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. . , ' <br /> �/ic�.ery �n�incering� �,ansultin4,�,,LLC, <br /> ��(�^}-d i �ill; -\'�,'c,od4 r;?r � c�F .f ,�ri:,MN 5``�I ^Dq <br /> ., �_ <br /> �'h�:,z: ��z�-�.��-rzi= f-��. „�-�+ � ,��,:�� <br /> .r;-k<�� , �k<�,,, �,�. <br /> Boulder Wall Calculations - 4.5-Foot Total Wall Height (South Wall) <br /> Project VEC 14-003 - January 5, 2014 <br /> 1161 Elmwood Avenue, Orono, MN <br /> Page 2 of 2 <br /> Calculate Overturnina Moment: <br /> Hr H <br /> Driving Moment, Mo:= O.S�Ka•�ys•HrHr•cos(SI — �)��3 11 + rqs•Ka•H��Z 11 Mo= 530.1 lbf <br /> JJ L JJ <br /> Calculate Resistino 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 /> M 1 := 3 M I = 405 lbf <br /> lft <br /> W2��(Wba— Wt) + Wt� <br /> 1�'1��_ � M2= 10801bf <br /> (lft) <br /> Wba <br /> W2� <br /> M3 := 2 M3 = 6751bf <br /> ]ft <br /> Resisting Mom ent, Mr:= M I + M2+ M3 Mr= 21601bf <br /> Factor of Safetv, Overturninq: <br /> FOS Overturning, FOSot:= Mr FOSot= 4.074 <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 /> Fnninear iinriar iha law��f tha State nf Minnasnta_ <br /> ^__„�-�-^� <br /> � <br /> Ronald W. Vickery, PE <br /> Registration Number: 24065 <br /> January 5, 2014 <br /> �n�ineerin��,��a1utlor7s Fc�r an`,lnstahle ���lc�-- <br />