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,.:, <br /> �' , � ' �IVIL DESIGN <br /> I � � �� �� _. ' .. . ::' � �' �w � <br /> � 1a � ' � �b i <br /> PROJECT: 3315 GRAHAM HILL ROAD PROJECT NO: 11-ll0 SHEET: 2 OF 3 <br /> NO BACK SLOPE, 150 PSF MAXIMUM LIVE LOAD <br /> LOCATION: ORONO, MINNESOTA BY: TPH DATE: 7/22/2011 <br /> Boulder H D L p MR <br /> Wall (ft) (in) (ft) (pc� t s <br /> 1 8.00 34.0 2.49 140 7896.7 <br /> MR= 7896.7 frlbs <br /> FS Overiurning= MR/Mo <br /> FS Overturning= 2.09 >1.5 OK <br /> 2.SLIDING <br /> - Sliding Resistance <br /> - Determine Area of Mass <br /> B]ockArea= 22.7 sf <br /> - Determine Weight of Mass (RF� <br /> VF = Boulder Area*p <br /> VF = 3173 lbs/ft <br /> RF =VFTan(33)+109(Lab Testing) <br /> RF = 2170 lbs/ft <br /> FS Sliding= RF/(Pa+Py) <br /> FS Sliding= 1.71 >1.5 OK <br /> 3.BEARING PRESSURE <br /> - Eccentricity <br /> e=D/2-(Mx-Mo)�F <br /> e= 0.12 <br /> e < D/6 <br /> - Applied Bearing Pressure(under bottom boulder) <br /> qm�= for non-eccentric footing-VFlD <br /> qm�= for e<D/6-VF/D*(1+6e/D� <br /> 9m�= for e>D/6-4*VF/(3*(D-2*e)) <br /> qm�= 1406.3 psf <br /> 8609 Lyndale Avenue S, Suite 200� Bloomington,MN 55420 <br /> Office: 612-284-3696 <br /> Website:www.cdp-us.com <br />