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<br />I <br /> <br />I <br /> <br />I <br /> <br />PERTINENT INFORMATION <br />ABOUT YOUR <br />GEOTECHNICAL INVESTIGATION REPORT <br /> <br />I <br /> <br />Many construction problems are callsed hy sile <br />subsurface conditions. As trouhlesolllc as <br />subsurface prohlems can be, their frequency and <br />extent may be lessened considerably <br /> <br />I <br /> <br />I <br /> <br />The following suggestions and observatiolls ;irc <br />offered to help you reduce (he geoteclll1ical <br />related delays. COSI overruns and miler custly <br />headaches that can occur during a conSlruCllon <br />project <br /> <br />I <br /> <br />I <br /> <br />A GEOTECHNICAL ENGINEERING <br />REPORT IS BASED UPON A UNIQUE SET <br />OF PROJECT SPECIFIC FACTORS. <br />A geotechnical engineering report is based on a <br />subsurface exploration plan designed to <br />incorporate a unique set of project specific <br />factors, These typically include: (I) Ihe general <br />nature of lile structures involved, (2) lile <br />structures' size and configuration. (3) lile location <br />of the structures on the site and tileir oriental ion, <br />(4) additional entities sucil as access roads, <br />parking lots, and underground utilities, (5) and <br />the level of additional risk which the client <br />assumed by virtue of limitations imposed upon <br />the exploratory program. To help avoid costly <br />problems, consult a qualified geotechnical <br />engineer to determine how any factors which <br />change subsequent to the date of the report may <br />affect its recommendations, <br /> <br />I <br /> <br />I <br /> <br />I <br /> <br />I <br /> <br />I <br /> <br />I <br /> <br />I <br /> <br />Unless your consulting geOlechnical engmeer <br />indicated OIherwise, your geolechllical <br />engineering reporl should nOI be used: <br />When the nature of the proposed <br />structure is changed: <br />when the size or configuration of the <br />proposed structure IS changed <br />significantly; or <br />when the location or orientation of the <br />proposed structure is modified, <br /> <br />I <br /> <br />I <br /> <br />I <br /> <br />MOST GIWTECHNICAL "FINDINGS" <br />ARE PROFESSIONAL ESTlMA TES. <br />Site exploration identifies actual subsurface <br />conditions only at those points \vherc samples arc <br />laken al the lime or sampling, Dala derived <br />through sampling and subsequent laboratory <br />testing is extrapolated by geotechnical engineers <br />who then render an opinion ;thOUl overall <br />subsurrace conditions. Ibeir likeh reCluion 10 <br />proposed constructio[J activit)'. ;llld :!pproprialc <br />foundation design. Even Linder optimal <br />circumstances actual conditions l1lil\' differ from <br />those inferred (Q exist, because e"ell lhe most <br />qualified geotechnical engineer ~lIld the most <br />extensive subsurface exploration prllgralll callnot <br />reveal \\'hal is hidden by earlh ami rock Tbe <br />actual interface hetween malcri:lls Illay he far <br />more gradual or abrupt than a reporl rmlicClles, <br />Actual conditions in areas 110t sampled Illa)' differ <br />from predictions. Nothing call he dOlle !O <br />prel'enr Ihe IIl1anricipaied, bill SIC/)S (IIn lie IlIken <br />to help minimize their impacl. For this reason. <br />most eJperienced owners rf{{l/!/ their <br />geoleclmical COlIsullallls Ihrollgh Ihe cOl/slr/lcrion <br />slage, to identify variances, conduct addilional <br />tests which may be needed, and to recommend <br />solutions to problems encountered on sile, <br /> <br />SUBSURFACE CONDITIONS CAN <br />CHANGE. <br />Subsurface conditions may be modified by <br />natural or man made forces Because a <br />geotechnical engineering repon is based on <br />conditions which existed at the lime of Ihe <br />subsurface exploration, conslmel/Oll decisions <br />should 1101 lie based 011 a ge01echnical <br />engineering report whose adequacy /IIay have <br />been aJJeCled by nalural or man made Jorces, <br /> <br />I <br />