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.�{.� � , t_ , <br /> , ,_ _; ; �IVIL DESIGN <br /> Fr, , � � <br /> ; ��1 1_ _ � ��' �:' ��3 ,~� � �.� i-, n`°� �� :�; <br /> PROJECT: 3315 GRAHAM HILL ROAD PROJECT NO: 11-110 SHEET: 1 OF 3 <br /> NO BACK SLOPE, 150 PS1=MAXIMUM LIVE LOAD <br /> LOCATION: ORONO, MINNESOTA BY: TPH DATE: 7/22/2011 <br /> A.GENERAL DESIG'�DATA <br /> Boulder,p= 140 pcf <br /> Wall Batter,i= 15.0 degrees <br /> Design Height,H= 7A ft(design height+embedment) <br /> Backslope,(3= 0.0 degrees <br /> Surcharge,q= 150.0 psf <br /> FS Sliding> 1.5 <br /> FS Overturning> 1.5 <br /> Bearing> 2.0 <br /> B.SOIL PARAMETERS <br /> cn(deg) c(ps� y(pc� <br /> Retained Soil 26 0 120 <br /> Foundation Soil 26 0 120 <br /> C.GEOMETRIC PARA�IETERS <br /> d�= 26 degrees <br /> a= 105 degrees(90°+i) <br /> (�= 0.0 degrees <br /> S= 17.3 degrees(2/3*d�) <br /> D.COULOMB EARTH PRESStiRE CALCULATIONS <br /> ka= 0.25 sin'(u +�) <br /> k, _ <br /> Pa= O.SyH`ka sin�a •sin(a —fi)• �+ sin(�+d)sin(�—�i) <br /> Pa= 740 lbs/ft � sin(a -8)sin(a +Q)� <br /> Pq= qHka <br /> Pq= 264 lbs/ft <br /> E.EXTER�AL STABILITI' — <br /> 1.OVERTURNING <br /> Overturning Moment <br /> WA�_l 8A'lFR <br /> Mo= Pa(H/3)+Pq(H/2) ^'� <br /> Mo= 2651 fr lbs � -- <br /> Resisting Momen[ � -- <br /> H= Design Height(ft) � � � <br /> D= Depth of Boulder(ft) � � — <br /> � <br /> L= Distance from overtuming _l__. � __ _________ <br /> point to centroid(ft) �� �� � <br /> Figure l:External Stability Diagram <br /> 8609 Lyndale Avenue S, Suite 200� Bloomington,MN 55420 <br /> Office:612-284-3696 <br /> Website:www.cdp-us.com <br />