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3-12-10 ROBERT�iAMES& ASSOG`IATES,Inc. Shw 3 of 4 <br /> Allov able Lateral Soil Pressure: (IbsJft=per ft.) LP:= 100 � <br /> Diemetcr cf Round Footing: (ft.) bl := 3.0 <br /> Ma h = 19.991 <br /> Distance in Feet From Ground Surface h:= va <br /> to Point of Application of"P" <br /> Depth of Foating Below Grade: (fl.) d:= 10.5 <br /> Height of Concrete Footing: (ft.) dl := 10.0 <br /> Depth of footing below grade: (ft.) Dpth:= d —dl Dpth = 0.5 <br /> (LP•1.33) S� =qq3.333 <br /> Allowable Lateral Soil Bearing Pressure Pursuant S� := d1• 3 <br /> to the 2006 Inumational Building Code Section <br /> 1805.7 and Table 1804.2 with 100%increase for <br /> allowable 1/2"deflection at grade. <br /> � <br /> A:= 2.34•�S� z��bl <br /> d2:_ �Z J•Ll + � I + 436.AJ� d2=9355 � dl = 10 Ok <br /> Check Tensile Svess in Footine: <br /> Overtuming Moment About Heel Point: (ft.lbs.) Mh:= Ma+ (Va•dl) Mh=95793.U46 <br /> Trea;es a cantilever at botlom. <br /> Compressive Strength of Concrete: (psi.) fc:= 2500 <br /> Yield Strength of ReSar: (psi.) fy:= 60000 <br /> � n•(bl•12)3 S�y=45R0.442 <br /> Section Modulus of Footing: (in. ) Sw� 32 <br /> Allowable Concrete Stress: (psi.) �Ft= 0.65��5•�� �Ft= 162.5 I <br /> r(Mh•12)1 g=250.962 > �Ft= 162.5 <br /> Tensile Stress in Concrete: (psi.) ft:_ � Sw J <br /> REBAR REQUIRED FOR STRESS <br /> Desien of Reinfercine Steel in Caisson: <br /> Moment for USD Design: Mu: 1.7•Mh Mu = 162848.178 <br /> d= I(b I•l2)�.80] —4 d = 24.8 <br /> Mu•!2 cceti' =0.035 ju:= 0.76 <br /> "i'o Plot for"ju": coeff� � <br /> fc•bl•12�d� <br /> Use yield strength of direct bury pipe to check. <br /> Yield Strength of Pipe: (psi.) fy:= 42000 <br /> � ��,a <br />