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M03106GE <br />r 1 <br />L J <br />~~ <br />5.2 Concrete Quality - <br />It is our understanding that the plans may include reinforced <br />structural concrete. To insure concrete members perform as in- <br />tended, the structural engineer should be consulted. <br />The quality of concrete is influenced by proportioning of the <br />concrete-mix, placement, consolidation and curing. Desirable <br />qualities of concrete include compressive strength, water tightness <br />and resistance to weathering. Engineering observations and testing <br />of concrete during construction is essential as an aid to safeguard <br />the quality of the completed concrete. <br />Testing of the concrete is normally performed to determine com- <br />pressive strength, entrained air content, slump and temperature. <br />We recommend that your budget include provisions for testing of <br />concrete during construction. We suggest that a reasonable <br />frequency of concrete tests can best be determined on a site, <br />materials and construction specific basis although as a guideline <br />American Concrete Institute, ACI, suggests one test per about each <br />fifty (50) cubic yards or portion thereof per day of concrete <br />material placed. <br />6.0 LIMITATIONS <br />It is the owner's and the owner's representatives' responsibility <br />to read this report and become familiar with the recommendations <br />and suggestions presented. We should be contacted if any questions <br />arise cohcerning the geotechnical engineering aspects of this <br />project as a result of the information presented in this, report. <br />The recommendations outlined above are based on our understanding <br />of the currently proposed construction. We are available to <br />discuss the details of our recommendations with you and revise them <br />where necessary. This geotechnical engineering report is based on <br />the proposed site development and scope of services as provided to <br />us by Mr. Jim Stover, P.E., J.E. Stover And Associates, on the type <br />of construction planned, existing site conditions at the time of <br />the field study, and on our findings. Should the planned, proposed <br />use of the site be altered, Lambert and Associates must be contact- <br />ed, since any such changes may make our suggestions and recommenda- <br />tions inappropriate. This report should be used ONLY for the <br />planned development for which this report was tailored and pre- <br />pared, and ONLY to meet information needs of the owner and the <br />owner's representatives. In the event that any changes in the <br />future design or location of the material storage piles are planne- <br />d, the conclusions and recommendations contained in this report <br />shall not be considered valid unless the changes are reviewed and <br />conclusions of this report are modified or verified in writing. It <br />10 <br />~lam6ert ana ~,o~ociate~ <br />CONSULTING GEOTEGM NIGL ENGINEERS wND <br />MATERIAL TESTING <br />