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Thermodynamic Study of Palm Kernel Shell Gasification for Aggregate Heating in an Asphalt Mixing Plant Putro, Firman Asto; Pranolo, Sunu Herwi; Waluyo, Joko; Setyawan, Ary
International Journal of Renewable Energy Development Vol 9, No 2 (2020): July 2020
Publisher : Center of Biomass & Renewable Energy, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/ijred.9.2.311-317

Abstract

This study evaluated thermodynamically the performance of conversion of palm kernel shells into combustible gas through gasification technology for aggregate heating in a hot-mixed asphalt production plant by developing a thermodynamic model using licensed Aspen Plus v.11 software. The effects of the equivalence ratio (ER) in the gasification process and the amount of combustion air to combustible gas to attain the required aggregate temperature were investigated. The thermodynamic model showed a good agreement with the experimental results based H2 and CO contain in producer gas which provided by maximum root mean square errors value of 8.82 and 6.42 respectively. Gasification of 30–35 kg of palm kernel shells in a fixed-bed gasifier reactor using air as a gasifying agent at an ER of 0.325–0.350 generated gaseous fuel for heating 1 ton of aggregate to a temperature of 180–200°C with combustion excess air 10%–20%. 
Optimasi Waktu dan Biaya dengan Metode Time Cost Trade Off pada Pekerjaan Pipa Jaringan Distribusi Utama Dagen – Plesungan (Studi Kasus: Proyek Spam Wosusokas Segmen 4) Dyah Ratih Kusumastuti; Setyawan, Ary; Setiono, Setiono
Sustainable Civil Building Management and Engineering Journal Vol. 1 No. 3 (2024): July
Publisher : Indonesian Journal Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47134/scbmej.v1i3.2769

Abstract

Keberhasilan suatu proyek konstruksi ditentukan oleh mutu, biaya dan juga durasi proyek. Perhitungan yang salah pada salah satu aspek tersebut dapat menyebabkan kerugian. Maka, diperlukan pengendalian proyek yang tepat supaya proyek dapat berjalan dengan lancar dan tepat waktu. Salah satu upaya untuk mengatasi masalah tersebut yaitu dengan dilakukannya optimasi waktu dan biaya atau yang disebut crashing. Pada penelitian ini akan dilakukan optimasi waktu dan biaya proyek dengan metode Time Cost Trade Off dengan bantuan aplikasi Primavera P6. Skenario yang digunakan ada 6, yaitu penambahan jam kerja (lembur) 1 jam kerja hingga 4 jam kerja dan penambahan tenaga kerja 1 pekerja hingga 2 pekerja. Hasil optimasi yang dilakukan pada penelitian ini yaitu pada skenario 1 (penambahan 1 jam kerja) adalah 390 hari dengan biaya Rp71.651.956.512,45 dan lebih cepat 31 hari dari durasi normal 421 hari dan penurunan biaya dari biaya normal senilai Rp 71.840.063.197,01, pada skenario 2 (penambahan 2 jam kerja) adalah 363 hari dengan biaya Rp71.499.850.238,61, pada skenario 3 (penambahan 3 jam kerja) adalah 340 hari dengan biaya Rp71.370.287.273,16, pada skenario 4 (penambahan 4 jam kerja) adalah 324 hari dengan biaya Rp71.287.367.745,46, pada skenario 5 (penambahan 1 pekerja) adalah 339 hari dengan biaya Rp71.327.806.536,75, serta pada skenario 6 (penambahan 2 pekerja) adalah 311 hari dengan biaya Rp71.120.938.849,58. Skenario yang paling efisien yaitu dengan menggunakan skenario 6 yaitu penambahan tenaga kerja sebanyak dua pekerja karena mengurai durasi keseluruhan sebesar 110 hari dengan penurunan biaya sebesar Rp719.124.347,42.
Implementation Of Value Engineering Using Analytical Hierarchy Process (Ahp) (Case Study: Flyover Construction Project Of Jpl 64 Km 38+897 Across Surabaya – Solo) Naufal Akbar Muzaky; Fajar Sri Handayani; Ary Setyawan
Sustainable Civil Building Management and Engineering Journal Vol. 1 No. 4 (2024): October
Publisher : Indonesian Journal Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47134/scbmej.v1i4.3077

