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All Journal G-Tech : Jurnal Teknologi Terapan Indonesian Community Journal JOMPA ABDI: Jurnal Pengabdian Masyarakat JUSTER: Jurnal Sains dan Terapan Jurnal Pengabdian Masyarakat Bangsa Clean Energy and Smart Technology Masyarakat: Jurnal Pengabdian
Oggi Heicqal Ardian
Institut Teknologi Nasional Yogyakarta
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Konsentrasi Sedimen Suspensi Rata-Rata Kedalaman Berdasarkan Pengukuran 1, 2, dan 3 Titk Pada Aliran Dipercepat Anggi Hermawan; Erwin Nur Afiato; Oggi Heicqal Ardian
JUSTER : Jurnal Sains dan Terapan Vol. 2 No. 2 (2023): JUSTER: Jurnal Sains dan Terapan
Publisher : Jompa Research and Development

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Proses pengambilan sampel untuk sebaran konsentrasi sedimen tersuspensi di lapangan seringkali tidak dapat dilakukan sesuai dengan standar pengambilan sampel yang benar karena banyaknya kendala yang dihadapi di lapangan. Kendala tersebut akan mengakibatkan ketidakakuratan debit sedimen tersuspensi. Bagaimana dan di lokasi mana pengambilan sampel dilakukan mungkin perlu dipertimbangkan karena berbagai kendala pada pengambilan sampel di lapangan. Penelitian ini menggunakan metode point integrated sampling methode yang dianggap lebih akurat dibandingkan depth-integrated sampling. namun, data profil konsentrasi sedimen tersuspensi dalam jumlah besar diperlukan pada kedalaman keseluruhan, yang berarti bahwa metode tersebut membutuhkan lebih banyak waktu dan biaya untuk mengumpulkan data pengambilan sampel. Nilai konsentrasi sedimen tersuspensi rata-rata kedalaman yang ditentukan menggunakan Persamaan 9, 10, dan 11 masih dapat diandalkan karena memiliki nilai faktor koreksi mendekati 1 (satu), Cte1 @Cte2 @Cte3 @1.
Penentuan Daerah Terdampak Kekeringan dan Potensi Air Kabupaten Gunung Kidul Tahun 2023 Sari, Sely Novita; Hermawan, Anggi; Maulana, Rizal; Ardian, Oggi Heicqal
Jurnal Pengabdian Masyarakat Bangsa Vol. 1 No. 12 (2024): Februari
Publisher : Amirul Bangun Bangsa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59837/jpmba.v1i12.729

Abstract

Kabupaten Gunung Kidul yang terletak di Provinsi Daerah Istimewa Yogyakarta, memiliki karakteristik geografis dan iklim yang dapat memengaruhi ketersediaan air untuk keperluan domestik, pertanian, dan industri. Kegiatan Abdimas ini bertujuan untuk menentukan daerah terdampak kekeringan dan potensi air di Kabupaten Gunung Kidul pada tahun 2023. Kegiatan ini memberikan landasan untuk merumuskan kebijakan pengelolaan air yang berkelanjutan, mengidentifikasi daerah rentan terhadap kekeringan, dan merencanakan upaya mitigasi yang tepat untuk menjaga keberlanjutan sumber daya air di Kabupaten Gunung Kidul pada tahun 2023 dan masa depan. Melalui metode survei lapangan, analisis iklim, dan evaluasi penggunaan lahan, penelitian ini mengidentifikasi 11 desa yang terdampak kekeringan. Badan Penanggulangan Bencana Daerah (BPBD) Gunung Kidul telah berupaya mengatasi krisis air dengan menyediakan total volume dropping air bersih sebesar 16.935.000 liter. Selain itu, ditemukan 33 embung berpotensi sebagai sumber air tambahan di musim kemarau, dan terdapat 74 titik potensi sumur bor untuk memperluas akses air bersih bagi masyarakat.
Penilaian Pelaksanaan Pemeliharaan dan Perawatan Bangunan Hotel di Sleman Yogyakarta Sely Novita Sari; Rizal Maulana; Anggi Hermawan; Oggi Heicqal Ardian
G-Tech: Jurnal Teknologi Terapan Vol 8 No 3 (2024): G-Tech, Vol. 8 No. 3 Juli 2024
Publisher : Universitas Islam Raden Rahmat, Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33379/gtech.v8i3.4556

