2202 100TH ST SW 2023-02-07 - Laserfiche WebLink

—"""'a CORNERSTt3Nr= VVALLDESIGNER SEISMIC CALCULATIONS The loads considered under seismic loading are primarily inertial loadings. The wave passes the structure putting the mass into motion and then the mass will try to continue in the direction of the initial wave. In the calculations you see the one dynamic earth pressure from the wedge of the soil behind the reinforced mass, and then all the other forces come from inertia calculations of the face put into motion and then trying to be held in place. Design Acceleration A = 0.250 Displacment (d) d = 2.0 in Design Acceleration Coefficient Displacment Kh_d = 0.74 A (A/d)^0.25 = kh(int) = 0.110 Design Acceleration Coefficient Displacment Based (empirically) Kh_d = 0.74 A (A/d)^0.25 = kh(ext) = 0.110 Vertical Acceleration kv =0.000 SEISMIC THRUST INTERNAL Kae Kae Kae =0.315 D_Kae = Kae - Ka = (0.315 - 0.244) D_Kae =0.071 EXTERNAL Kae Kae Kae =0.320 D_Kae = Kae - Ka = (0.320 - 0.000) D_Kae =0.076 Pae = 0.5*gamma*(H)A2*D_Kae Pae =233 ppf Pae_h/2 = Pae*cos(delta)/2 Pae_h/2 =99 ppf Pae_v/2 = Pae*sin(delta)/2 Pae_v/2 =62 ppf INERTIA FORCES OF THE STRUCTURE Face (Pif) _ (W1)*kh(ext) = 840 * 0.110 Pif =92 ppf Mass (Pir) _ (W)*kh(ext) = 2,303 * 0.110 Pir =253 ppf Slope (Pis) _ (W)*kh(ext) = 0 * 0.110 Pis =0 ppf Dead Load(Pidl) = (DL)*kh(ext) = 0 * 0.110 Pidl =0 ppf TABLE OF RESULTS FOR SEISMIC REACTIONS Name Force (V) Force (H) X-len Y-len MG, Mr Face Blocks(WI) 840 0.75 -- 630 Soil(W2) 219 11.37 -- 299 Soil(W3) 3893 — 3.78 -- 14698 Soil(W4) 241 6.18 1490 Pa_h Pir - - 662 - 253 -- 2.33 3.50 1545 887 Pif -- 92 � -- 3.50 323 Pae_h/2 - 206 T' -- 3.50 345 Pae_W2 107 -- 0.35 -- 38 Sum V / H 5246.34 1111.27 Sum Mom 3100.86 17154.92 Note: Calculations and quantities are for PRELIMINARY ANALYTICAL USE ONLY and MUST NOT be used for final n or construction without the independent review, verification, and approval by a qualified professional engineer. CornerStone Analysis and Design 5.0.19309