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All Journal International Journal of Science and Engineering (IJSE) Jurnal Ilmiah Poli Rekayasa IPTEK Journal of Proceedings Series Jurnal Dampak jurnal niara Jurnal Penelitian Pendidikan IPA (JPPIPA) Syntax Literate: Jurnal Ilmiah Indonesia Civil Engineering Dimension Rang Teknik Journal Jurnal Rekayasa Sipil Ensiklopedia of Journal Jurnal Ilmiah Rekayasa Sipil Jurnal Pembangunan Nagari Jurnal Civronlit Unbari Journal of Applied Engineering and Technological Science (JAETS) Jurnal Amplifier: Jurnal Ilmiah Bidang Teknik Elektro dan Komputer Jurnal Talenta Sipil Jurnal Teknik Sipil Institut Teknologi Padang Journal of Civil Engineering and Vocational Education
Bambang Istijono, Bambang
Civil Engineering Dept., Andalas University, Senior Lecturer, Padang
Agriculture, Biological Sciences & Forestry Arts Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Engineering Environmental Science Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Physics Public Health Social Sciences Transportation Other

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Analisis Faktor Penyebab Keterlambatan Pelaksanaan Proyek Sumber Daya Air (SDA) di Provinsi Kepulauan Riau Gunawan, Indra; Istijono, Bambang; Boy, Wendy
Jurnal Teknik Sipil Institut Teknologi Padang Vol 12 No 1 (2025): Jurnal Teknik Sipil institut Teknologi Padang
Publisher : ITP Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21063/jts.2025.V1201.097-104

Abstract

Dalam pelaksanaan proyek konstruksi, dapat terjadi keterlambatan pada masing-masing proyek, yang dapat mengakibatkan tertundanya masa konstruksi dan berkurangnya keuntungan yang dicari oleh pemilik dan kontraktor. Keterlambatan konstruksi menyebabkan peningkatan biaya konstruksi karena masa konstruksi yang lebih lama sehingga mempengaruhi keuntungan pemilik dan kontraktor. Pada  penelitian ini dilakukan  identifikasi faktor-faktor yang menjadi penyebab keterlambatan pelaksanaan proyek serta faktor dominan dan solusi dari pelaksanaan proyek sumber daya air di provinsi Kepulauan Riau. Metode yang digunakan dalam penelitian ini adalah metode penelitian kuantitatif. Responden yang dipilih adalah pemilik, konsultan pengawas, dan kontraktor yang terlibat dalam proyek ini pada tahun 2019 hingga 2022. Jumlah koresponden yang digunakan dalam penelitian ini adalah 103 orang. Dengan pengolahan data menggunakan SPSS, didapatkan hasil variabel uji validitas mengenai pengetahuan tenaga kerja dengan nilai r hitung sebesar 0,390 dan nilai tabel r sebesar 0,1937 dan mendapatkan keputusan valid. Pada hasil uji reabilitas case prosessing summary di atas menunjukkan sampel (N) 103 100 % dinyatakan valid. Dari 24 variabel, semua variabel menghasilkan nilai MSA di atas 0,50 sehingga variabel layak digunakan dan bisa dilanjutkan uji analisis berikutnya. Dari analisis yang dilakukan terdapat 7 faktor yang menjadi penyebab keterlambatan pelaksanaan proyek sumber daya air di provinsi Kepulauan Riau yaitu ketersediaan bahan, pengiriman bahan, terlambat pemesanan material, cuaca, ketersediaan peralatan, ketersediaan tenaga kerja dan pengetahuan serta SDM pimpinan kontraktor tidak sesuai kualifikasi. Sedangkan faktor yang paling dominan adalah faktor material dan peralatan.
Identifikasi dan Pemetaan Masalah di Nagari Pasca Bencana Erupsi Gunung Marapi di Sumatera Barat Mahdi, Mahdi; Istijono, Bambang; Yossafra, Yossafra; Ismail, Febrin Anas; Hakam, Abdul; Adji, Bayu Martanto; Saputra, Dendi; Andriani, Andriani; Narny, Yenny; Giffari, Muhammad Al; Zis, Sirajul Fuad; Yuliet, Rina
Jurnal Talenta Sipil Vol 8, No 1 (2025): Februari
Publisher : Universitas Batanghari Jambi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33087/talentasipil.v8i1.705

