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<br /> <br />301 control, and the soil upon which the embankments are to be constructed shall be scarified to a <br />302 depth of 6 inches and compacted with moisture and density control. The moisture content of the <br />303 soil at the time of compaction shall be as specified or directed. ' <br />304 <br />305 The material shall be removed from the full width of roadbed in all cut sections to the designated <br />306 depth. The soil below the designated depth shall be thoroughly scazified to a depth of 6 inches ' <br />307 and the moisture content increased or reduced, as necessary, to obtain the moisture content <br />308 specified. This scarified layer shall then be compacted to the relative compaction specified. <br />309 <br />310 All embankment material shall also be compacted to the specified relative compaction. <br />311 <br />312 Maximum dry density of all soil types encountered or used will be deteimined in accordance <br />313 with AASHTO T 99, AASHTO T 180, or a modification thereof. <br />314 <br />315 <br />The amount of water to be used in compacting A-2-6, A-2-7, A-4, and A-6 through A-7 soils <br />316 shall not deviate from optimum on the dry side by more than two percentage points as <br />317 determined by AASHTO T 99, T I80, or a modification thereof, as designated in the Contract. <br /> <br />318 <br />A-4 soils which are unstable at the above moisture content shall be compacted at a lower ' <br />319 moisture content to the specified density. The amount of water used in corripacting all other soils <br />320 shall be as required to obtain the percent relative compaction required. <br />321 <br />322 Additional work involved in drying embankment material to the required :moisture content shall <br />323 be included in the contract price paid for excavating or furnishing the material with no additional <br />324 compensation. <br />325 <br />326 Density requirements will not apply to materials which cannot be tested in accordance with any <br />327 of the above procedures for determining maximum dry density. Compaction for materials which <br />328 cannot be tested shall be in accordance with subsection 203.08. <br />329 <br />330 The percent of relative compaction specified shall be equal to or greater than minimum values as <br />331 shown in the following table for the various classes of soil and type of compaction. <br />332 <br />333 Claystone or soil-like non-durable shale shall be pulverized and compacted to the specified <br />334 moisture and percent of relative compaction and shall be compacted with a heavy tamping foot <br />335 roller, weighing at least 30 tons. Each tamping foot shall protrude from the drum a minimum of 4 <br />336 inches. Each embankment layer shad receive a minimum of three or mare coverages with the <br />337 tamping foot roller to obtain density. <br />338 <br />339 One coverage consists of one pass over the entire surface designated. One pass consists of the <br />340 passing of an acceptable tamping foot roller over a given spot. The roller shall be operated at a <br />341 uniform speed not exceeding 3 miles per hour. No additional compensation will be made for <br />342 additional roller coverages to achieve specified density requirements. <br />343 <br /> <br /> <br /> 3_g <br /> R-\10100100.02W\Reports\KP~Tediniral fipaciTrations Da February 3, 2006 <br /> <br />