Abstract

The government has issued guidelines based on Minister of Public Works Regulation NO.24/PRT/M/2008 for the maintenance and care of buildings. These guidelines aim to reduce damage and issues in building construction in terms of quality, facilities, and safety, and to facilitate handling if damage occurs. Structural observation of buildings requires careful testing. This study evaluates the maintenance and care of buildings in accordance with these regulations. The results show that, out of six hotels inspected, the implementation of building maintenance reached 55.57%, while the implementation of building care reached 63.39%. This study helps assess the extent to which these guidelines are applied and understood in the field.
Pembuatan Peta Rawan Banjir Kabupaten Bantul Daerah Istimewa Yogyakarta Sely Novita Sari; Anggi Hermawan; Rizal Maulana; Oggi Heicqal Ardian
I-Com: Indonesian Community Journal Vol 4 No 4 (2024): I-Com: Indonesian Community Journal (Desember 2024)
Publisher : Fakultas Sains Dan Teknologi, Universitas Raden Rahmat Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.70609/icom.v4i4.5543

Abstract

Bantul Regency, located in the Special Region of Yogyakarta, is prone to flooding due to its lowland topography and suboptimal drainage systems. This community service project aims to create a flood hazard map to assist the Bantul Disaster Management Agency (BPBD) in identifying high-risk areas and planning preventive mitigation policies. The methods used include literature reviews, data collection from BBWS and BPBD, as well as field surveys. Flood data from the past five years was analyzed using Geographic Information System (GIS) technology to map flood-prone areas. The result is a detailed map highlighting flood-prone zones, which can be used for infrastructure planning and improving community preparedness. The conclusion of this project is the development of the Flood Hazard Map for Bantul Regency, Special Region of Yogyakarta. This map serves as an essential tool for disaster mitigation and development planning, with recommendations for regular data updates and community outreach efforts.
ABDIMAS: PEMBUATAN PETA KEKERINGAN KABUPATEN BANTUL DAERAH ISTIMEWA YOGYAKARTA Hermawan, Anggi; Sari, Sely Novita; Maulana, Rizal; Prastowo, Rizqi; Ardian, Oggi Heicqal
Masyarakat: Jurnal Pengabdian Vol. 1 No. 1 (2024)
Publisher : Yayasan Pendidikan Dan Pengembangan Harapan Ananda

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58740/m-jp.v1i1.193

Abstract

Kekeringan disebabkan oleh ketidakseimbangan hidrologi akibat distribusi hujan yang tidak merata, yang memengaruhi pasokan air. Kabupaten Bantul, DIY, sering mengalami kekeringan, terutama di kecamatan seperti Dlingo, Imogiri, Pajangan, Piyungan, dan Kasihan. Sekitar 2000 hektar lahan pertanian terancam kekeringan karena kurangnya irigasi selama musim kemarau. Kabupaten Bantul belum memiliki pemetaan daerah rawan kekeringan, yang penting bagi BPBD. Kegiatan abdimas ini bertujuan untuk membuat Peta Kekeringan Kabupaten Bantul DIY. Langkah awal mencakup studi pendahuluan untuk memahami iklim, pola kekeringan, dan dampaknya, serta mengidentifikasi data yang relevan. Pengumpulan data melibatkan akuisisi data iklim, hidrologi, dan curah hujan dengan kolaborasi lembaga terkait. Data dianalisis untuk mengidentifikasi pola kekeringan, dan digunakan dalam pemetaan dengan perangkat lunak GIS. Kegiatan ini menghasilkan Peta Kekeringan dan Potensi Sumber Air Kabupaten Bantul Tahun 2023. Implikasi Pembuatan peta tidak hanya menjadi alat visualisasi, tetapi juga menjadi landasan dalam manajemen bencana dan upaya mitigasi untuk Masyarakat sekitar.
Pembuatan Peta Infrastruktur Air dan Sumber Air Untuk Mitigasi Bencana Kekeringan Di Kecamatan Dlingo Kabupaten Bantul Hermawan, Anggi; Sari, Sely Novita; Maulana, Rizal; Ardian, Oggi Heicqal; Pratama, Bagus Gilang
Jompa Abdi: Jurnal Pengabdian Masyarakat Vol. 4 No. 1 (2025): Jompa Abdi: Jurnal Pengabdian Masyarakat
Publisher : Yayasan Jompa Research and Development