Abstract

Mount Marapi is an active volcano located in West Sumatra. The eruptions of Mount Merapi have a significant impact on the social and economic conditions of the surrounding communities. This study aims to identify and map the post-disaster issues in the nagari affected by the eruption of Mount Marapi in West Sumatra Province to formulate appropriate mitigation measures. Using a descriptive qualitative approach with a case study method, data were collected through direct observation, in-depth interviews, and photographic documentation. The results of the study show that infrastructure damage, including roads and bridges, hinders mobility and aid distribution, while the agricultural and livestock sectors suffer substantial losses. The social impacts include loss of housing and psychological trauma, while the economic impacts are evident in the significant losses faced by small and medium enterprises (SMEs). Health concerns, such as increased respiratory and skin diseases, as well as sanitation issues, are also major concerns. Mitigation efforts undertaken include infrastructure repairs, construction of embankments, public education on disaster preparedness, and psychological support for disaster victims. This study highlights the importance of comprehensive and sustainable mitigation strategies to reduce the impact of disasters and ensure the well-being of communities in disaster-prone areas.
A Risk Analysis Affecting Project Implementation with Contract Values Below 80% of the Owner's Estimated Price Istijono, Bambang; Ophiyandri, Taufika; Gustia, Siti Rahmi
Jurnal Talenta Sipil Vol 8, No 1 (2025): Februari
Publisher : Universitas Batanghari Jambi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33087/talentasipil.v8i1.781

Abstract

The number of bids is less than 80% of the HPS, meaning that the work offered will be carried out at a cost of less than 80% of the estimated cost of the person in charge of the work. In the 2020 period the average percentage of contract value with an offer value of < 80% HPS at Agency x tends to increase significantly by 80% compared to the 2019 period. If the HPS preparation is assumed to have been carried out in accordance with expertise and supported by accountable data. Therefore, the implementation of a contract with a bid value below 80% HPS has a greater possibility of risk in the field compared to a contract value with an offer value above 80% HPS. The method used in carrying out this research is the descriptive method, namely through direct interviews with the Commitment Making Officer (PPK) at agency x to obtain information about the purpose of this research, namely, knowing what risks arise, the causes of risks, and what anticipatory steps are taken. to reduce risk. From the results of data processing after being validated with sources, the risks that arise are: contract extension, contract termination, reduced construction age, disputes, and bad news from local media caused by the bid value which is considered unreasonable. Steps taken by the owner as the owner of the project to reduce risk are Terminating the contract for projects found to be deviant according to applicable regulations and tightening supervision to maintain the quality of work.
Post-Disaster Engineering Strategy for Anai River Debris Flow Management on Anai Valley National Road West Sumatra Indonesia Andriani Andriani; Bambang Istijono; Rahmad Yuhendra; Mahdi Mahdi; Muhammad Al Giffari; Arian Dodi; Bayu Martanto Adji
Journal of Applied Engineering and Technological Science (JAETS) Vol. 6 No. 1 (2024): Journal of Applied Engineering and Technological Science (JAETS)
Publisher : Yayasan Riset dan Pengembangan Intelektual (YRPI)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37385/jaets.v6i1.5845