Abstract

The development of infrastructure development in Indonesia is being intensively carried out by the government to meet the needs of the community. Infrastructure development is often faced with various obstacles that can disrupt the project. To ensure the sustainability of the project, it is necessary to apply Value Engineering to identify opportunities for cost savings and solve problems so as to get maximum value without reducing project quality. The purpose of the research is to analyze the structure, determine the alternative, types and construction methods chosen to make the project cost efficient. Value Engineering is applied to the foundation and deck slab work of the Fly Over Replacement Construction Project JPL 64 Km 38-897 Lintas Surabaya-Solo using the AHP method with the help of expert choice. Based on the results of the Value Engineering analysis, an alternative bore pile d-120 foundation was obtained in the foundation work and a change in the cantilever elbow support method in the deck slab work. The cost efficiency results obtained after Value Engineering amounted to Rp15,108,214,225 or 10%.
Time and Cost Optimization Analysis of Reservoir Building Work in Wosusokas Regional SPAM Project using Time Cost Trade Off Method Maharani, Devita Putri; Setyawan, Ary; Setiono, Setiono
Sustainable Civil Building Management and Engineering Journal Vol. 1 No. 4 (2024): October
Publisher : Indonesian Journal Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47134/scbmej.v1i4.3134

Abstract

Cost and time optimization is an important aspect of project management that aims to achieve optimal efficiency in the use of resources. Time Cost Trade Off (TCTO) method is often used to manage the relationship between time and cost in project completion. This research analyzes cost and time op-timization on construction projects using Primavera P6 software. In optimi-zation with the addition of working hours, 4 alternatives were carried out, namely the addition of 1 hour, 2 hours, 3 hours, and 4 hours of work, the re-sults obtained were a shorter duration but the total cost was getting bigger. Whereas in the alternative of adding workers as many as 1 worker and 2 workers, the optimization results obtained a shorter duration and a reduced total cost. Thus, the TCTO method and the use of Primavera P6 proved ef-fective in identifying the most efficient optimization strategy to achieve pro-ject success on time and within budget.
PENGARUH PEMBANGUNAN TOL SOLO-YOGYA TERHADAP KINERJA SIMPANG BERSINYAL Hermani, Wahyuningsih Tri; Setyawan, Ary; Yulianto, Budi; Hanung Triyono, AR.
Jurnal Jalan Jembatan Vol 41 No 1 (2024)
Publisher : Direktorat Bina Teknik Jalan dan Jembatan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58499/jatan.v41i1.1197

Abstract

The construction of the Solo-Yogyakarta toll road is part of the National Strategic Project. At the construction stage, toll road infrastructure needs to assess the impact of traffic on surrounding roads and intersections, considering the many security and safety problems. Road performance evaluation is critical to overcome traffic problems that may arise during toll road operations in the future. This research aims to calculate traffic performance at signalized intersections, which are influenced by the construction of the Solo-Yogya toll road. The locations studied were four signalized intersections on the Solo-Yogya toll road using primary data on the number of vehicles, travel time, and vehicle speed. The performance of signalized intersections is calculated using the 2023 Indonesian Road Capacity Guidelines, while the distribution of future movements is carried out using JICA STRADA Software and the Gravity model with applicable toll road rates. The traffic growth is 5.6% per year, according to data on the number of vehicles in Jawa Tengah Dalam Angka. The performance of signalized intersections after constructing the Solo-Yogya toll road in 2022 has an average Volume Capacity Ratio (VCR) value of 0.78. In 2046, it will be 1.47. At intersection-3 Bangak Barat and intersection-4 Condong Catur, building an Interchange before 2032 is recommended. The recommendation is to reduce vehicle delays, as in 2032, the VCR value will be more than 0.8. The study gives insight into the combined methods of forecasting traffic growth on signalized intersections near freeways. Keywords: traffic performance, JICA STRADA, gravity model, signalized intersection capacity, APILL
ANALISIS RISIKO PELAKSANAAN PEMBANGUNAN PADA PROYEK KONSTRUKSI POLITEKNIK MARITIM NEGERI INDONESIA Muhammad Wildan Ma’arif; Ary Setyawan; Koosdaryani Soeryodarundio
Kohesi: Jurnal Sains dan Teknologi Vol. 5 No. 6 (2024): Kohesi: Jurnal Sains dan Teknologi
Publisher : CV SWA Anugerah

