Laserfiche WebLink
N%01 ter, <br /> December 20,1999 <br /> Burgess Res. <br /> Page 6 <br /> APPENDIX A <br /> ENGINEERED FILL SPECIFICATIONS <br /> A. CLEANING AND STRIPPING <br /> Work includes cleaning and stripping of the building pads and surrounding areas as indicated <br /> on the drawings. From these areas remove all debris, old pavement, trees,brush,roots, and <br /> vegetable ruin and grub out all large roots ('/z inch or greater diameter)to a depth of at least <br /> two feet below the footing elevation. The vegetable materials and all materials from the <br /> cleaning operation shall be removed from the site. If large areas are involved and the surface <br /> vegetation is sparse, disking in of the surface organic debris on the building pads may be <br /> permitted under the direction of the soil engineer. <br /> B. CONSTRUCTION OF FILL <br /> (1) Preliminary Operations <br /> After the cleaning and stripping operation and the cuts have been completed and <br /> before any fill is placed in any particular area, the existing surface shall be scarified <br /> to a depth of 6 inches and compacted to dry densities in excess of 90 percent of the <br /> maximum dry density as obtained by the Modified Compaction Test,ASTM D 1557, <br /> designation. It may be necessary to adjust the moisture content of the subgrade soil <br /> by watering or aeration, to bring the moisture content of the soil near optimum in <br /> order that the specified densities can be obtained. <br /> (2) Source of Material <br /> Engineered fill materials (on site or import) shall consist of sandy silts, sands, or <br /> sands and gravels unless stated otherwise in the report. Engineered fill material shall <br /> not contain rocks greater than 3 inches in greatest dimension and should be <br /> nonexpansive in nature with a plasticity index less than 12. <br /> At least seven days prior to the placement of any fill, the engineer shall be notified <br /> of the source of materials and samples shall be obtained to determine the suitability <br /> of the materials and for conducting laboratory compaction test on these samples. <br /> (3) Placing and Compacting <br /> Fill materials shall be spread in layers and shall have a uniform moisture content that <br /> pERS0' <br /> N <br /> d � <br /> P <br /> �SSpG♦ <br />