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Summary of Pavement Coring Services <br />CR 512 from Rosland Road to U S Highway 1 o Sebastian, Florida <br />September 16, 2014 o Dunkelberger Project No. HB145025 <br />B. FIELD SERVICES <br />Coring Procedures <br />Page 2 <br />Florida's Sunshine One Call of Florida (811) was contacted to have underground utilities located <br />and marked prior to the field work. Maintenance of Traffic (MOT) was handled by Bob's <br />Barricades, as a subcontractor to DUNKELBERGER, in accordance with 2014 FDOT Standard <br />Design Index No. 613. <br />The pavement cores were cut on September 4 and September 5, 2014 using a high speed <br />rotary drill and a 4 -inch diameter, diamond studded core barrel. The cores were taken through <br />the asphalt into the underlying base rock. Hand -turned bucket auger equipment was used to <br />collect samples of the base and subgrade layer soils underlying the asphalt to an approximate <br />depth of 2 feet below the pavement surface at each location. <br />Upon completion, each core hole was backfilled with a mixture of soil cuttings and dry Sakrete, <br />and capped with cold -patch asphalt mix. The recovered asphalt cores and soil samples were <br />returned to our laboratory for thickness determination and classification, respectively. <br />Core Data <br />The tables below provide the measured layer thicknesses for the recovered asphalt and base <br />materials encountered at each core location. The thickness of the subgrade is provided to the <br />maximum depth of the hand auger boring (at least 2 feet below the pavement surface). The <br />tables have been broken down by direction of travel for ease of evaluation. <br />Table I: Southwest -bound Direction <br />Core <br />Identification No. <br />Asphalt <br />Thickness (in) <br />Base <br />Thickness (in) <br />Subgrade <br />Thickness (in) <br />C-1 <br />2.6 <br />8 4 <br />13.0 <br />C-2 <br />2.7 <br />10.8 <br />16.5 <br />C-3 <br />2.7 <br />10.3 <br />11.0 <br />C-4 <br />3 1 <br />10.4 <br />10.5 <br />C-5 <br />3 0 <br />10.0 <br />11.0 <br />C-6 <br />2.8 <br />11.2 <br />10.0 <br />C-7 <br />2.6 <br />10.4 <br />17.0 <br />C-8 <br />2.8 <br />10.2 <br />11.0 <br />C-9 <br />2.8 <br />10.2 <br />17.0 <br />C-10 <br />2.8 <br />10 7 <br />10.5 <br />C-11 <br />3.0 <br />10.0 <br />11.0 <br />C-12 <br />3 0 <br />13 6 <br />10.5 <br />C-13 <br />2.8 <br />11.2 <br />11.0 <br />C-14 <br />2.7 <br />10 9 <br />15.4 <br />C-15 <br />3 0 <br />11 0 <br />10.0 <br />AVERAGE: <br />2.8 <br />10.6 <br />12.4+ <br />DUNKELBERGER <br />