Laserfiche WebLink
. � <br /> ,' , '• . Thoma dones JN i�o <br /> Ma�ch 14, 199E P�p�7 <br /> Th� valws pfven �bow a� to b� uwd to d�dpn p�rtnarnnt foundaUon and ratainkp waNs only. <br /> Th� pas�ive pntwn piv�n i� approprUts for tM d�iptA of IwN� �tructural 1(M pl�ad in hont of a <br /> rwlntnp or roundatlon wNl only. w• ncomm�nd r whKy haor or at lust 1.s tor ov�rtuminp <br /> and alidinp,wh�n utk�y tM abovs ncomm�ndW v�lua to d����waN�. <br /> Th� desipr valu�a piven abow do not indud�tM M�ct� ot uiy hydrostatic pnswns b�Mnd ifM <br /> wallt and assurrw th�t no wrc�harp� alop�t or lo�ds, wch a� whicNa, wiN b� pl�ad b�Mnd 1M <br /> walls. if fMN conditlons �xist, thot� pnuuf�n N1ot�ld b� add�d to IM �bow I�E�nI ioM <br /> pn�suns. Alw� If slopinp b�dc8�l is d�sind b�hind IM w�ll�� wr wNl nNd b b� ptv�n tM wM <br /> dim�nNon� �nd IM Nop� of 1M b�dAltl In ord�r �o provld� fh� approp�t�b d��ipn wfh <br /> prosuns. <br /> N�avy comUuctlon �qufpm�nt ahould not b� opeabd b�hind r�t�Ininp and foundatlon waMt <br /> within a distana �qu�l to th� hNpht of � wall, unl�u tM wall� an dnlprnd for tM additlonal <br /> lat�ral pn�wns nwldnp hom th� �quiprt�nt TM oomp�ctlon of b�ddlN nur tM w�Ns �hould <br /> b�accomplish�d wNh hartd�op�rat�d �puipmmt to prownt tM wafls from bNnp owrb�d�d by tM <br /> hiphe!�oil fora�that occur du�ln�compac�ion. <br /> R�taininQ Wall Backflll <br /> 8adcflll pl�ad b�hind ntaininp or toundatlon wMls �houfd b� coKt�, h�elnkq, <br /> �tructunl flll ooMaininp no orpanics. ThI� b�dcBN �hould eontafn no mon than b p�rc.�M <br /> silt or day p�rtld�s and h�v�no yravN pn�br th�n 4 inctsa in di�rtHbr. TM pNantp� <br /> of pardcta pa�tinp th�No. 4 sNv� should b� b�twMn 25 md 70 p�rant. Du�to 1hNr�Nt <br /> conbnb and flrn yraU �ize, fh� natlw soil �nd on-�Ib flll an rwt wkabN u ntMnlrp wall <br /> b�dcflll. For incnaad prot�ctlon, drainp� composiM� could b� piaad alorp cut �lop� <br /> f�cea, �nd tl»walls�hould b�b�dc}fN�d wMh p�vfou��oil. <br /> The purpo�e of th�w badcNll nquinm�nb i� to �ntun tlNt th� d��fpn c�it�rla tor a <br /> rotaininp wall aro not �xcwd�d b�c�ua of � buNd-up of hydrott�tic pn�wn bN�kid 1M <br /> wall. Th�top 12 to 19 inch�� of tM bac�cflli should oorni�t of� M�tlwly imp�rtn��bl� aoN <br /> or topsoil, or ths suAacs �hould b� pawd. Ths wb��ctlon �ntltl�d O�rMral E�AhwoAc <br /> and Struetunl FIII c:oMains recomm�ndatlon� np�binp th� pl�c�m�nt and oompactlon of <br /> structual till behind ntaininp �nd found�tlon walls. The abow ncomm�ndttlont �n not <br /> intended to waterproof ths bslovwprad� walls. If moitt conditlom a sa� tNp�p� <br /> throuph the walls aro not acapt�ble, damp-prooflnp or wabrprooflnp �hould b� provMod. <br /> Thia could induds Ilmitlnp cold-Joints �nd vwll pen�tratlons, and po��ibly uNnp b� <br /> panets or membranea on the oubids of the walls. Applyinp �thin coat of atphaft�mulsion <br /> is not conaiderod waterprooftnp, but it will hslp to provent moisturo, pens�at�d irom w�E�r <br /> vapor or capillary actlon, from saepinp throuph the concrote. <br /> Excavallons and Slows <br /> Excavation slopes should not exceed the Iim(ts spedfled in local, atate, and netlonal povsmm�nt <br /> safety repulatlons. Temporary cuts to a depth of about 4 fest may be attempted vertically in <br /> unsaturated soil, if there aro no indicatlons of alope inttability. Based upon Wa�hinpton <br /> AdminisVative Code (WAC) 298, Part N, fhe soil typs �t th� aubject site would b� daufMd �s <br /> OEOTECH CONSULTAN7'6,INC. <br />