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INDENTIFIKASI FAKTOR-FAKTOR MEMPENGARUHI KINERJA BIAYA OPERASIONAL DAN PEMELIHARAAN JARINGAN IRIGASI D.I PAGUYAMAN
No full textThis study aims to identify the factors that influence the performance of operational and maintenance costs in the DI irrigation network. Paguyaman. To achieve this goal, the researchers used a survey method by distributing questionnaires to a number of respondents who were involved in the implementation and monitoring of DI irrigation networks. Paguyaman. Data collection was carried out by way of a direct survey to the location and a list of questions in the questionnaire for primary data. As for the secondary data obtained from the literature and data from related agencies. Based on the results of the questionnaire from the respondents, a ranking was made of the causal factors that affect the performance of operational and maintenance costs in the DI irrigation network. Paguyaman. From the ranking results, there are 15 factors that are categorized as influential. The conclusions that can be drawn after statistical tests are that there are seven factors that influence the performance of operational costs and maintenance of irrigation networks in D.I Paguyaman. These factors are unexpected conditions and events (floods, earthquakes and others), general information and methods in carrying out operations and maintenance for field officers are inadequate, there is still a lack of responsibility for officers in carrying out irrigation operations and maintenance, changes in areas that encouraging the conversion of paddy fields to other users, the number of operational and maintenance officers is still lacking, the equipment is of poor quality and there is no training for P3A, and the most dominant factors affecting the performance of operational costs and maintenance of irrigation networks in D.I Paguyaman are conditions and events that unexpected events (floods, earthquakes, etc.)
KAJIAN PENGARUH KONTROL ALIRAN TERHADAP KOEFISIEN HAMBAT MODEL KENDARAAN
Get PDFThe characteristics of the airflow that is formed around the vehicle body affects the value of the resistance acting on the vehicle. When it reaches the rear edge of the vehicle, the flow undergoes a process of separation. So modification of the vehicle body design that is able to reduce the separation is urgently needed. Flow engineering around the vehicle body can be obtained by modifying the shape which is considered more aerodynamic. Meanwhile, flow engineering can also be obtained through the application of an active control system in areas that are considered to have the potential to initiate flow eddies on the rear side of the vehicle and have a major influence on the formation of flow separation. This research aims to examine the impact of the application of flow control blowing technique on the resistance of the modeled vehicle. The geometric angle of the front wall is determined to be 35°. The research uses a numerical computational approach with a standard k-epsilon as a turbulence model. The upstream velocity applied is 13.9 m/s, while the blowing velocity is set at 0.5 m/s. The research results prove that the application of blowing flow control has succeeded in minimizing the formation of wake structures and has the effect of delaying separation and has succeeded in reducing the aerodynamic drag coefficient to 9.3187%
EFEK PENERAPAN KONTROL AKTIF BLOWING TERHADAP TARIKAN AERODINAMIKA MODEL KENDARAAN
Get PDFVehicle stability when driving is an issue that needs attention because it relates to comfort in driving and the effectiveness of fuel consumption. This is caused by the large aerodynamic drag force of the vehicle due to the structure of the air flow which flows regularly and experiences separation when it reaches the rear end point of the vehicle. This separation of the flows causes significant negative pressure on the rear window due to the return flow which does not follow the shape of the vehicle body. The purpose of this study was to analyze the effect of implementing active control of blowing type flow on vehicle models on aerodynamic drag. This study applies a numerical computational method with a modified Ahmed body model as the main object of research. The active blowing control is placed at the rear end of the model which is considered the initial separation area. Blowing speed was varied 0.2 m/s, 0.8 m/s, 1.5 m/s, and 2.0 m/s and was tested at an upstream speed of 16.7 m/s. Research results indicate that the application of active blowing control has succeeded in providing a delay in separation effect, reducing turbulence and reducing aerodynamic drag by 8-9%
