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• • . ' ' I <br /> I <br /> �/ickery �ngineerin� � Consultin�,LLC <br /> I^.�t 1�I v i�ri�c 4��.�o.�,v t7rivc.�_c;cn ernn-ie,�v�l V ?i;q."_I 5pa <br /> �{�One: ?5Z-4i��-3'_" I:�x. 0`+'_4�?c-I•"I <br /> rv�ciccr��[avic.�eryen�.com <br /> Boulder Wall Calculations - 4.5-Foot Total Wall Height(South Wall) <br /> Project VEC 14-003A- August 5, 2014 <br /> 1161 Elmwood Avenue, Orono, MN <br /> Page 2 of 2 <br /> Calculate Overturninq Moment: <br /> Driving Moment, Mo= LO.��Ka•7sHrHr•cos(bl — �)•�Hr IJ + rqs•Ka•H•�H IJ Mo= 982.41bf <br /> 3 J L Zl <br /> Calculate Resistinq Moment: <br /> Resisting Moment is calculated by taking the sum of the weights times the moment arms for each section of wall above <br /> Wl•(Wba- Wt)•��� <br /> M1 :_ � M1 = 4051bf <br /> 1 ft <br /> W2�(Wba- Wt) + Wt� <br /> M2:= 2 M2= 1822.5]bf <br /> (lft) <br /> C Wbal <br /> �'2� I <br /> ? <br /> M3 :_ � M3 = 1215 lbf <br /> lft <br /> Resisting Moment, Mr:= M1 + M2+ M3 Mr= 3442.5 lbf <br /> Factor of Safety, Overturninq: <br /> FOS Overtuming, FOSot:= Mr FOSot= 3.504 <br /> Mo <br /> I hereby certify that this plan, specification, or <br /> report was prepared under my direct supervision <br /> and that I am a duly Licensed Professional <br /> Fnnineer under the laws nf the State nf Minnesnta <br /> Ronald W. Vickery, PE <br /> Registration Number: 24065 <br /> August 5, 2014 <br /> �ngineerin��jolutions�oranG/nstable (/Vor/cl <br />