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r <br /> Mr. & Mrs. David Rahn <br /> August 7, 1997 <br /> Page Two <br /> a. Underpinning to be constructed spaced 8 feet apart at all corners along the <br /> new exterior perimeter walls in existing foundation. <br /> b. Underpinning to be 2 feet by 2 feet for non-load bearing walls and 2 feet by 3 <br /> feet for load bearing walls, constructed of plain concrete with sufficient <br /> thickness to provide 42" frost protection. <br /> If you have any questions, please contact me. <br /> Sincerely, <br /> J. H. DAHLMEIER ENGINEERING, INC. <br /> Jo . Dahlmeier, P.E. <br /> JHD:Im <br /> Enclosure <br /> cc: City of Orono <br /> I hereby certify that this plan, specification or report <br /> was prepared by me or under my direct supervision <br /> and that I am a duly registered professional engineer <br /> under the laws of the State of Minnesota. <br /> G <br /> Mi sota Registration No. 9212 <br />