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All Journal WIDYATAMA Jurnal Teknik Sipil JITEK (Jurnal Ilmiah Teknosains) JMPM (Jurnal Material dan Proses Manufaktur) Astonjadro Bearing : Jurnal Penelitian dan Kajian Teknik Sipil Jurnal Komposit : Jurnal Ilmu-Ilmu Teknik Sipil Jurnal Pendidikan IJECS: Indonesian Journal of Empowerment and Community Services Jurnal Abdi Masyarakat Indonesia E-Jurnal SPIRIT PRO PATRIA Sultra Civil Engineering Journal (SCiEJ) Jurnal Talenta Sipil Surakarta Civil Engineering Review Jurnal Jaringan Penelitian Pengembangan Penerapan Inovasi Pendidikan (Jarlitbang) Inisiasi Momentum Jurnal Inovasi dan Rekayasa Teknik Sipil (MJIRTS)
Iwan Ristanto
Universitas Veteran Bangun Nusantara Sukoharjo
Religion Agriculture, Biological Sciences & Forestry Humanities Civil Engineering, Building, Construction & Architecture Computer Science & IT Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Engineering Health Professions Industrial & Manufacturing Engineering Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mathematics Mechanical Engineering Public Health Social Sciences Transportation Veterinary Other

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Solar Energy-Based Fisheries Appropriate Technology Program Pokmas Water Resources Management Purwosari Village, Wonogiri Iwan Ristanto; Annisa Azhar Firdausi Firdausi; Tantin Pristyawati; Rian Prasetyo
IJECS: Indonesian Journal of Empowerment and Community Services Vol. 6 No. 2 (2025)
Publisher : Universitas Veteran Bangun Nusantara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32585/ijecs.v6i2.7237

Abstract

Agriculture, livestock, and fisheries are key sectors that support the economic life of the majority of the Purwosari village community. They face environmental and social vulnerabilities, while also facing economic vulnerability. This is achieved by transforming traditional technologies currently used by the community to increase fisheries yields and downstream marketing through Free Nutritional Meal Kitchens (MBG) in the surrounding Wonogiri area. Strengthening village human resource development through the empowerment of Appropriate Technology (PTTG) in Purwosari Village, Wonogiri, aims to encourage energy independence in the economic activities of community groups. This includes strengthening the human resources of the Purwosari village community health post (Posyantek) for the construction of 200W solar cell TTGs and 2000W converters, solar-powered pond water pumps, and the construction of aquaculture ponds; and for freshwater fisheries. In general, the assembly of solar-powered water pump models can be adapted to field conditions and market availability. The core of this assembly is converting the electricity supply from the state electricity company (PLN) into electricity from natural sources (sunlight). The necessary equipment includes: Solar panels/solar cells (photovoltaic), controller, inverter, battery, cables, and mounting frame. The life cycle cost calculation for a solar-powered fisheries system at the PSDA Community Group (Pokmas PSDA), with solar-powered pumps and lights, shows a cost efficiency of Rp. 61,600,000 – Rp. 19,665,000 = Rp. 41,935,000 (assuming the equipment's life cycle cost is 10 years), resulting in a cost savings of 67%.   Keywords: Fisheries, PSDA Community Group, Solar Energy, TTG
ANALISIS PERBANDINGAN KINERJA WAKTU DAN BIAYA PROYEK MENGGUNAKAN METODE EARNED VALUE ANALYSIS (Studi Kasus : Kinerja Kontraktor Proyek Pekerjaan Jalan) Ristanto, Iwan; Ayu Septiana, Dellia; Agung Wibawa, Satria
Inisiasi Volume 14, Edisi 2, Desember 2025
Publisher : Badan Perencanaan Pembangunan Daerah dan Penelitian dan Pengembangan Kabupaten Wonogiri

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59344/inisiasi.vi.321

Abstract

The purpose of this study is to determine the comparison of contractors' time and cost performance using the Earned Value Analysis method. The required data include general project data, Project RAB, S-Curve, and Weekly Reports. The results of the study indicate that the performance of contractors in the Wonogiri and Surakarta areas has a positive SV value, meaning the project is running faster than the planned schedule, while the SPI (Schedule Performance Index) value is above 1, this indicates that they are able to complete the project in a more efficient time compared to the plan. Meanwhile, the performance of contractors in the Karanganyar area shows a negative SV value, meaning the project is experiencing delays where the work completed is less than the initial plan. The SPI (Schedule Performance Index) value in the Karanganyar area is equal to 1, this indicates that even though the project is experiencing delays, there is room for improvement in the efficiency of work completion.
STUDI PRILAKU BERKENDARA DI PERLINTASAN KERETA API NGROMBO PURWODADI Ristanto, Iwan; Supriyanto, Rahmat; Safarizki, Hendramawat Aski
E-Jurnal SPIRIT PRO PATRIA Vol 10 No 1: Maret 2024
Publisher : Lembaga Penelitian dan Pengabdian Masyarakat / Narotama University Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29138/spirit.v8i1.2135

