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Au�,::� IR.2004 <br />Mr. Jim �fhomas <br />13clvcdcre Lots 32 �ind )1 <br />L&A Juh No 4A088 <br />Pa6c 12 <br />If �he above recommend.itions are follow�d, our recommendcd design crileria �i�r footing <br />lirundations arc a, fullo�v,;: <br />• fhc allowablc suil hcaring pressurc lix footing li>undatiuns, including dcad and li�c <br />loads, should be no E:rcater Ihan 2,500 psC The footing bcaring soils should be verificd <br />on-site hy a geotcchnical engineer a�ter the footing lrenches are excavated and beforc thc <br />(uotings pow'ed. <br />•"I'he minimwn depth to bottom ol perimcler footings below adjacent final exterior gradc <br />should bc no Iess Ihan I R inches. The minimum Jepth to bottom of the inicrior Cootings <br />bclo�v �up ul Iluor slab shoulJ bc no Icss ihan 12 inchcs. � <br />•"1'he minimum width should be no Iess than 16 inches for continuous footings, and no less <br />�han 24 inchcs tor individwi! footin�s. <br />A ouc-third incrcase in thc :ihovc recommcndcd allowabic snil hearing pressure may be uscd <br />whcn cons�dcring sliur�-Icnn, transitury, N'lI1cJ Of $l'ISI111C IOJ(�S. I'Of �OOlillb' IOUI1d8U0115 lIl'Slb'I1C(I <br />and constructed per rcconunendations above, we estimate that die maximum lotal post- <br />construction sclllcinent of Ihc huildings should be 3/4 inch or less and the diflcrenlial seplement <br />.�cross buil�ing ��-idih shuuld hc U2 inch or icss. <br />lalcral loads on huildin�s can hc rr.;islcd hy Ihc Iriclion �i�rce bctwccn thc fi�undations and lhc <br />subgrade soils or thc rassivic enrth pressure acting o� Ihe bclow-grade portion of Ihe louitdations. <br />Por thc laticr, Ihc fuunda�ions must lx pourcd "ncaC' against undisturbcd soils ur backfillcd with <br />a clean, frec-draining, com��acted struclural fill. We recommend that an equivalent Iluid density <br />(I;I'U) of 300 pcf (pounds per cubic fool) fc�r the passive earth pressurc bc used lor lateral <br />resistancc. l'bc ahovc passivc pressurc assuntcs thal thc backlill is lev�l or inclim•s upward away <br />from thc fuundaliui�s fi�r a horizo�ilai distancc at Icast t�vicc lhc dcpth of thc foundati�ns bclow <br />th�� linai gridc. A cocl�lieicnt ol I�riclion of O.GO bctwecn Ihc foundalions and �hc subgradc soils <br />��iu s� n::sociAT�rs, iNc. <br />�� �I �`�� <br />