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All Journal Jurnal Rekayasa Sipil dan Desain Teras Jurnal BENTANG : Jurnal Teoritis dan Terapan Bidang Rekayasa Sipil Mestaka: Jurnal Pengabdian Kepada Masyarakat
Purwadi, Ofik Taupik
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Pembuatan Pompa Air Tanpa Mesin Sebagai Sarana Irigasi Di Dataran Tinggi Pekon Bumi Ratu Hendri, John; Mulyono, Mulyono; Khotimah, Siti Nurul; Purwadi, Ofik Taupik; Bahri, Syaiful; Laila, Aspita; Ambarwati, Yuli
MESTAKA: Jurnal Pengabdian Kepada Masyarakat Vol. 3 No. 6 (2024): Desember 2024
Publisher : Pakis Journal Institute

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58184/mestaka.v3i6.532

Abstract

Bumi Ratu Village is located on the edge of the Way Sekampung dam, with the position of the dam lower than the village land. This causes the agricultural land and rice fields of Bumi Ratu Village to have difficulty getting water, because the irrigation flow cannot reach a higher position. This problem is an important concern because it greatly affects the planting season and harvest from agriculture. The purpose of this service is to overcome the problem of irrigation of land that has a geographical location above the river level through appropriate technology in the form of a water pump without a machine (hydram pump). The method of this activity consists of several steps, namely 1) Determination of location points that have water sources, 2) Making hydram pump equipment, 3) Socialization, 4) Hydram Pump Trial and 4) Evaluation. This community service activity is expected to be an effective solution in overcoming irrigation problems on their agricultural land. The results of this community service activity show that hydram pumps are an appropriate solution to the irrigation problems that occur in Bumi Ratu Pagelaran Village. Through the use of this hydram pump, farmers and landowners are expected to optimize land irrigation around the highland area so that crop yields can be as expected.
Analisis Oceanografi Untuk Penanganan Abrasi Pantai Bengkulu Purwadi, Ofik Taupik; Rahmadani, Eria Zundi
Teras Jurnal : Jurnal Teknik Sipil Vol. 15 No. 2 (2025): Teras Jurnal (September)
Publisher : UNIVERSITAS MALIKUSSALEH

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29103/tj.v15i2.1268

Abstract

Abstrak   Permasalahan abrasi pantai di beberapa wilayah yang ada di Indonesia menjadi salah satu fenomena alam yang secara alami terjadi, fenomena abrasi pantai yang terjadi di sepanjang wilayah pesisir Bengkulu, khususnya pada ruas jalan negara (Bintunan - Lais). Metode yang digunakan meliputi survei in situ dan wawancara dengan masyarakat setempat untuk mengumpulkan data mengenai kejadian abrasi. Hasil penelitian menunjukkan bahwa arus laut dominan bergerak ke arah Selatan Tenggara dengan kecepatan rata-rata 0,81 m/s, yang berkontribusi pada proses transportasi sedimen. Tinggi gelombang yang terukur mencapai 2,3 m pada saat pasang, yang mempercepat proses abrasi. Selain itu, analisis sedimentasi menunjukkan bahwa jenis partikel dominan adalah pasir halus, dengan laju sedimentasi berkisar antara 25,16-34,25 mg/cm³/det. Penelitian ini menekankan pentingnya pengelolaan pantai yang berkelanjutan untuk mengurangi dampak abrasi dan melindungi infrastruktur yang ada.   Kata kunci: Abrasi, Oceanografi, Pesisir Bengkulu     Abstract   The problem of coastal abrasion in several regions in Indonesia is one of the natural phenomena that naturally occurs, the phenomenon of coastal abrasion that occurs along the coastal areas of Bengkulu, especially on the state road (Bintunan - Lais). The methods used include in situ surveys and interviews with local communities to collect data on abrasion events. The results showed that the dominant ocean currents moved towards South-Southeast with an average speed of 0,81 m/s, which contributed to the sediment transportation process. The measured wave height reaches 2,3 m at high tide, which accelerates the abrasion process. In addition, sedimentation analysis showed that the dominant particle type was fine sand, with sedimentation rates ranging from 25,16-34,25 mg/cm³/det. This research emphasizes the importance of sustainable beach management to reduce the impact of abrasion and protect existing infrastructure.   Keywords: Abrasion, Oceanography, Coastal Bengkulu
Sustainability Analysis of Water Availability in Way Sekampung Dam using Vensim Dynamic Program Murdiagatma, Sefrinta Sasma; Wahono, Endro Prasetyo; Kusumastuti, Dyah Indriana; Purwadi, Ofik Taupik; Zakaria, Ahmad
Bentang : Jurnal Teoritis dan Terapan Bidang Rekayasa Sipil Vol 13 No 2 (2025): BENTANG Jurnal Teoritis dan Terapan Bidang Rekayasa Sipil (July 2025)
Publisher : Universitas Islam 45

