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1. In asphalt paving, ruts or grooves that may develop in the wheel tracks of a pavement; may result from consolidation or lateral movement under traffic in one or more of the underlying courses, or by displacement in the asphalt surface layer itself; they may develop under traffic in new asphalt pavements that had too little compaction during construction or from plastic movement in a mix that does not have enough stability to support the traffic. 2. Hot or cold-rolled steel, of various sizes, used for furring, studs and in suspended ceilings.

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