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.� � . i � . �. <br /> o z�l 4�_o ��7 <br /> � .� SCHIMNOWSKI fHGINFfRS <br /> CRITERIUM-SCHIMNOWSKI ENGINEERS <br /> 161 DUNBAR WAY <br /> MAHTOMEDI, MN 55115 <br /> TEL 651 779-7700 <br /> FAX 651 779-7114 <br /> www.criterium-schim nowski.com <br /> December 17, 2015 <br /> Lincoln Danforth <br /> Yardscapes, Inc. <br /> 8609 Harriet Avenue South <br /> Bloomington, MN 55420 <br /> RE: Stone Retaining Wall Evaluation <br /> 3926 Cherry Avenue <br /> Orono, Minnesota <br /> Project#15-1804 <br /> Dear Mr. Danforth: <br /> This letter is being sent per your request regarding the recently constructed boulder retaining walls at the <br /> above address. This evaluation is based on the Retaining Wall Typical section I prepared dated July 28, <br /> 2015, a site visit I performed, and verbal information provided by you regarding construction means and <br /> methods. <br /> The construction of the retaining walis appears to be structurally stable and in general conformance with <br /> boulder retaining wall and construction industry standards. The walls were constructed with stone of <br /> sufficient size and setback. Other typical construction details such as use of drainage elements and filter <br /> fabric also appeared to be followed correctly. As is normal for boulder retaining walls of this type, some <br /> wall movement and soil settlement should be expected. I recommend that concentrated areas of surtace <br /> water should also be directed away from the walis. Numerous photos were taken for documentation, <br /> some of which have been provided as part of this report. <br /> Additionally, the soil conditions at the site met my initial soil bearing capacity requirement of 2000 pounds <br /> per square foot (psf). <br /> This evaluation was performed using the design guidelines presented in the third edition of the"Design <br /> Manual for Segmental Retaining Walls" (DMSRW) published by NCMA in 2009. Direct all surface <br /> drainage away from the retaining walls. If soil conditions, proposed layouts, or other design parameters <br /> vary from that assumed, a revised analysis might be needed. Please call me if you have any questions or <br /> need more information. Thank you. <br /> Sincerely, <br /> --� '�� ,�i' <br /> �- %_ _ - <br /> Paul Schimnowski, PE <br /> LICENSED <br /> PROFESSIONAL <br /> ENGINEERS <br /> HOME&BUILDING INSPECTIONS <br /> STRUCTURALEVALUATIONS <br /> ASSOCIATION RESERVE/TRANSITION STUDIES <br /> RESIDENTIAUCOMMERCIAL <br /> RETAINING WALL DESIGN&EVALUATIONS <br />