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.3785/kohesi.v5i6.8177

Abstract

Pelaksanaan proyek konstruksi selalu dihadapkan dengan berbagai risiko yang dapat mengganggu waktu, biaya, dan mutu dalam pelaksanaan proyek. Risiko dapat timbul pada setiap kegiatan atau pekerjaan dalam proyek konstruksi, akan tetapi tingkat risiko dalam setiap pekerjaan sangat bervariasi. Maka diperlukan manajemen risiko untuk mengurangi dampak yang merugikan dalam mencapai tujuan proyek. Tujuan dari penelitian ini adalah untuk menentukan risiko yang paling berpengaruh terhadap waktu, biaya, dan mutu pada proyek pembangunan kampus baru Polimarin, serta mengidentifikasi strategi untuk mengurangi risiko yang terjadi. Penelitian ini dilakukan dengan cara survey menggunakan kuisioner terhadap 36 responden. Metode analisis dimulai dari identifikasi variabel risiko berdasarkan studi literatur. Selanjutnya dilakukan uji relevansi variabel risiko menggunakan Skala Guttman. analisis variabel risiko dengan metode severity indeks, analisis tingkat risiko menggunakan tabel matriks probabilitas dan dampak, dan yang terakhir menentukan respon risiko yang tepat terhadap variabel risiko yang dominan. Hasil Penelitian menunjukkan bahwa (1) Didapatkan 3 variabel risiko dominan terhadap aspek waktu, 2 variabel risiko dominan terhadap aspek biaya, dan 4 variabel risiko dominan terhadap aspek mutu, (2) Didapatkan 9 strategi penanganan risiko yang dapat dilakukan kontraktor terhadap variabel-variabel risiko yang telah dianalisis.
Analisis Akar Masalah Keterlambatan Pengerjaan pada Proyek Konstruksi Politeknik Maritim Negeri Indonesia Naufal Iman Adzhan; Ary Setyawan; Koosdaryani Soeryodarundio
Venus: Jurnal Publikasi Rumpun Ilmu Teknik  Vol. 2 No. 6 (2024): Desember : Venus: Jurnal Publikasi Rumpun Ilmu Teknik
Publisher : Asosiasi Riset Ilmu Teknik Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61132/venus.v2i6.647

Abstract

The construction industry in Indonesia is growing rapidly, playing a crucial role in the country's economic, political, and social development. However, alongside this rapid growth, issues such as project delays are inevitable. The construction project of the Indonesian Maritime Polytechnic, for instance, has experienced significant delays, which can lead to increased costs, waste of human resources, and disputes among the involved parties. Understanding the primary causes of these delays is essential for developing effective strategies to avoid future delays. This analysis uses both qualitative and quantitative methods to identify the root causes of delays. Data was collected through surveys of respondents involved in the project, including project managers, field staff, and consultants. The analyzed causes of delays include insufficient funding, increases in raw material costs, additional costs, contract document errors, poor communication, and slow decision-making. To minimize delays and their impacts, several recommendations can be made: effective strategic planning, improved communication, increased staff, accurate initial cost estimates, and good management. By implementing these recommendations, the Indonesian Maritime Polytechnic construction project can be completed more effectively and efficiently, and future delays can be avoided.
Analisis Perbandingan Produktivitas dan Value Engineering pada Pelaksanaan Pekerjaan Pemasangan Bata Merah dan Bata Ringan: (Studi Kasus : Proyek Perumahan Shopee Semanggi) Ivan Fadhila; Ary Setyawan; Koosdaryani Soeryodarundio
Konstruksi: Publikasi Ilmu Teknik, Perencanaan Tata Ruang dan Teknik Sipil Vol. 3 No. 2 (2025): April: Konstruksi: Publikasi Ilmu Teknik, Perencanaan Tata Ruang dan Teknik Sip
Publisher : Asosiasi Riset Ilmu Teknik Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61132/konstruksi.v3i2.776

