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proposed expanded deck off the lake side of the house. <br /> <br />The engineer designed a wall and put his seal on it. The City received the design <br />based on the engineer’s seal without considering all of the design assumptions, <br />additional information requested, design provisions, design limitations, and quality <br />assurance requirements which the engineer has included in his design documents. <br />These are conditions placed on the design which, if ignored, make reliance on the <br />engineered design impossible. There are many such conditions included in Paul <br />Schimnowski’s design of the subject wall system. Three of the more significant <br />conditions are: <br /> <br />1.“Internal Compound Stability (ICS) has been calculated for this project by <br />Criterium. However, ICS is not a substitute for Global Stability Analysis which should <br />be performed by a qualified geotechnical engineer.” <br /> <br />2.“A qualified Geotechnical Engineer shall be consulted to verify the design <br />assumptions made by Criterium.” <br /> <br />3.“Additional information requested by Criterium-Schimnowski Engineers but not <br />available includes: geotechnical site survey and soil data.” <br /> <br />It is easy to see how failure to satisfy the conditions the engineer has placed on his <br />design may make the design unreliable, and holding the engineer responsible for <br />failure impossible. I suggest that the City require completion of the soil testing that <br />Paul Schimnowski requested to confirm his design assumptions. <br /> <br />I also suggest that the City require a Retaining Wall Completion Report as described <br />in Paul Schimnowski’s April 1, 2022 memo. <br /> <br />Regards, <br />Charles Price <br />Charles Price