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i <br /> C. Moisture Control: ' <br /> 1. Where sub-grade or lift of soil material must be moisture conditioned before , <br /> compaction, uniformly apply water to surface of sub-grade, or layer of soil <br /> material, to prevent free water appearing on surface during or subsequent to <br /> compaction operations. <br /> 2. Before compaction, moisten or aerate each layer as necessary to provide <br /> optimum content. Compact each layer to required percentages of maximum dry <br /> density or relative dry density for each area classification. <br /> 3. Do not perform compaction operations on excessively wetted soils. <br /> 3.09 TRENCH BACKFILL: <br /> A. Place fill materials in specified lifts to required sub-grade elevations, for each area <br /> classification as described in this Section. <br /> 111 <br /> B. Backfill excavations as promptly as work permits, but not until completion of the <br /> following: <br /> 1. Inspection,testing, approval, and recording locations of underground utilities. <br /> 2. Removal of shoring and bracing, and back filling of voids with satisfactory <br /> materials. <br /> 3. Removal of trash and debris. <br /> C. Placement and Compaction: Place backfill and fill materials in layers of 2' maximum <br /> loose depth for material compacted by heavy compaction equipment and 1' maximum 111 <br /> loose depth for material compacted by hand operated tampers. All compaction shall be <br /> by mechanical methods. Water settling may be used for Perforated Piped Drainage <br /> aggregates only. Do not place backfill for fill material on surfaces that are overly wet or <br /> dry, frozen,or graded inconsistently. <br /> D. Perforated Piped Drainline Trench Backfill: ' <br /> 1. Provide a single,consistent 4"lift of Perforated Piped Drainage Bedding. <br /> 2. Coordinate installation of piping per the requirements of Section 33 34 00 - <br /> Storm Drainage Utilities. <br /> 3. Upon Engineers approval of installation of Perforated Piped Drainage, backfill <br /> with Perforated Piped Drainage bedding to within 12"of the design sub-grade. <br /> 4. Place a uniform 6" settled lift of Perforated Piped Drainage Middle Lift <br /> Aggregate. <br /> 5. Complete installation with 6" settled lift of Perforated Piped Drainage Top Lift <br /> Aggregate to design sub-grade. <br /> 6. Where design depths of pipe do not accommodate the installation of the three <br /> specified products as described, delete the installation of middle lift aggregate <br /> following identification of the limit of the area to be modified and the approval of <br /> the Engineer. <br /> E. Solid Piped Drainline Trench Backfill: , <br /> 1. Provide a single, consistent 4" compacted lift of Solid Piped Drainline Trench <br /> Bedding. <br /> Legion Golf Course Stormwater Detention Project December 1, 2017 <br /> WO#UP3620 310000-8 <br />