Abstract

The selection of building materials is vital for the development of high-quality infrastructure and residential projects. The two most commonly used building materials are red bricks and lightweight bricks. This study compares the productivity and cost of red brick and lightweight brick production and installation in construction projects. Data were obtained through direct observation, worker interviews, and Value Engineering analysis on the Shopee Semanggi Housing Project, which consists of 136 houses with a total estimated budget (RAB) of Rp10.93 billion. The results show that red brick installation productivity is 3.3 m²/day, while lightweight brick installation reaches 17.9 m²/day. The installation cost for red bricks is Rp1.52 billion for 12,786.78 m², compared to Rp1.62 billion for lightweight bricks for the same area. This study provides guidance for selecting building materials based on time and cost efficiency.
Implementasi Metode Value Engineering Pada Pekerjaan Proyek Konstruksi Bangunan Gedung Tiga Lantai (Studi Kasus: Gedung Gereja Isa Almasih) Nandiwardhana, Dionisius Pramudita; Setiono, Setiono; Setyawan, Ary
Jurnal Pendidikan Tambusai Vol. 9 No. 2 (2025): Agustus
Publisher : LPPM Universitas Pahlawan Tuanku Tambusai, Riau, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/jptam.v9i2.26696

Abstract

Rekayasa nilai bertujuan mengidentifikasi cara menurunkan biaya produksi. Studi dilakukan pada pembangunan Gereja Isa Almasih (GIA) Magelang yang menghadapi kendala kapasitas ruang ibadah karena pertumbuhan jemaat. Proyek ini membutuhkan biaya besar, sehingga gereja sulit merencanakan kegiatan perayaan ibadah. Penelitian bertujuan mengoptimalkan biaya pembangunan dengan mutu yang setara atau lebih baik, melalui tahapan informasi, kreatif, analisis, dan perencanaan. Data diperoleh dari pihak kontraktor, catatan proyek, dan studi pustaka. Metode analisis menggunakan Value Engineering (VE) dengan pendekatan sistematis dan terorganisir. Penelitian yang dilakukan terbagi dalam beberapa fase tahapan. Tahapan-tahapan kerja ini meliputi Tahapan Informasi, Tahapan Kreatif, Tahapan Analisis, Tahapan Perencanaan. Fokus penelitian adalah pekerjaan plat lantai, membandingkan plat beton konvensional, plat beton pracetak dan plat bondek sebagai alternatifnya. Analisis difokuskan pada biaya, durasi pekerjaan, dan mutu pekerjaan. Plat konvensional membutuhkan biaya sebesar Rp131.450.021, plat pracetak sebesar Rp 175.127.434, dan plat bondek sebesar Rp128.951.416. Plat konvensional membutuhkan durasi pekerjaan selama 26 hari, plat pracetak selama 17 hari, dan plat bondek selama 22 hari. Kemudian dilakukan analisis mutu untuk kontrol kualitas desain alternatif yang diajukan. Analisis menunjukkan plat pracetak mempercepat durasi tetapi memiliki biaya lebih mahal, sementara plat bondek menekan biaya dan waktu. Biaya pekerjaan plat lantai pada desain awal adalah senilai Rp 131.450.021 dari total biaya proyek sebesar Rp 4.163.782.961. Biaya pekerjaan plat lantai pada alternatif desain yang telah diefisienkan menggunakan metode Value Engineering adalah senilai Rp 128.951.416 dari biaya desain proyek sebelumnya sebesar Rp 131.450.021. Selisih biaya pekerjaannya adalah senilai Rp 2.498.605 atau 1,9% lebih rendah dari biaya proyek awal.
Simulation of Dungdo Reservoir Water Distribution for Irrigation and Raw Water Pratiwi, Sekar Arum; Sobriyah, Sobriyah; Setyawan, Ary
Journal La Multiapp Vol. 6 No. 4 (2025): Journal La Multiapp
Publisher : Newinera Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37899/journallamultiapp.v6i4.2287

