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' <br />� Utoana�cWci �vi� oh�cn�r,l ubnw ? �cci hclmc Ihc�•si��linp.,�n,im,i �m(ucc ii+. burinr It-r;. ll�c c��utr;icioi <br />, >L��uld bc prcpurcd lo haudlc grutmd�vnl�� �ccpage, if cnwunici cii. <br /> Foundation Settlemen[ <br /> , \'�'c estimate that the post-conslruction settlemem of fouiings fe�wided as recommendeJ ahove will he Iess <br /> than I inch. Diffcrcntial sctticmcid bci�vccn comp�rably loaded colwnn footiugs or alung a 25-fom <br /> s�ction of continuous w�dl fouting should be less than '/•. incli Ne expect most of the tooting sculements <br /> ' �vill occur as loads arc applicd. Loosc ur diswrbcd soils not rcmovcd from footing excavations prior to <br /> placing concrcm �vill resull in addilional seulemeni. <br /> Lateral Resistance <br /> , Lateral loads can bc resisted by passivc resislance on tlie sides of thc fixilings and by friction on the b;�se <br /> uf the 1'ootings. Passivc resistauce should be evaluated using am eyuivalem tluid densiry of 350 pounds <br /> per cubic foot(pct)whcrc footings arc poured ncat against n�uivc suil or are surcoundcd by stnswral fill <br /> , cnmpacled to at Icast 95 perceid of MDD, :�s recontmended. Resistance to passive pressure should Ue <br /> calculaied Gom ihe boltom uf adjacent tloor slabs and paving or bclow a deptli oP 1 foot wl�ere tlic <br /> adjucent arca is unpaved. as appropriate. Frictional resist:mce can be cualualed using 035 for llie <br /> ' coefTicient of base friction againsl footings. 7'he abnve values incoiporate a factur o(safety ot about 1.5. <br /> If soils adjacent to footings arc diswrbcd during constn�ction, the disturbed soils must be recotnpacted, <br /> othenvise the latcral passivc resistaucc valuc mus�be reduced. <br /> ' Constructlon Considcrations <br /> Immcdi;ucly prior to placing a�ncrc�c. :JI dc6ris and loosc soils tlmt accumulatcd in thc fuutin��. <br /> I c�cavations during fonning and stccl placcmcnt must bc rctnov^_J. UcUris ar loose soils not rcmovcd <br /> ftom lhe footing excavaiions will result in increased settlement. <br /> I If wct�vcather construction is planned,we recommenJ that all footing subgrndes be protected using a Iean <br /> conactc mud mat. 'llic muJ mat should bc placed Q�c smnc day 1hw tl�c footing subgradc is c�cavatcd <br /> and npprovcd fur foundation supporl. <br /> I \\+u reconnucnd Ih:u all completed footing cscava�ions he ohscrved by a represent�tive of our frm priur <br /> � tu placing mud mat, roiutbrcing �teel, anti stnictural concrete. Our representative will wnfinn that the <br /> bc;uing surface has becn prcp:�rcd in �� mnnner consistent with our recommendatiuns �md that thc <br /> v � subswi:�cc conditions:uc as expcctcd. <br /> FOOTING DRAINS <br /> �} �Vc rccommcud perimetar 1'ootiug drains bc insmlled uround the building. ']lic perimcter drains slwuW bc <br /> d installed ��t the base ot�ihe exterior footings. 'I'he perimcter drains should be provided with cleanouts and <br /> should consist of at Ieast �1-inch-di��meter perl'orated pipe pinced ou a 4-inch l�ed of, .+nd surruunJed h}, <br /> q 6 inchcs of drain;+gc matcrial cncloscd in a nmrwoven gcotcxtilc fabric such as Mirafi lAON (or app�'�����I <br /> j r�piivalent)ro prcvcnt finc suil from migrating into thc dmin miucrial,as sliown on Figure 3. 'fhc f'ooting <br /> driiu pipc shuuld bc installccl �t Ic;is� 1 R inches beluw the top of Ihe ndjacent floor slab. 'Ihe drainagc <br /> � �n;�icrial sliould consist of �vusLcd 3!S-inch to No. 8 pca gravcl or "Gravel IiackCdl (or Urains' per <br /> ti�•�i�i,�i 9-p;.12(�1)of thc 200G�VSDOT Stnndard Speciiications. Wc recommend the drainpipe consist ul <br /> cithcn c�:+vy.wall solid pipc (SDR-35 PVC, or cyuul) or rigid corrugated smooth intcrior polycthylcnc <br /> pipe(ADS N-12,or equall. We also rcconuncnJ against using ilexible lubing for tiwting drainpipes. '1'hc <br /> 1 _--'---__— _--_ __—_ _ _ —_— I�nf;C /I GEOENGMEEP� <br /> 19frA'a {h7F-PO'-00 <br /> � .h�lr 1-. .'OI;K <br /> �� <br />