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2909, 29-A, 29-8 <br />UNIFORM BUILDING CODE <br />EXC'ta''1'IUV: When 111%titred tii ao ordancc with Section 2908 (t). the allow- <br />able %tre%%c% mile he IRcicawd to U `t) F <br />Combined stresses sha.l not cxcecd those In Chapter'7. <br />3. Minimum dimensions. Driven pile% of unifoirn section shall have a nomi <br />nal outside diameter of not less than 8 inches. <br />+•� TABLE NO. 29-A—FOUNDATIONS FOR STUD BEARING WALLS --MINIMUM <br />REQUIREMENTS' ] <br />NUMBER OF <br />FLOORS <br />SUPPORTED <br />BY THE <br />THICKNESS OF <br />FOUNDATION WALL <br />t Ma1 <br />WIDTH OF THICKNESS <br />FOOTING OF FOOTMiG <br />(inch") (kld1M) <br />DEPTH BELOW <br />UNDISTURBED <br />GROUND <br />SURFACE <br />_ T UNIT <br />FOUNDATIONS <br />CONCRETE MASONRY <br />(kWh") <br />1 <br />6 <br />6 <br />12 <br />6 <br />12 <br />2 <br />8 <br />8 <br />15 <br />7 <br />18 <br />3 <br />10 <br />10 <br />18 <br />24 <br />'Where unusual conditions or frost conditions are found, footings and fcwndations shall be <br />as required in Section 2907 (a). <br />ZThe ground under the floor may be excavated to the elevation of the top of the footing. <br />'Foundations may support a roof in addition to the stipulated number of floors. Foundations <br />supporting roofs only shall be as required for supporting one floor. <br />TABLE NO. 29-B---ALLOWABLE FOUNDATION AND LATERAL PRESSURE <br />j <br />' <br />LATERAL <br />B SO. Fr <br />lBS SO. FT.` <br />LATERAL <br />SIlDING^� <br />I <br />ALLOWABLE <br />. OF DEPTH <br />CLASS OF 111ATL'RIALS2 <br />FOUNDATION <br />PRESSURE <br />PRESSURE LBS, <br />FT.i <br />BELOW <br />NATURAL <br />OPADl4 <br />C+OEF- <br />FICICK" <br />RESISTANCE <br />1.13S.40. FT. <br />I . Massive Crystalline Bedrock <br />40(i0 <br />1200 <br />.79 <br />2. Sedimentarti and Foliated <br />2000 <br />400 <br />.35 <br />Rock <br />3. Sandy Gravel and!or Gravel <br />2000 <br />200 <br />.35 <br />(GW and GP) <br />4, Sand, Silty Sand, Clayey <br />1500 <br />150 <br />.25 <br />San% Silty Gravel and Clayey <br />Gravel (SW, SR SM, SC, GM <br />and GC) <br />g. Clay, Sandy Clay, Silty Clay <br />1000? <br />IOU <br />130 <br />and Clayey Silt (CL, ML, MH <br />and CH) <br />'Lateral be- .-in# and lateral sliding resistance may be combined <br />'For vw! ,r suications OL. OH and PT we , organic clays and peatt, a foundations <br />Invest.—A—m shall be required <br />'All values of alkywable foundation pressure are ftx ftxxings having a minimum %idth of 12 <br />522 <br />