Abstract

Small reservoirs are structures that function to accommodate excess water during the rainy season so that it can be used during the dry season. Dungdo Reservoir is expected to help meet the needs of irrigation water and raw water for livestock in the surrounding community. Water distribution simulation aims to optimize water availability efficiently and evenly. The methodology used includes water balance analysis based on rainfall data, evapotranspiration, inflow, and changes in reservoir capacity. Irrigation water requirements are calculated based on the crop coefficient (Kc), while raw water requirements are calculated based on the number of livestock. Based on the simulation results with the existing planting pattern with an irrigation area of 171.60 Ha, it shows that the average water requirement is 279605.66 m3/15 days, while the reservoir's capacity to provide water is 53135.20 m3/15 days. The simulation results show that Dungdo Reservoir has not been able to optimally meet irrigation water and raw water needs.
Co-Authors A.A. Ketut Agung Cahyawan W Abdallh Lhwaint, Abdallh Abdulhakim Mustafa Elshawesh Abdurrohim, Yahya Aditya Martien Nugroho Aditya Permana Aditya Permana Aditya Permana Agus Rianto AGUS SUMARSONO Agus Wahyudi Ahmad Alhashmi Salam Abuseta Ahmad Baihaqi Ahsan Musthafa Shidiq Akhmad, Amirudin Aloysius Ardy Widya Pradana Amirudin Akhmad Anang Prasetyo Andrean, Regi Andriani, Rizki Mega Andyas Nur Wicaksono Annissa Latifaturrohmah Ardhyanto, Dhani Aredha Putra, Himawan Nur Arif Budiarto Arifin, Muhammad Adam Arya Surya Baskara Asep Yudha Wirajaya Baihaqi, Ahmad Baktiar Widhianto Bambang Setiawan Bima Wirawan Budi Widhiharjo Budi Yulianto Daryanto Ari Prabowo Dewi Ismoyowati, Dewi Dewi Widowati Diar Kurnia Sari Dicky Faisal Djoko Sarwono Djoko Sarwono Djumari Djumari Djumari Djumari Dyah Ratih Kusumastuti Edo Rizkiawan Efazeta Fazafaza Eka Nugraha, Sadu Januar Emha, Fieza Abraham Fadholah, Rusdi Faisal, Dicky Fajar Sri Handayani Fakhri Muhammad Fakhri Muhammad, Fakhri Faraj Muftah M Akash Fariza, Muhammad Febrianto, Nugroho Febriayani, Ory Fieza Abraham Emha Fouad M. Ali Bin Ghasheir Fouad M. Ali Bin Ghasheir, Fouad Gabriel Kusumo Hendrianto Galih Fajar Sujatmiko Hafid Riyan Purnomo Hamduna, Sausan Ismu Handayani, Fajar Sri Hanung Triyono, AR. Hendrianto, Gabriel Kusumo Hery Widijanto Hidayat, Haris Himawan Nur Aredha Putra Ibnu Setiadi Indra Iskandar Indradewa Andrianto Putra Irfansyah, Permana Adi Irvan Kusdiantoro Iskandar, Indra Islamia, Adellona Merry Isna Aulia Adzani Isna Aulia Salsabila Ivan Fadhila Izzudin Izzudin Jamhari Jamhari Jolis Nainggolan Junaidi Junaidi Kinanti, Arrum Koosdaryani Soeryodarundio Kurnia W., Alif Kusno Adi Sambowo Kusno Adi Sambowo Kusumaningtyas, Asteria Nadhia Labib, Naufal Makarim Legowo, Slamet