Laserfiche WebLink
�. <br /> Occobcr 1 t.2o I t <br /> Mr.IIurve�•Jubie <br /> L&A Job No. 11-064 <br /> 1'agc 12 <br /> • 'l�hc minimum depdi to Uottom of peruueter footings belo�v adjacent linal e�terior grade <br /> should be no less than 18 inches. The minimum deplh to bottom uf thc interior footings <br /> belo�v top of�lonr siab should hc no lcss than !2 inchcs. <br /> • 'l�he minimttm���idil� should bc no Icss dia�� 16 iuches for continuous lootings, and no Icss <br /> than 24 inches for uidividual footings. zxcept those f'ootings supporting liglit-�cei�,t <br /> porches tuiJ�vood dcck. <br /> :� one-ihird increa.ac in tlie above recommended allo�vablc soil bcnring pressures may he uscd <br /> when considering sliort-temi. tratisitoq', �ti'ind or seismic loads. For footing foundations designed <br /> and constructed per reconunendations above. ��'e estimntc thnt the ma.�imwn total post- <br /> constructiun seldement of flie buildings shuuld be 1/2 inch or less and the differcntial settlement <br /> across building width shculd bc 3/8 uich orless. <br /> Luteral londs on the ne�v residencc c:�n be resisteJ by Q�e I'riction force bet��•een the foundations <br /> wd tlie subgrade soils or il�e p:usive eanh pressure acting on tl�e belu��•-gradc portion of the <br /> I'oundations. ]ror die latter, Qie foundations must be poumd "neut" uu_ainst undisturbed soils or <br /> bac�lled �vith u elea�i, fneo-draiiung, co�npacted structural filL \�l'e recommend that an <br /> equivalcnt fluid deusity (EFD) of 350 pcf(powids per cubic foot) for the passivc cartli pressure <br /> bc uscd for ltdei�l resistance. '1'hc abovc passi��e pressure ussumes that the backfill is lc��el or <br /> inclines up�vard belund the fuundations lor a horizontal distancc at lcast hvice the depth of the <br /> foundations belo�v final grade. A coefficicnt of fricuon of 0.60 bet�veen the found�tions and die <br /> subgrade soils ntac be used. I1te above soil pt�rameters are unl'actored vnlues,:uid a proper fector <br /> of safen• s6ould be useS in calculating the resisting forces agaiust latcral loads on the buildings. <br /> LiU & ASSOCIATES, INC. <br /> �� � <br />