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IMPORTANT INFORMATION
<br />ABOUT YOUR
<br />GEOTECHNiCAL ENGINEERING REPORT
<br />Mom construction problems are caused by site subsur-
<br />face conditions than any other factor As troublesome as
<br />subsurface problems can be. their frequency and extent
<br />have been lessened considerably in mcent years. due in
<br />large measure to programs and publications of ASFE/
<br />The Association o( Gngincrring Firms Prac[icing in
<br />the Geosciences.
<br />The (ollou�ing suggestions and observations are offered
<br />to help you mduce the geotechnicaLrelated delays.
<br />tost-rnerruns and other cosdy headaches that can
<br />oaur during a mnstruction project.
<br />A GEOTECHNICAL ENGINEERING
<br />REPORT IS BA5ED O�� A UNIQUE SET
<br />OF PRO)ECT-SPECIFIC FACTORS
<br />A geotechnical engincrring repoi� is bascd on a sub,ur-
<br />face exploration plan designe�i to incorporate a unique
<br />set o� project-specific factors These typically indudr
<br />the general nawre of the structurc imolved. its size and
<br />configuration, the location ot the structure on the site
<br />and ns oricnwtion, physical mncomitants such as
<br />aaess roads. parl:ing lots. and undcrground utiliuc5.
<br />and the Ievel of additional risk which the dient assumc�f
<br />by virtue o( limitations imposed upon thc exploratrny
<br />program To help avoid cosdy problems. consult thr
<br />geotechnical engineer ro determine how any fattor,
<br />which change subsequent to the date ol the report m,�y
<br />aHect its reiommcndations.
<br />Unless your mnsulting geotechnicai engineer indicates
<br />othrr.eise. uoirr g��nlrcfmical ertaintrrin�a rtnort shoidA nnt
<br />!�r usrd
<br />• 11'hrn thc nature of the proposed strucwre is
<br />chan�ed, br example, il an oflice budding µ�dl h�•
<br />crected instead of a parking garagc. or il a rcln,;rr
<br />atcd warchousc will tx built insteod ol an un�r-
<br />In�cratcd onc.
<br />• when thc slzc or eonliguration of thr proposc�f
<br />Suucwrc is altcrcd.
<br />• whcn thc location or orientaUon c�l th� �����( ��•� � I
<br />Strucwrc is modilicd.
<br />• when thrrc is a changc ol owncrs �i�� ��
<br />. Ic,r appliwtion to an ad�xrnt snc
<br />�.",rrh �luiical rngbir�rs camml acupt rnsrnnsihllltu Mr M�ddrnu
<br />w�iu� h muu �r�elot� il lNry arr nnf rons�dl�J �di� � 6�� ��,r �. ,��nsiJ.
<br />, rrd m 1lirv rrpnrfs Anvin�m�, nt haer c h�mar,l
<br />M05T GEUTECfiNICAL "FINDINGS"
<br />ARG PROF[SSIONAL GSTIMAT[.S
<br />�.;iP� r.(inr,di� �I� n1��n•il����, �i� lu�il •.ub•�utlnc.c �.� �i�,hii� ii�,
<br />�ilil��dllLr,C�Nrlfll',hIICfCbJill�'�IPSJIClJiI'll N�VJI
<br />�b� ;.n� lakrn U�nd dcnvcd thruugh snm�7linF;.m�{ .vl
<br />�;� �nt I.�I�ur,�l��iy I�rSUn� arC!`Klla(?tild!�d hY G''^
<br />technical engineers who then render an opinion about
<br />overell subsurface conditions, their likely reattion to
<br />proposed construction activiry, and appropriate (ounda-
<br />tion design Even under optimal cirwmstances attual
<br />conditions may differ from those in(erred to exist.
<br />because no geotechnical engineer, no matter how
<br />qualified. and no subsurface esploration program, no
<br />matter how com�rehensive. can reveal what is hidden by
<br />earth. rock and time The actual inrerface between mate-
<br />rials may be far more gradual or abrupt than a report
<br />indicares. Actual conditions in areas not sampled ma}�
<br />diu� r(rom prediciions Notfii�ig cnn Ge dmie to preve�d tL•e
<br />wunn itit���trA. 6ut <teps am bc tnkrn to hrlp ntinintix their
<br />irrq�niL For this reason. must ex��rrirnceA ou�ncrs retairi tbcir
<br />9cutcdmicnl ruraidlnnts tfi�oun4 fhc ronstruction stagr. ro iden-
<br />tify variances. conduct additional tests which may be
<br />necded, and to recommend solutions [o problems
<br />encoun[ered on site.
<br />SUBSURFACE CONDITIONS
<br />CAN CHANGE
<br />Subsurfacc iondiuom map hc modi(icd by constandy-
<br />changing natural forces f3ecause a georechnical engi-
<br />ncrring report is based on conditions which existed at
<br />thc timc ol subsur(acc caploration. ronsVuriimi Arcisions
<br />.I;,�II�;� q01 ��f IrA51�I Oq d O('JIf(I1tlICt7I fr1011fi i IIIiq IP[�OI( u'I1JSi
<br />adn�u�+�u mau Inmt Lre�i ai(rchd 6� timr SpeaE: with [he geo.
<br />trchnical consulWnt to learn if additional tests are
<br />,idvisablc �furc construction sWrts
<br />ConsVuction operations at or adjacent to the site anrf
<br />natural crents such as floods. carthquakes or grounJ-
<br />uater Iluctuations may also aflcct subsur(acc condiuons
<br />,nd, thus. the continuir.,; adcquacy u( a gcotcihnical
<br />rrpurt The geotechnical engineer should be kept
<br />a����aiticd i�l �ny such c��cnts and should Fx conwltcd to
<br />dclrrminr d ;ui�hli�mal lc�I� ,�tc nr��.,,�ti;iry
<br />GEOT[CHNICAL SERVICES ARE
<br />PERFORMED FOR SPECIFIC PURPOSES
<br />AND PERSONS
<br />�'�rr�:��,hrr,�.d��n�;in�-�i�- r,�p„rttiarc�'�rcp,vc�ltnmi��l
<br />ihc ,� riihc n«vio- ul s��cahr: mdiciduals A rcporl ��m-
<br />��arccf lur a axisuhing crvll cngincrr may not bc adc-
<br />�iu;iic lor a ccrost�uction contrector, or cven somc othcr
<br />� �,�,,,,�Iting cfvll engincr� Unless indicated otherwi5c
<br />uu�. rr{�rt was rrcpared ex�xcssly (or thc dicnt imnl.c�i
<br />mJ ca�xcssly br pur��ses indicatcd by thc dlrm U,c
<br />I�; ,�ny Mhcr �rsons lor any purposc. or by thc dicni
<br />I�.i ;, ,tiflcrcnt pur�xnc may rezult tn {aoblenu Nn in,h-
<br />ciAmd nlh�r Uian Ih� ili�nt ShnulJ ul+plg IhiS rtporl I�r ds
<br />mlr�olr�t pur�,asa w�tlNrid h�sf con�aru�a w�ilh IN� arot�dum ul
<br />rn,pqrfr Nu pfrinq f(ilul�i dpf+l y Ihis rft'���I lnr pny (nPpn}r
<br />ail'i r Ilhlq �(Id� pYlalliit��ll ��'�fl[H1p�i�Vi� Y'IfhPpl ��r<I (Atl�frfiq�!
<br />���I�: Ihr pra(�chm� dl NtO�n�r r
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