3210 36TH PL NE 2018-01-02 MF Import

i � APPENDIX B LABORATORY TESTING GENERAL Soil samples oUtained fcom the explorations were transported to our laboratory and examined to conlirni or modify field classifications, as well as to evaluate engineenng properties of the soil samples. Representative samples were selected for laboratory tcsting consisting of moiswre coi�cent deterniinatian, dry density deterniination, percent tines content, Atterberg limit tests, and consolidation tests. The tests- were performed in general accordance with test methe�s of the American Society for Tcsting and btatcnals (ASTbt) or othcr applicablc procedures. The results of the labor;rtory tcsts arc presented in Pigun s B-I dirough 13-3. Thc results of the moisturc conten[ and dry density determinatiom .uc prescnted on dic exploration logs at [hc re�pectiee sample dcpthsin Appendix A. SOIL CLASSIFICATIONS All soil samplcs obtaincd Gom lhc c�ploratiuns �vcrc ��isually classiti�d in Ihe fi�W aniJ or in our iaboratory using a systcm based on the Unitied Soil Classiticatiun System (USCS) and AS7N1 classitication methods. AS"CM te_,t mcthod D 2458 was used ta visually classify the soil samples, while ASTM D 2457 was used to cla� the soils based on laboratory tests results. These classitication procedures arc incorporated in the�.,ploration logs shown in Pigures A-2 through A-S in Appendix A. MOISTURE CONTENT TESTING Moisture contents tcsts were completed in general accordance with ASTM D 2216 For representa[i�e samplcs obtained ('rom thc explorations. The results of these tests are presented on the cxploration logs in Appendix A at the depths at�vhich thc samples �cere obtained. ATTERBERG LIMITS TESTING � e � ' it tin� was erformed an selected fine-�rained soil sam les. 'Che tests were used to Att�rb rs lim s [cs b p 6 P classify the suil as �vell as to evaluate indes properties. The liyuid limi[ auS the plastic limit wcrc estimated through a procedure perfomied in general aaord:mcc «ith :\S"I�A1 D •1315. 'Che re;ults a(th� AtterUerg limits tcsting are summarized in Pigure E3-l. PERCENT PASSIIvG U.S. NO. 200 SIEVE Selected samplcs �ecrc "washed" dirouSh the No. 200 mcsh sicvc to detcrmine the rclative percentages oi coarse and fine-grained partides in the soiL The percen[ passing ��alue represents the percentage L-y weight of the samplc finer than the U.S. No. 200 sieve. Thesc tests were conducted to verify ficid descriptions and to dcterminc the fines content for analysis purposes. The tests were conducted in gencral accordance �vith ASTM D 11�10, �nd dic results are sho�vn on the explora[ion logs at the nspecti�'e sample depth. CONSOLIDATION TESTS One-dimensional consolid;ition test; ��rre conducted or. h�o nlati��ly undisturbed soil sampics. "Che consulidation tcsting was conductcd in generaf accordance ��ith AS'Ctvf D 243�, using a fixed-ring consolidometer. The results of the consolidation tests are presented in Fi�ures B-2 and B-3. The coefficicnt of consolidatior„ c,., camputed for sclected load increments from the consolidation tests ranged from C30 to 0.-12 It'%day. The moditicd compression index, C,�, ranged from 0.11 to 0.36 dzpending on depth Uelo�v Sruund surl'�ce and organic content. ��r�•,�s, ,+��,s�-aur-uu PageB-1 GeoENcir+eeas� O�rabc�, 1/.?006 .---_—__.'... __,_,__,._"'^ ' ._ . _—._ . . . ___'__ _'--�..�...en..-.�.. .: ._-c-_...'.__"wrrYe.w _.