Abstract

One of the causes of flash floods is eruption material from Mount Marapi that is carried downstream, disrupting transportation access and the local economy. This study aimed to design and implement an effective post-disaster engineering strategy for debris flow management in the Anai River and evaluate its long-term success. Data were collected through field observations to measure river profiles, photogrammetry, and sediment sampling. Secondary data were used to calculate rainfall intensity and flood discharge in the Anai River to plan debris flow control. The study results showed that the large catchment area and high rainfall contributed significantly to the high peak discharge. Disturbed soil samples taken from the river surface were saturated, indicating the influence of sediment from the debris flow from the eruption of Mount Marapi. The removal of material from the riverbed needs to be controlled to avoid overexploitation that could exacerbate erosion of the riverbanks, ultimately threatening bridge structures and other infrastructure along the Anai River. To overcome this problem, it is necessary to build sediment control structures such as check dams and groundsills, as well as secure riverbanks in the management of debris flows in the Anai River.
Penanganan Longsor Pada Ruas Jalan Padang – Painan (Sta. 50+950 - 51+035) di Kabupaten Pesisir Selatan dengan Dinding Penahan Tanah dan Fondasi Tiang Bor Laurency, Sonya Ostha; Andriani, Andriani; Hakam, Abdul; Istijono, Bambang
Jurnal Ilmiah Rekayasa Sipil Vol 22 No 1 (2025): April 2025
Publisher : Pusat Penelitian dan Pengembangan Masyarakat (P3M), Politeknik Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30630/jirs.v22i1.1765

Abstract

High rainfall on steep slopes along the Padang – Painan city boundary road (Sta 50+950 – Sta 51+035) Pesisir Selatan Regency resulted in landslides and damage to retaining walls. This study aims to analyze slope stability, and retaining wall stability without and using bored pile foundations. The retaining wall used in this study is the Cantilever type. Slope stability analysis using the slices method was carried out by trial and error three times, the results showed a safety factor value (FS <1.25) which means the slope is unstable. The results of the slope improvement analysis using cantilever retaining wall without bored pile foundations showed that the structure was safe against overturning (FS = 3.9) and shear safety (FS = 2.3), but not safe against soil bearing capacity (FS = 1.5 <3). The addition of a single bored pile foundation to the retaining wall increased the bearing capacity to 3,443.43 kN but was unable to withstand the design load of 41,766.45 kN. Therefore, a pile group foundation with a maximum load capacity of 482,080.27 kN, and a permissible bearing capacity of 192,832 kN is used so that it can withstand the structural load. The estimated cost of geotechnical and structural work is Rp10,361,534,397.05 with an implementation time of 10 weeks. The results of this study provide technical recommendations for comprehensive slope and DPT repairs for similar conditions in the future.
Efektivitas Program Kota Tanpa Kumuh (Kotaku) Dalam Menangani Permukiman Kumuh Di Kota Padang : (Studi Kasus : Kelurahan Binuang Kampung Dalam Kecamatan Pauh) Fitria Yulia; Bambang Istijono; Benny Hidayat
Jurnal Niara Vol. 16 No. 3 (2024): Januari
Publisher : FAKULTAS ILMU ADMINISTRASI UNIVERSITAS LANCANG KUNING

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31849/niara.v16i3.18758

Abstract

West Sumatera Province is one of the 15 provinces with the highest slum area in Indonesia. The city of Padang, as the largest city and the provincial capital, has a number of slum areas with an area of 122.33 ha. Of the 22 Kelurahan in Padang, one of the widest slum areas is in the Kelurahan Binuang Kampung Dalam. The KOTAKU program is then present to direct and synergize all forms of collaboration between parties to prevent and improve the quality of slum settlements, especially the community as active development subjects. Within two years, the KOTAKU program initiated CFW (Cash For Work) and Sanitation Assistance activities with a total budget of nearly one billion by involving the full participation of the people there. This thesis aims to analyze how effective and the inhibiting factors of the KOTAKU Program are in dealing with slum settlements in Binuang Kampung Dalam Village. This study used a descriptive qualitative approach, and the method of selecting informants used a purposive sampling technique with the method of measuring program effectiveness using the Pentagonal Assets 7 Indicators. The results showed that the implementation of the KOTAKU program in Binuang Kampung Dalam Kelurahan focused on road repairs with a volume of 2,352.4 meters, drainage improvements with a volume of 275.7 meters, community capacity building 1 package, and sanitation improvement assistance to 100 families. However, the KOTAKU program is still considered less effective, because it does not bring changes to the other three indicators. The factors inhibiting the effectiveness of the program are the absence of programs on the indicators of building order, waste management and fire protection and the slow disbursement of funds
Laboratory Study of Geotechnical Characteristics of Soil in Landslide-Prone Zone in Talamau District, West Pasaman Regency Nofrizal; Fauzan; Hakam, Abdul; Istijono, Bambang; Setiawan, Andriani; Aprisal
Jurnal Penelitian Pendidikan IPA Vol 11 No 8 (2025): August
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v11i8.12046