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33558/bentang.v13i2.10579

Abstract

The sustainability of dam operations needs to be reviewed in terms of water availability, in order to maintain the sustainability of water demand in all sectors in the coming years. This study aims to analyze of water availability of the Way Sekampung Dam reservoir according to its needs using one of the applications of the dynamic program, Vensim. The study used data-driven scenario simulations on the Vensim application, to analyze key factors including available inflows, required outflows, storage capacity of the dam and plans to supply raw water over a 25-year period. The results show that the dam can supply raw water for Bandar Lampung, Beranti, Pringsewu and Metro City with a total capacity of 2,737 liters per second and support water needs for potential irrigation of 76,006 hectares. Optimization of the dam's storage operation can be achieved, with a target reliability of 100% occurring in 2027, the year when the dam's storage condition reaches its optimal level at an elevation of +125.23 meters. To meet downstream water demand, the dam's storage capacity must be maintained at an elevation of +124.0 meters or higher, with a volume of 68,060,000 m³ and an inundation area of 5,020.8 km2. If the water storage falls below this elevation, it will be necessary to update the water allocation policy, adjust management regulations, appropriate management strategies, including periodic updating of the reservoir operation rules and implementation of a flexible water release schedule, to ensure continuous water availability at the Way Sekampung Dam reservoir.
Pendugaan Hasil Sedimen Terhadap Penggunaan Lahan dengan Metode MUSLE di DAS Way Besai Saputro, Rifki Ananda; Kusumastuti, Dyah Indriana; Wahono, Endro Prasetyo; Zakaria, Ahmad; Purwadi, Ofik Taupik
Teras Jurnal : Jurnal Teknik Sipil Vol. 14 No. 2 (2024): Volume 14 Nomor 2, September 2024
Publisher : UNIVERSITAS MALIKUSSALEH

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29103/tj.v14i2.1101

Abstract

Abstrak Salah satu dampak dari erosi adalah penurunan produksi pangan secara global. Penyebab erosi yang terjadi di wilayah sungai adalah perubahan tutupan lahan dan iklim. Dengan melakukan penghijauan, meningkatkan vegetasi dan ekologi, dan perencanaan penggunaan lahan diindikasikan dapat mencegah erosi. Sedimentasi akibat erosi di sungai juga dapat mengurangi kapasitas sungai dalam menampung air. Metode MUSLE (Modified Universal Soil Loss Equation) merupakan pengembangan metode USLE (Universal Soil Loss Equation) dalam pendugaan hasil sedimen. Tujuan dari penelitian adalah memperoleh pendugaan hasil sedimen terhadap penggunaan lahan menggunakan metode MUSLE pada Daerah Aliran Sungai (DAS) Way Besai berbasis sistem informasi geografis. Hasil sedimen periode ulang dengan metode MUSLE untuk Y(2 tahun), Y(5 tahun), Y(10 tahun), Y(25 tahun), Y(50 tahun), Y(100 tahun), dan Y(200 tahun) masing-masing diperoleh sebesar 656.8765 ton, 782.4091 ton, 861.3319 ton, 957.7598 ton, 1027.6898 ton, 1096.4283 ton, dan 1164.6822 ton. Sedimentasi kala ulang menunjukkan tren peningkatan sejalan dengan bertambahnya lama periode yang berulang. Kata kunci: Sedimen, Erosi, MUSLE, DAS Way Besai  Abstract Erosion leads to a global decrease in food production. Land cover and climate changes are the main causes of erosion in river areas. To reduce erosion, we can implement greening projects, improve vegetation, and plan land use strategically. Sedimentation resulting from river erosion can diminish the water-holding capacity of rivers. MUSLE (Modified Universal Soil Loss Equation) method, which enhances USLE (Universal Soil Loss Equation), is used to predict sediment yield. The objective of research is to estimate sediment yield in relation to land use using MUSLE method within Way Besai Watershed, based on a geographic information system (GIS). Sediment yields for recurrence periods, including Y(2 years), Y(5 years), Y(10 years), Y(25 years), Y(50 years), Y(100 years), and Y(200 years), are calculated as 656.8765 tons, 782.4091 tons, 861.3319 tons, 957.7598 tons, 1027.6898 tons, 1096.4283 tons, and 1164.6822 tons, respectively. Sedimentation rates exhibit an upward trajectory in tandem with increasing recurrence periods. Keywords: Sedimentation, Erosion, MUSLE, Way Besai Watershed
Analisis dan Perencanaan Sistem Drainase Di Jl. Raden Gunawan 2 Kecamatan Rajabasa Bandar Lampung Syah, Ismawan Dewan; Arifaini, Nur; Purwadi, Ofik Taupik
Jurnal Rekayasa Sipil dan Desain (JRSDD) Vol. 6 No. 3 (2018): Edisi September 2018
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jrsdd.v6i3.875

