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LSI Adap1 <br />Equipmenl Iluildi�ig nr CnLir�cl Fnmidnlia+ <br />It is our understanJing Utat �hc foundmion fa'the proposed cquipmcnt building a c�b�ae�s will consis� of <br />a pourcd in placc concrcic slab-omgradc �eith thickcned edges. \Vc anticipalc thal Ihe pad bearing <br />pressurc �� ill bc rcl•r.ti��cly light. I lo���cacr, wc rccommend diat thc thickcncd slnb cdgcs bc dcsigncd as <br />sprcad loo�ings. "I'hc 1'ollowin� rccommcndations �md commcn�s �irc providcd for pwposcs of fooiing <br />design 8Il(I CDIISULCIII t1: <br />Si�t�tiradr Coudiliuns: Tl�e prupused equipntenl pad may be suppurlect by lhickencd slab edges exlendcJ <br />iu bcnr on �lic cxisiing sitc soils cncuumcrcd ai dcpUis bclow 1.5 fccl al :lie lucntion of boring I3-I, aftcr <br />Ihey ha��c becn cutnpacicd in place residting iu a linn �md unyiclding subgra Je condilion, or upon <br />suucluril till placed :ibovc similarly prcparcd soils. Wc nnticipatc Ihc s��� � il cncountcrcd a� 1hc <br />p�oposed I'ound;uiw� grade u-ill likely cousist of ��eq� bosc medium to ��rse sand o�ilh gravel. <br />i)cpcnding on Ihc timc of ycor iBnt l'00511'UCIIOII �)1'OCCC(IS� it mny bc difficult lo compnct Ihusc soils in <br />p];�cc. II �aill bc diP(icuh to achicvc a spccilicd compaction should muislure conicnts signilicanlly .�bove <br />tl�c optim�l mois�urc conditiun bc cncnuntcrcd. Somc ovcroscavation mxy hc ncccssary if c�ccssivcly <br />soft or u�et subgraJe conditions were to '�e encountered at ihe founda�ion design grade Ievcls. In <br />considerntion of Ihe light londs imposecl by the equipment, �vc reconunend the overexca��ntion esicnd no <br />dccper thim 2-(eet belo��• lhe Ihickened slab bearing elevnlion. A layer uC geolexlile may bc required to <br />scpmalc Ilic s�ructw:ll fill soils from ihc undcrlying subgradc malcrials. <br />1'ootings shuulci ne��er l�e c�isl .uop ,oft, laose, oreanic, or frozen soils; IIOf 810�1 5��7�f:IlICS COVCI'C(I V), <br />smnding water. A representati��e 6nm Adapt sliould be rewined Io obse�ve Ilic condiiinn o( foeling <br />subgrades before concreie is pourcd to verify th;n tiiey ha��c be_n adequalely prep:ued. <br />Pootin� Dimcnsions: \1�e rcconmicud Iliai Ihc IhickcncJ ccigc of thc slub bc dcsigncd as a sprc;id footing <br />and hc constructed to huvc a minimum �vidih ol' 12-inchcx. For frosl proimiion, ihc iootings shoidd <br />pcnetrate at Icast 18-inches beloe� lhe lo���est adjacenl exterior gradcs. Poolings may also bc supporled on <br />suiichual ful placcd on ;i prcparcd soil suhgradc. Thc ;�orizontal limits of the fill pnd helo��� �he huildinr <br />or cabincl fouuelatimt roay bc establishcd by c�lcnding a line uul�vard from lhc bnse uf Ihe lhickened slab <br />al an anglc ol' I Horizontal: I Vcrlical (1 H: ' V) do���n to Ihc �ipper sw'facc uf Ihc hcaring horiznn. <br />Rearii�Pressurc: A1 the locatinn of horing 11-I, thc ne.ir surlici�il soil should bc siripped, excavaled to a <br />depth of a� Ic�sl IS-inches Uclo��� Ihc lowesl adjacenl g�:�dc. "1'hc soils al thal clevatiou should bc <br />couipncicd in placc if thc moisturc contcnt nllo�vs, resulting iu a firm nnd unyiclding subgrndc conditiun. <br />Altcmativcly, Ihc cabincis cuuld bc supporlcd :ibu�•c a macimmn thickncss ol't�vo fcct of compactcd fill, <br />underlain hy a layer of geatcalile (filler fahric), II il'(�lpl'C(�. A 111�XI011i111 :IIIOl1':Ihll' tiOII Ill'�I'IOb �)fl•SSUI'C <br />of I�OD pounds per-squarrfoot can bc uscd for slatic foo�ing IO�(i5. TI115 hearino presswe can be <br />increased by one-ihir<I to acconunodate transicut �vind or seismic loads. An allo��-able basc Giction <br />coefficienl of OA2 and an allmeablc passive carth pressurc of 300 pounds per cuhic fool (pc�, cx�resscd <br />��enzan \\'�nless AuEV51 J.?OOt <br />Adapi Projr:l No. \1'AOJ.777? PnFe 5 �y , <br />�11 <br />