merida, Yucatan, Mexico. [Madison, Wis.] : Forest Products Society, c2000.:p. 73-89 : ill.
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