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DocuSign Envelope ID: 313DA256 -1EDE- 4396- A716- 4C53B809027E <br />JERRY M. PASSMORE CENTER ADDITION AND RENOVATION <br />HILLSBOROUGH, NORTH CAROLINA <br />3.18 FIELD QUALITY CONTROL <br />A. Special Inspections: Owner will engage a qualified special inspector to perform the following <br />special inspections: <br />1. Determine prior to placement of fill that site has been prepared in compliance with <br />requirements. <br />2. Determine that fill material and maximum lift thickness comply with requirements. <br />3. Determine, at the required frequency, that in -place density of compacted fill complies <br />with requirements. <br />B. Testing Agency: Owner will engage a qualified geotechnical engineering testing agency to <br />perform tests and inspections. <br />C. Allow testing agency to inspect and test subgrades and each fill or backfill layer. Proceed with <br />subsequent earth moving only after test results for previously completed work comply with <br />requirements. <br />D. Footing Subgrade: At footing subgrades, at least one test of each soil stratum will be performed <br />to verify design bearing capacities. Subsequent verification and approval of other footing <br />subgrades may be based on a visual comparison of subgrade with tested subgrade when <br />approved by Architect. <br />E. Testing agency will test compaction of soils in place according to ASTM D 1556, <br />ASTM D 2167, ASTM D 2922, and ASTM D 2937, as applicable. Tests will be performed at <br />the following locations and frequencies: <br />1. Paved and Building Slab Areas: At subgrade and at each compacted fill and backfill <br />layer, at least one test for every 2000 sq. ft. (186 sq. m) or less of paved area or building <br />slab, but in no case fewer than three tests. <br />2. Foundation Wall Backfill: At each compacted backfill layer, at least one test for every <br />100 feet (30 m) or less of wall length, but no fewer than two tests. <br />3. Trench Backfill: At each compacted initial and final backfill layer, at least one test for <br />every 150 feet (46 m) or less of trench length, but no fewer than two tests. <br />F. When testing agency reports that subgrades, fills, or backfills have not achieved degree of <br />compaction specified, scarify and moisten or aerate, or remove and replace soil materials to <br />depth required; recompact and retest until specified compaction is obtained. <br />3.19 PROTECTION <br />A. Protecting Graded Areas: Protect newly graded areas from traffic, freezing, and erosion. Keep <br />free of trash and debris. <br />B. Repair and reestablish grades to specified tolerances where completed or partially completed <br />surfaces become eroded, rutted, settled, or where they lose compaction due to subsequent <br />construction operations or weather conditions. <br />EARTH MOVING (UNCLASSIFIED) 312000-9 <br />