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All Journal Teknik Sipil dan Arsitektur Journal of Engineering and Technological Sciences FROPIL (Forum Profesional Teknik Sipil) JURNAL KAJIAN TEKNIK SIPIL Borneo Engineering: Jurnal Teknik Sipil Menara: Jurnal Teknik Sipil G-Tech : Jurnal Teknologi Terapan Jurnal Teknik Sipil dan Arsitektur Nusantara Hasana Journal STATIKA: Jurnal Teknik Sipil Jurnal Pengabdian Masyarakat Bhinneka Jurnal Pengabdian Masyarakat Bangsa Jurnal Teknik Sipil Media Konstruksi : Jurnal Ilmiah Teknik Sipil
Sitepu, Arif Rahman Hakim
Program Studi Teknik Sipil, Fakultas Teknologi Infrastruktur Dan Kewilayahan, Institut Teknologi Sumatera, Lampung Selatan
Agriculture, Biological Sciences & Forestry Arts Humanities Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Energy Engineering Health Professions Industrial & Manufacturing Engineering Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mathematics Medicine & Pharmacology Nursing Physics Public Health Social Sciences Transportation

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ANALISIS PENGARUH PEMASANGAN CONTROLLED MODULUS COLUMN (CMC) PADA DAYA DUKUNG DAN PENURUNAN TANAH LUNAK Julita Hayati; Alfredo, Alexander; Sitepu, Arif Rahman Hakim; Syuhada, Syahidus
Jurnal Teknik Sipil dan Arsitektur Vol 31 No 1 (2026): Jurnal Teknik Sipil dan Arsitektur
Publisher : Fakultas Teknik Universitas Tunas Pembangunan Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36728/jtsa.v31i1.5773

Abstract

The construction of a structure on soft soil has the potential for structural failure. This phenomenon occurs because the low bearing capacity of soft soil is accompanied by high compressibility, resulting in large settlements and low stability. This problem needs to be solved by soil improvement. In the Indrapura–Kisaran STA 112 + 500 Toll Road Construction Project, soil will be filled more than the ground's bearing capacity. Therefore, a soil improvement method using a Controlled Modulus Column (CMC) is necessary. The analysis method used in this study uses analytical methods and the finite element method (FEM). The analysis was performed by comparing the bearing capacity and settlement in conditions without improvement (preloading) and with improvement using CMC. The installation of CMC with a spacing of 1 meter, a diameter of 0.42 meters, an LTP thickness of 1 meter, and a concrete quality of 16.41 MPa showed an increase in soil bearing capacity of 30%. The rise in ground bearing capacity also affected soil compressibility, resulting in a reduction of up to 68% in soil settlement. Therefore, installing CMC on soft soil effectively increases bearing capacity and reduces settlement. Ground stability is improved, with the safety factor rising to 2.11. Keyword: bearing capacity, Controlled Modulus Column (CMC), settlement, soft soil, soil improvement
ANALISIS PENGARUH PEMASANGAN CONTROLLED MODULUS COLUMN (CMC) PADA DAYA DUKUNG DAN PENURUNAN TANAH LUNAK Julita Hayati; Alfredo, Alexander; Sitepu, Arif Rahman Hakim; Syuhada, Syahidus
Jurnal Teknik Sipil dan Arsitektur Vol 31 No 1 (2026): Jurnal Teknik Sipil dan Arsitektur
Publisher : Fakultas Teknik Universitas Tunas Pembangunan Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36728/jtsa.v31i1.5773