Jauhari Legowo, Slamet Jauhari Leny Noviani Maenkar, Verry Mafruhah, Izza Maharani, Devita Putri Maharani, Sita Maharani Mahardhika Yusuf Maharyono, Prima Anugerah Mamok Suprapto Manuel Simeon Marpaung Marpaung, Manuel Simeon Maulana Andhika Pratama Ilyas Michael Michael Miftahul Janah Mohammed A. A. Almahdi, Mohammed Mohammed Almahdi Mohmed Alshekh A. M. Hmade1, Mohmed Alshekh Muhammad Ardian, Muhammad Muhammad Caesayuda Wijaya Muhammad Fachri Nasution Muhammad Ilham Nur Fauzan Muhammad Wildan Ma’arif Mutia Ramadani Hidayah Nailina Safira Cinta Karinova Nandiwardhana, Dionisius Pramudita Nasution, Muhammad Fachri Naufal Akbar Muzaky Naufal Iman Adzhan Naufal Makarim Labib Niken Silmi Surjandari Nugraheni, Novia Ayu Nugraheni, Novia Ayu Nugroho Febrianto Nugroho, Aditya Martien Nurul Istiqomah Omar Muhamed Kabbash Omar Muhamed Kabbash1, Omar Muhamed P.Wulan, Cahya Esther Perdana, Dian Noor Citra Permana Adi Irfansyah Pinasthi Nugroho Prabowo, Daryanto Ari Pramesti, Florentina Pungky Pramesti, Florentina Pungky Pramesti, Pungky Pramono, Pilang Maharani Pranolo, Sunu Herwi Prasetyo, Handy Pratama Ilyas, Maulana Andhika Pratama, Daniel Aviyanto Pratiwi, Sekar Arum Pratomo, Eko Putro Pratomo, Eko Putro Pungky Slamet Wisnu Kusuma Purnomo, Hafid Riyan Putro, Firman Asto Raditya Dwi Anggara Ramadhana, Muhammad Regi Andrean Risal Rayhan Farihat Rizki Mega Andriani Rizkianto, Tito Rizkiawan, Edo Rochim, Rochim Rochmadi, Andi Rusadi, Indra Putra Rusadi, Indra Putra Rusdi Fadholah Ryan Kurniawan Ryan Kurniawan Safe'i, Kholid Ma'sum Santara, Satria Lima Sanusi Sanusi SANUSI SANUSI Sari, Diar Kurnia Sari, Fitria Munita Sari, Fitria Munita Sarjiyanto Satria Lima Santara SATRIYAS ILYAS Setiadi, Ibnu Setiono Setiono Setyowati, Sutari Setyowati, Sutari Shidiq, Ahsan Musthafa Sholihin As’ad Sistra, Mawid Dwi Slamet Jauhari Legowo Sobriyah Sobriyah Soniel Zai, Aroman Karsensyah Sri Widyastuti Stefanus Adi Kristiawan Sudarsana Sudiyono Sudiyono Sugiyarto Sugiyarto Sugiyarto Sugiyarto Sujatmiko, Galih Fajar Sukmana, Salvatore Sumarsono, Agus Sumarsono, Agus Supriadi, Andy Supriadi, Andy Suryoaji, Yusuf Suryoto Suryoto Syafina Anindiyasari Syukriyya Zuhrotul Endang Purwaningsih Thathit Bimo Luhung, Thathit Bimo Tito Rizkianto Tora K., W. Alpha Tuhana Verry Maenkar Wahyuningsih Tri Hermani, Wahyuningsih Tri Wibowo Wibowo Wibowo, Wibowo - Wicaksono, Andyas Nur Wicaksono, Anjar Wido Widhianto, Baktiar Widhiharjo, Budi Widya Pradana, Aloysius Ardy Wijaya, Muhammad Caesayuda Winny Astuti Wiranto, Edi Wiranto, Edi Wirawan, Bima Yahya Abdurrohim Yhudianto, Bondan Yhudianto, Bondan Yudhi Prasetyo, Rhobertus Mahadi Yudhi Prasetyo, Rhobertus Mahadi Yudi Rinanto Yusep Purwana Muslih Yusuf Suryoaji Yusuf, Mahardhika Zulianto, Yusuf Zulianto, Yusuf ⁠Arifin Irkham Wibawa ⁠Rifqi Afifan