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3D:7T 66. 9T�80 3JI1 XN <br />NEMEL Communkadons, InC. <br />Aupual78, 1999 <br />dT6£ TZ8 90Z�NGI1tf�0'I <br />9-91 A�413127-0 <br />Page 7 <br />removed. Soils should be free,of organic matter. If or�anic matter is difficuft or ImFossible <br />to remove, the sois should not be utpized for strudur'al flll purposes. <br />Placemeni and Comaaction: Generally, CDF and lean-m(x concrete do not require spedal <br />placement and comp��ctbn procedures. In conirast, pit-fun, sand, cnuhed soG, soN mixtures, on- <br />site sdls, and recyded materials should be placed in horizontal IHts not ezceedkg 8 inches in bose <br />lhidcness, and each I�1 should be thoroughry compacted wRh a mechaniql oompactor. Using the <br />Modifled Proctor maxirnum dry density (ASTM:D-1557) as a standard, we recommend that <br />sVuch�ral fitl used for various on-slte appGcadons be compacted to fhe minimum densities <br />presented in Table 8. <br />Suburades and Testlna: Regardless of IocaUon or mate�ial type, all stn�ctural flll should be pla�d <br />over tirtn, unyield(ng subgrades. We rewmmend that an qGRA represeniative be albwed to <br />observe all subgrades before flll placement begtns, and ta perfortn a series of in-place density iests <br />dudng strudurel fl!I placemerrt. In this way, the adequacy �of soil compadion efforts may be <br />evaluated as earthwork progresses, to m(nimize construcdon �delays. <br />l.1Npp01YlCqG Pwptb\6WtlN1]OODI1�Ni1 NraY�Ndtl FrpN WLrpe <br />SI/ii#� �i11M[�1 Wtl IiL8Y3 tl7FJV: AIdZS�Z � 66-9I-8 �A8 y�5 <br />