EVALUASI KARAKTERISTIK TANAH YANG BERPOTENSI LIKUEFAKSI PADA LOKASI JALAN MERPATI SEGMEN UTARA KELURAHAN TANAMODINDI DENGAN SWEDISH WEIGHT SOUNDING TEST

ABSTRACT
On September 28, 2018, an earthquake with a magnitude of 7.4 occurred in the Central
Sulawesi region. This earthquake not only triggered a tsunami but also a liquefaction phenomenon
that occurred in land areas in Palu City and Sigi Regency. This liquefaction phenomenon causes
some damages to buildings and road infrastructures and also causes huge casualties. Based on the
potential liquefaction zone map, Tanamodindi Village itself is included in the potential
liquefaction zone category. So that, the author wants to know the potential for liquefaction in
Tanamodindi Village, especially around the Jalan Merpati North Segment area. This research was
carried out using the Swedish Weight Sounding test, analysis of liquefaction potential based on the
Tsuchida (Gradation) method, Modifield Chinese Criteria method, Atterberg data and CRR and
CSR analysis based on N-SPT data converted from Nsw. The results of Swedish Weight Sounding
with depth produce the main parameters, namely Nsw, qa and qu values. The Nsw value ranges
from 0.00 - 375.00 n/m, the qa value ranges from 0.00 - 330.00 KN/m2 and the qu value ranges
from 30.00 - 255.00 KN/m2. Meanwhile, from the results of laboratory tests, soil classification
was obtained from 10 sample points, namely SC, ML and Cl soil types. According to Tsuchida, all
soil gradations from the 10 test points have the potential for liquefaction. According to the
Modifield Chinese Criteria, some have the potential for liquefaction and others have great
potential and according to the Fs value, which was analyzed from Nsw data, at the Swedish
Weight Sounding test points at P1, P4, P6, P7, P8 and P9 the potential for liquefaction to occur at
varying depths.
Key words: Merpati Street, Tanamodindi, SWS, Potential, Liquefaction