Abstract

The construction of a structure on soft soil has the potential for structural failure. This phenomenon occurs because the low bearing capacity of soft soil is accompanied by high compressibility, resulting in large settlements and low stability. This problem needs to be solved by soil improvement. In the Indrapura–Kisaran STA 112 + 500 Toll Road Construction Project, soil will be filled more than the ground's bearing capacity. Therefore, a soil improvement method using a Controlled Modulus Column (CMC) is necessary. The analysis method used in this study uses analytical methods and the finite element method (FEM). The analysis was performed by comparing the bearing capacity and settlement in conditions without improvement (preloading) and with improvement using CMC. The installation of CMC with a spacing of 1 meter, a diameter of 0.42 meters, an LTP thickness of 1 meter, and a concrete quality of 16.41 MPa showed an increase in soil bearing capacity of 30%. The rise in ground bearing capacity also affected soil compressibility, resulting in a reduction of up to 68% in soil settlement. Therefore, installing CMC on soft soil effectively increases bearing capacity and reduces settlement. Ground stability is improved, with the safety factor rising to 2.11. Keyword: bearing capacity, Controlled Modulus Column (CMC), settlement, soft soil, soil improvement
PREDIKSI NILAI CBR LABORATORIUM BERDASARKAN PARAMETER INDEKS TANAH (ATTERBERG LIMIT, SPESIFIC GRAVITY) DAN DATA PEMADATAN PROCTOR Rahman Hakim Sitepu, Arif; rahma, siti; Tyagita Utami, Erdina; apriwelni, siska; Ayu Dwiyana, Putri
STATIKA: Jurnal Teknik Sipil Vol. 11 No. 2 (2025): STATIKA: JURNAL TEKNIK SIPIL
Publisher : Politeknik Raflesia Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.53494/jts.v11i2.1221

Abstract

Penelitian ini menggunakan metode regresi linier berganda (Multiple Linear Regression Analysis/MLRA) untuk memprediksi nilai California Bearing Ratio (CBR) dalam kondisi tidak jenuh (unsoaked) berdasarkan parameter parameter tanah hasil pengujian laboratorium, yaitu batas Atterberg (LL, PL, PI), berat jenis tanah (Specific Gravity/Gs), serta parameter pemadatan standar Proctor seperti MDD dan OMC. Seluruh pengujian dilakukan sesuai dengan standar ASTM yang berlaku. Hasil analisis regresi linier sederhana (SLRA) menunjukkan bahwa nilai koefisien determinasi (R²) yang diperoleh masih tergolong rendah, masing-masing sebesar 0,2504 untuk LL, 0,6989 untuk PL, 0,2326 untuk PI, 0,0829 untuk Gs, 0,3427 untuk MDD, dan 0,0917 untuk OMC. Nilai-nilai ini mengindikasikan bahwa model SLRA belum mampu menggambarkan hubungan yang kuat antara masing-masing parameter terhadap nilai CBR. Sebaliknya, hasil regresi linier berganda menunjukkan bahwa kombinasi parameter LL, PL, dan MDD menghasilkan R² sebesar 1, yang berarti seluruh variasi nilai CBR unsoaked dapat dijelaskan oleh model dengan sangat baik. Model lainnya, yang menggabungkan PI, Gs, dan OMC, juga menunjukkan hasil yang sama dengan nilai R² sebesar 1. Oleh karena itu, dapat disimpulkan bahwa metode MLRA jauh lebih akurat dan dapat diandalkan untuk memprediksi nilai CBR dibandingkan SLRA, serta berpotensi menghemat waktu dan biaya dalam proses perencanaan dan evaluasi teknis pada proyek infrastruktur jalan.
Bantuan Teknis Desain Konstruksi Beton Non-Struktural Berbasis Pemanfaatan Limbah Industri Batching Plant dan Asphalt Mixing Plant untuk Mendukung Infrastruktur Berkelanjutan Ribowo, Anggarani Budi; Maini, Miskar; Sihombing, Tera Melya Patrice; Yuliyanto, Andry; Zhafira, Elian; P, Kirtinanda; Novalina, Winny; Rahma, Siti; Marina, Bernaditha Catur; Sitepu, Arif Rahman Hakim; Apriwelni, Siska; Kiranaratri, Ayudia Hardiyani; Sari, Dian Perwita; Utami, Erdina Tyagita; Tambunan, Hermon Frederik
Jurnal Pengabdian Masyarakat Bhinneka Vol. 4 No. 3 (2026): Bulan Februari
Publisher : Bhinneka Publishing

