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MSEW -- Mechanically Stabilized Earth Walls Grayson Square <br />Present Date/Time: Mon Aug 16 09:53:57 2021 C:\Users\henry.wright\Documents\MSEW Files\7829.01 LnL\18.67 Foot.BENp <br />SOIL DATA <br />REINFORCED SOIL <br />Unit weight, y 125.0 lb/ft 3 <br />Design value of internal angle of friction, 32.00 <br />RETAINED SOIL <br />Unit weight, y 125.0 lb/ft 3 <br />Design value of internal angle of friction, 32.00 <br />FOUNDATION SOIL (Considered as an equivalent uniform soil) <br />Equivalent unit weight, y equiv. 125.0 lb/ft 3 <br />Equivalent internal angle of friction, �equiv. 32.00 <br />Equivalent cohesion, c equi,,. 0.0 lb/ft 2 <br />Water table does not affect bearing capacity <br />LATERAL EARTH PRESSURE COEFFICIENTS <br />Ka (internal stability) = 0.3073 (if batter is less than 10°, Ka is calculated from eq. 15. Otherwise, eq. 38 is utilized) <br />Inclination of internal slip plane, fir= 61.00' (see Fig. 28 in DEMO 82). <br />Ka (external stability) = 0.3073 (if batter is less than 10°, Ka is calculated from eq. 16. Otherwise, eq. 17 is utilized) <br />BEARING CAPACITY <br />Bearing capacity is controlled by general shear. <br />Bearing capacity factors (calculated by MSEW): Nc = 35.49 N y= 30.21 <br />SEISMICITY (using AASHTO 2007) <br />Maximum ground acceleration coefficient, A = 0.701 <br />Design acceleration coefficient in Internal Stability: Kh = Am = 0.701 <br />Design acceleration coefficient in External Stability: Kh_d = 0.476 => Kh = Am = 0.476 <br />(Kh in External Stability is based on allowable displacement, d = 25 mm. using AASHTO 2002 equation) <br />Kae ( Kh > 0 ) = 0.7221 Kae ( Kh = 0 ) = 0.2705 A Kae = 0.4516 <br />Seismic soil-geogrid friction coefficient, F* is 100.0% of its specified static value. <br />Grayson Square Page 2 of 5 <br />Copyright © 1998-2021 ADAMA Engineering, Inc. License number MSEW-401027 <br />