Laserfiche WebLink
City of Everett 31 00 00 - 6 <br /> Inductive Charging Infrastructure for Everett Transit <br /> 3. Do not place backfill or fill material on surfaces muddy, frozen, or containing frost or <br /> ice. <br /> 4. Place backfill and fill materials in such a manner as to prevent wedging action of <br /> backfill against structures. <br /> 3.4 COMPACTION <br /> A. General: Control soil compaction during construction providing minimum percentage of <br /> density specified for each area. <br /> B. Percentage of Maximum Density Requirements: Compact soil to not less than the <br /> following percentages of maximum dry density determined in accordance with ASTM D <br /> 1557 ("Modified Proctor"): <br /> 1. Structures: Compact top 12 inches of subgrade where exposed, and each layer of <br /> backfill or fill material to 95 percent of maximum dry density. <br /> 2. Building Slabs and Steps: Compact top 12 inches of subgrade and each layer of <br /> backfill or fill material to 95 percent of maximum dry density. <br /> 3. Lawn or Unpaved Areas:Compact top 12 inches of subgrade and each layer of backfill <br /> or fill material to 85 percent of maximum dry density. <br /> 4. Walkways: Compact top 12 inches of subgrade and each layer of backfill or fill material <br /> to 95 percent of maximum dry density. <br /> 5. Pavements: Compact top 12 inches of subgrade and each layer of backfill or fill <br /> material to 95 percent of maximum dry density. <br /> 6. Utility Bedding and Backfill: Compact each layer of bedding and backfill to 95 percent <br /> of maximum dry density. <br /> 7. Granular Fill Placed Against Subgrade Walls: Compact to 90 percent of maximum with <br /> small hand-operated equipment to avoid overcompaction. <br /> C. Moisture Control: Where subgrade or layer of soil material must be moisture conditioned <br /> before compaction, uniformly apply water to surface of subgrade, or layer of soil material. <br /> Prevent free water from appearing on surface during or subsequent to compaction <br /> operations. <br /> 1. Remove and replace, or scarify and air dry, soil material too wet to permit compaction <br /> to specified density. <br /> 2. Soil material removed because it is too wet to permit compaction may be stockpiled or <br /> spread and allowed to dry. Assist drying by discing, harrowing or pulverizing until <br /> moisture content is reduced to a satisfactory value. <br /> 31 00 00 - 6 EARTHWORK <br />