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Alternative Title:2009 New Jersey Department of Transportation FWD procedures manual;2009 NJDOT falling weight deflectometer procedures manual;2009 New Jersey Department of Transportation falling weight deflectometer procedures manual;New Jersey Department of Transportation FWD procedures manual;NJDOT falling weight deflectometer procedures manual;New Jersey Department of Transportation falling weight deflectometer procedures manual;NJDOT FWD procedures manual 2009;
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Abstract:A falling weight deflectometer (FWD) is a device designed to simulate deflection of a pavement surface caused by a fast-moving truck. The FWD generates a load pulse by dropping a weight onto the pavement surface. This load pulse is transmitted to the pavement through a 300 (mm) 11.8 inch diameter circular load plate. The load pulse generated by the FWD momentarily deforms the pavement under the load plate into a dish or bowl shape. Envisioned from a side view, the shape of the deformed pavement surface is a deflection basin.
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