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Andi Rumpang Yusuf
Program Studi Teknik Sipil Fakultas Teknik Universitas Bosowa
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Analisis Stabilisasi Tanah Lempung Dengan Menggunakan Ampas Kopi Dan Arang Kayu Terhadap Nilai CBR Anggareksa, Tenri Angka Arya; Yusuf, A. Rumpang; Cangara, Satriawati
Jurnal Penelitian Teknik Sipil Konsolidasi Vol. 4 No. 1 (2026): Jurnal Penelitian Teknik Sipil Konsolidasi, Januari 2026
Publisher : Program Studi Teknik Sipil Universitas Bosowa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56326/jptsk.v4i1.4331

Abstract

Considering that almost all buildings are built on or on the surface of the land, the land must have resistance to the building or the forces that work through the building by stabilizing the quality of the soil. This research aims to analyze the effect of using coffee grounds and wood charcoal on the geotechnical properties of clay soil. The main focus of the research is on changes in the Unsoaked CBR (California Bearing Ratio) value of clay soil due to the addition of coffee grounds and wood charcoal, both of which have binding properties such as coffee grounds which contain organic C (44.87%), N. (1.69%), K(2.49%), Na(0.04%), P(0.18%), pH (5.6) and wood charcoal can improve water and air circulation so that it can bind carbon and reduces soil swelling and shrinkage. The experimental method was used by mixing 10% wood charcoal and variations of coffee grounds 5%, 10% and 15% into clay soil samples. The results of testing the soil characteristics showed that the soil according to AASHTO was clay soil. Meanwhile, according to the USCS classification, this soil is included in the CH category (high plasticity inorganic clay). The results of the research showed that adding 10% Wood Charcoal to the original soil could increase the CBR value by 23.91%, while in the Wood Charcoal variation with the addition of Coffee Grounds by 5%, 10% and 15%, the CBR value decreased by 18.42%. 15.38%, and 9.57%.
Analisis Stabilitas Bendung Kalukku Kabupaten Mamuju Moily, GoldyAwan J.; Badrun, Burhanuddin; Yusuf, Andi Rumpang
Jurnal Penelitian Teknik Sipil Konsolidasi Vol. 4 No. 1 (2026): Jurnal Penelitian Teknik Sipil Konsolidasi, Januari 2026
Publisher : Program Studi Teknik Sipil Universitas Bosowa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56326/jptsk.v4i1.4361

Abstract

A weir is a water structure with equipment built across a river. Weirs are designed to meet stability requirements, to guarantee the service life of the weir and its ability to raise the water level. Weir stability consists of stability against overturning, stability against soil bearing capacity, stability against shear forces, and eccentricity of loading. The problem formulation is the security value of the stability of the Kalukku Bnedung under normal conditions and river flooding. The aim of this research is an analytical study of the safety value of the Kalukku Dam under normal conditions and river flooding. The research method uses a survei method through literature study, collecting primary data, secondary data, rainfall analysis, and measuring weir stability. The dimensions of the Kalukku weir are 105 meters wide and the overall width of the weir is 111 meters. The research results show that stability against overturning (sf = 4.20 > 1.5) is safe, stability against sliding (sf = 1.99 > 1.50) is safe, the eccentricity of the load that occurs (e = 0.79 m < 4.21 m), the bearing capacity of the soil or the soil stress that occurs (omax = 22.61 tons/m2 > 1.37 t/m2), (omin = 10.28 tons/m2 > 0.63 t/m2). Stability value in flood water conditions, stability against overturning (sf = 3.9 > 1.25) which is safe, stability against sliding (sf = 1.50 > 1.2) which is safe, eccentricity of the load that occurs (e = 0.87 m < 2.10 m), soil bearing capacity or the soil tension that occurs (omax=13.56 tons/m2 > 1.41 t/m2), (omin= 5.61 tons/m2 > 0.59 t/m2).
Perencanaan Daya Tampung Bendungan Budong - Budong Kabupaten Mamuju Tengah Sabri, Mohammad Noer Akbar; Badrun, Burhanuddin; Yusuf , Andi Rumpang
Jurnal Penelitian Teknik Sipil Konsolidasi Vol. 4 No. 1 (2026): Jurnal Penelitian Teknik Sipil Konsolidasi, Januari 2026
Publisher : Program Studi Teknik Sipil Universitas Bosowa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56326/jptsk.v4i1.4364

