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u8.'62'199G 05:J7 J06.'J'OJiS SHFA•A! �. RGTEi.i � Pa6E 08 r <br /> ' � � � <br /> I , JN 9lOSO <br /> i T�om�a Jones Pp�0 ; <br /> � M�rcn 14, 1NE � <br /> rain(orced with a minimum o(N3 reinforcinfl bar plecod on an 18-Inch prid. Isol�lfon joints shoul0 <br /> ba provided, where th� slabs Inten�ct cotumne �nd walls. Controf and expernlon joints shoultl <br /> siso be used to control crackinp from expansion and contraction. Se: ���tourth of ach alab. <br /> joints used ►o control snAnkaQa crackinp ahould extend throuph the upp <br /> The spscinp of control or axpaneion joints depends on the slab sh�p� and th� amount of �tNl <br /> � preventinp tha e�aponilon�ow}r�e weur undlteem�ntthydr t on occu enwill also nduce ahrink�p� <br /> ( cracklnp. <br /> Tho swcturai fill and rainforcinp mentionad above for tha yarape slabs ot th� other roaidenaf i� <br /> not necessary for th� slabs in tn� recitl�nca on Lot 13, provid�d that the slabs are suppoAed on <br /> compet�nt, netiva soil or swctural fllt placed above thi� competent soll. Onc� a9aln, the <br /> subflrade so�i must b� in a firm, non•yieldinq eondition at the llm� of slab conslruction or undsroleb <br /> fill plecement. Any sott enas encountered should be exavotad �nd roplacsd with ssleet, <br /> � impoAed, structural fill, <br /> IAll slabs-on•prade ahould be underiain by a capillary broak or dninaye lay�r consistinp of a <br /> minimum 4•inch thickness o( coarse, Iree•draininp, strvcturai fitl wiN e pndation simllar to thet <br /> discussed iater in p�gnant FojID,Q!!4� +�d R�Ii11J1�YlL!!!!• In areas whare the pasaape of <br /> moistura throuflh the slab is untlesirable, a vapor DaMer, auch as a amil plastic mambrane, <br /> � should be placad beneath the slab. Additionally, sand should be us�d tn the flnrpredinp proceas <br /> to reauca damay� to tho vapor bartfer, ►o prov�de unlfortn support und�r the elab, and to reduc� <br /> shrink�ps cracklnp by improviny th� concrat� curinp proc��c• <br /> �m,in�nt Found�tlon and R�t�lnlna Wdis <br /> I Rotuininp walls backfillad on only one side snould ba designed to resist the Iptaral earth preasurea I <br /> impoe�d by lhe soil tney retain. The foundations for thesa ntelninp wells should be Eeslyned I <br /> followinfl t;�• above recommondalfons for tn� houc� (ountlaUons on tha respectiv� lots. Th� <br /> followinp recomm�nded desipn parameters an Icr walls that r�strain level b�tkfill: <br /> IQaram�i�r __._ Dnian Velu! <br /> � Active Huth Prassuro' 3S P� <br /> I; ; Passivo Earth Prossuro 250 pct !I <br /> Coefticienl ot fricqon 0.30 <br />' ' Soil Unit Welpht �3� P�f I <br /> Wh�r�: I <br /> 1. pct i� pounds per cubic foot. <br /> ' 2. Active and posslve earth preasures �h <br /> ' computad usinq the equiv�l�nt fluld <br /> � dsnslUee. <br /> I • For nstrain�d walis that cannot d�fl�ct at laact <br /> � 0.002 tim�s their heipht, a uniform laterel • <br /> pnseure equal to t0 pef tim�s the helpht ot e wall <br /> ' s�owd be added to th� above sctiw �quival�nt <br /> ' fluid proe�un, <br /> QEOTECH COHiULTAN77.(NC. <br />� I __ - <br />