Abstract

The occurrence of floods at Raden Gunawan 2 street, Rajabasa district, Bandar Lampung was caused by the inability of existing drainage channels to accommodate direct run-off discharge and blockage of drainage channels by garbage.Hydrological analysis was performed by using the maximum rainfall data within the last 10 years, then, parameter calculation were performed to calculate the discharge plan using rational method. The wide-scale of watershed is 0.77308 km2 and the drainage coefficient is 0.5132. The hydraulic analysis was conducted to calculate the drainage channel discharge capacity using continuity formula and Manning formula, after that, suitable systems and dimensions were planned.Based on the results of the research, the suitable rain distribution is Log Pearson III Distribution which obtained rainfall value of plan for the 5-year rework time of 109,016 mm and the amount of the biggest discharge at joint segment between primary channel and Kemiling area is 2,8336 m3 / sec. Then, flood heights were found in the research area as high as 10-30 cm, because the existing dimensions were not able to accommodate the discharge plan. Thus, suitable channel dimensions are planned using U-Ditch shaped sections with U100 / 100, U150 / 150, U150 / 250 and U250 / 250 sizes. So, the discharge plan (Qr) is smaller than the discharge channel (Qs). Keywords: drainage, hydrology, hydraulics, distribution.
Analisis Sistem Kinerja Drainase Berbasis Sistem Informasi Geografis (SIG) di Lingkungan Universitas Lampung Fikri, Aulia; Purwadi, Ofik Taupik; Perangin Angin, Geleng
Jurnal Rekayasa Sipil dan Desain (JRSDD) Vol. 6 No. 4 (2018): Edisi Desember 2018
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jrsdd.v6i4.1019

Abstract

Urban drainage systemare important. Drainage problems can cause puddle and flood. Therefore, it is needed an analysis and information about drainage system’s performance in Lampung University’s environment. The information of this data is in the form of digital based system that is Geographic Information System.Research is done at the environment of Lampung University, Bandar Lampung. The purpose of study is to know the drainage problem, drainage performance, handling concept, and database that is visualized based on GIS. So, it is expected to be useful and facilitate the policy holder and society to access the information.Based on research, formed a database GIS that is a result of spatial, hydrology, and hydraulics analysis is watersheds analysis, flood debt data, condition data, function, type, geometric and waterworks, puddle data and capacity of drainage. From those analysis obtained the drainage performance system that needed to have a physical and flow network connectivity repair. Also, the implementation of environmentally drainage concept with optimization the function of retention pond a way to manage water conservation is connected with drainage system. There are 4 pond and retention pond as handling plan. Keywords: Drainage, Watersheds Analysis, GIS, SIG, Geographics Information System.
Design Planning of Small DAM Conservation at Simple Rental Flats University of Lampung Novitasari, Novitasari; Purwadi, Ofik Taupik; Tugiono, Subuh
Jurnal Rekayasa Sipil dan Desain (JRSDD) Vol. 7 No. 2 (2019): Edisi Juni 2019
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jrsdd.v7i2.1198