ANALISIS KOEFISIEN PRODUKTIVITAS PEKERJA PADA PEKERJAAN ARSITEKTUR PROYEK PEMBANGUNAN GEDUNG BERTINGKAT
Get PDFAbstrak: Analisis Koefisien Produktivitas Pekerja Pada Pekerjaan Arsitektur Proyek Pembangunan Gedung Bertingkat. Proses pelaksanaan pekerjaan konstruksi memiliki kemungkinan keterlambatan yang diakibatkan oleh berbagai faktor kendala yang dapat menghambat pekerjaan yang ada di lapangan. Keterlambatan dalam durasi penyelesaian proyek akan memperngaruhi biaya yang diperlukan dalam penyelesaian sebuah proyek konstruksi. Produktivitas yang merupakan perbandingan antara hasil pekerjaan yang dilakukan dengan sumber daya tersedia yang digunakan menjadi salah satu faktor yang dapat mempengaruhi durasi dan biaya sebuah proyek konstruksi. Apabila produktivitas rendah maka proyek memiliki kemungkinan mengalami keterlambatan dari jadwal, namun apabila produktivitas memiliki nilai yang tinggi maka proyek dapat diselesaikan lebih awal dari jadwal yang ada. Koefisien produktivitas dalam pekerjaan konstruksi di Indonesia yang menjadi standar koefisien produktivitas tenaga kerja dapat ditemukan dalam Permen PUPR No.1 Tahun 2022. Hasil analisis yang didapatkan dari observasi produktivitas tenaga kerja yang dilakukan di lapangan menunjukkan nilai rata-rata koefisien produktivitas pekerjaan arsitektur pada pembangunan gedung 13 lantai di Kota Surabaya untuk pekerjaan bata merah, bata ringan, plesteran, dan acian memiliki nilai yang lebih kecil dibandingkkan dengan standar koefisien yang terdapat pada Peraturan Menteri Pekerjaan Umum dan Perumahan Rakyat No.28 Tahun 2022, nilai koefisien tersebut menunjukan bahwa produktivitas pekerja yang terdapat di lapangan memiliki nilai yang lebih tinggi. Dari analisis yang dilakukan didapatkan hasil bahwa bahwa koefisien di lapangan menunjukkan hasil yang lebih optimal jika dibandingkan dengan koefisien Permen PUPR No.1 Tahun 2022.
Kata kunci: Koefisien; Produktivitas; Proyek.
Abstract: Analysis Of Worker Productivity Coefficient In Architectural Work In Rising Building Projects. The process of carrying out construction work has the possibility of delays caused by various constraining factors that can hinder existing work in the field. Delays in the duration of project completion will affect the costs required to complete a construction project. Productivity, which is a comparison between the results of the work done and the available resources used, is one of the factors that can affect the duration and cost of a construction project. If productivity is low then the project has the possibility of experiencing a delay from the schedule, but if productivity has a high value then the project can be completed earlier than the existing schedule. The productivity coefficient in construction work in Indonesia, which is the standard for the coefficient of labor productivity, can be found in the PUPR Ministerial Regulation No. 1 of 2022. The results of the analysis obtained from observations of labor productivity carried out in the field show that the average value of the productivity coefficient for architectural work in building construction of 13-storey building in Surabaya for red brickwork, lightweight brick, plastering, and plastering has a smaller value compared to the standard coefficient contained in the Regulation of the Minister of Public Works and Public Housing No. 28 of 2022, the coefficient value This shows that the productivity of workers in the field has a higher value. From the analysis carried out, it was found that the coefficients in the field showed more optimal results when compared to the coefficients of the PUPR Ministerial Decree No.1 of 2022.
