A plant will produce 350 tph for a project. The mat will be 12 ft wide and 1 1/2 in. thick and will have a density of 112 Ib/sy-in. A vibratory roller with a 60-in.-wide drum will be used for compaction. Assume a 55-min hour efficiency factor for the roller. The overlap between adjacent laps a
A plant will produce 350 tph for a project. The mat will be 12 ft wide and 1 1/2 in. thick
and will have a density of 112 Ib/sy-in. A vibratory roller with a 60-in.-wide drum will
be used for compaction. Assume a 55-min hour efficiency factor for the roller. The
overlap between adjacent laps and overedges will be 6 in. minimum. It is estimated
that nonproductive travel will add 15% to total travel. From a test mat, it was found
that three passes with the roller are required to achieve density. To account for
acceleration and deceleration when changing directions, add 10% to the average
roller speed to calculate a running speed. What is the required roller speed if only one
roller is available?
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