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City of Santa Ana Job No: 01-3058-002-01-00 <br />September 25, 1992 Log No: 2-2662 <br />Page 24 <br />extended to a protected outlet at a lower..A <br />elevation, on a continuous gradient of at least 1 :+ <br />percent. <br />...'t <br />7.9 Footings - Retaining Walls <br />a. Footings should be embedded to minimum depths below <br />lowest adjacent grade, as indicated in Subsection <br />7.4. <br />b.Setbacks from tops of slopes should be as indicated <br />in Subsection 7.4.b, Notes. <br />c. The allowable bearing capacity may be taken as <br />indicated in Subsection 7.4.b., subject to <br />stability requirements. <br />d.Retaining walls situated at the tops of slopes <br />should be reviewed/analyzed for overall slope <br />stability.Setbacks,embedment depths and <br />allowable bearing pressures may need to be modified <br />accordingly. <br />7.10 Seismicitv <br />Structures should be designed for seismic forces in <br />accordance with UBC Section 2312, for Zone 4: or in terms <br />of Subsection 5.2.2, whichever is considered applicable <br />by the designer. <br />L-4 <br />-' I- <br />, <br />i <br />'·•k ; 1 ·I :4X 17'245