Keyword: Coefficient; Productivity; Projec
MATERIAL REQUIREMENT PLANNING BERDASARKAN HASIL RESOURCE LEVELING PADA PROYEK KONSTRUKSI JALAN TOL
Get PDFAbstrak: Material Requirement Planning Berdasarkan Hasil Resource Leveling Pada Proyek Konstruksi Jalan Tol. Indonesia sebagai salah satu negara berkembang terus berusaha untuk meningkatkan aktivitas ekonomi nasional dengan pembangunan infrastruktur. Salah satu sektor infrastruktur yang sedang dalam proses pembangunan adalah Proyek Jalan Tol Solo – Yogyakarta – NYIA Kulon Progo. Proyek tersebut merupakan proyek konstruksi jalan tol sepanjang 96+57 Km, yang terbentang dari Solo hingga NYIA Kulon Progo. Pada tahap perencanaan proyek, ditemui beberapa kendala dalam hal pengalokasian sumber daya. Kendala tersebut berupa terjadinya fluktuasi yang diakibatkan oleh pengelolaan alokasi sumber daya manusia yang kurang merata dan pengadaan material proyek yang tidak dapat memenuhi permintaan, dimana hal tersebut dapat diminimalisir dengan menerapkan metode resource leveling dan Material Requirement Planning (MRP). Analisis perencanaan pengalokasian sumber daya tenaga kerja menghasilkan total durasi proyek selama 21 minggu, dengan puncak penggunaan tenga kerja pekerja sebanyak 179 pekerja/hari. Jumlah tersebut tidak sesuai dengan kondisi ideal, dimana jumlah maksimal pekerja yang tersedia hanya 85 pekerja/hari. Metode resource leveling digunakan sebagai solusi untuk masalah tersebut dengan hasil total durasi proyek bertambah menjadi 29 minggu dan penggunaan tenaga kerja dibawah 85 pekerja/hari. Selanjutnya, untuk memenuhi kebutuhan permintaan material digunakan metode Material Requirement Planning (MRP) dengan teknik Economic Order Quantity (EOQ) dan Lot for Lot (LFL). Total biaya MRP dengan metode EOQ sebesar RP 61.019.254.085. Sedangkan, total biaya MRP dengan Teknik LFL sebesar Rp 59.269.052.290. Sehingga Material Requirement Planning dengan menggunakan metode LFL lebih ekonomis dibandingkan dengan metode EOQ.
Kata Kunci: Proyek Konstruksi, Jalan Tol, Resource leveling, Material Requirement Planning, Economic Order Quantity, Lot for Lot.
Abstract: Material Requirement Planning Based on Resource Leveling Results in Toll Road Construction Projects. Indonesia as a developing country continues to strive to increase national economic activity through infrastructure development. One of the infrastructure sectors currently under construction is the Solo – Yogyakarta – NYIA Kulon Progo Toll Road Project. The project is a 96+57 Km toll road construction project, which stretches from Solo to NYIA Kulon Progo. At the project planning stage, several obstacles were encountered in terms of allocating resources. These constraints are in the form of fluctuations caused by the management of the allocation of human resources that are uneven and the procurement of project materials that cannot meet requests, which can be minimized by applying the resource leveling method and Material Requirement Planning (MRP). The planning analysis of the allocation of labor resources resulted in a total project duration of 21 weeks, with a peak use of 179 workers/day. This number is not in accordance with ideal conditions, where the maximum number of workers available is only 85 workers/day. The resource leveling method was used as a solution to this problem with the result that the total duration of the project increased to 29 weeks and the use of labor was below 85 workers/day. Furthermore, to meet the needs of material requests, the Material Requirement Planning (MRP) method is used with the Economic Order Quantity (EOQ) and Lot for Lot (LFL) techniques. The total cost of MRP using the EOQ method is IDR 61,019,254,085. Meanwhile, the total cost of MRP using the LFL technique is IDR 59,269,052,290. So that Material Requirement Planning using the LFL method is more economical than the EOQ method.
Keywords: Construction Projects, Toll Roads, Resource leveling, Material Requirement Planning, Economic Order Quantity, Lot for Lot
INDIKATOR KONSERVASI AIR PADA SISTEM PENILAIAN GREEN BUILDING
Get PDFAbstrak: Indikator Konservasi Air Pada Sistem Penilaian Green Building. Pemanasan global adalah peristiwa peningkatan suhu bumi yang berkelanjutan, yang mempengaruhi ekosistem dan mengganggu keseimbangan ekologis planet ini. Bangunan menyumbang hampir 40% dari semua emisi gas rumah kaca. Salah satu langkah untuk mengurangi dampak tersebut adalah menerapkan konsep green building. Green building mencakup beberapa aspek yang berkaitan dengan air, energi, kualitas lingkungan dalam ruangan, lokasi, dan pemilihan material. Pengaruh aspek air pada green building sangat berpengaruh karena penggunaan air bersih relatif tinggi, dengan jumlah penduduk Indonesia yang terus meningkat setiap tahunnya. Penggunaan air bersih di masyarakat menjadikan air bersih menjadi air limbah yang tidak dapat digunakan, sehingga ketersediaan air bersih semakin berkurang. Green building telah dikembangkan di beberapa negara. Namun memiliki keterbatasan dalam menentukan tingkat kepentingan masing-masing indikator dalam sistem bangunan hijau. Pengumpulan data menggunakan kuesioner survei melalui Google forms. Untuk menentukan tingkat signifikansi menggunakan metode skala Likert. Hasil dari penelitian ini pemasangan meteran air 76,42%; ukuran perhitungan penggunaan air 84,10%; pengurangan penggunaan air 83,57%, kriteria fitur air 77,5%; mendaur ulang air 78,75%; sumber air alternatif 78,57%; pengumpulan air hujan 73,75% dan efisiensi penggunaan air lanskap 78,75%.
