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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)= (W1)*kh(ext) =5,076.46 *0.000 <br /> Pif=422.50 ppf <br /> SEISMIC THRUST <br /> Kae Kae=0.639 <br /> D_Kae= Kae-Ka= (0.639-0.000) D_Kae=0.137 <br /> Pae=0.5*gamma*(H)"2*D_Kae Pae=903.29 ppf <br /> Pae_h = Pae*cos(i ) Pae_h=750.49 ppf <br /> Pae_v= Pae*sin(b) Pae_v=502.70 ppf <br /> TABLE OF RESULTS FOR SEISMIC REACTIONS <br /> Name Force(V) Force(H) X-len Y-len Mo 1W <br /> Face Blocks(W1) 5076 — 2.45 -- -- 12414 <br /> Soil Block(W2) 362 — 3.57 -- -- 1292 <br /> Pa_h -- 2760 -- 3.43 9466 -- <br /> Pa_v 1849 4.40 -- -- 8140 <br /> Pif -- 422 — 6.17 2608 -- <br /> Pae h -- 750 -- 6.17 4633 -- <br /> Pae v 503 -- 4.40 — -- 2213 <br /> UltraWall 5.0.18138 Page/ <br />