Abstract

Sebagai salah satu moda angkutan massal yang banyak diminati oleh masyarakat, kereta api dalam operasionalnya tidak dapat dihindari bila jalan relnya pasti bersinggungan dengan jalan umum. Tak terkecuali jalur kereta api yang datang dan berangkat dari stasiun Ngrombo Purwodadi yang bersinggungan dengan jalan Solo- Purwodadi. Kelancaran operasional kereta api dan konflik kelancaran lalu lintas jalan Solo- Purwodadi berkumpul menjadi satu simpul di perlintasan kereta api jalan Solo- Purwodadi. Perkembangan pembangunan dan pertumbuhan penduduk di sekitar rel dan perlintasan jalan Solo- Purwodadi muncul karena tuntutan ekonomi masyarakat. Jalan Solo- Purwodadi sendiri merupakanjalan akses masuk Kota Purwodadi sekaligus jalan antar propinsi yang memiliki nilai ekonomi yang potensial. Dengan meningkatnya permintaan transportasi antar kota dengan menggunakan kereta api maka berdampak pada penambahan jadwal operasional kereta dan berefek pula pada kemacetan jalan Solo- Purwodadi karena seringnya kereta api yang melintas. Tujuan dari studi ini adalah untuk mengetahui tingkat keselamatan dan keamanan di perlintasan jalan kereta api dengan jalan Solo- Purwodadi Kabupaten Grobogan, mendapatkan informasi yang berkaitan dengan Perilakau berkendara di perlintasan kereta api jalan Solo- Purwodadi, dan mengidentifikasi kebutuhan infrastruktur keselamatan dan keamanan di perlintasan kereta api jalan Solo- Purwodadi. Manfaat lain yang bisa diambil dari studi ini diantaranya sebagai masukan bagi pihak-pihak terkait dalam membuat desain perlintasan jalan Solo- Purwodadi yang sesuai dengan kondisi dan situasi lingkungan setempat serta upaya-upaya untuk meminimalkan kecelakaan transportasi akibat perilaku berkendara yang kurang disiplin di perlintasan jalan kereta api jalan Solo- Purwodadi.Metode yang digunakan adalah dengan pengamatan langsung kelokasi yaitu ke perlintasan kereta Ngrombo ruas jalan Solo- Purwodadi dengan mencatat perilaku berkendara yang di kelompokan menjadi tiga katagori yaitu menerobor pintu perlintasan, melanggar marka jalan dan merebor arus lalu lintas.Dari data yang ada dapat disimpulkan bahwa kendaraan yang paling banyak melanggar adalah sepeda motor yaitu menggunakan lajur kendaraan arah yang berlawanan sebanyak 110 kendaraan sepeda motor.
PAVING BLOCK RAMAH LINGKUNGAN DARI LIMBAH PLASTIK POLYETHYLENE TEREPHTHALATE (PET) Retno Widya Nengsih; Hendramawat Aski Savariski; Iwan Ristanto
Jurnal Teknik Sipil Vol 9 No 2 (2025): Jurnal Gradasi Teknik Sipil - Desember 2025
Publisher : P3M Politeknik Negeri Banjarmasin

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31961/gradasi.v9i2.2604

Abstract

Dengan meningkatnya volume limbah plastik yang sulit terdegradasi, diperlukan solusi inovatif untuk meminimalkan dampak negatifnya terhadap lingkungan. Limbah plastik, terutama jenis Polyethylene Terephthalate (PET), telah menjadi salah satu penyumbang utama pencemaran lingkungan, sehingga penanganannya menjadi sangat penting. Penelitian ini berfokus pada pengembangan paving block sebagai material alternatif yang lebih berkelanjutan. Metode yang digunakan dalam penelitian ini adalah eksperimen dan pengembangan.  Variasi kadar plastik PET yang digunakan adalah 40%, 50%, dan 60%, yang diuji sesuai dengan standar SNI 03-0691-1996. Hasil dari penelitian ini menunjukkan bahwa paving block dengan kadar plastik 50% memiliki rata-rata kuat tekan tertinggi sebesar 5,20 MPa 6,56 MPa pada paving block inovasi yang mengandung 60% plastik memiliki kuat tekan rata-rata terendah sebesar 3,54 MPa. Daya serap air pada paving block dengan plastik PET berkisar antara 0,7% hingga 1,6%, jauh lebih rendah dibandingkan dengan paving block konvensional. Penelitian ini memberikan kontribusi penting terhadap pengembangan material konstruksi yang ramah lingkungan, mengurangi sampah plastik dan menghasilkan paving block berkualitas.
Analysis Index of Retained Strenght on AC-WC Asphalt Mixture with the Addition of Cigarette Filter Waste as an Alternative for Asphalt Modification Arifudin, Rahmat; Pristyawati, Tantin; Ristanto, Iwan
JMPM (Jurnal Material dan Proses Manufaktur) Vol. 8 No. 2 (2024): December
Publisher : Universitas Muhammadiyah Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18196/jmpm.v8i2.23832