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58266/jpmb.v4i3.1233

Abstract

Industri konstruksi seperti batching plant dan Asphalt Mixing Plant (AMP) menghasilkan limbah berupa sisa beton mengeras, slurry pencucian mixer, agregat terkontaminasi semen, serta residu aspal halus yang berpotensi menimbulkan dampak lingkungan apabila tidak dikelola dan dimanfaatkan secara optimal. Kegiatan pengabdian kepada masyarakat ini bertujuan mendukung penerapan infrastruktur berkelanjutan melalui optimalisasi pemanfaatan limbah konstruksi sebagai bahan baku alternatif beton non-struktural. Program dilaksanakan melalui tahapan identifikasi jenis dan volume limbah (±1–2 ton per minggu), pengolahan awal (pengeringan, penghancuran, dan pengayakan), perancangan komposisi campuran (mix design), pencetakan produk, curing selama 28 hari, serta pengujian kuat tekan dan daya serap air. Hasil perancangan menghasilkan batako berdimensi 40 × 20 × 10 cm, paving block 20 × 10 × 6 cm, serta saluran beton pracetak dengan lebar 40–85 cm dan tinggi 45–60 cm. Secara teknis, agregat limbah batching plant efektif sebagai substitusi parsial agregat alami, sedangkan residu AMP berfungsi sebagai filler yang meningkatkan kepadatan dan menurunkan porositas beton. Produk yang dihasilkan memenuhi kriteria mutu beton non-struktural untuk aplikasi pagar, perkerasan pejalan kaki, dan saluran drainase kawasan industri skala kecil–menengah maupun saluran irigasi. Kegiatan ini berkontribusi pada pengurangan timbulan limbah, efisiensi biaya material, serta penguatan prinsip ekonomi sirkular dalam pembangunan infrastruktur berkelanjutan.
ANALISIS RISIKO PENGENDALIAN K3 DENGAN METODE JOB HAZARD ANALYSIS dan PENDEKATAN HAZARD IDENTIFIKATION, RISK ASSESSMENT and RISK CONTROL (HIRARC) : STUDI KASUS PROYEK PEMBANGUNAN GEDUNG PARKIR DAN GEDUNG PLAZA UNIVERSITAS GUNADARMA KAMPUS E Sitepu, Arif Rahman Hakim
Jurnal Kajian Teknik Sipil Vol 11, No 1 (2026): JURNAL KAJIAN TEKNIK SIPIL
Publisher : Universitas 17 Agustus 1945 Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52447/jkts.v11i1.9384

Abstract

Pembangunan Gedung Parkir Universitas Gunadarma Kampus E memiliki berbagai potensi risiko kecelakaan kerja yang perlu dianalisis untuk memastikan keselamatan pekerja. Penelitian ini bertujuan mengidentifikasi bahaya menggunakan metode Job Hazard Analysis dan pendekatan Hazard Identification, Risk Assessment, and Risk Control (HIRARC) serta menilai tingkat risiko menggunakan Likelihood Index (LI) dan Severity Index (SI). Hasil menunjukkan bahwa potensi bahaya berada pada kategori Low hingga High dengan distribusi 60% Low, 34,28% Medium, dan 5,72% High. Risiko dengan severity tertinggi (100%) terdapat pada bahaya jatuh dari ketinggian, kecelakaan alat berat, bahaya listrik, serta kebakaran dan ledakan, sedangkan likelihood tertinggi (100%) muncul pada risiko tersandung atau terpeleset serta pencemaran suara. Tingginya risiko dipicu oleh ketidakpatuhan penggunaan APD, area kerja yang tidak tertata, kurangnya penerangan, dan minimnya pengawasan keselamatan. Untuk memitigasi risiko tersebut, disarankan peningkatan penggunaan APD, pelaksanaan pre-job safety meeting (PJSM), perbaikan housekeeping, serta pemeriksaan rutin peralatan dan area kerja
The Effect of Relative Density of Geosynthetic Encased Stone Columns on the Bearing Capacity and Consolidation of Soft Soil Hayati, Julita; Simamora, Johanes; Sitepu, Arif Rahman Hakim
Borneo Engineering: Jurnal Teknik Sipil Volume 10 Nomor 1 Tahun 2026
Publisher : Jurusan Teknik Sipil, Fakultas Teknik, Universitas Borneo Tarakan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35334/be.v10i1.574