Kata kunci: Green Building; Konservasi Air; Greenship
Abstract: Indicators of Water Conservation in the Green Building Assessment System.Global warming is an ongoing event of increasing temperature on the earth, which affects ecosystems and disrupts the planet's ecological balance. Buildings contribute almost 40% of all greenhouse gas emissions. One step to reduce that impact is implementing the concept of green buildings. Green buildings cover several aspects related to water, energy, indoor environmental quality, location, and material selection. The influence of the water aspect in green buildings is very influential because the use of clean water is relatively high, with the Indonesian population increasing yearly. The use of clean water in the community turns clean water into wastewater that cannot be used, so the availability of clean water decreases. Green buildings have been developed in several countries. However, it has limitations in determining the level of importance of each indicator in the green building system. Data collection is using a survey questionnaire via Google forms. They determine the level of significance using the Likert scale method. The results of this study are installing a water meter 76.42%; the measures for calculating water use 84.10%; reducing water use 83.57%, the criteria for water features 77.5%; recycling water 78.75%; alternative water sources 78.57%; rainwater collection 73.75% and landscape water use efficiency 78.75%.
Keywords: Green Building; Water Conservation; Greenshi
IMPLEMENTASI JOB SAFETY ANALYSIS DALAM PENANGANAN PENCEGAHAN KECELAKAAN KERJA DI PT.DNP
Get PDFDNP (Dinamika Nusantara Perkasa) is a business company involved in the field of distributor sales & Repair Services of industrial machinery. . The urgency in conducting research on this company is based on the results of observational activities on observed objects that during the process of activities in performing repair services workers are sometimes less vigilant and careful so that the work they do is at risk in the incidence of a number of accidents. In order to resolve the issues that arise,, conducted research actions aimed at minimizing the occurrence of accidents with the implementation of Job Safety Analysis. In this study was conducted using a semi-qualitative method with data analysis of occupational accident risk that resulted in the conclusion of occupational accident risk at low risk level occurred in the activities of machine component replacement, medium risk accident level in the activities of the installation of knife components and lubricant, high risk level in the activities of material removal , repair of components with welding machines, repair installation of control panels and electric motors. Suggestions intended for the company are expected to require the company to provide personal protective equipment facilities and first aid kit when there are injured workers and the need for the company to emphasize the application of work accident control efforts to workers to minimize the risk of work accidents
PEMANFAATAN LIMBAH CANGKANG REMIS SEBAGAI BAHAN SUBSTITUSI SEMEN PADA BATAKO SEGITIGA
Get PDFAbstrak: Pemanfaatan Limbah Cangkang Remis Sebagai Bahan Subtitusi Semen Pada Batako Segitiga. Remis merupakan jenis kerang yang banyak terdapat di daerah kecamatan Tugumulyo. Penelitian ini dilakukan untuk mengetahui apakah limbah cangkang remis bisa dimanfaatkan sebagai bahan substitusi semen pada batako segitiga. Penelitian ini menggunakan studi eksperimental dengan melakukan percobaan langsung di laboratorium. Rencana adukan campuran batako segitiga ini menggunakan 6 persentase pemakaian abu cangkang remis, yaitu: 0%, 20%, 30%, 40%, 50%, dan 60%. Hasil pengujian kuat tekan rata-rata batako segitiga memiliki nilai yang berbeda. Kuat tekan rata-rata pada sampel I pada batako pejal adalah 26 kg/cm2 dan batako berlubang adalah 25 kg/cm2, sampel II pada batako pejal adalah 27 kg/cm2 dan batako berlubang adalah 25 kg/cm2, sampel III pada batako pejal adalah 20 kg/cm2 dan batako berlubang adalah 19 kg/cm2, sampel IV pada batako pejal adalah 19 kg/cm2 dan batako berlubang adalah 17 kg/cm2, sampel V pada batako pejal adalah 20 kg/cm2 dan batako berlubang adalah 18 kg/cm2, sedangkan kuat tekan batako segitiga yang terkecil adalah sampel VI pada batako pejal adalah 17 kg/cm2 dan batako berlubang adalah 15 kg/cm2 Berdasarkan hasil penelitian dapat disimpulkan bahwa abu cangkang remis layak digunakan sebagai bahan substitusi semen dengan persentase maksimal adalah 20%.