Abstract

Dam construction is very necessary for irrigation, raw water supply and flood control, the main requirement for its construction is its stability. If stability is not met, it will trigger dam safety problems such as leaks, seepage, landslides, erosion and cracks. So, it is necessary to plan capacity by measuring the elevation, area and volume of several layers by involving literature studies, determining data requirements, providing administrative requirements, data collection from related agencies, and site surveys as an illustration of field conditions. The data is processed to obtain cumulative volume and presented in a table. Analysis of the water capacity of the Budong- budong dam in Central Mamuju Regency, West Sulawesi Province, is important in planning and managing water resources. The results of this research indicate that the Budong - Budong dam was built with a storage capacity of 57,284,568 m3 at an elevation of 70+. The dam was built using a type of rock fill dam with a clay core, due to the availability of sufficient rock material around the dam location.
Analisis Ketersediaan Dan Kebutuhan Air Baku Kab. Bantaeng : Studi Kasus: Bendungan Karatuang, Kab. Bantaeng, Sulawesi Selatan Yusriyani, Sri; Yusuf , Andi Rumpang; Syahrir, Suryani
Jurnal Penelitian Teknik Sipil Konsolidasi Vol. 4 No. 1 (2026): Jurnal Penelitian Teknik Sipil Konsolidasi, Januari 2026
Publisher : Program Studi Teknik Sipil Universitas Bosowa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56326/jptsk.v4i1.4580

Abstract

Dams are built to hold and accommodate water and function as water catchers and to store them in the rainy season when river water flows in large quantities and exceeds requirements for irrigation, drinking water or industrial purposes. The Karatuang Dam, which is located in Bantaeng Regency, was built in the Calendu river basin, which has problems related to meeting the needs and availability of raw water. Bantaeng Regency often experiences drought during the dry season, which results in the land becoming very dry. So it is necessary to know how much the total raw water demand, water availability and reservoir capacity will be until 2042. It is necessary to research the population using arithmetic and geometric methods to find out how much increase will occur over the next 20 years. So it can be ascertained how large the population will be served until 2042 in Bantaeng Regency. It is necessary to research the annual maximum rainfall using several rainfall stations in this research to help determine adequate water needs. As well as, analyzing the frequency of rainfall using various methods including the gumbel distribution method, normal distribution method, log normal distribution method, Log Pearson Type III distribution method.
Analisis Pengendalian Banjir Pada Wilayah Desa Kupa Kabupaten Barru Putra F, Fachrezy; Yusuf, Andi Rumpang; Badrun, Burhanuddin
Jurnal Penelitian Teknik Sipil Konsolidasi Vol. 4 No. 1 (2026): Jurnal Penelitian Teknik Sipil Konsolidasi, Januari 2026
Publisher : Program Studi Teknik Sipil Universitas Bosowa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56326/jptsk.v4i1.4996

Abstract

Flooding is a natural disaster event that occurs when excessive water flow inundates the land. In Barru Regency, Kupa Village is a coastal area that includes an area prone to flooding. Flooding in Kupa Village greatly affects traffic where when flooding traffic on the Makassar - Pare-pare axis road is jammed even making cars or motorbikes can break down in the middle of a high puddle, therefore flooding in Kupa Village needs to be studied to find solutions to overcome it. This research was conducted in Kupa Village with the aim of analyzing the amount of rainfall and flood discharge for the return period of 25, 50 and 100 years and analyzing flood control methods. Furthermore, the plan flood discharge analysis was carried out using the HSS Nakayasu method, based on the calculation obtained the 25-year return period flood discharge (Q25) of 238,164/sec, 50-year return period (Q50) of 245,188 /sec, 100-year return period (Q100) of 251,770 /sec. From the analysis of runoff data in Kupa Village is 22.5110945/sec, where if there is a tide up to 1.7 m high along with rain that falls 1-3 hours or more resulting in flooding in the village of Kupa and the results of the analysis for the right building in overcoming flooding in Kupa Village is the installation of embankments around the Makassar - Pare-pare Axis road.
Alternatif Perancangan Dinding Penahan Tanah Tipe Kantilever Untuk Perbaikan Longsoran Lereng Jalan Ruas Jalan Nasional Ampera – Surumana Sulawesi Tengah Saputri K, Sri Sulka Octavia; Yusuf, A. Rumpang; Yuniarto, Eka
Jurnal Penelitian Teknik Sipil Konsolidasi Vol. 4 No. 1 (2026): Jurnal Penelitian Teknik Sipil Konsolidasi, Januari 2026
Publisher : Program Studi Teknik Sipil Universitas Bosowa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56326/jptsk.v4i1.5041

