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HomeMy WebLinkAboutRE: boulder wall 9-19-2014 , : �;�.�, , _ � : � . ` . ro: }: ¢ #s � � : ���. } . o � � , � � c � .��:�,�,m �,.� t��` � �; s� � �. � , -.. a � � ����C1� / H I��� ��� � N�y E R S _ ��. � . . � � £ �� � �� _,. �,�.a, _� r��s w � CRITERIUM-SCHIMNOWSKI ENGINEERS 161 DUNBAR WAY MAHTOMEDI,MN 55115 TEL 651779-7700 FAX 651 779-7114 www.criterium-schimnowski.com September 19,2014 Aaron Madson Natural Creations Inc. 5700 Vagabond Lane North Plymouth,MN 55446 RE: Boulder Retaining Wall Evaluation 2325 Glendale Cove Lane Orono,Minnesota Project No. 14-1413 Dear Mr.Madson: This letter is being sent per your request for an evaluation of the boulder retaining wall construction at the 2325 Glendale Cove Lane project in Orono,Minnesota. This evaluation is based on verbal information and project photos provided on September 15, 2014(see attached photos). The construction of the retaining walls appears to be structurally stable and in general conformance with boulder retaining wall and construction industry standards. The walls were constructed with boulders of sufficient size and setback. Other typical construction details such as use of drainage elements and filter fabric also appeared to be followed conectly. As is normal for boulder retaining walls of this type,some wall movement and soil settlement should be expected. I recommend that gutters and downspouts be installed and maintained on the house in order to direct the roof runoff away from the retaining wall. Concentrated areas of surface water should also be directed away from the walls. This evaluation was performed using the design guidelines presented in the third edition of the"Design Manual for Segmental Retaining Walls"(DMSRW)published by NCMA in 2009. If soil conditions, proposed layouts,or other design parameters vary from that assumed a revised analysis might be needed. Please call me if you have any questions or need more information. Thank you. Sincerely, �� 1 ' - Paul Schimnowski,PE LICENSED P ENGINEE s�` RECEIVED HOME&BUILDING INSPECTIONS ��V — / ZO�4 STRUCTURAL EVALUATIONS ASSOCIATION RESERVElTRANSITION STUDiES RESIDENTIAUCOMMERCIAL CITY OF ORONO RETAINING WALL DESIGN&EVALUATIONS 2325 Glendale Cove Lane,Orono,Minnesota September 19,2014 Page 2 of 2 TERMS AND CONDITIONS This report is expressly made subject to the following terms and conditions to which all persons that receive and rely thereon agree: 1.The Engineers services shall be performed with the skill and care ordinarily used by members of the engineering profession practicing under similaz conditions at the same time and in the same locality and applies only to facts that aze within Engineer's knowledge or could reasonably have been ascertained by ENGINEER. • Our observations were non-destructive,and limited to those portions of the facility that could be visually examined without excavation,removing surface finishes,disassembling equipment,or removing finishes, furnishings and equipment. � Our scope of services did not include an exhaustive technical investigation.No material sampling,analytic tests,precise measurements or engineering calculations were performed. • We did not deternune whether the facility and its operation or use conform to any building codes,or regulations,or restrictions that may be enforced within the jurisdiction. • Pmbable cost estimates figures,if provided,are based on statistical construction records,past project experience,and judgment.The actual cost will vary based on economic and bidding conditions.We recommend that the actual be determined by obtaining competitive bids. 2.The repc�rt is not to be construed as guazantees or warranties of the condition of the buildings and grounds. 3. Said Report reflects and is an expression of the professional judgment of ENGINEER. 4. Said Report is given as to the best of Engineer's knowledge,information,and belief as of the date hereof. 5.Said Report is based entirely on and expressly limited by the scope of services ENGINEER has been employed by Client to perform. 6.To the fullest extent permitted by law,Client and Engineer(1)waive against each other,and the other's employees,officers,directors,agents,insurers,partners,and consultants,any and all claims for or entidement to special,incidental,indirect,or consequential damages arising out of,resulting from,or in any way related to this report,and(2)agree that Engineer's total liability to Client shall be limited to the total amount of compensation received by Engineer. 7.The parties acknowledge that Engineer's scope of services does not include any services related to Molds or Hazazdous Environmental Condition(the presence of asbestos,PCBs,petroleum,hazardous substances or waste, and radioactive materials).If,however,during the inspection,we knowingly encounter such substances,we will notify you of the presence of these substances without accepting any liability whatsoever for any damage or harm caused by the substances.It is your responsibility to detemune if further testing is required and to retain an independent,qualified professional to perform such tests. CRITERIUM-SCHIMNOWSKI ENGiNEERS TEL 651 779-7700 Location: Photo Taken by: Date: �R I T E R I U� � 2325 Glendale Cove Ln. Natural Creations NA Orono, Minnesota ��►�l k F F N S i`� ;''/'�� ��,,,,.�-- Description: ',.% � ��"�% �,�-- View of boulder _:�r=- ,,,,,,.,.r-- retaining walls. No �,, i .. . '�' `�� - ._� =` -�--�–"""""` structural issues • �. � , ;� noted. �e�,A , .. .. �� . .�.. ' ''". � _ . . . � � ��s. ¢ ...... � _..—�.��...�,,. - _. ��{^.w.... , h�.: � . � .. � _ � . . � �� � ��—�-.�-.�.,�������.�. y.� .�i:`w �-t ��~���'�� *��"`"'�tJ+ *�� �t~� 4� I .. ' d. ':;JT� � �� ���5. .�. � +� � ' '���a„�g�,�;d ,;A .;t��" '.�}:. i� " R, , �a .. ��� Y�- � �4 " _ �� . :� � � �,�.imber .� � . –�,,�---� --"'� � Description: -'�..._-----�r..,.-"�..�..�-.'--''�`..._..-----" � ` . �'"�,..._i..---- �,_..�----�-�"� View of boulder ������; �', � � --�• `" �--`-"—' __.--.,----•- rctaining wall. 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