4708 SEAHURST AVE 2016-01-01 MF Import

' Geolechnical Engineeriug Gv� ion 4708 Seahurst Avenue—Carier September17,2006 RMI File No. 37106 Page 7 a Structural Fill Gencral: All fill placcd beneath buildings, pavemcnts or other setticmcnt-sensitivc features should be pluced as sirocturol fill. Por the purpose of this report, structural fill is defincd as material that is placed in ...corJancc with prescribcd mcthods and st:mdards. and is monitorcd by an c�pericnced gcotcchnicnl professional or soils Iechnician. Picld monitoring proceAures would include thc perfominnec of a reprcsentative �,��„�� ,r ��-ni:icc densi�} tcsls lo document the anainmenl of �he desircd degrec .if relalivc compaclion. '1'he areas to reccive fill should be preparcd as ouUined in the tiite Preparalion and Grading suhscclion of this rcpnA. Matcrials: hnporlcd strucWrnl fill slwuld cunsist of a good yualit�. Gcc-draining granular soil, frcc of organics nnd othcr dcletcrious maicrial, and bc wcll graded to :i nu+ximum sizc of about 3 inchcs. Imponcd, all-H�cathcr fill shuuld mcct thcsc rcquircmcn�s, and nlso should contain no morc than ahout S ��,� r�,�s �So�i n.ssing n U.S. No. .^00 Sicvc), b:�scd on that Gaction passin�, thc U.S. 3/4-inch sicvc. Thc on-sitc native soils predominantly comprisc medium sand with somc sil�. It may be fcasiblc ro usc tl�is matcrial as sWcwral fill, if it is rclativcly frcc of organics and cun bc moisturc-conditioned to ncar- optimum moisture conlent for compnction. The necessary moisturc-conditioning may consist of drying thc mnlerial, which would requirc an ndequatc arca to sprend the malerial ou�. Drying the material may not be possible aulsidc of the summer senson. Fill Placement: Pollowing subgrade preparation, placement of the stn�ctural fill mny proceed. All fill should be placed in 6- to S-inch thick unifonn litls, and each lifl should be sprcad evenly and bc thoroughly compactcd prior to placement of subsequent lifts. All structural fill underlying building areas should bc compacted lo at Icust 95 percent of its maeimum dry density. Maximum dry density, in this repon, refers ro lhat density ns deterniined by tiic ASTM ll 1557 cumpaction test prceedure. Thc moisturc contcnl of thc soils to be compacted should be within nboul 2 percent of optimum, so that a rcadily compac�able condition esists. It ma� be necessary to overexcavale and rcmove we� soils in cases whcrc drylllb' f0 8 COOI�)�C18I7IC COOIIIIIOII Iti I101 �l':Iti�IIIC. AII compnction should tx accomplished by cquipment uf n type nnd siu suflicient tu auain the desired degree of rnmpaction. RMI .4SSOCIATES LLC gll �