Abstract

In order to provide an alternative asphalt mixture that is more durable, various efforts have been made to improve the quality of asphalt, therefore research is needed on polymer modified asphalt by replacing some of the asphalt with cigarette filter waste. In this study, cigarette filter waste was substituted into asphalt with proportions of 2%, 5%, and 8%. The purpose of this study was to determine the percentage of cigarette filter waste that affects the AC-WC mixture based on marshall characteristics and residual stability. The optimum asphalt content (KAO) used was 5.1%, with the results showing that the addition of cigarette filter waste affected the marshall characteristic values, namely the specific gravity value, Voids Filled with Asphalt (VFA), and the highest stability was at a variation of 2%, while the Voids in Mix (VIM), Void in Mineral Aggregate (VMA), and the highest flow. were at a variation of 8%. The residual stability index test showed that water affected the durability of the AC-WC mixture, as evidenced by the highest value in the 24-hour immersion variation with a cigarette filter content of 2% which decreased with increasing immersion time. The addition of cigarette filter waste into the AC-WC mixture has met the Bina Marga Specifications in the Marshall characteristic test, but the change in the residual stability index was only at a soaking time of 24 hours, while for other periods it did not comply with the Bina Marga specifications.
Thermoplastic Waste Composite Brick As An Environmentally Friendly Material Safarizki, Hendramawat Aski; Ristanto, Iwan; Sangadji, Senot; Karno, Muhammad Febrialdi; Dewi, Amelia Putri
ASTONJADRO Vol. 15 No. 1 (2026): ASTONJADRO
Publisher : Universitas Ibn Khaldun Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32832/astonjadro.v15i1.21105

Abstract

The background of this research is that plastic waste is abundantly available around us and has not been optimally utilized. Pedestrian which is also the right of pedestrians with disabilities has not been well organized in Indonesia. The use of plastic waste materials is an alternative to solving environmental problems. The utilization of plastic as a substitute for cement will also reduce the carbon effect of cement as a building material. With its light weight when compared to disabled terrazzo tiles on the market, it is hoped that it can facilitate the application of smart pedestrian blocks as pedestrian paths and disabilities. The purpose of this research is the utilization of plastic waste as used as composite thermoplastic waste brick as well as an alternative eco friendly material. The experimental method used normal paving, 45% plastic waste, 55% plastic waste, and 65% plastic waste. The test results show that the average compressive strength for paving with 45% plastic waste has a compressive strength of 9.16 MPa higher than normal paving which is only 8.56 MPa. This shows that the use of 45% plastic waste as an effective substitute for cement in paving is also an environmentally friendly solution. In addition to reducing plastic waste, it also reduces the need for cement.
Co-Authors Agung Wibawa, Satria Agus, Agus Puji Utomo Annisa Azhar Firdausi Annisa Azhar Firdausi Firdausi Arifudin, Rahmat Ayu Septiana, Dellia Badu, Muswarjodin Binan Restu Ajie Burhanudin, Faisal Devi, Rida Handiana Dewi, Amelia Putri Djatmiko Hidajat Faisal Burhanudin Hendramawat Aski Safarizki Hendramawat Aski Safarizki Hendramawat Aski Savariski Karno, Muhammad Febrialdi Much Yusuf Widiyanto Novianto Setiawan Nugroho, Aziz Widhi Rahmatul Ahya Retno Widya Nengsih Rian Prasetyo Rusmini Rusmini Satria Agung Wibawa Satria Agung Wibawa Senot Sangadji, Senot Sodikin Sodikin Sodikin Sri Lestari, Mathilda SUPRAPTO Supriyanto, Rahmat Tantin Tantin Pristyawati Tri Nalasrsih, Retno Wahid, Muhammad Shidiq Abdu Rahman Wibawa, Satria Agung