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Vickers E_ngineering& Consulting,LLC <br /> 1+441 vllla ewo.A't_7rive,�_r�en t'r;rnie,n.1N i5 i47_1 loo <br /> Pkone: •>5L-9oi-8'71 t :3 x: ?5Z-hZ6-iaJl <br /> ry i s ke ri1ravi c�r.ry e n v r o m <br /> Boulder Wall Calculations - 6-foot Total Wall Height <br /> Project VEC 17-003 - January 8, 2017 <br /> Willow Hill Guest Residence, Orono, MN <br /> Page 2 of 2 <br /> Calculate Overturninq Mo <br /> ment: \ <br /> Driving Moment, Mo:= 5•Ka•^is•Hr•Hr•cos(81 — ) Hr)II + Cgs•Ka•Hr•�2r ail Mo= 1208.3lbf <br /> Calculate Resisting Moment: /J L <br /> Resisting Moment is calculated by taking the sum of the weights times the moment arms for each section of wall above <br /> W1•(Wba— Wt)•(3) <br /> 2) <br /> M1 := M1 = 2501bf <br /> rr 2 lft <br /> W2•L(Wba — Wt) + --+tJ <br /> M2 := M2= 1968.81bf <br /> (I ft) <br /> W2•(Wba) <br /> M3 := 2 ) M3 = 1406.31bf <br /> lft <br /> Resisting Moment, Mr:= M1 + M2+ M3 Mr= 36251bf <br /> Factor of Safety. Overturning: <br /> FOS Overturning, FOSot:= Mr FOSot= 3 <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 /> FnninPPr unriar the laws of tha Stats of Minnasnta <br /> XonaldPE <br /> Registration Number: 24065 <br /> January 8, 2017 <br /> ~EnS•ineerinS,5olution5Foran unstable world <br />