caa a22 4500 467931224 CHVBK 20180406152944.0 cr unu---uuuuu 170328e20061001xx s 000 0 eng 10.1007/s10706-005-1560-9 doi (NATIONALLICENCE)springer-10.1007/s10706-005-1560-9 Nicholson Peter Associate Professor, and Graduate Chair, Department of Civil and Environmental Engineering, University of Hawaii at Manoa, 2540 Dole Street, Honolulu, Hawaii aut Liquefaction evaluation discrepancies in tropical lagoonal soils [Elektronische Daten] [Peter Nicholson] Field penetration tests and shear wave velocity measurements are both established and accepted methods for evaluating liquefaction potential in soils. The results produced by the two methods are generally well correlated. However, recent studies have shown that when investigating tropical lagoonal deposits, the same accepted methods for evaluating liquefaction potential often produce significant discrepancies in results. This discrepancy is most apparent in saturated lagoonal deposits of calcareous gravelly sand (or sandy gravel), which tend to exhibit low penetration resistance values but relatively high shear wave velocities. These disparate test results can suggest different soil classifications under current building codes. Ambiguity in the code may allow for a potentially unconservative classification, which may in turn allow for the use and construction of less costly, lighter weight foundation systems than warranted. Equally as important, the potential for unconservative design as related to liquefaction appears to be high when shear wave velocity measurements are used as a basis for evaluation in these types of lagoonal deposits. Because of this, it is strongly recommended that caution should be excercised when determining seismic design parameters in these types of geologic environments. A hypothesis to explain the discrepancies in the results of evaluation methods and a suggested design protocol is proposed. Springer, 2006 building codes nationallicence calcareous soils nationallicence liquefaction nationallicence penetration tests nationallicence shear wave velocity nationallicence Geotechnical & Geological Engineering Kluwer Academic Publishers 24/5(2006-10-01), 1259-1269 0960-3182 24:5<1259 2006 24 10706 https://doi.org/10.1007/s10706-005-1560-9 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10706-005-1560-9 text/html Onlinezugriff via DOI NATIONALLICENCE 100 1- Nicholson Peter Associate Professor, and Graduate Chair, Department of Civil and Environmental Engineering, University of Hawaii at Manoa, 2540 Dole Street, Honolulu, Hawaii aut NATIONALLICENCE 773 0- Geotechnical & Geological Engineering Kluwer Academic Publishers 24/5(2006-10-01), 1259-1269 0960-3182 24:5<1259 2006 24 10706 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer