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Oolite retaining wall12/1/2022 One is the check for an overturning moment and the other one is the check for sliding. There are two checks to consider the stability of the retaining wall. Substituting the values, we have the following results: Values of Coefficient of Pressure, ka and kpĪccording to Rankine and Coulomb Formula, the following are the equation in calculating the coefficient of pressure: Pa 3=ωK a h →eq.3, where h is the height of surcharge.Pa 2=1/2 ɣH w 2→eq.2, where Hw is the height of the groundwater level. 1, where H is the height of retained soil Notice that the pressures acting on the wall are equivalent to the area (triangle) of the pressure distribution diagram. Structural Engineers: What's The Difference?Ĭonsidering the Figure A.3, we can derive the following equation for the active pressures, Pa and passive pressure Pp. Figure A.3 below is most likely our analytical model. Based on our example in Figure A.1, we have the forces due to soil pressure, due to water and surcharge load to consider. Sketches of the retaining wall forces should be considered to properly distinguish the different forces acting on our retaining wall as tackled in the previous article, Retaining Wall: A Design Approach.
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