Abstract

In earthquake-prone areas and on slopes at risk of landslides, appropriate slope reinforcement measures are essential. On the Ampera-Surumana road in Central Sulawesi, a landslide of 4.45 meters occurred on a slope opposite a river bend. This landslide was caused by river water seepage, load distribution, and seismic activity that damaged the existing stone masonry retaining wall. This study proposes a cantilever retaining wall as an alternative solution to address the landslide. Slope stability analysis was conducted using GEO5 software and the manual Bishop method. Before loading, the existing slope was safe, with a factor of safety (FS) of 2.29 (unsaturated) and 1.95 (saturated) according to GEO5, and 2.30 (unsaturated) and 1.95 (saturated) per Bishop method. However, after loading, the FS decreased to 1.22 (unsaturated) and 1.10 (saturated) based on GEO5 analysis, and 1.23 (unsaturated) and 1.10 (saturated) according to Bishop method. The analysis indicated a need for soil reinforcement. The stability analysis of the reinforced cantilever retaining wall showed significant increases in FS, with values of 2.59 for overturning, 2.48 for sliding, and 3.38 for bearing capacity using GEO5, and 3.07 for overturning, 2.29 for sliding, and 3.28 for bearing capacity from manual calculations, confirming the effectiveness of the cantilever design in improving slope stability according to SNI 8460:2017.
Penggunaan Vermikulit Dan Kapur Pada Kuat Tekan Bebas Dan Kuat Geser Tanah Lempung Saputrah, Yosrin Adi; Sariman, Syahrul; Yusuf, A. Rumpang
Jurnal Penelitian Teknik Sipil Konsolidasi Vol. 4 No. 1 (2026): Jurnal Penelitian Teknik Sipil Konsolidasi, Januari 2026
Publisher : Program Studi Teknik Sipil Universitas Bosowa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56326/jptsk.v4i1.5117

Abstract

Clay soil is a soil that has a high potential for shrinkage if there is a change in the soil water content system. Expansive soil has a large shrinkage. Stabilization of clay soil is an important step in geotechnical engineering to improve the physical and mechanical properties of the soil, especially in supporting building structures. This study aims to evaluate the effect of adding vermiculite and lime on the unconfined compressive strength (UCS) and shear strength of clay soil. Vermiculite, as a mineral additive material that has high expansion and cation exchange capacity, combined with lime which is chemically able to improve soil stability and strength through pozzolanic reactions. One method of improving expansive clay soil is by adding vermiculite and lime as soil stabilization materials. In this study, shear strength and compressive strength tests will be carried out on soil samples stabilized with vermiculite and lime. This study used 6% vermiculite and variations of lime at 0%, 5%, 10%, 15% which were then tested using the UCS test and direct shear test. The results of the study showed that the highest shear strength, cohesion, and friction angle values were obtained with the addition of 6% vermiculite and 15% lime, namely 0.9247% for shear strength, 0.4392% for cohesion, and 27.57% for friction angle. Similarly, in the compressive strength test, the highest increase occurred with the addition of 6% vermiculite and 15% lime with a stress value of 1.155%.
Co-Authors Abdurrachman Rahim Afdal, Muhammad Wahid Ahmad Swandi Akmal, Muh Akrim, Djusdil Alhabsyi, Alawiyah Chaerunisa Amiruddin, Ahmad Andi Zulfikar Syaiful Anggareksa, Tenri Angka Arya Anggraeny, Nur Syifa Anna, Natalia Arman Setiawan Azzahrah, Andi Nur Azizah Fajry Badrun, Burhanuddin Burhanuddin Badrun Burhanuddin Badrun Cangara, Iin Fitrianty Suaib Cangara, Satriawati Chau, Jaycin Agnes Elisa Eka Yuniarto Eryan, Enol Fadhila, Febrianty Firmiaty, Sri Harianto, Dwi Yuli Hijriah Hijriah Irfan, Achmad Ishak, Wanda Mey Fasthika Joni, Yafettt Latif, Rudi Latuheru, Alfian Feliks Lutfian, Muhammad Alif Maulina, Anandha Moily, GoldyAwan J. Muh. Fikruddin Buraerah Muhammad Agung Nugraha Muhammad Syarif, Muhammad Muyassar, Muhammad Nurdin, Abd. Rahim Nurlita pertiwi, Nurlita Patunrangi, Muhammad Haekal Poetry, Seren Adelia Prasanti, Savitri Purnama, Ika Reski Putra F, Fachrezy Ramdan, Ramdan Randan, Yurike Rande, Hasniar Ambo Rifaldi, Zainal Riosetiawan, Andi Ahmad Riswan Riswan Romdhani, Sulthon Kharomaeni Sabri, Mohammad Noer Akbar Salsabila, Nur Azizah Saputrah, Yosrin Adi Saputri K, Sri Sulka Octavia Sardinar, Tyas Maulida Sariman, Syahrul Sultan, Arsy Fakroh Ibnu Suryani Syahrir SYAMSU ALAM Utami, Indah Suci Yunita Yunita Yusriyani, Sri