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1. Acceptance of construction below finish grade including, where applicable, <br />damp -proofing and waterproofing. <br />2. Inspecting, testing, approving, and recording locations of underground <br />utilities. <br />3. Removing concrete formwork. <br />4. Removing shoring and bracing, and backfilling of voids with satisfactory <br />materials. <br />5. Removing trash and debris. <br />6. Placement of horizontal bracing on horizontally supported walls. <br />C. Ground surface preparation: <br />1. Remove vegetation, debris, unsatisfactory soil materials, obstruction, and <br />deleterious matter from ground surface prior to placement of fills. <br />2. Plow, strip, or break up sloped surfaces steeper than one vertical to four <br />horizontal so that fill material will bond with existing surface. <br />3. When existing ground surface has a density less than that specified under <br />"compacting" for the particular area, break up the ground surface, <br />pulverize, moisture -condition to the optimum moisture content, and <br />compact to required depth and percentage of maximum density. <br />D. Placing and compacting: <br />1. Place backfill and fill materials in layers not more than 8 inches in loose <br />depth. <br />2. Before compacting, moisten or aerate each layer as necessary to provide the <br />optimum moisture content. <br />3. Compact each layer to required percentage of maximum density for area. <br />4. Do not place backfill or fill material on surfaces that are muddy, frozen, or <br />containing frost or ice. <br />5. Place backfill and fill materials evenly adjacent to structures, to required <br />elevations. <br />6. Take care to prevent wedging action of backfill against structures by <br />carrying the material uniformly around the structure to approximately the <br />same elevation in each lift. <br />3.6 GRADING <br />A. General: <br />1. Uniformly grade the areas within limits of grading under this Section, <br />including adjacent transition areas. <br />02220 - 5 <br />