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03/08/2007 10:43 7632635912 ADVANCE WALL SYSTEMS PAGE 02/02 <br /> I <br /> • i <br /> probe placed to a depth of 3 feet at th ti c I iner indicated cohesive <br /> soils at depth, with a rapid recovery i 1 strength beyone 70 to 12 <br /> inches. Based on soil observations of Milleted sections , we <br /> would anticipate acceptable soils as the t ind north footing lines <br /> are complo l in the northwest . <br /> To evaluate the relative loadbearing cap itj f the subqrade soils, 2 <br /> dynamic cone penetrometer tests were con at the base o the <br /> footing trenches. The dynamic cone pens o t r (DCP) , employs a <br /> eight kilogram (17. 6 pound) hammer to dr e 0 millimeter diameter <br /> conical point into the soil , with the pe t t n recorded i <br /> millimeters per blow. From the DCP read g per blow, penetration <br /> average was recorded and a N-value deriv TAS N-value, is an <br /> empirical relationship we have establishequate the dynamic cone <br /> data to the more familiar blows per foot ) tandard panet ation <br /> soil boring test . <br /> Test #1 - NE Corner (Lower c on) <br /> DCP DeAth Rer Blow Avg. N-V' lui Estimated LDad <br /> 231 MM (9. 111) 14 . 4 MM / N-21 ; Exceeds 4000 P3F <br /> Test #2 - SW corner (sub-cut fI <br /> g is Removal ) <br /> DCX 12ailth Per. R1 nw v N-v ' im t <br /> I <br /> 593 MM (22. 2") 22 . 2 MM / N-7 . I 2750 PSF <br /> Tt is our understanding that the garage i113dP a two le el <br /> design utilizing pre-cast panels and a pt oor topping, ith <br /> footings configured at 30". In our opin' IIt observed and tested <br /> subgrade soils are acceptable, and would bx eted to meet r exceed <br /> the minimum bearing capacity requirement . t0 PSF for the roposed <br /> construction. <br /> It <br /> Our observations and subsequent soil eva o on this date sfoollimited in scope to soil conditiono oboe w hin the foog <br /> excavation, and to the depths achieved b H &w probes and ynamic <br /> cone penetrometer tests. We therefore, �t le to assess ubgrade <br /> soils at depths which may be encountered o ings conducted as part <br /> of a standard subsurface geotechnical in q tion. <br /> Sincerely, <br /> Instant Testing Company By: <br /> Gary S andish >�t F. Sullentrop, P.E. <br /> Senior Inspector �s a Reg.# 17823 <br /> #701 -1 / #605 - 2 1/2/ #608 - 1/4 / #3 DCP / #612 - 4 <br /> ADVANCE4.DOC <br /> I <br /> I ; <br /> i � <br />