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THE CITY OF SUNNY ISLES BEACH <br />PROJECT NO. 21-1011 <br />BUILDING DEPARTMENT RELOCATION TO ANNEX <br /> <br />Project No. 21-1011 November 2024 023000 Subsurface Investigation-7 <br />3.13 GRADING <br /> <br />A. General: Uniformly grade areas to a smooth surface, free of irregular surface <br />changes. Comply with compaction requirements and grade to cross sections, <br />lines, and elevations indicated. <br /> <br />B. Site Grading: Slope grades to direct water away from buildings and to prevent <br />ponding. Finish subgrades to required elevations within the following tolerances: <br /> <br />1. Lawn or Unpaved Areas: Plus, or minus 0.1 foot. <br /> <br />2. Walks: Plus, or minus 1 inch. <br /> <br />3. Pavements: Plus, or minus 1/2 inch. <br /> <br />C. Grading inside Building Lines: Finish subgrade to a tolerance of 1/2 inch when <br />tested with a 10-foot straightedge. <br /> <br />3.14 SUBBASE AND BASE COURSES <br /> <br />A. Place subbase and base course on subgrades free of mud, or water. <br /> <br />B. On prepared subgrade, place subbase and base course under pavements and walks <br />as follows: <br /> <br />1. Shape subbase and base course to required crown elevations and cross- <br />slope grades. <br /> <br />2. Compact subbase and base course at optimum moisture content to <br />required grades, lines, cross sections, and thickness to not less than 98 <br />percent of maximum dry unit weight according to ASTM D-1557, AASHTO <br />T-180. <br /> <br />3.15 FIELD QUALITY CONTROL <br /> <br />A. Testing Agency: Owner will engage a qualified independent geotechnical <br />engineering testing agency to perform field quality control testing. <br /> <br />B. Allow testing agency to inspect and test subgrades and each fill or backfill layer. <br />Proceed with subsequent earthwork only after test results for previously completed <br />works comply with requirements. <br /> <br />C. Footing Subgrade: At footing subgrades, at least one test of each soil stratum will <br />be performed to verify design-bearing capacities. Subsequent verification and <br />approval of other footing subgrades may be based on a visual comparison of <br />subgrade with tested subgrade when approved by Architect. <br /> <br />D. Testing agency will test compaction of soils in place according to ASTM D-1557, <br />AASHTO T- 180. <br />