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K S L ►'8 <br /> KELLER , SCHLEICHER & MacWILLIAM ENGINEERING AND TESTING , INC . <br /> MARTIN (772) 337-7755 p0. BOX 78A 377, SEBASTIAN , FL 32978-1377 SEBASTIAN (772) 589-0712 <br /> PALM BEACH (561 ) 8454445 www.ksmenglneering.net MELBOURNE (321 ) 768-8488 <br /> FAX (561 ) 845-8876 &Mail: KSM@KSMENGINEERING.NET ST. LUCIE (772) 229-9093 <br /> CA.: 5693 FAX (772) 589-6469 <br /> South County Park -3- January 25 , 2012 <br /> '20th Avenue S . W . <br /> Indian River County, Florida <br /> Parking and Drive Areas : <br /> We also performed five (5) additional hand-augers in the proposed parking/drive areas <br /> to evaluate the soils in relation to the proposed pavement. The soils were generally fine <br /> grained sand and medium dense . Please refer to the soil boring logs for specific <br /> information relative to the soil description. <br /> Although a comprehensive pavement evaluation was not within the scope of this study <br /> the site may be prepared to support a flexible pavement. The minimum pavement <br /> design for standard duty asphalt should include the following : <br /> Clear the pavement areas of any surface debris , including vegetation , roots and organic <br /> matter. Stumps shall be removed entirely. The cleared areas should be graded level <br /> and proofrolled . Any soft yielding areas shall be excavated and replaced with clean . <br /> compacted fill . Sufficient passes should be made during compaction operations to <br /> produce a density no less than 95 percent of its modified proctor value (AASHTO T180) <br /> to a depth of two feet. <br /> 0 <br /> Additional fill shall consist of clean granular sand containing less than 10 % material <br /> passing the U . S . Standard No . 200 mesh sieve and placed in loose layers of 12 inches <br /> and compacted to the above densities . <br /> Eight inches of suitable clayed soil having a limerock bearing ratio (LBR) of 40 or FBV <br /> of 75 psi should be used for the stabilized subgrade and compacted to 98 percent of its <br /> modified proctor value (AASHTO T180) . <br /> The base course shall be six inches of cemented coquina rock ( LBR 100) or limerock <br /> and compacted to 98 percent of its modified proctor value (AASHTO T180) . A <br /> minimum of 16 inches separation should maintained between the bottom of the base <br /> and the high seasonal groundwater table . <br /> The asphalt wearing surface should consist of 1 Y2" of type S- 1 or S-3 in accordance <br /> with the Florida Department of Transportation Standard Specification for Road and <br /> Bridge Construction . <br /> Standard duty pavement areas are considered car and pickup truck loading conditions <br /> and a few medium trucks . <br /> Ronald G. Keller, P.E.: 37293 / Si Uc. No.: 860 / Julie E. Keller, P.E. : 611366 <br />