{"title":"Evaluasi Kinerja Struktur Gedung Terhadap Gempa Dengan Analisis Time History (Studi Kasus: Sekolah Nasional Global Nusantara Sampit Kab. Kotawaringin Timur)","authors":"Dwitiun Novyeremia, Fransisco Happy Riadi Haputra Baru, Okta Meilawaty","doi":"10.32672/jse.v8i4.6713","DOIUrl":"https://doi.org/10.32672/jse.v8i4.6713","url":null,"abstract":"Indonesia ditetapkan terbagi menjadi dalam 6 wilayah gempa, hal tersebut dikarenakan Indonesia secara geografis yang berada di antara 3 lempeng tektonik yakni lempeng Indo Australia, yang menunjukkan pergerakan ke utara lalu lempeng Eurasia, yang menunjukkan pergerakan ke selatan dan lempeng Pasifik, yang menunjukkan pergerakan ke timur ke barat. Dengan melihat peristiwa gempa di berbagai lokasi di Indonesia sepanjang tahun 2022, total 217 gempa bumi dengan magnitudo di atas 5 SR. Penelitian ini dilakukan supaya bisa mengetahui kinerja struktur dari Gedung Sekolah Global Nusantara Sampit menurut parameter displacement, drif, serta base shear. Selanjutnya, hasil yang diperoleh dari penelitian ini akan di analisis dengan menggunakan kinerja batas layan dan kinerja batas ultimit, dengan menggunakan metode time history sesuai dengan aturan SNI-1726-2019. Menurut kinerja struktur pada Gedung Sekolah Global Nusantara Sampit diperoleh hasil bahwasanya partisipasi massa struktur terpenuhi pada waktu getaran 0,685 detik dan kontrol kinerja struktur yang dianalisis menggunakan 5 rekaman gempa diperoleh simpangan yang terjadi pada struktur gedung hanya Gempa Manjil yang memenuhi syarat batas layan sebesar (0,03/R)xH = 40 mm. dan batas ultimate sebesar 0,02xH =80 mm dan kinerja pada sendi plastis masuk kedalam immediate occupancy.","PeriodicalId":17758,"journal":{"name":"Jurnal Serambi Engineering","volume":"8 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139338283","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Raysha Amelya, Indah Purnamasari, Muhammad Yerizam
{"title":"Tetes Tebu Menjadi Katalis Untuk Proses Pembuatan Biodiesel","authors":"Raysha Amelya, Indah Purnamasari, Muhammad Yerizam","doi":"10.32672/jse.v8i4.6756","DOIUrl":"https://doi.org/10.32672/jse.v8i4.6756","url":null,"abstract":"Sugar cane is a plant that is processed into crystal sugar because it contains high sugar content. Sugar production produces waste, one of which is molasses waste. This study aims to obtain molasses into a catalyst using the carbonization method and the sulfonation method. The sulfonation method uses variations in the concentration of 2, 4, 6, 8, and 10 N H2SO4 solution and variations in sulfonation time of 2, 4, and 6 hours to get the best molasses catalyst. Catalyst characterization includes surface acidity by acid-base titration, FT-IR, and SEM-EDX. This research also aims to produce biodiesel yield using the best molasses catalyst. The results of surface acidity analysis showed that the best molasses catalyst was obtained at 10 N H2SO4 concentration with 6 hours at 0.907 mmol/gr. FT-IR test results showed the presence of O=S=O functional groups at wave numbers 1149.74 cm-1 and 1038.57 cm-1. SEM and EDX analysis results showed that the molasses catalyst after sulfonation had smaller pores and more sulfur groups on the carbon sheet. The yield of biodiesel produced using a molasses catalyst was 84.51%.","PeriodicalId":17758,"journal":{"name":"Jurnal Serambi Engineering","volume":"96 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-09-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139338887","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Prediksi Performansi Mahasiswa dengan Mempertimbangkan Motivasi Intrinsik Menggunakan Machine Learning","authors":"A. Achmad","doi":"10.32672/jse.v8i4.6722","DOIUrl":"https://doi.org/10.32672/jse.v8i4.6722","url":null,"abstract":"One of the factors that influence the success of an undergraduate student is learning motivation. Students are required to learn and develop themselves independently and actively find the source of knowledge, not just getting knowledge