1222 GRAND AVE 2018-01-02 MF Import

; � April 7, 2008 Mr. Don Lcvin L&A JoU No. 8A037 Pagc 1 I If thc abovc rccommcndations arc follo��cd, our rcconuncndcd design critcria for footing foundations arc as follows: • �Vlowablc soil bcaring pressurc, including dcad and livc loads, should not bc morc than 3,000 psf for footings pourcd on or into dcnsc silry sand ancUor harJ finc sandy silt soils, and not morc than 2,500 psf for footings pourcd on stnictural fill conslructcJ on thcsc compctcnt basal soils. Thc footing bcaring soils should bc vcrificd on-sitc by a gcotcchnical enginccr allcr thc footing trcnchcs have bcen c�cavatcd and beforc thc lootings arc pourcd. • Thc minimum dcplh to Uottom of perimctcr footings bclow adjxcnt final estcrior gradc should Uc no Icss lhan 1S inchcs. Thc mininnnn dcpth to bottom of thc intcrior fuolings bclo�e lop of floor sl:�b should bc no Icss than I: inchcs. • 'I�hc minimum width should bc no Icss Ihan �G inchcs for continuous footings, and no Icss than 24 inclics for inJi��idual footings. esccpt thosc footings supporting light-��cight porchcs and wood dcck. A onc-lhird incroasc in thc abovc rccommcndcd allo�vablc soil bcaring pressures may bc uscd ��hcn considcring shorl-temi, transitory, wind or scismic loads. For footing foundations dcsigned anJ constructed per rcconunendations abo��c. �ee estimatc that thc masimum total post- construclion sctticmcnt of thc buildings shoulJ hc U3 inch or Icss and thc diffcrcntial sctticmcnt :�cross buildinc ��idth should hc 3/S inch or Icss. Latcral loads on thc nc�c residcncc c:m bc rcsistcd by thc I'riction forcc hchvccn thc foundations anJ thc subgradc soils or thc passivc carth pressurc acting on thc Uclow-gradc portion of thc I'oundations. �or thc laticr, thc foundations musl bc pourcd "ncat" against undisturbed soils or hackfillcd with a cican, frcc-draining, compactcd stnictural filL Wc rccommcnd that an cyuivalcnt fluid dcnsity (CfD) of 350 pcf(pounds per cubic foot) for thc passivc carQi press�vc LIU & ASSOCIATES, INC. ; „r � i ��\ � i � ,;