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DocuSign Envelope ID:07A4359F-6D47-4987-B1F1-BF667ACBB3BA <br /> EARTH MOVING -312000 <br /> roots. Do not break, tear, or chop exposed roots. Do not use mechanical equipment that <br /> rips, tears, or pulls roots. <br /> 2. Cut and protect roots according to requirements in Section 015639 "Temporary Tree <br /> and Plant Protection." <br /> 3.6 EXCAVATION FOR WALKS AND PAVEMENTS <br /> A. Excavate surfaces under walks and pavements to indicated lines, cross sections, elevations, <br /> and subgrades. <br /> 3.7 EXCAVATION FOR UTILITY TRENCHES <br /> A. Excavate trenches to indicated gradients, lines, depths, and elevations. <br /> 1. Beyond building perimeter, excavate trenches to allow installation of top of pipe below <br /> frost line. <br /> B. Excavate trenches to uniform widths to provide the following clearance on each side of pipe or <br /> conduit. Excavate trench walls vertically from trench bottom to 12 inches (300 mm) higher <br /> than top of pipe or conduit unless otherwise indicated. <br /> 1. Clearance: 12 inches (300 mm) each side of pipe or conduit unless otherwise indicated. <br /> C. Trench Bottoms: Excavate and shape trench bottoms to provide uniform bearing and support <br /> of pipes and conduit. Shape subgrade to provide continuous support for bells, joints, and <br /> barrels of pipes and for joints, fittings, and bodies of conduits. Remove projecting stones and <br /> sharp objects along trench subgrade. <br /> 1. For pipes and conduit less than 6 inches (150 mm) in nominal diameter, hand-excavate <br /> trench bottoms and support pipe and conduit on an undisturbed subgrade. <br /> 2. For pipes and conduit 6 inches (150 mm) or larger in nominal diameter, shape bottom of <br /> trench to support bottom 90 degrees of pipe or conduit circumference. Fill depressions <br /> with tamped sand backfill. <br /> 3. For flat-bottomed, multiple-duct conduit units, hand-excavate trench bottoms and <br /> support conduit on an undisturbed subgrade. <br /> 4. Excavate trenches 6 inches (150 mm) deeper than elevation required in rock or other <br /> unyielding bearing material to allow for bedding course. <br /> D. Trench Bottoms: Excavate trenches 4 inches (100 mm) deeper than bottom of pipe and <br /> conduit elevations to allow for bedding course. Hand-excavate deeper for bells of pipe. <br /> 1. Excavate trenches 6 inches (150 mm) deeper than elevation required in rock or other <br /> unyielding bearing material to allow for bedding course. <br /> E. Trenches in Tree-and Plant-Protection Zones: <br /> Orange County Solid Waste Drainage Repairs DAA 2200365/TRC 017055.0000.0000 <br /> Drainage Repair Project November 2023 <br /> Orange County, NC 312000-7/13 <br />