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• ~~ <br />J <br />• <br /> <br />203.08 <br />Additional work involved in drying embankment material to the required moisture <br />content shall be included in the contract price paid for excavating or famishing the <br />material with no additional compensation. <br />Density requirements will not apply to materials which cannot be tested in accordance <br />with any of the above procedures for determining maximum dry density. Compaction <br />for materials which cannot be tested shall be in accordance with subsection 203.08. <br />The percent of relative compaction specified shall be equal to or greater than <br />minimum values as shown in the following table for the various classes of soil and <br />type of compaction. <br /> <br />Claystone or soil-like non-durable shale shall be pulverized and compacted to the <br />specified moismre and percent of relative compaction and shall be compacted with a <br />heary tamping foot roller, weighing at least 30 tons. Each tamping foot shall protrude <br />from the drum a minimum of 4 inches. Each embankment layer shall receive a <br />minimum of three or more coverages with the tamping foot roller to obtain density. <br />One coverage consists of one pass over the entire surface designated. One pass <br />consists of the passing of an acceptable tamping foot roller over a given spot. The <br />roller shall be operated at a uniform speed not exceeding 3 miles per hour. No <br />additional compensation will be made for additional roller coverages [o achieve <br />specified density requirements <br />Soil Classification <br />(AASHTO M 145) <br />A-1 <br />A-3 <br />A-2-4 <br />A-2-5 <br />All Others <br />AASHTO T 99 <br />Minimum Relative <br />Compaction (Percent) <br />100 <br />100 <br />100 <br />100 <br />95 <br />AASHTO T 180 <br />Minimum Relative <br />Compaction (Percent) <br />95 <br />95 <br />95 <br />95 <br />90 <br />203.08 Construction of Embankments without Moisture and Density Control. <br />Rock embankment material shall be placed in layers in accordance with the <br />requirements of subsection 203.06. <br />Each layer of rock embankment material shall be compacted by routing construction <br />equipment, compactors, or both, uniformly over the entire surface of each layer <br />before [he next layer is placed. At least one compactor shall be in simultaneous <br />operation with each separate rock embankment placement operation. Specific types of <br />compactors shall be famished and used when required by the Contract. <br />Each layer of rock embankment shall not be covered by another layer until the <br />Engineer is satisfied that adequate compaction has been obtained. If the Engineer <br />determines that [he compactive effort is unsatisfactory, the Engineer may order the <br />Contractor to compact the unsatisfactory area by two additional passes using approved <br />compaction equipment. <br />145 <br /> <br />