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.57218/jompaabdi.v4i1.1373

Abstract

Curah hujan yang tidak merata sepanjang tahun menjadi faktor utama dalam evaluasi risiko banjir di Kabupaten Bantul, yang belum memiliki pemetaan daerah rawan banjir sebagai dasar kebijakan BPBD. Oleh karena itu, kolaborasi antara ITNY dan BPBD Kabupaten Bantul dalam penyusunan Peta Rawan Banjir menjadi krusial untuk mendukung pengambilan keputusan berbasis data. Metode yang digunakan mencakup studi pendahuluan untuk memahami pola banjir dan dampaknya, pengumpulan data hidrologi dan curah hujan, serta analisis menggunakan perangkat lunak GIS. Peta ini diintegrasikan dengan data administrasi wilayah, topografi, dan infrastruktur air untuk menghasilkan informasi yang akurat dan komprehensif. Sebagai bagian dari upaya mitigasi, pembuatan peta potensi sumber air di Kecamatan Dlingo dengan teknologi GIS melalui ArcGIS 10.8 telah mengidentifikasi lokasi strategis seperti embung, mata air, dan sumur bor. Peta ini juga menyajikan data pendukung dalam bentuk tabel untuk mempermudah analisis dan perencanaan pengelolaan sumber daya air. Dengan metodologi berbasis GIS, peta ini menjadi alat yang informatif dan relevan bagi pihak berwenang serta masyarakat dalam mendukung pembangunan berkelanjutan dan mitigasi risiko bencana terkait air di Kabupaten Bantul.
Impacts of Land-Use Change on Runoff Oyo Downstream Sub-Watershed, Bantul Regency, Special Region of Yogyakarta Anggi Hermawan; Oggi Heicqal Ardian
G-Tech: Jurnal Teknologi Terapan Vol 9 No 2 (2025): G-Tech, Vol. 9 No. 2 April 2025
Publisher : Universitas Islam Raden Rahmat, Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.70609/gtech.v9i2.6766

Abstract

Land use changes from year to year have a significant impact on several flood disasters in the Oyo Downstream River. The purpose of this study was to calculate the amount of surface runoff in the Oyo Downstream Sub-watershed. Runoff discharge can be approximated using an empirical equation, namely by using the rational method. The amount of Runoff in the Oyo Downstream Sub-watershed is determined based on rainfall data for the last 10 years, topographic conditions and land cover conditions in the Sub-watershed area. Based on Google satellite aerial photo images in 2007, 2010, and 2022, changes in land use in the Oyo Downstream Sub-watershed can be seen. The land cover type classification process uses the supervised periodic satellite imagery method, where the results of the classification of each type of land use can be seen in the percentage of land use changes. Based on the results of satellite image analysis, there has been a significant reduction in the area of ​​land cover in forests and trees, namely 28.4% from 2007 to 2023. In contrast to settlements and open land which experienced an increase of 40% and 60% respectively. The results of the calculation of direct runoff discharge in each land cover condition show that there was an increase of 11% from 2007 to 2010, and an increase of 15% from 2010 to 2022. This condition causes flooding in several locations in the Oyo Downstream Sub-Watershed area due to overflowing rivers during the rainy season. In addition, several locations also experience inundation due to poor drainage systems causing rainwater runoff to not be able to flow into the water body/river area.
Perbandingan Metode Critical Path Method (CPM) dan Precedence Diagram Method (PDM) Pada Pembangunan Rumah Tipe 36 Luna Amadea Maharani Sudjatmiko; Sely Novita Sari; Oggi Heicqal Ardian
JUSTER : Jurnal Sains dan Terapan Vol. 5 No. 1 (2026): JUSTER: Jurnal Sains dan Terapan
Publisher : Jompa Research and Development

