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Improved Engineered Wood Fiber (EWF) Surfaces for Accessible Playgrounds

Download this file (ewf-2003.pdf)

FINAL REPORT: Phase IIRotational penetrometer is used to measure the firmness and stability of test surfaces (photo).

Field Performance Testing

March, 2002 – January, 2003

USDA Forest Service and U.S. Access Board

prepared by:
Theodore Laufenberg and Jerrold Winandy
Performance Engineered Composites
USDA-Forest Service, Forest Products Laboratory
One Gifford Pinchot Drive, Madison, WI 53726

The project was conducted cooperatively with the United States Architectural and Transportation Accessibility Compliance Board (U.S. Access Board).


Bill Botten for guidance in initiating this phase of the Stabilized EWF concept’s development. Ted Illjes and Doug Zeager for performing the F1292 impact tests, Zeager Brothers, Inc. for donating EWF materials. Andrzej Krzysik, Benjamin Henderson, Vicki Herian, Carl Syftestad, Nancy Keen, Al Christiansen, Lloyd Currier, and other staff of the Forest Products Laboratory for their assistance during the project.