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SEISMIC CALCULATIONS <br /> The loads considered under seismic loading are primarily inertial loadings. The wave passes the structure <br /> putting the mass into motion and then the mass will try to continue in the direction of the initial wave. In the <br /> calculations you see the one dynamic earth pressure from the wedge of the soil behind the reinforced mass, and then <br /> all the other forces come from inertia calculations of the face put into motion and then trying to be held in place. <br /> Design Ground Acceleration A=0.200 <br /> Horizontal Acceleration [kh =A/2] kh =0.083 <br /> Vertical Acceleration kv=0.000 <br /> INERTIA FORCES OF THE STRUCTURE <br /> Face (Pif) = (W 1)*kh(ext) = 2961.27 *0.083 <br /> Pif=246.46ppf <br /> SEISMIC THRUST <br /> Kae Kae =0.222 <br /> D_Kae = Kae - Ka = (0.222 - 0.177) D_Kae =0.044 <br /> Pae = 0.5*gamma*(H)^2*D_Kae Pae =184.78ppf <br /> Pae_h = Pae*cos(b) Pae_h =178.49ppf <br /> Pae_v = Pae*sin(b) Pae_v=47.83ppf <br /> TABLE OF RESULTS FOR SEISMIC REACTIONS <br /> Name Force(V) Force(H) X-len Y-len Mo lW <br /> 71 <br /> Face Blocks(WI) 2961 -- -0.67 -- -- -3832 <br /> Soil Block(W2) 0 -- 1.21 -- -- 0 <br /> LevelingPad(W18) 183 -- 0.00 -- -- 0 <br /> Pa_h -- 712 -- 2.79 1990 -- <br /> Pa v 191 -- -1.61 -- -- -390 <br /> P6 -- 246 -- 5.03 1240 -- <br /> Pae_h -- 178 -- 5.03 898 -- <br /> Pae_v 48 -- -1.61 -- <br /> Sum V/H 3199.88 1136.98 Sum Mrs <br /> Note: Calculations and quantities are for PRELIMINARY ANALYTICAL USE ONLY and MUST NOT be used for final <br /> n or construction without the independent review, verification, and approval by a qualified professional engineer. <br /> UltraWall 6.0.22298.930 13 <br />