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Author : Theodore Laufenberg
Publisher :
ISBN 13 :
Total Pages : 16 pages
Book Rating : 4.:/5 (319 download)
Download or read book Stabilized Engineered Wood Fiber for Accessible Trails written by Theodore Laufenberg and published by . This book was released on 2004 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Theodore Laufenberg
Publisher :
ISBN 13 :
Total Pages : 16 pages
Book Rating : 4.:/5 (319 download)
Download or read book Stabilized Engineered Wood Fiber for Accessible Playground Surfaces written by Theodore Laufenberg and published by . This book was released on 2004 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Theodore Laufenberg
Publisher :
ISBN 13 :
Total Pages : 20 pages
Book Rating : 4.:/5 (319 download)
Download or read book Improving Engineered Wood Fiber Surfaces for Accessible Playgrounds written by Theodore Laufenberg and published by . This book was released on 2003 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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. Engineered wood fiber (EWF) was prepared from three species, red maple, ponderosa pine, and one-seed juniper, which have a wide range of densities and bonding properties. In the scale-up phase, we evaluated commercially available EWF and several promising binding systems from the screening phase trials. Seventeen test configurations were formed in plywood boxes, using different levels of EWF compaction, fiber moisture content, surface layer thickness, and types of binders. Binder systems that show promise for surface stabilization and satisfactory impact behavior are polyurethane, latex, and silicone. These binders were chosen on the basis of processing ease, flexibility (elongation to failure), cost, and safety in application and use. In this report, we identify the strengths and weaknesses of the surface treatments, review the viability of the systems and the testing concepts we have developed, and identify further research needs.
Author : Theodore Laufenberg
Publisher :
ISBN 13 :
Total Pages : 11 pages
Book Rating : 4.:/5 (2 download)
Download or read book Stabilized Engineered Wood Fiber for Accessible Playground Surfaces written by Theodore Laufenberg and published by . This book was released on 2004 with total page 11 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Theodore Laufenberg
Publisher :
ISBN 13 :
Total Pages : 16 pages
Book Rating : 4.:/5 (319 download)
Download or read book Field Performance Testing of Improved Engineered Wood Fiber Surfaces for Accessible Playground Areas written by Theodore Laufenberg and published by . This book was released on 2003 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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) and scuff-resistant (stable) composite overlayer. Latex, silicone, and polyurethane binders were evaluated on small plots during a 6-month outdoor trial in Wisconsin. Tests were performed at regular intervals to?provide a quantitative measure of accessibility. After 6 months of exposure, all the surfaces passed the existing specifications for impact attenuation of playground surfaces. Exposure changed impact performance of all systems except the unsurfaced (without an additive) EWF. The latex and?polyurethane stabilizers consistently met accessibility requirements. One polyurethane formulation produced a hard brittle shell that became even harder with exposure and age, which might increase the injury rate for falls on that surface. The silicone system failed to maintain integrity adequately?during the rain/dry cycles of the test. Moisture measurements indicate that the bonded surfaces retard drying of the underlying EWF, which may have long-term implications for the rate of decay for these systems.
Author : T. L. Laufenberg
Publisher :
ISBN 13 :
Total Pages : 11 pages
Book Rating : 4.:/5 (78 download)
Download or read book Stabilized Engineered Wood Fiber for Playground Surfaces written by T. L. Laufenberg and published by . This book was released on 2004 with total page 11 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Theodore L. Laufenberg
Publisher :
ISBN 13 :
Total Pages : 2 pages
Book Rating : 4.:/5 (111 download)
Download or read book Engineered Wood Fiber Surfaces Improve Accessibility for Americans with Disabilities written by Theodore L. Laufenberg and published by . This book was released on 2005 with total page 2 pages. Available in PDF, EPUB and Kindle. Book excerpt: What is the preferred playground safety surface material in the United States today? The answer is engineered wood fiber (EWF). EWF is the technical name for a loose, mulch-like mixture of hardwood chips that meets certain specifications regarding chip size and shape, consistency, drainage, impact attenuation, and other qualities. At a cost of just $1.00/ft2 to cushion a 10-ft fall height, the loosely piled wood chips are a cost-effective way to increase playground safety. However, as playground designers incorporate accessibility features into their designs, traditional EWF does not meet their needs.
Author : Theodore Laufenberg
Publisher :
ISBN 13 :
Total Pages : 11 pages
Book Rating : 4.:/5 (2 download)
Download or read book Stabilized Engineered Wood Fiber for Accessible Trails written by Theodore Laufenberg and published by . This book was released on 2004 with total page 11 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Theodore Laufenberg
Publisher :
ISBN 13 :
Total Pages : 15 pages
Book Rating : 4.:/5 (2 download)
Download or read book Improving Engineered Wood Fiber Surfaces for Accessible Playgrounds written by Theodore Laufenberg and published by . This book was released on 2003 with total page 15 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Theodore Laufenberg
Publisher :
ISBN 13 :
Total Pages : 15 pages
Book Rating : 4.:/5 (249 download)
Download or read book Improving Engineered Wood Fiber Surfaces for Accessible Playgrounds written by Theodore Laufenberg and published by . This book was released on 2003 with total page 15 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : T. L. Laufenberg
Publisher :
ISBN 13 :
Total Pages : 10 pages
Book Rating : 4.:/5 (78 download)
Download or read book Field Performance Testing of Improved Engineered Wood Fiber Surfaces for Accessible Playground Areas written by T. L. Laufenberg and published by . This book was released on 2003 with total page 10 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Theodore Laufenberg
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (254 download)
Download or read book Stabilized Engineered Wood Fiber for Accessible Trails written by Theodore Laufenberg and published by . This book was released on 2004 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book STABILIZED ENGINEERED WOOD FIBER FOR ACCESSIBLE TRAILS... INSTALLATION AND SERVICABILITY..., GENERAL TECHNICAL REPORT FPL-GTR-155... U.S. DE. written by and published by . This book was released on 2005* with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Theodore Laufenberg
Publisher :
ISBN 13 :
Total Pages : 10 pages
Book Rating : 4.:/5 (112 download)
Download or read book Field Performance Testing of Improved Engineering Wood Fiber Surfaces for Accessible Playground Areas written by Theodore Laufenberg and published by . This book was released on 2003 with total page 10 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Publisher :
ISBN 13 :
Total Pages : 64 pages
Book Rating : 4.:/5 (319 download)
Download or read book Research & Development written by and published by . This book was released on 2007 with total page 64 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Publisher :
ISBN 13 :
Total Pages : 56 pages
Book Rating : 4.:/5 (319 download)
Download or read book FS Today written by and published by . This book was released on 2005 with total page 56 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Publisher :
ISBN 13 :
Total Pages : 36 pages
Book Rating : 4.3/5 (117 download)
Download or read book Conserving our forests since 1910 written by and published by . This book was released on 2003 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt:
