Laserfiche WebLink
( <br /> , <br /> � �.���tinu ���ac,uions tu prut�ct thc ���otin_ :uL��r:i�1c soils li�om �catu and��,r v.ct ��cathrr .lurin� <br /> rcinforccmcnt bar placenunt and preparutiun lix conuete placement. �1'c recommend thc!t the conJiti,�n <br /> � oF all (i>otinc esc:n�:uiun, be observed b�' a represenlatice from our tirm priur to placement of conereie t�� <br /> eon(inn thai thc he;irin�� s��il; ;ire un�li,iurhe�l und arr a�nsuitnt �ci�h our rccommendation; a�nt:iinc�l in <br /> this r:r,oit. <br /> i <br /> ( SLAB-ON-GRADE <br /> ISubgrade Pieparation <br /> The espuscd subgrade shoul� bc cvtiluutcd allcr sitc �srading is complcta Proot-rolling ���ith hcac�. <br /> � rubbcr-tired construction equipment shuuld be used for this purpose durim� dry weather and if:icce�s f�,r <br /> I this cyuipment is practical. Probing should be uscd to evaluate the subgride durir.�s periods of �cct <br /> ��cathcr ar if acccss is not f�asiblc tbr construction cquipmcnt. TLc c�po;ed soil should bc firm and <br /> � unyiclding, and without significant groundw�tcr. Ui;turbcd arcn, ;h�,ui�l b� rc-�ump:ictcd if p���sibic or <br /> rcmavcd and replaccd �vith cumpacled strucuiral lill. <br /> 1 Design Parameters <br /> Conventiunal sl:ibs m:q� be supported on-grxde procidin,� thc �ubgr:idc suils arc pr�parcd a; <br /> rccummcndcd under thc 'Suber,idc Preparation' above. \Ve recummcnd th�t the �leb be tbunde�l on <br /> i cithcr undisturbcd �sl:�cially consolidated soils or on structural fill placcJ u�cr thc undisuirbcd ��laci;ill_, <br /> cunsolid;ucd soils. Fur slahs desiened as a bcam on an clastic fuundatiun. a modulus uf sub��radc rcaetien <br /> u� 1�0 pci ma}' be used for adequatrlr prepured subgrade soils. AVe recommcnd slabs-on-�.r:idc bc <br /> � supportcd on e minimum G-inch-thick laycr uf l'/_-inch mii us clenn crushcd gravcl ���ith ncelieiblc sand <br /> or silt, tu pro�idc unifonn support and �i�nn a capillan break bencath the slab. If moisture-scnsiti�c floor <br /> caverings will be u,cd. ���c :ilso rccummend u c;ipur bnn�icr with bunded srums (minimum thicknes; of <br /> � 10 milj. <br /> Below Slab Drainage <br /> � Wc cxpect thc st.uic �round�v;ncr la��rl to bc loc;ucd bclo�v thc slab-on-eradc Icvcl for thc propo,ed <br /> buildings: hu��c�cr. perched ground�vatcr �vill be prcscnt abo�c the slab sub�,rade elevation. It may bc <br /> � ,�ppropriate to inst:�ll an underslab drainage svs[em to renwve �+ater from below the slab-on-grade. Thc <br /> I ;ail �.init .0 thc sLib cl��-atiun con�ists of glaciall� cunsolidakJ suils with v�riablc silt contcnt. In thcse <br /> soils, perdicd eround�vatcr sccpage cuuld be �ncountercd. Ne recommend dmt a contingency be <br /> � included in the bud,et fin a (ull undcrslab drain;i_e system. <br /> If neuded. ��c recummend that the underslab drainaee system include an interior perimeter drain anJ on� <br /> loneitudinal drain f�r each <:ructurc. The drains should cunsist ul n minimum 6-inch-diameter perfurated <br /> JSehcdulr -10 PVC pipcs placed in a trench at least 12-inches decp. �fhe top of thc underslab drainaea <br /> � ���stcm trcnchcs should cuincide with thc base of die capill�iy break layee The underslab drainage <br /> ;���tem pipes should hace udcqu:uc slope tu alluw posi[ive drain:r�� [o die sump/eravi[v drt�in. <br /> �, l he draina�_e pipc ihoulJ be cith�r m:ichine slotted ur peribrat�d. llie slo[s should be a m:ieimum of <br /> 1,3-inch ��ide with -I sluts per inch and e�tcnd the lo�ver (i0-de�_rec perimeter of the pipe. Pertbrated pipc <br /> shuulJ huce hvu ro��'s uf I/3-inch holes spaced 130 d�grees aptirt :�nd at -1 inches un-centec The <br /> � underslab draina�c syst�m u�enches should be b�icktilled �vid� pea gra��el, or 1VSDOT Specification <br /> '>-03.13��1). Gra��el 13acktill for Dr.iins. or ulternative approced b)' GeoGneineers. Th� unJerslttb drainage <br /> ,��siem pipes should be connected tu a headcr pipe and routed to a sump or eravity drain. .Appropriate <br /> � , �.� �.,. !n--J�_arl) .'U <br /> (������ fQ GEOENGINEEH� <br /> n„ anG <br />