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ALLISO TEST 39I:LIN3 C7MDANY Attachment to Soils 9eport <br />METHOO Oe INV'STIGATION <br />AUGER WRINGS <br />Allied Test Orilling Company uses a number of vmris- <br />tions of methods of investigation by sugar borings to de- <br />termine soil profile. Most commonly, the power flight sugar <br />(FA) method is employed. Sometimes a hand operated sugar <br />(MA) is used. Refer to the wain body of the report and to <br />the boring logs for an indication of the -:-.hod chosen. <br />Requirements for these invastiget. . ire outlined in <br />ASTM 0,1452, "Soil Investigation and Sampling by Auger Bor- <br />inge•'. In the power flight auger procedure, a 6" diameter <br />solid stem helical flight auger is advanced into the ground <br />by mechanical/hydraulic means and withdrawn at appropriate <br />intervals. Nature of subsurface soil is determined by ob- <br />serving and sampling disturbed material found on the flight <br />sugar. Representative samples are retained, sealed, and <br />stored for future testing or reference, if nacmu sary. After <br />cleaning the auger, it is inserted into the bore hole again <br />and the process is repeated until the desired testing depth <br />Is accomplished or until refusal (failure to advance the <br />auger duo to bedrock, detached boulder, hardpan, etc,) oc- <br />curs. A log of each boring is kept noting date, depth of <br />changes in strata, description of soil in each major strat- <br />um, groundwater conditions, and other date. <br />The hand operated super procedure is the some as <br />above, except that the ill to 3" auger is advanced into the <br />ground by hand means. This type of boring is usually re- <br />served for investigations to a shallow depth in an area <br />fairly inaccessible by machinery. <br />(over, plans*) <br />