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+ 4City of Santa Ana Job No: 01-3058-002-'01-00 <br />September 25, 1992 · 1- ' .Log No: 2-2662 <br />Page 18 <br />a.Dimensions/Embedment Depths <br />Min. Embedment <br />Minimum Minimum below lowest <br />Width Thickness -adjacent grade <br />(ft)(in) (ft) <br />Expansivity <br />Verv Low-Low Medium High Verv High <br />Equivalent 1-story 1 6 exterior 2.0 2.0 2.0 2.5 <br />wall footings interior 1.5 1.5 1.5 2.0 <br />(supporting 1 floor) <br />Equivalent 2-story 1.25 7 exterior 2.0 2.0 2.0 2.5 <br />footings interior 2.0 2.0 2.0 2.5 <br />(supporting 2 floors) <br />Retaining walls -Per <br />(to 5 feet in height)Structural 1.5 1.5 2.0 2:5 <br />5 + to 8 feet Design 1.5 2.0 2.0 2.5 <br />8 + to 12 feet 2.0 2.0 2.5 3.0 <br />Square column footings - <br />(to 50 kip)2.0 2.0 2.5 3.0 <br />b. Allowable Bearing Capacity <br />Embedment Allowable Bearing <br />(ft)Capacity (lb/ft2) <br />1.0 1 <br />2.0 2 <br />,500 <br />,000 <br />(The minimum recommended depth of embedment is 2 feet forexterior wall footings.) <br />(Notes: o The values obtained per item b. above may beincreased by one-third in the case of short- <br />duration loads, such as induced by wind or seismicforces. <br />L-* <br />-I .......... <br />I.---Il- ---I--* Wil--*.-