1303 MADRONA AVE 2016-01-01 MF Import

Geotechnicnl �ngineering Evalu2tion 1303 Madrona Ave - King December 2, 2006 RMI Fila No. 39306 Page 7 Sttvcturnl Fill Gcoernl: A.11 fill placed beneath buildings, paveinents or o:her seulement-sensitivc fcatures should bc placed as structural fill. Por thc purpuse of this report, sin�cturul fill is defined as mnrerial �hat is placed in accordnnce wiili prescribed methods and standards, and is monitored by an expericnccd geotechnical profnssienal or soils technician. Pield monitoring procedures would includc the performance of 1 representative number of in-pluce densiry tests to document die attainment of the desired degree of reiative compaction. The nreas to receive fill �hould be prepared as oudined in Uie Site I'reparatiort nnd Grading subscclion of this repod. Matcrials: Importcd structurnl (ill shnuld consist of a good quality, froc-draining granutnr soil, frcc of organics nt�d othcr dcictcrious mntcrial, nnd bc �ti�cll grndcd to s:naximum sizc of about 3 mches. Importcd, nll-weatlicr fll shoulJ mcct thcsc requiremenls, und also should contain ro more tL=n obout i perccnt fines (soil passing a U.S. No. 200 Sieve), based on that Gaction passing Uic U.S. 3/4-inch sicve. 'I'Lc on-sitc nativc soils predominandy comprisc mcdium sand widi so�ue silt. It may be feasible to use ihis mnterial as stnwtural fill, if it is rc!ntivcly free of organics and can bc moistu��e-conditioned to nenr- optimum moisture content for compnction. The necessary moisturo-conditioning may consist of drying tlic material, whicli �vould require an ndequate nren to spreud the mnterial uul. Drying ihc malerial nmy not bc possible outsidc oF thc summer season. Pill Placement: Pollowing subsradc preparation, placemeut uf tlie stnicturul fill mtiy procecd. All fill should bc placed in G- to 8-inch Aiick uniform lifis, and cach lili shoulel be spread evenly and be t6oroughly compncted pri�r to placemcnt of subsequcnt litis. All structurai fill underlying building ttreas should bc con,pacted to at Icast 95 percent of its mnximum dry dcnsity. Maximum dry dcnsity, in this rcport, rcfers to (fiat dcnsity ns determined by tlic ASTM D 1557 compaction tcst procedure. Tl�e moisture cuntent of Oie soils ro Uc compncteJ should be within about 2 percent of optimum, so that n rcadily compactable cundilion cxisls. It may be necessary to overexcavate nnd remove wet soils in cases whero drying to a compnctaUle candition is nol feasiUle. All compaction should bo nccomplished by cquipment of a type and size s�ifficient to a[iain the desired degc��e uf compaetion. RMI ASSOCIATES LLC G •d 6ST9-6�9 fD9E1 s��az?y��d P1N su9tsa❑ d9S°EO LO 60 JeW