Laserfiche WebLink
St. Barbara Catholic School <br />Project No.: D-6289-01 <br />At -Rest Earth Pressure <br />Retaining walls (basement walls, underground vault, if applicable) <br />at -rest conditions. The recommended earth pressure for at -rest conditi <br />CITY OF SANTA ANA <br />Planning and Building Agency <br />may, lS. <br />Approved <br />FOR PERMIT ISSUANCE <br />Master ID: <br />Mwdesigned for <br />fluid density of 60 pounds per cubic foot without surcharge loading and without water. <br />Seismic Force (If applicable) <br />Lateral forces on retaining walls (exceeding 6 feet in height) due to earthquake <br />movements in accordance with Section 1803A.5.12 of the 2022 CBC for active and at - <br />rest conditions may be calculated as follows: <br />Seismic active Force = 11 H2 pounds/ft of wall (Inverted triangular <br />distribution, acting at 0.6H from bottom). <br />Seismic at -rest Force = 22 H2 pounds/ft of wall (Rectangular Distribution, <br />acting at 0.6H from bottom). <br />Where, H = Height of the retaining wall in feet <br />Footing Observations <br />All footing trenches for the proposed structure should be observed by a representative of <br />this firm to verify that they were excavated into competent bearing soils per the <br />recommendations of this report as well as to the minimum depths recommended above. <br />These observations should be performed prior to the placement of forms or <br />reinforcement. The excavations should be trimmed neat, level, and square. All loose, <br />sloughed or moisture softened soil should be removed prior to placing concrete. <br />New Parking Lot <br />Pavement Design <br />The pavement sections presented on the following page are based on the R-value data <br />20 <br />