report of Geotechnical Exploration-1991

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. �. , IMPORTANT INFOIZMATION � ABOUT YOUR � j - GEOTECHNICAL ENGINEERING REPORT � � � — More construction problems are caused by site subsur- technical engineers who then render an opinion about face conditions than any other factor. As troublesome as overall subsurface conditions.their likely reaction to subsurface problems can be,their frequency a�d extent proposed construction activity.and appropriate founda- _ have been lessened considerably in �ecent years.due in tion design. Even under optimal circumstances actual large measure to programs and publications of ASFE/ conditions may di(fer from those infer�ed io exist. The Association of Engineering Firms Practicing in because no geotechnical engineer,no matter how the Geosciences. qualified,and no subsurfacQ exploration program,no — The follow�ing suggestions and observations are offered matter how comprehensive,can reveal what is hidden by to help you reduce the geotechnical-related delays, earth.�ock and time.The actual inte�face between mate- cost-overruns and other costly headacfies that can rials may be(ar more gradual or abrupt tfian a report _ o:cur during a construccion project. indicates.Actual conditions in areas not sampled may � dif(er from predictions.Nothing can be done fo prevenf the unanticipa�ed,but steps tan be taken�o help minimize thcir A GEOTECHNICAL ENGINEERING �mDuct.For this reason,most experitnced own�rs retain their • REPORT IS BASED ON A UNIQUE SET 9cocc:�i��ica1 consulta�its thr�ugh�he cons�ruction stage,to iden- tify variances.conduct additional tests which may be OF PRO)ECT SPECIFIC FACTORS needed.and to�ecommend solutions to problems A eotechnical en ineerin re encountered on site. _ g g g port is based on a subsur- face exploration plan designed to incorpo�ate a unique set o(proiect-specific factors.These typically in�ude: SUBSURFACE COND1TlONS . the general nature of the structure involved,its size and CAN CHANGE - — configuration:the focation oF the structure on the site and its orientation:physical concomitants such as Subsu�face conditions may be modi(ied by constantl��- access roads.parking lots.and underground utilities, changing natural(orces. Because a geotechnical engi- and the level o(additional risk which the dient assumed neering report is based on conditions which existed at — b�•virtue ot limitations imposed upcm the exploratory the time ot subsur(ace exploration,conslruction decisions program. To help avoid costly p�oblems.consult the =>>��«<d��!�c l�ascd on a acotcrhnical cnginecring reporf u�h��cP geotechnical engineer to determine how am•factors Qa�q��u m��u Jiavc hccn a//e�1ed(�u lime.Speak with the geo- __ �chich change subsequent to the date o(the repon ma�� echnical consultant to leam if additional tests are a(fect ics recommendacions. advisable before construction starts. . Unless your consulting gec�technical engineer indicates Constr�ction operations at or adjacent to the site and _ otherkis2.uour gcotcthniial eiogiacering r�pc�rt shou(Q not natural events such as floods.earthqua�es or ground- hc u�ed: water(luctuations may also affect subsurface cond'+tions •V��hen the nature of the proposed structure is and,thus.the continuing adequacy of a geotechnical changed.for example.if an o((ice building will be report.The geotechnical engineer should be kept erected instead of a parking garage.or if a refriger- apprised o(any such events.and should be consulted to ated wa�ehouse will be built instead of an unre- dete�mine i(additional tests are necessary. frigerated one: � •when the size or configuration of the proposed GEOTECHNICAL SERVICES ARE � 1 structure is altered: PERFORMED FOR SPECIFtC PURPOSES •when the location or orientation of the proposed structure is moditied: AND PERSONS •when there is a change of ownership.or Geotechnical engineers reports are prepared to meet � •for application to an adjacent site. the s cific needs of s pe pecific individuals.A report pre- Geoeethnital enyineers cannol accept responsihilily for hrohlems pared for a consulting civil engineer may not be ade- u�hich may develop i/lhey are not consul(ed aJter(atfors tonsid- quate(or a construetion convaetor,or even some other Tered in their report's development have chanqed. consulting civil engineer. Unless indicated otherwise. this�eport was prepared expressly for the dient involved and expressly for purposes indicated by 2he dient.Use � MOST GEOTECHNICAL "F1NDINGS" by any other persons for any purpose.or by the dient TARE PROFESSIONAL ESTIMATES (or a dif(erent purpose,may result in problems. No indi- vidual other than the client should appl y this report jor its Site exploration identi(ies actual subsur(ace conditions intended purp�se u�i(hout Jirst conferring with the geotechnical 1 onl�•at those points where samples are taken,when engineer. N�persen should apply 1hi5 report/�r dny purpose they are taken. Data derived through sampling and sub- other than that vriginallu�ontcmplated u�ilhout first con/erring sequent laboratory testing are extrapolated by geo- u�ilh(he gcolcchni:al en_qineer.