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I 01200 P�e 7 <br /> EARTHWORK <br /> I1. Conswct the fill W minimum elevadau ot tA foot, aod a ma�dmum devadon of 1.5 teet, <br /> above the top ot the pfpe. <br /> Iz. Ezcavste the tren�h. insroU pipe� ana plux fiu m acoordance wim these spedficaaom. <br /> I 3. Wherc ven�width tolerenca are acaeded due a Convactor'a opentlon, and rcdaign <br /> is rcquirod vith a resultant increau In mst for atra�ger pipe andlor spedel installedan <br /> procedurea ue necasary; cost tor the redaign and incrcaud oost of pipe or installatlon <br /> ahall be et the Convactor'� e:pense. <br /> ( C. Deaater pipe trenches during excavadon, U requircd, using a dewatering method which shall <br /> meintein growdwater level at leut 1 toot below excavadon grade and which shall nut remove soil <br /> Iin the dewatedng procxs+. <br /> 3.04 TRENCH FOUNDATION PREPARATION <br /> I A. Wherc the Enginecr determinea that due W vet or oNerwase unsuWe aofl the vench is incapable <br /> of properly supporting the pipe,or afiere wuuiUble matedal edata that Is not In accordance with <br /> Ihe foundadon spedflcadona,the Convactor thdl rcmove tu�matedel to the depth required by <br /> ( the Engineer and rcplaa to the odginei eacwadon gnde wdth toundetlon mate�ial crnulsdng of <br /> � coune gravel or leen concrete. Dlapose�excawted matedels at an approved waste aite. When <br /> remowl of unatable material Ia required due w the fault or neglect of the ConvacWr in his <br /> I pedortnana at shodng and sheedng, de�ntering,or other spedtied rcqulrements, the ruWtlng <br /> excavadon, and replaament :hall be at the CaiVactors e�pensa It removal is txyond the <br /> Convacv�r's conuol,all caab involved in the ewcrvadon and diapoaal af wuuftable matedal aheil <br /> be included in the Contract e�ocavetlon unil pria. <br /> IB. Beforc the installetlon ot pipe,mdsarc oondidon ihe netive adla to�vithin 2 percent of optLnum <br /> mdature and mmpect the native vench bonom or the top of tl�e towdatlon meteriel a at leazt <br /> I 90 pera:nt o(me�dmum dry densiry(ASI'M)D1557) (95 perant under awctures and roedways) <br /> for depth af et leut 6 inches. Ptace u�d aompact rcquired bedd�ng matedel W a uniform grade <br /> so that the endro length of pipe rau 8mdy dlher on a suitable, propedy compacted native <br /> I materlel or foundadon material. Place bac�ll material eround the pipe u apedficd(or bedding <br /> fill. <br /> 3.05 PREPARATION FOR FILL PLACEMENT <br /> IThe Convactor shall, betore pladng fill materida, prcpare the toundatlon by dearing all eadsdng <br /> obswcdons,vegetadon,end debris ln axordana Mith Sectlon 02102. Untuitable matedel not meedng <br /> ( the rcquircmena for till meterisis shall be rcmoved�here direeted end rcpleced with material meering <br /> the spedfic fill criteria. The edsdng aurfaca ahell be acari8ed w a depth of 12 incha beforo pladng <br /> the fili and moisture conditloned a wdthin 296 d optlmum mdature aontent and comp�Med W at leut <br /> ( 9596 ot maximum dry de�uiry (ASI'M D1557 or W 9096 in generd fill uen). F.xcept u noted on the <br /> Drawfnga or es reqWred by the Engineer, slaped `round twiaca tteeper than aie verdcal W 4 <br /> horiwntal,on which fill or compacted baddll b W be plked,�hall be etepped in suoh a manner thet <br /> the compacdon equlpment ahall bear on the full depth of the flll layer. <br /> I3.06 GENERAL REQUIREMEN7'S FOR FILLS AND BACKFQ.[.S <br /> I A. Conuactor shall obWn swcturd and generd till matedsia from the requircd excevedon,borrow <br /> areaa,or import. as rcquired. A11 m�te�ivs�dl be free trom wd, roota,bnuh,debria, vuh or <br /> other obJecdonable matedd,wlth ra aone af�rater dimerolon than 3l4 of the Isyer thidmess <br /> or av apedtied by msterial rype. Frozm matedda shW not be used u flll or beddill. <br /> I <br /> ( BDBP <br /> 090190 <br />