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August I R, ZOIW <br />Mr. Jim'I humas <br />Rrh�cdcrc Lals 32 and 33 <br />LK,� .lob No. 4A088 <br />Pagc I G <br />as rccummcnJcd in Ilic SI'I'G DIZAINAGIi scctian ol' Ihis rcport. should ulso hc proviJcJ liir <br />liiundaliun anJ rctaiiiing wcdls. <br />tiLAlt-ON-CItAIH? FI.00RS <br />tilab-un-gradc Iloors, if uscd. shoulJ hc �il.�«a �,�, r���„ ����,��,��i� n���narcd as oullined in Ihc 5117; <br />Pltlil'ARA'I'IUN AND CiI•:NI?IiAL IiAR"I IIWORK :md Ihc S'fRUC"1'URAI, PII.L sccliuns of <br />lhis rcport. Whcrc moislw�c con�rol is crilical. �hc slab-on-�r:idc Iloors slioulJ hc placcJ on a <br />capillary brr.�k �ahich is in Wrn placcd on Ihc compucicd suhgraJc. 'I hc capillap� brcuk should <br />consist of a minimum liiur-inch-Ihick laycr ol' frcc-draining gr:���cl ur crushcJ rock conlaining no <br />tnorc Ihcm i'%� hy wcighl passing �hc No. 4 sicrc. A��;ipor harricr. such as a G-mil plastic <br />n:cmhranc, may hc placcd ovcr Ihc capillary brcak. as rcyui�cd. to kcep moislurc I�rom mi�:rating <br />up�vards. <br />SI"1'I? UItAINACI�. <br />I�;xc:���ation fur BuilJin� I�oulprinls <br />R�c do n�il anticipalc Ihc c�ca��aliun liir thc huilding liwlprinls lo cncounicr gruunJwalcr. If <br />rncuunlcrcd. Ihc buUom ofcsca�aliun should bc slopcd and dilchcs cxcavalcd alung Ihc bascs of <br />Ihc cul slopcs lo Jirccl collcctcJ gruundwalcr inlu a tiwnp �,it I'rom which �valcr can hc pwnpcJ <br />uul uf Ihc huilJing li�ulprints intu a ncarhy s�onn �cnrr. A laycr of 2-inch crushcd rock shotdd <br />bc placrd u��cr linn undislunc�d suhgraJr soils undcr li�olings .mJ on-gradc slahs, as requircd, lu <br />prutrcl Ihc suils IFnm �lishuhancr h�� cunsU•uction U'aflic. 'I his crushed rock busc shoulJ bc built <br />lu ,� Icw inchcs abu��c �ruunJ��alcr Icvcl, but not Icss than 4 inchcs lliich. "I'hc crush ruck basc <br />shuuld hr comp;icicd in I'-inch lills lu a non-yiclding statc with a vibr.riury nurhanical <br />cunt�r,irlur. <br />LIU & ASSOCIATCS, INC. <br />15� <br />