Abstract

Rain Water Harvesting is a method of water conservation by flowing rainwater into a single point of basin on the surface of the earth.  This method can be applied to areas that have a supporting topography including the educational environment.  The Lampung University area has several points of basin to hold rainwater, one of them is a water basins in the area of Simple Flats for University of Lampung can be used to do water conservation through the construction of small dam.The methods are used to redesign this small dam conservation are hydrological , small dam conservation construction planning , analysis stability of  planned constructions and the last method is estimating building construction cost.  Small dam conservation planned height of 4 m, with a base elevation at +107,00 m the dam crest elevation +110,00 m, dam crest width 2 m, the slope of 1:1,5.  The inflow debit of 0,987 m³/sec and the outflow debit of 0,586 m³/sec with cycle period 5 years. Spillway which used is free overflow type and basin specific energy building Vlugter type.  Stability small dam conservation at simple rental flats University of Lampung construction stated as safe. Reservoir volume after planned to be 29.160,750 m3, increasing from the previous volume 3.309,741 m3.  Cost estimated of design planning of conservation small dam is Rp. 7.323.901.000,00. Keywords: Small dam, Conservation, University of Lampung.
Perencanaan Embung Konservasi di Laboratorium Lapnagan Terpadu Fakultas Teknik Universitas Lampung Hidayat, Taufik; Tugiono, Subuh; Purwadi, Ofik Taupik
Jurnal Rekayasa Sipil dan Desain (JRSDD) Vol. 7 No. 3 (2019): Edisi September 2019
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jrsdd.v7i3.1216

Abstract

AbstractThis research intended to conserve water resources and build an integrated field laboratory at the Faculty of Engineering of Lampung University. The small dam planning method consists of hydrological analysis, small dam body planning analysis, soil strength stability analysis of reservoir construction, and analysis of the budget plan in small dam construction..Rainfall data uses Polinela rain station data with one point rainfall analysis method. The calculation results obtained using these methods are, type of reservoir with small dam dimensions, height of 3,75 m with a base elevation of +105,00 and peak elevation of +108,75, reservoir length of 165,613 m and width of the lighthouse as wide as 2,60 m, slope with 1:1,5 embung height with reinforcement of stone pairs. The flood discharge is 0,375 m³/s for the planned rain pattern of 90% in Bandar Lampung area and the planned water storage volume is 4.951,404 m². The planned budget for Conservation Embung at the Integrated Field Laboratory of the Faculty of Engineering, University of Lampung is Rp. 2,817,793,499 (two billion eight hundred seventeen million seven hundred ninety three thousand four hundred ninety nine rupiahs). Abstrak Penelitian ini bertujuan untuk mengkonservasi sumber daya air dan membangun laboratorium lapangan terpadu di Fakultas Teknik Universitas Lampung. Metode perencanaan embung ini terdiri dari analisis hidrologi, analisis perencanaan tubuh embung, analisis stabilitas kekuatan tanah terhadap konstruksi embung, dan rencana anggaran biaya pada konstruksi embung.  Data hujan menggunakan data stasiun hujan Polinela dengan metode analisis hujan satu titik (point rainfall). Hasil perhitungan didapatkan dengan menggunakan metode-metode tersebut yaitu, tipe embung urugan dengan dimensi embung, tinggi 3,75 m dengan elevasi dasar +105,00 dan elevasi puncak +108,75, panjang embung sebesar 165,613 m dan lebar mercu selebar 2,60 m, kemiringan terhadap tinggi embung 1:1,5 dengan perkuatan pasangan batu. Debit banjir sebesar 0,375 m³/detik untuk pola hujan rencana 90% daerah Bandar Lampung dan volume tampungan air rencana sebesar 4.951,404 m². Rencana anggaran biaya Embung Konservasi di Laboratorium Lapangan Tepadu Fakultas Teknik Universitas Lampung sebesar Rp. 2.817.793.499,- (dua miliyar delapan ratus tujuh belas juta tujuh ratus sembilan puluh tiga ribu empat ratus sembilan puluh sembilan rupiah).
Co-Authors Ahmad Zakaria Ambarwati, Yuli Aspita Laila Dyah Indriana Kusumastuti Endro Prasetyo Wahono Fikri Aulia Geleng Perangin Angin, Geleng John Hendri Mulyono Mulyono Murdiagatma, Sefrinta Sasma Novitasari Novitasari Nur Arifaini Rahmadani, Eria Zundi Saputro, Rifki Ananda Siti Nurul Khotimah Subuh Tugiono, Subuh Syah, Ismawan Dewan SYAIFUL BAHRI Taufik Hidayat