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TABLE A <br />SUMMARY OF SWELL TEST RESULTS <br />vt~.ze.St '~"'^t_iW~."_ F <br />;sF ' <br />"` .J4?~. -?v:~,-'~~~ <br />' Yt ' A fi" ~ .'~ .G.'~ i~'.4.n. 7a <br />; <br />~ r'° <br />` R <br />f <br />11 <br />~ <br />~ <br />~,~ - <br />^5 <br />' <br />~' Compression ~ ~ . <br />ange o <br />Swe <br />1(.%) <br />~y~ <br />. <br />_ <br />m= <br />~ <br />~ <br />~ ~~. .~ -'~-a3. S <br />-:i. - ~-i~.: a. <br />_ yt` .~ <br />v.#i af.r ~s'~ra <br />~ <br />~y r ro <br />~~ W.4 {- / <br />~',~y.{ i.~~t`P~Y per`. ~p <br />:d - rCS.-.r.v e <br />p[ _ <br />-~+ F' ~ ~`C~' ~4 i~~y Y'YYV[°~ J:Y...~~-. <br />rSoil Type ~ <br />~ <br />'' ~ tow +~Moderate~ ~3tg`hr,~~, i r fiery Htg <br />h"- <br />4 +~~ ~ ~~ <br /><0 <br />~~ ~ 0 [o <2 , <br />k " 2 to <4 4 to <6 e~~-;~,>6 <br /> <br /> ~ ~ <br />° <br />"~ _ - <br /> ~ Number of Samples and Percent-: ~.a- <br />~ <br /> <br />Sandy Clay 0 0 1 0 0 <br />Bedrock 0 0 2 2 1 <br />Total 0 0 3 2 1 <br />Percent 0 0 50 33 17 <br />Groundwater seepage was only encountered in one test hole at the time of drilling. Groundwater seepage <br />was encountered in test hole 3 at a depth of 12 feet beneath the existing ground surface at the time of <br />drilling. V/tten measured 7 days after the drilling was completed, groundwater levels were encountered in <br />all of the test holes with the exception of test hole 2. The groundwater levels were encountered at depths <br />ranging from 1 to 16 feet below the existing ground surface. I[ should be noted that groundwater <br />conditions can be expected to fluctuate with changes in precipitation and runoff at the site. <br />Foundation Recommendations <br />Based on the subsurface conditions encountered in the test holes, the results of the field and laboratory <br />investigations and the proposed construction, we recommend that the proposed building structures be <br />founded on sVaight-shaft drilled piers advanced into the underlying undisturbed clays[one-shale bedrock <br />materials. <br />Shallow foundations placed on swelling clays and/or bedrock materials can experience significant <br />structural deformation if the materials are subjected to significant moisture changes. The drilled pier <br />foundation system will place the bottom of the piers in a zone of relatively stable moisture content and <br />make it possible to load the piers sufficiently to resist the uplift movements of the clays and bedrock <br />materials. The drilled "piers advanced into competent the competent bedrock materials will also offer [he <br />advantage of providing a uniform and high supporting capacity for the sttuctures. Due to the relatively <br />Job Number: 07-7442 NWCC, Inc. Page 4 <br />