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�/ic�C�ry �ns�'in�ering� Consu�tin�, LLC._ <br /> ,�-. ti li s,;�11 ,<,..(-� ;�_ . � .,.., ,f�1N s��i�; �so� <br /> �-.,n<:,�_. ._ .,_ _. , i-:,x, ?`iL-4��-t7;>i <br /> � <br /> �_.<.. , �i�,.;�t,i�r,�.ro�� <br /> Boulder Wall Calculations- 4.5-Foot Total Wall Height (North Wall) <br /> Project VEC 14-003 - January 5, 2014 <br /> 1161 Elmwood Avenue, Orono, MN <br /> Page 2 of 2 <br /> Calculate Overturnin4 Moment: <br /> Hr H <br /> Driving Moment, Mo:= 0.5-Ka��ys�Hr•Hr•cos(SI — �)•�3�� +�qs•Ka�H��-�� ��' Mo= 530.1 lbf <br /> � <br /> ¢ <br /> Calculate Resistin4 Moment: <br /> Resisting Moment is calculated by taking the sum of the weights times�the moment arms for each section of wall above <br /> �'' <br /> 2 �,' <br /> Wl�(Wba— Wt)� — <br /> M 1 := 3 M 1 = 4051bf <br /> ]ft <br /> W2•�(Wba— Wt) + Wt� ��� <br /> M2:_ � M2= 10801bf <br /> ���� s% I <br /> W2�Wba� aa. <br /> M3:= 2 M3 = 67 bf <br /> 1 ft ,,¢ <br /> Resisting Moment, Mr:= M1 + M2 3 Mr= 21601bf� <br /> Factor of Safetv. Overturnina: <br /> FOS Overturning, FOSot:— r FOSot= 4.074 <br /> Mo <br /> I hereby certify that thi lan, specification, or <br /> report was prepared der my direct supervision <br /> and that I am a dul icensed Professional <br /> FnninaPr iinriar th aw�nf tha Stata nf Minnasnta <br /> � <br /> Ronald W. Vickery, PE <br /> Registration Number: 24065 <br /> January 5, 2014 <br /> �n�ineerin�,sa�r�ticans�oran��nstafi/e wc�rlc� <br />