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.57218/juster.v5i1.2310

Abstract

Penjadwalan merupakan elemen fundamental dalam manajemen konstruksi karena menentukan efektivitas pengaturan waktu dan urutan pekerjaan, terutama pada pembangunan rumah tipe 36 yang memerlukan ketelitian dalam mengelola durasi dan ketergantungan aktivitas. Penelitian ini bertujuan menganalisis dan membandingkan hasil penentuan lintasan kritis antara metode Critical Path Method (CPM) dan Precedence Diagram Method (PDM) untuk memahami perbedaan struktur ketergantungan dan implikasinya terhadap efektivitas penjadwalan proyek berskala kecil. Metode penelitian menggunakan pendekatan kuantitatif dengan rancangan deskriptif-komparatif berdasarkan data aktivitas dan durasi pekerjaan yang diperoleh dari perencanaan proyek di BPBD Kabupaten Bantul, kemudian dianalisis melalui penyusunan jaringan kerja, perhitungan maju–mundur, dan identifikasi aktivitas kritis pada kedua metode. Hasil penelitian menunjukkan bahwa CPM dan PDM menghasilkan durasi total proyek yang sama, yaitu 70 hari, namun dengan konfigurasi lintasan kritis berbeda: CPM mengidentifikasi 15 aktivitas kritis (45,45%), sedangkan PDM mengidentifikasi 26 aktivitas kritis (78,79%). Perbedaan ini menunjukkan bahwa PDM lebih sensitif terhadap hubungan paralel, sedangkan CPM lebih sesuai untuk struktur kerja linear. Penelitian merekomendasikan penggunaan PDM pada proyek yang membutuhkan ketelitian tinggi dalam pemodelan ketergantungan aktivitas dan CPM sebagai alat pemetaan awal lintasan kritis.
SCHEDULE DEVIATION EVALUATION OF A THREE-STORY BOARDING HOUSE PROJECT USING EARNED VALUE MANAGEMENT Martinus Remonsius Seingo; Sely Novita Sari; Oggi Heicqal Ardian; Rizal Maulana
Clean Energy and Smart Technology Vol. 5 No. 1 (2026): October
Publisher : Nacreva Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58641/cest.v5i1.262

Abstract

Delays in construction projects affect the achievement of completion targets, so a control method that evaluates schedule performance effectively is required. This study evaluates the schedule performance of a three-story boarding house project at Gg. Menur, Ngropoh, Condongcatur, Depok, Sleman using a schedule-based Earned Value Management (EVM) approach. Because the project Bill of Quantities (BoQ) was not available, Planned Value (PV) and Earned Value (EV) are represented by cumulative percentages of physical progress rather than by budgeted cost values. The approach is therefore a modified, schedule-only application of EVM: it measures schedule performance alone, and cost indicators such as Cost Variance (CV) and Cost Performance Index (CPI) are outside its scope. A quantitative descriptive approach was applied to the project time schedule and weekly progress reports, and performance was analyzed through Schedule Variance (SV) and Schedule Performance Index (SPI), with weeks classified using a predetermined tolerance band of SPI = 1.00 ± 0.05. At the end of week 35 the PV reached 100% while the EV reached only 76.224%, giving an SV of −23.776 percentage points and an SPI of 0.76. Of the 35 weeks, 60% were ahead of schedule, 14.29% within tolerance, and 25.71% delayed, with sustained delay from week 27. The actual progress rate remained almost constant at about 2.2 percentage points per week throughout, whereas the plan required it to double after week 25, indicating that the deviation arose from a back-loaded baseline rather than from a decline in site productivity. An Earned Schedule analysis gives an estimated duration of approximately 42.6 weeks, about 7.6 weeks beyond the plan.
COST AND ON-SITE DURATION COMPARISON OF CONVENTIONAL AND PRECAST FLOOR SLAB METHODS: A TWO-STORY BOARDING HOUSE CASE STUDY IN YOGYAKARTA Yohanis Kresna Nahak; Rizal Maulana; Oggi Heicqal Ardian; Sely Novita Sari
Clean Energy and Smart Technology Vol. 5 No. 1 (2026): October
Publisher : Nacreva Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58641/cest.v5i1.268

Abstract

Floor slab construction strongly affects both the cost and the on-site duration of low-rise buildings, yet transparent project-level comparisons for small boarding houses remain scarce. This study compares the direct cost and on-site construction duration of conventional cast-in-place and precast floor slab methods for the 50.36 m² second-floor slab of a two-story type-135 boarding house in Pugeran, Yogyakarta. A quantitative comparative case study was applied using project drawings, an itemized quantity take-off, the Indonesian Unit Price Analysis (AHSP), documented local price bases, a supplier quotation, and labor-based duration calculations. The conventional alternative cost IDR 35,746,962.53 and the supplier-inclusive precast alternative IDR 30,216,000.00, a project-specific saving of IDR 5,530,962.53 (15.47%), while the calculated on-site duration fell from 11 days to 2 days, a reduction of 9 days (81.82%). A sensitivity analysis shows that the cost advantage reverses once the precast price rises by about 18%, identifying the condition under which the conventional method becomes cheaper. The reported savings apply only to the prices, crew composition, and work scope adopted in this case study; they exclude factory lead time and curing, and they do not constitute structural verification of the precast system.
Co-Authors Anggi Hermawan Bagus Gilang Pratama, Bagus Gilang Erwin Nur Afiato Luna Amadea Maharani Sudjatmiko Martinus Remonsius Seingo Rizal Maulana Rizal Maulana, Rizal Rizqi Prastowo Sely Novita Sari Yohanis Kresna Nahak