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� ZZA Proposed Inunanuel Lutheran Church Additlon <br /> � �'„�►���s��e ]-1788-3 <br /> �a��i�� FebN�ry 23, 2005 <br /> �=�_ Page 9 <br /> � Lateral Resistance: Laternl loads applied to die footings could be resisted by a combination of <br /> passive resistance and frictional sliding resistance. We reccmmend tliat an allowable passive <br /> � equivalent fluid unit weight equal to 32� pounds per cubic foot (pc� be used for p�ssive <br /> resistance of footing:<. An allowable coefficient of icictiou equal to 035 could also be used <br /> along die basc of thc foundatiou. Frictional resistance is contputed by multiplying thc <br /> � resultant vertical foimdalion load by the ti�ictional cocfficienL A factor oF safety ec�ual to at <br /> least I.5 has been incorporated into thcse allowable values. <br /> � SetUement Assuming the foundation clemcnts are desi�}ied in accordance �vith <br /> recommeudations contained hercin and are founded on those soils described in the 13em�ing <br /> /'r•essures section of this rcport, ���c estimate that total settlements should bc less than 1-inch <br /> � with differential scttlemcnts on tha ordcr of '/r-inch or Icss, over a distance of 40 fect. The <br /> m�jority of the setdement will most likcly occur elastically during the initial loading of tiie <br /> foundation; howcver, if any dishn�bed, loose, yielding, or soft soils are 1cR within the footing <br /> ; area prior to concrete placement, sctNements greater than predicted hercin may be realized. <br /> �ontint� Sub�raJe Inspcction: Thc condition of thc footing suUgadc soils should bc <br /> evaluated Uy a representati��c o}�Zipper Zeman Associates, Ine., prior to concrete pl.cement, <br /> to confinn that the conditiou of the Ucaring soils are consistcnt widi those ass,;mcd during <br /> design, and that all loose matcrials are removed. <br /> 6.4 Intcrior Slab-on-Crade Tloors <br /> ; We ofl'cr thc f'ollo�ving tloor slah recommendations and comments for pur��oses of interior <br /> slab-on-gradc floor design and construction: <br /> � Sub�radc 1'rJ�aratiun: Thc subgradc tor Ihc slab-on-gradc tloors ,hould Uc preparcd in <br /> accordanee �vith the Srte Prepnrution and Sn•uchn•n(Fi(!nnd Compnclian G•i�erin sections of <br /> lltis rcport. <br /> ' � Canillarv F3renk: V1'c rccommcnd that thc floor slab be undcrlain by at Icast 6 inches ofcican. <br /> �vcll-gradeJ sand and gravcl containing less than threc perccnt passing a U.S. No. 200 siccr <br /> 1 to function as a c.�pillary break. Aggregate such as Gravcl f3ackfill for Drains (WSUOI Sid. <br /> Spec. )-03.12(4)) is recommendcd as a suitable capi!lary break material. <br /> � Vanor [3arrier. An impen�ious vapo-barrier, sucli as Visqueen, is recommended bet��crn th� <br /> � capilla�y break and thc slab. Wc rccommend the use of a punciure-resistant, 6-mil or thickcr <br /> � vapor barricr fiir usc directly undcr the slaU. Thc edges of the ��apor Uarricr sl�ould overlap al <br /> least 12 inches and be sealed �vith tapc or in accordance with the manufacturer�s <br /> recommcndations. 'I'he moisture protection details should bc reviewed by the urchitect and <br /> � owner and additiunal, more stringcnt mcasures speciticd if nccessmy, to protect interior floor <br /> tinishcs. <br /> , <br /> I <br /> �� 1-zM�.o»:u> <br />