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i <br /> � i. `u�uc�ur,d lill �ih�c,�l m cun>uuct p:ul:in:: .�,iei,. iu b;icl:l�ill utdiip irruchrs ;mJ i�. >.u������i� huil�lir��'�. <br /> ❑nd iloor slahs shuuld cunsist of inyuticd gravcl burru�v as dcscribcci in Sccliun 9-0i.l l(I) of :hr <br /> � 200G Wasliingion Suilc pepa�uncm of"I'ranspu�l�uion (WSDO'f) Stnndard tipcciliratiuns, ��ii6 <br /> ihc additional resUiction that Uic fines content 6c limilcd t�� no morc ihan :,percent. On-silc sili <br /> ;md clay soiis arc nu� suii:�blc for usc a�shvciural lill. On•sitc �,lar,ially cousolidat��d soils (sih� <br /> i sand)may be used provided tha� the soils are conditioned for the required compactiun. <br /> � ?. Svuctwal till pL•ucd immediately outsidc helow-grale walls (drainage zone) or around fooiin� <br /> dnins should consisl ollvashed 7/8 inch to No. R pea Fr,rvcl m'con(omi to Section 9-113.12(�1) m <br /> � Ihe 2006 WSDO'f Standard Specifications,as shown on }'iSure 3. <br /> 3, SuUclural fill placed as cnished surfacing hnse course below pavements shnuld confrnm �o <br /> Section 9-03.9(3)ol'Ihe 200G W SDO'P Standard Specific�tions. <br /> � 4. Stniclural fill placed as capillary brcak bclo�� slabs should wnsist of I'h-incli minus cican <br /> crushed gnvcl witli negligible sand or silt in confommuce �vi1L Section9•03.1(4)C, gi;�ding <br /> No. 57 oi the 2006 �VSDO'P Slandard Specificatious. <br /> 1 Rcuse o(On-silc Soils. Most of Ihc ncar swii�cc on-sitc soils consist of fill, sills and clays, and nativc <br /> silty sand deposits, which coutain a high percent:ige of fines. Consequently, most of the on-site soils�cill <br /> � not be suitable Tor reuse :u structunl (ill. Suilable glacia0y consolidaied silry sand soils may be uscd <br /> during the dry summer months; however, only a locnlized arca may be encountered dnring constniction. <br /> - Lxisting sand and gnvcl fill may be rcused i(sep.ir.rtcd Juring excavating and if not contaminated �rith <br /> fines. �xisting silt and clay deposils should not bc rcused as ttnictard 511 on Ihe site. <br /> � On-silc nativc silty sand dcposi�s arc e�pccled to bc suilablc for suUGural lill in arcas requiring <br /> compaction to at Ieast 90percent ol' MDD (per ASTM D 1$57), provided the work is accompiishcd <br /> � during the nonn:+lly dry scason (Junc through Septembcr) and that thc soil can be properly moisturc <br /> condi�ioncd. It may bc ncccssary to impurt sand an.l gi,rvcl with a low tincs cuntcnt to achicvc adeyu;itc <br /> compaction for support of pavement areas, iluor slabs and slnicwres for wet we.uher constn�ctiun. <br /> Imported sUtutunl fill consisting uf sand and gravcl (VVSDOT gravel borrow) should bc planncd undcr <br /> I all building floor slabs�nd foundation clemems and if constructinn occurs during�eet wcather. <br /> 1 <br /> fl�e cmitracWr should plan to cover and maintain all f ill stockpiles with plastic sheeting if it will 6e used <br /> i ❑s strucuiral fill. 'fhe rcuse of on-site suils is highly dcpendem on dre skill of�lu contractor and schedule. <br /> � and we will work with the design�cam and contractor to maximize thc rcuse af on-sile till soils during the <br /> �vet nnd dry scasons. <br /> f Itcuse of tisisling Asphalt nnd Concrete Rubble. Gaisling asphalt pavement,base cowsc, and Pottland <br /> � cemenl concrete n�bhle may be rcused as stnictural fill if properly cn�shed during dcmolition. Rccycled <br /> aspl�:dt pavemcnt should no1 be usecl as s�ructural fill under building foundalions. Portland cemen� <br /> ( cnnc;ca nibble and base course malerials may be reused as xtn�etural fill throughout the projecL For use <br /> � as generol titnictural fill. Ihc �isphnit anJ concrc�e ivbble slwuld be cnished or otl�envise ground up nnJ <br /> should mect Ihe graAatiou rcquirements tbr gravel borrow ,�s described in Scelion 9-03.14(I)of the 2UOG <br /> I WSDO'I' Siundard Specificntiuns. 1f'recyded nsph�lt and�or concrcte will be used under paventent .ireas, <br /> wc reconnnend thal it mect the graJation rcyuirements f'or enishcd surlacing b�se course as describcd in <br /> ticstion 9-03.�)(31 ofthe 200C, �4SnOT St.�„a,�a sr���r��u��,s. <br /> Fill Plnccmcul and Contpuclion Critcria. Slructur.�l fill shuuld bc mechmiicully cumpactcd to a tinn. <br /> I non-yiclding condition. Structural fill shuuld be placed in loosc lifis not excceding S to 10 ind�es iu <br /> thickness. 71ie actual Ihickness will be dependent on the strucmrnl fill material used and the type m�d sizc <br /> I <br /> FilrKo.5N3n�007-Ou �'uA�6 GEOENGINEER� <br /> r JuO�f7.IOO,V <br /> I <br /> 5� <br />