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<br />203.06 <br />construct a compact, stable fill and to finish [he slopes [o a neat and smooth <br />appearance. Each layer shall be compacted as specified in subsection 203.08. <br />Rock fill, or claystone or soil-like non-durable shale, or both shall not be constructed <br />above an elevation 2 feet below the finished subgrade. The top 2 feet of the <br />embankment shall be placed in layers not to exceed 8 inches loose thickness and <br />compacted in accordance with subsections 203.07 and 203.08 as applicable. <br />When a rock fill is placed over any structure, the strucmre shall be covered with a <br />minimum of 2 feet of compacted embankment material or other approved material <br />before the rock is placed. <br />Cross hauling may be used to insure [hat the best available material is placed in the top <br />2 feet of all embankments. When directed by the Engineer, cross haul will be paid for <br />in accordance with subsection 109.04. <br />Frozen materials shall not be used in construction of embankments. <br />During the construction of [he roadway, the roadbed shall be maintained so that it is <br />well drained at all times. <br />203.07 Construction of Embankment and Treatment of Cu[ Areas with <br />• Moisture and Density Control. Soil embankments shall be constmcted with <br />moisture and density control, and the soil upon which the embankments are to be <br />constructed shall be scarified to a depth of 6 inches and compacted with moisture and <br />density control. The moismre content of the soil at the time of compaction shall be as <br />specified or directed. <br />The material shall be removed from the full width of roadbed in all cut sections to the <br />designated depth. The soil below the designated depth shall be thoroughly scazified to <br />a depth of 6 inches and the moisture content increased or reduced, as necessary, to <br />obtain [be moismre content specified. This scarified layer shall then be compacted to <br />the relative compaction specified. <br />• <br />All embankment material shall also be compacted to the specified relative <br />compaction. <br />Maximum dry density of all soil types encountered or used will be determined in <br />accordance with AASHTO T 99, AASHTO T 18Q or a modification [hereof. <br />The amount of water to be used in compacting A-2-6, A-2-7, A-4, and A-6 through A-7 <br />soils shall not deviate from optimum on the dry side by more than two percentage <br />points as determined by AASHTO T 99, T 18Q or a modification thereof, as <br />designated in the Contract. A-4 soils which are unstable a[ the above mois[tre content <br />shall be compacted at a lower moisture content to the specified density. The amount <br />of water used in compacting all other soils shall be as required to obtain the percent <br />relative compaction required. <br />l44 <br /> <br /> <br />