Abstract

The main triggering factor for landslides is high rainfall intensity, especially during the rainy season. Excessive rainfall can cause an increase in water content in the soil, which in turn will reduce the shear strength of the soil and increase the volume weight of the soil. The method used is a laboratory experiment by taking samples from the field. The sample of this study was sandy clay soil taken from a landslide-prone area located in Talamau District, West Pasaman Regency. Based on the results of soil geotechnical laboratory tests in the landslide-prone zone in Talamau District, West Pasaman Regency, it can be concluded that the soil sample has moderate plasticity characteristics with a Liquid Limit of 59.39%, Plastic Limit of 49.77%, and Plasticity Index of 9.62%. The soil reaches a maximum dry density of 1.37 gr/cm³ at an optimum water content of 500 ml, with a grain size distribution dominated by the sand fraction (83.978% retained on sieve No. 4-20) and a very low fine material content (1.234%). The results of the triaxial test showed soil behavior that varied from brittle to strain-hardening depending on the level of cell stress. Overall, the soil can be classified as well-graded sand with good drainage but low cohesion, thus requiring additional stabilization for construction applications in landslide-prone areas.
Co-Authors -, Amrizal Saidi AA Sudharmawan, AA Abdul Hakam Abinight, Akbaar Ade Kurnia Putri Adhadi Kurniawan Ahmad Junaidi Ahmad Junaidi Ahmad Junaidi Ahmad, Dzakwan Fathullah Akhmad Suraji Alfito Alfito Amrizal Saidi Andriani Andriani Andriani Andriani Andrizky Andrizky Aprisal Ari Syaiful Rahman Arifin Arian Dodi Bayu Martanto Adji, Bayu Martanto Benny Hidayat Benny Hidayat Boy, Wendy Bujang Rusman Daoed, Darwizal Dasril Dasril Desirwan, Haikal Fikri Elvi Roza Syofyan Farah Sahara Farid Akmal Fauzan Febiana Maulani Febrin Anas Ismail Ferdian Al Hadri Ferial, Rudy Firdaus Firdaus Fitria Yulia Giffari, Muhammad Al Gustia, Siti Rahmi Handayani, Yanolanda Suzantry Hendy Jaza, Muhamad James Hellyward Junaidi Junaidi Junaidi Junaidi Junaidi, Junaidi Khatab, Umar Laurency, Sonya Ostha Madjid, Tsabita Alliya Mahdi Mahdi Mahdi Mahdi, Mahdi Mochammad Imron Awalludin Muhamad Arifin Muhammad Al Giffari Narny, Yenny Nofrizal Nofrizal Nurhamidah, Nurhamidah Ophiyandri, Taufika Ophiyandri, Taufika Rahmad Yuhendra Revalin Herdianto Ridha Sari Rina Yuliet, Rina Rinaldi Ekaputra RR. Ella Evrita Hestiandari Sakri, Harfa Saputra, Dendi Sari, Ridha Sunaryo, Budi Taufika Ophyandri Umar Khatab Wahyu Putra Utama Yervi Hesna Yolla Fransiska Yossafra, Yossafra Yuliza, Yenni Zis, Sirajul Fuad