Kata Kunci : Abu Cangkang Remis; Batako Segitiga Pejal; Batako Segitiga Berlubang; Kuat Tekan
Abstract: Utilization Of Remis Shell Waste As A Substitutional Material For Cement In Triangle Bricks. Clam is a type of shellfish that are widely found in the Tugumulyo sub-district. This research was conducted to determine whether clam shell waste can be used as a substitute for cement in triangular blocks. This research used experimental study by doing the experiments directly in the laboratory. The plan of mixing triangular bricks mixtures used 6 percent of clam shell ash, namely: 0%, 20%, 30%, 40%, 50%, and 60%. The test results of the average compressive strength of triangular blocks have different values. The average compressive strength in the sample “I” on solid brick is 26 kg/cm2, and the hollow brick is 25 kg/cm2, the sample “II” on solid brick is 27 kg/cm2, and the hollow brick is 25 kg/cm2, the sample “III” on solid brick is 20 kg/cm2, and the hollow brick is 19 kg/cm2, the sample “IV” on solid brick is 19 kg/cm2, and the hollow brick is 17 kg/cm2, the sample “V” on solid brick is 20 kg/cm2, and the hollow brick is 18 kg/cm2, the sample “VI” on solid brick is 17 kg/cm2, and the hollow brick is 15 kg/cm2. This percentage of the clam shell ash a substitute for cement in each sample is different. As the results of the research, it can be concluded that clam shell ash is properly suitable to use as a cement substitute with a maximum percentage is 20%.
Keywords : Clam Shell Ash; Triangle Solid Brick; Triangle Hollow Brick; Compressive Strengt
PARTISIPATIF DESAIN KAWASAN PERMUKIMAN PESISIR MASYARAKAT NELAYAN KELURAHAN LEATO SELATAN
Get PDFThis research purpose are: (1) to identify the potential of the community in the participation or involvement in the design of fishing settlements on the coast; (2) exploring the potential of sustainable natural resources in existing settlements to apply the concept of a sustainable environment and a healthy environment. This research used a descriptive qualitative methods with the collaborative rationalistic community approach’s, with the location of a fishing settlement in RW 3, Leato Selatan Village. Field surveys were conducted in June – August 2022, starting with initial data collection followed by collaborative participatory methods with the community in the form of socialization, observation and design concepts from existing data. The results of this study show that the participation of the community along the coast of South Leato Sub-District is very large in involvement in data collection and design for their settlement area, their response is the potential possessed by the community, in addition to the potential of natural resources owned by the coast of South Leato which is in RW 3 also supports the implementation of design exploration with the concept of a healthy environment (sustainable environment). The conclusions of the research is that design participation in creating a sustainable environment and health environment requires cross-sectoral collaboration consisting of the community and academics (in this case researchers from Bina Taruna University, Gorontalo)
TINGKAT KESIAPAN GENERASI EMAS INDONESIA DI ERA DISRUPSI BERDASARKAN KARAKTERISTIK DIGITAL NATIVE
Get PDFThis study aims to measure the level of student generation Z with Digital Native characteristics, which are limited to active students in Odd Semester 2022/2023 Information Technology Education Study Program (ITE) and Visual Arts Education Study Program (VAE) Faculty of Engineering, State University of Gorontalo, who will reach the age of 40 to 45 years in 2045 (Golden Generation). The research method used is descriptive quantitative. The results showed that ITE and VAE Study Program students were at a "moderate" level of readiness in welcoming Indonesia Gold 2045. The most dominant Digital Native characteristics possessed by ITE and VAE students were connected (always connected to friends because of technology and the internet) and digital literate, but tend not to understand clearly what is the goal in his life (goal-oriented). The conclusion that can be drawn is that ITE Study Program students are at a "High" level of readiness, compared to VAE Study Program students who are at a "Medium" level of readiness in welcoming Indonesia Gold 2045 based on digital native characteristics