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� I <br /> APPENDIX A <br /> ENGINEERED FILL SPECIFICATIONS <br /> SCOPE <br /> Principal items of work included in this section are as follows: <br /> A. Cleaning and Striping <br /> B. Construction of Fill <br /> A. . CLEANING AND STRIPPING <br /> Work includes cleaning and stripping of the building pad and surrounding area as <br /> indicated on the drawings. From this area remove all debris, trees, brush, roots, and <br /> vegetable ruin and grub out all large roots (1/2 inch or greater diameter) to a depth <br /> of at least two feet below the footing elevation. The vegetable materials and all <br /> materials from the cleaning operation shall be removed from the site. <br /> B. CONSTRUCTION OF. FILL _ <br /> E <br /> t <br /> (1) Preliminary, Operations'; <br /> After the cleaning and stripping operation and the cuts have been completed <br /> and before any fill is placed in any particular area, the existing surface shall <br /> be scarified to a depth of 6 inches and compacted to dry densities in excess <br /> dry density as obtained by the Modified <br /> of 90 percent of the maximum <br /> Compaction Test, ASTM D1557, designation. It may be necessary to adjust <br /> the moisture content of the subgrade soil by'watering or aeration, to bring the <br /> moisture content of the,soil near optimum in order that the specified densities <br /> can be obtained. <br /> (2) Source of Material <br /> Engineered fill materials (on site or import) shall consist of sandy silts, sands, <br /> d otherwise in the report. Engineered <br /> or sands and gravels unless state <br /> material shall not contain rocks greater than 3 inches in greatest dimension <br /> and should be nonexpa`nsive in nature with:a plasticity index less than 12. <br /> i <br /> At least seven days prior to the placement of any fill, the engineer shall be <br />' notified of the source of materials and samples shall be obtained to determine <br /> the suitability of the materials and for conducting laboratory compaction test <br /> on these samples. <br /> r <br /> i <br /> DE Rs y ! <br /> s <br /> z � � <br /> gssaC` <br /> P <br /> 10 <br />