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disturbcd soils not rcmovcd (rom fi�oting c�cavmiuns prior to pl�cing concretc will result in additional <br /> settlemeni. <br /> Constructicn Considerafions <br /> Immedintcly prior to placing ccncrctc. ❑II dchris nnd luosc soils �hat xcumulntcd in thc fbotin+� <br /> excavations during fonning and titecl placement must be remuved Debris or luose soils not removed <br /> i tiom the foating excnvations will resull i��incrcased setdcmunt. <br /> If wet wcatlter wnstniction is planned, wc recontmend that all iootiug subgrades be protccted tising a Ican <br /> concrc[c mud mal. Thc mud m;u shotdJ 6c placcd ihc snmc dny �ha[ thc tiwting subgrade ii cxcavatcd <br /> and approved �i>r found;uiun suppoit. <br /> Lateral Resistance <br /> Lateral loads cun bc resistcd by pussi��c resisr,:ncc on the sidcs af[hc footings and by friction on the basc <br /> of tlic foolings. Passiv� resist.mce siwuld be cvnluated u;ino an equivalent 6uid dcniity uf 350 pounds <br /> per cuhic foot(pcf) where footings nre pourcd ncat againsl native soil or are surrotntdcd by stnictural fill <br /> compacted ro at Icas! 95 percent of MDD, as recommcndcd. Resistance to passive pressure should bc <br /> �:dculatcd from thc bottom of adjaccnt floor slabs an-1 paving or bclow a dcpth ol I foot whcrc thc <br /> id�acent arca is unpaved, as appropriate. Prictional resistancc can bc evaluated using 035 tbr the <br /> ��ocfficient uf basc friction against foutings. Thc abuvc valucs incorporntc a factor of satety of about L5. <br /> fi soils Ldjac�nt �o footings arc disuubcd during constmction, thc disturbcd soils must be rccumpactcd, <br /> othcnvisc thc Intcral passivc resislancc valuc must bc reduccd. <br /> Footing Diains <br /> �Vc recom;nend ihat perimerer footing drains be installed :iroimd thc building. The pcnmeter drains <br /> should be ins'talled at thc base oFtl�c cxtcrior Coo�ings, as shawn on Figure 3. The pciinteter drains shuuld <br /> bu provided with cicanouts and slwuld consist of'ut Icast 4-inch-dinmetcr perforatcd pipc placed on a 4- <br /> inch 6ed of, and surrounded by, G inches of drainagc matcrial cnclosed in a nan-woven gcatex[ilc fabric <br /> such as Ntirali IdON (or approvcd equivalent) to prevent fine soil &om migrating into thc drain material. <br /> ?l�c fooling Jrainpipc shuuld bc insi:dlcd at Icast I`� inchc: hdow thc lop of thc adjaccnt floor slab. 7'hc <br /> dr:unagc matcri:tl shoidd consist ul washcd 3/3-incn to No. 8 pca gravcl or "Gravel B.icktill ibr Drains'• <br /> ps Section 9-03.12(4)of�hc \VSDOT Standard Specifications. �Vc rccomntend that thc drainoipe consist <br /> of citlicn c�avy-wall solid pipc (SDR-35 P�'C, ur cqual) or rigid cornigated smuoth intcrior polycthylcnc <br /> pipe(ADS N-I?,or equal). Wc also rccommcnd against using ticxiblc tubing fbr footing dninpipcs. Thc <br /> ncrimctcr drains should bc slopcd ro drain by gravity, if practical, to a suitablc dischargc point, prcfcrably <br /> a storm drain. Ne recommend that the cicanouts bc cu�crod, and be placed in tltssh-mountcd utility <br /> boxes. 1Vatcr collccted in rao(dowiupout lines must not 'ic ruuted tu tlie footing drain lines. <br /> BELOW-GRADE WALLS AND RETAINING WALLS <br /> �; <br /> Design Parameters <br /> 1'hz proposcd building will include dock-high walls at the truck loading areas. The Jock-high walls <br /> I should be designed as retaining walls. The retaining walls should be dcsigned to rcsis't latcr�l soil <br /> pressures cyual to an cqwvalent Iluid dcnsity of 35 pcf. If the �calls will be rcstrained from rotation, �vc <br /> rccuntmend using an cyuivalent fluid density of 55 pcC N�IIs are assumed to bc restrained if top <br /> movemen[during backlilling is Icss than }1/IOOQ whcre FI is thc ��all hcight. Thcse lateral soii pressures <br /> assumc :hat thc ground surfacc bchind thc wall is hori�ontal. Additionol latcral pressures �huuld bc <br /> Fl6- 'S ..;�,nl-co �������� PtiAC I2 GEC�ENGIN[ERS�� <br /> J�eiu,:r-l`.. _r.�i9 <br />