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�, <br /> March 1�1. 2010 <br /> nddition to Stceves Rcsidcncc <br /> I.Ki1 .lob No. 10-OOR <br /> PaLc 13 <br /> that il'a builJing or structure should bc able to maintain long-tenn stability if�it is set back <br /> at Icast 1� Iect fi�om thc crest of the adjacent steep slope within ihe subject sitc. Since the <br /> ncw addition and dcck arc tu bc sct back about 85.5 tcct and 62 ('ect. respcctivcly. from <br /> thc stccp slopc. thcir long-tcrm stability should not bc compromiscd by thc ad.jaccnt stecp <br /> slopc. <br /> FOUNDATION SUPPORTS <br /> Convcntional footing I'oundalions may bc used to support thc proposcd ncw addition and <br /> dcck. 'fhc li�oting ti�undations should bc constructcd on or into undisturbcd. dcnsc silt�� <br /> linc sand and/or hard tinc sandy silt soils. or on structural till placcd on thcsc compctcnt <br /> n.Uivc basal soils. Watcr should not bc allowcd to accumulatc in cxcavatcd footing <br /> u�cnchcs. Disturbcd loosc and ovcr-saturatcd soils in footing trenches should bc <br /> cumplctcly rcmovcd down to lirm undisturbcd ncitivr soils ancl ���atcr sliould rumpcd dr�, <br /> ��rior to pourine concrctr for tL•� �botings. <br /> If thc abovc rccommcn,latiuns .irc liillo�vcd, our rcconuncndcd dcsign critcria for tboting <br /> lini�idatiuns arc as �iillu�rs: <br /> • Allo��'ablc soil hcarine pressurc. including dcad ancl li��c loads, should not bc morc <br /> lhan 3.000 psf liir liwtings pourcd on or into densc silt�' sand and/or hard linc <br /> sanch� silt soils, and not morc than 2.500 psl' for li�otines pourcd on structural till <br /> constructcd on thcsc compctent basal soils. 'I�hc fi�oting bcaring soils should bc <br /> ��crilicd an-sitc h�� a gcotechnical cnginecr alter the footing trcnches have been <br /> czca��atcd and hclin�r thc footines arc pourcd. <br /> � -—� <br /> � <br /> LIU & ASSOCIATES, INC. ' i� =� %� �) <br />