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| Case Studies | ||
| Recycled Plastic Pedestrian Bridge, Meadowbrook Pond by Pamela Miller | ||
| The Main Bridge on the Meadowbrook Pond site is four hundred feet long and constructed of plastic lumber created from recycled milk cartons. Not only did this choice remove the need to use creosote-treated wood (which would have leached into the water), it will also provide a huge maintenance savings over the coming centuries. The plastic lumber did not turn out to be perfect though. The Meadowbrook construction team made a disappointing discovery. Rex Allen, the resident construction engineer reported, "Contrary to what we'd been told, we discovered when using the plastic 2x4s vertically that they bowed in the middle. As a result we had to reinforce the lumber with reinforced steel." | ||
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http://www.ci.seattle.wa.us/seattle/util/planning/meadowbrook/BRIDGE.HTM |
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