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U TTRBLOC7K,NC. <br />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 <br />Horizontal Acceleration [kh = A/2] <br />Vertical Acceleration <br />INERTIA FORCES OF THE STRUCTURE <br />Face (Pif) = (W1)*kh(ext) = 3807.34 *0.075 <br />SEISMIC THRUST <br />Kae <br />D_Kae = Kae - Ka = (0.461 - 0.000) <br />Pae = 0.5*gamma*(H)12*D_Kae <br />Pae_h = Pae*cos(b) <br />Pae_v = Pae*sin(b) <br />TABLE OF RESULTS FOR SEISMIC REACTIONS <br />Name Force (V) Force (H) X-len Y-len <br />Mo <br />A* <br />Face Blocks(WI) 3807.344 <br />1.775 <br />6759.8 <br />Soil Block(W2) . 499.895 <br />3.009 <br />1504.28 <br />Pa_h -- <br />1110.03 -- 2.5 <br />2775.08 <br />-- <br />-L <br />Pa_v 11058.842 <br />-- 4.097 -- <br />-- <br />4338.31_l <br />Pif <br />199.842 -- 4.5 <br />899.29 <br />Pae_h <br />110.133 -- 4.5 <br />495.6 <br />Pae_v 105.054 <br />-- 4.097 -- <br />-- <br />430.43 <br />A =0.150 <br />kh =0.075 <br />kv =0.000 <br />Pif=199.84 ppf <br />Kae =0.461 <br />D_Kae =0.042 <br />Pae=152.20 ppf <br />Pae_h=110.13 ppf <br />Pae_v=105.05 ppf <br />UltraWall 4.0.16287.0 Page 11 <br />