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3.4.5 Also at the beginning of each work day, the borrow source should be <br /> inspected for evidence of freezing. All frozen materials should be stripped <br /> from the borrow source and not used in the fill. Pre-wetting the borrow <br /> source is not desirable for winter construction. <br /> 3.4.6 Earthwork can be conducted after snowstorms providing that the snow is <br /> removed from the borrow source and from the active fill area and <br /> providing that the other conditions outlined above are met. <br /> 3.5 FILL <br /> 3.5.1 Obtain the Engineer's review of the surface to be filled and the fill material <br /> to be used prior to placing any fill. <br /> 3.5.2 Do not place frozen fill, or fill mixed with snow or ice. <br /> 3.5.3 Embankment fill shall be placed in horizontal lifts and each lift compacted <br /> to the specified relative compaction for the full width. Borrow area fill shall <br /> be blended to achieve a homogenous fill across the embankment without <br /> lenses, pockets, or zones of different materials. <br /> 3.5.4 All embankment fill shall be moisture conditioned to the specified range. <br /> 3.5.5 All surfaces shall be finished to provide adequate drainage. Any softening <br /> or loosening due to the collection of water shall be corrected by <br /> overexcavation and replacement. The finished surface shall be <br /> reasonably smooth, compacted, free from irregular surface changes, and <br /> comparable to the smoothness obtained by bladegrader operations. <br /> 3.6 COMPACTION REQUIREMENTS <br /> 3.6.1 General: Compact all materials by mechanical means. Flooding or jetting <br /> will not be permitted. If compaction tests indicate that compaction or <br /> moisture content is not as specified, material placement shall be <br /> terminated and the Constructor shall take corrective action prior to <br /> continued placement. Hand tamping shall be required around buried utility <br /> lines or other subsurface features that could be damaged by mechanical <br /> compaction equipment. <br /> 3.6.2 Fill: Place fill in loose lifts not exceeding 8 inches. Compact each lift to at <br /> least 95 percent relative compaction within moisture content of-2 to +3 <br /> percent of optimum. A kneading compactor such as a pad foot roller or <br /> equivalent is required for embankment fill compaction. Rubber tired rollers <br /> are specifically excluded. Do not attempt to compact fill material that <br /> contains excess or insufficient moisture. If the fill contains insufficient <br /> moisture, add water by sprinkling and thoroughly disking the fill. If the fill <br /> contains excess moisture, aerate the material by blading, disking, <br /> harrowing, or other methods, to accelerate the drying process. <br /> 02200-5 <br />