Abstract

Building roads on soft soil is a problem that must be faced due to the behavior of soft soil. The low bearing capacity is the primary issue, accompanied by significant settlement due to the soil's high compressibility. Soft soil is present in the Indrapura-Kisaran Toll Road Construction Project, ranging from STA 111+505 to STA 112+300, so reinforcement is necessary. The reinforcement method used is Geosynthetic Encased Stone Columns (GESC). The density of the GESC material used in this method needs to be examined to determine the effectiveness of GESC in reducing settlement and increasing soil-bearing capacity. The analysis process conducted in this study involves analyzing reinforcement using GESC with empirical and numerical methods. This study uses variations in the relative density of the column material at 25%, 50%, 75%, and 100%. After reinforcement, the soil-bearing capacity increased by 280,37 to 361,71%. Additionally, GESC reinforcement was also able to reduce settlement by up to 64,96% using the analytical method and 41,6% using the numerical method, with a consolidation time reduction of 93,38% to 94,52%. The reduction in relative soil density causes settlement to increase by ±7,2% because the friction angle of the column decreases.
Co-Authors A. Nurlela A. Salsabila Ahmad Auliadi Y Ahmad Yudi AJ. Tampubolon Alexander Wicaksono Budiarto Alfredo, Alexander Andry Yuliyanto Aprilia, Ayu Sinta Apriwelni, Siska Ayu Sinta Aprilia Ayudia Hardiyani Kiranaratri Berkah Nadi, M. Abi Bernaditha Catur Marina Budi Ribowo, Anggarani Cahyo Agung Saputra CE. Sigalingging D. Nofria Riska Dallis Evalinesuri, Agnes Delfinna, R. Dian Perwitasari Ekaputra, Reza Asriandi F. Silalahi Fadhilah Ramadhan Fadillah Sabri FB. Lestari Fitriana, Indri Rahmandhani G. Sembiring Galih Rio Prayogi Haloho, Stefany Hazizi, S. Idrus Muhammad Alatas Ilpandari, Ilpandari Ina Asha Nurjanah Julita Hayati Julita Hayati Junita Eka Susanti Khanza, Ayu Kamila Kirtinanda P. Kirtinanda P. Kurnianingtyas, Erlina Kurniawan, rah Lindawati Lindawati M Gilang Indra Mardika Marina, Bernaditha Catur Masyhur Irsyam Maudy Anisa Fanani Michael Michael Miskar Maini ML. Lazuardi Mohammad Anwar Fathoni Nadi, Abi Berkah Nadi, Muhammad Abi Berkah Novalina, Winny Nurlela, Aiga P Kirtinanda P, Kirtinanda Panji Asmara, Rawid Putri Ayu Dwiyana R. Delfinna R. Shabirah R. Sitinjak Rahmat Kurniawan Rahmat Kurniawan Rahmat Kurniawan Rendy Dwi Kartiko Riyan Hari Putra S. Hazizi S., Andi Sajid, Ahmad Salsabila, A. Satrio Adrian Shabirah, R. Shafira Annisa Putri Sigalingging, CE. Sihombing, Tera Melya Patrice Simamora, Johanes Simanjuntak, Indi Rezki Uli Sinta Aprilia, Ayu Sinuraya, William Zones Siti Rahma Sugeng Krisnanto Syahidus Syuhada Syahidus Syuhada Tambunan, Hermon Frederik Tiorivaldi Tiorivaldi Tyagita Utami, Erdina Utami, Erdina Tyagita YA. Gurning Yuliyanto, Andry Yunita Asni Zhafira, Elian