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All Journal Jurnal Ilmu Produksi dan Teknologi Hasil Peternakan Jurnal Review Pendidikan dan Pengajaran (JRPP) REKONSTRUKSI TADULAKO: Civil Engineering Journal on Research and Development Jurnal Pengabdian Masyarakat dan Penelitian Thawalib Journal of Language Development and Linguistics Indonesian Research Journal on Education
Rizal, A.
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Journal : REKONSTRUKSI TADULAKO: Civil Engineering Journal on Research and Development

 1 
Estimasi Biaya Konstruksi Pada Perumahan Tipe 45 di Sulawesi Tengah Menggunakan Regresi Kuadratik Rizal, A.; Fajri, M.; Yuniar, L.S.
REKONSTRUKSI TADULAKO: Civil Engineering Journal on Research and Development Vol. 1 Issue 2 (September 2020)
Publisher : Civil Engineering Department, Tadulako University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22487/renstra.v1i2.27

Abstract

his research is based on the background of the problem that cost estimation is very beneficial for the owner, contractor and consultant. Errors in estimating costs are very often done, this is due to lack of experience and information obtained by an estimator. The purpose of this study is to obtain an equation that can help an estimator in estimating costs whose results approach the actual cost and can speed up the estimation process. The data that used in this research is from RAB’s 45 type house in Central Sulawesi. The method that will be used in this research is Pearson Correlation and Quadratic Regression. Pearson correlation is used to see the correlation between the independent and dependent variables while the Quadratic Regression is used to get the equation between the independent variable and the dependent variable. Regression modeling results obtained are y=-649,15X1+0,0022X1^2+182X3-0.0005X3^2+e, with R2 = 95%. The variables that significant in this research are raw material ( X1) and concrete brick ( X3)
Analisis Potensi Likuefaksi Dengan Alat Swedish Weight Sounding di Desa Tompe Kecamatan Sirenja Kabupaten Donggala Setiawan, H.; Sutrisno, M.; Hasanah, Y.; Rizal, A.; Kurniawan, A.; Qhalbi, A.N.; Gayatri, S.
REKONSTRUKSI TADULAKO: Civil Engineering Journal on Research and Development Vol. 6 Issue 1 (March 2025)
Publisher : Civil Engineering Department, Tadulako University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22487/renstra.v6i1.693

Abstract

In 2018 in Indonesia there has been an earthquake of 7.4 on the richter scale. The epicenter was on land around Sirenja district, Donggala regency, Central Sulawesi. The impact in some areas there is liquefaction of these areas, namely Petobo village and Balaroa village and also subsidence in Tompe Village this study aims to determine whether the soil in segment II of Tompe village has the potential for liquefaction based on the results of Cyclic Stress Ratio (CSR) & Cyclic Resistance Ratio (CRR) analysis and based on the results of Tsuchida grain distribution graph. Samples in this study amounted to 10 points by field testing using Swedish weight sounding tool to obtain the value of Nsw (n/m) correlated to the N-SPT data and analyzed by the CSR & CRR equation to obtain the value of the safety factor (FS). The results obtained with the range of FS values are for the potential 0.13 – 0.98 and not potential 1.06 – 1.72 and based on the results of grading the grain to get the value for the potential 70.31% - 95.87% and not the potential 0.39% - 6.62%  from the results of the 2 methods it is concluded that Tompe village based on the value of  FS 50% has the potential for liquefaction and based on the Tsuchida graph 85.78% has the potential for liquefaction.
Co-Authors A. Kurniawan Alim, Abd. Ashaf, Devy Purnama Bashori, Abdul Hamid Burhan Burhan, Burhan Fitrah, Muhammad Alfachriza H. Nuraini H. Setiawan Hamid, Sundari Hasanah, Y. Holis, Holis Irwandi, Andi Latif, Nur Fadhillah M. Fajri, M. Moh. Rizal, Moh. Muhammad, Achmad Fajar Mustabil, Sulhijrah Nasri, Sitti Hafiyah Nurwidyayanti Nurwidyayanti Qhalbi, A.N. R. Priyanto Risma Risma, Risma Rofiqi, Rofiqi Rosmawati Rosmawati S. Gayatri Sinar, Sinar Sinring, Abdullah Sutrisno, M. YANTO YANTO Yuniar, L.S.