from the lecturers alone. One type of motivation is intrinsic motivation. Intrinsic motivation can be in the form of satisfaction in undergoing learning and gaining knowledge, the existence of appreciation of the achievements achieved, and the existence of life goals to be achieved. Thus it is necessary to do research to predict student learning performance by considering the intrinsic motivation of students. Primary data was obtained from the motivational questionnaire of 100 students, while secondary data includes attendance data, quiz data, assignments, mid-term exam, and final exam. Furthermore, the two types of data are combined. The first stage uses the Logistics Regression Algorithm, Support Vector Classifier, Decision Tree, Random Forest, Gaussian Naïve Bayes, and K-Nearest Neighbors. The quality of the algorithm is measured using the level of accuracy. Cross validation test with 5 K-Fold was carried out, and the Decision Tree algorithm was obtained with the highest yield of 0.898051. The second stage is to do a tuning hyperparameter using a Grid Search and obtained a value of 0.927206. The third stage is to predict data test as much as 21 data and obtained accuracy of 0.904761.","PeriodicalId":17758,"journal":{"name":"Jurnal Serambi Engineering","volume":"47 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-09-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139338857","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Analisis Kualitas Produksi Leaf Spring Type Volvo Dengan Metode Six Sigma Pada PT. XYZ","authors":"Fany Maulana Zaki, Elly Ismiyah, Akhmad Wasiur Rizqi","doi":"10.32672/jse.v8i4.5948","DOIUrl":"https://doi.org/10.32672/jse.v8i4.5948","url":null,"abstract":"PT.XYZ merupakan perusahaan yang bergerak dalam bidang manufacturing dengan salah satu produknya yaitu leaf spring. Berdasarkan data history perusahaan pada periode 1 Oktober 2022 hingga 31 Maret 2023 diketahui persentase terjadinya defect produk leaf spring tersebut sebesar 0.79%-1.10%, sedangkan standar perusahaan maksimal 0.50%. Penelitian ini dilakukan untuk menganalisis penyebab tingkat cacat pada proses produksi. Six sigma menjadi metode yang digunakan bersama untuk mengendalikan kualitas produk. Dari hasil analisis yang dilakukan, terdapat empat jenis cacat pada produksi yaitu cacat material, visual not good, dan grinding surface not good. Hasil pada tahap measure diketahui bahwa tingkat sigma perusahaan sebesar 4.24 yang berarti sudah berada diatas nilai rata-rata perusahaan Indonesia. Dari hasil perhitungan yang disajikan pada diagam pareto diketahui bahwa cacat visual not good memiliki nilai kumulatif yang paling tinggi yaitu 41.6%. Penyebab terjadinya defect yang didapat dari brainstorming dikarenakan area kerja kurang nyaman, penyimpanan bekas kaleng cat tercampur dengan material lain, raw material terkena oli, pengerjaan tidak memerhatikan SOP, skill pekerja tidak merata, dan kondisi mesin yang tidak prima. Pembersihan setiap proses produksi mulai dari bahan mentah hingga produk jadi, penekanan pada SOP, penjadwalan pemeliharaan preventif pada setiap mesin, dan pelatihan pekerja secara berkala merupakan solusi yang disarankan untuk mengatasi cacat tersebut.","PeriodicalId":17758,"journal":{"name":"Jurnal Serambi Engineering","volume":"20 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139339640","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Noise Level of Factory Area Department IB PT Petrokimia Gresik Using Noise Mapping Method and Niosh","authors":"Surya Rizki Ramadhani, D. Widyaningrum","doi":"10.32672/jse.v8i4.6711","DOIUrl":"https://doi.org/10.32672/jse.v8i4.6711","url":null,"abstract":"Noise is a problem in the industrial sector, this resulted in many cases of hearing loss due to noise in industrial areas. PT Petrokimia Gresik has implemented noise control and started implementing several elements/components of the Hearing Conservation Program (HCP)/Hearing Conservation Program (PKP) to control noise. However, the PKP special program has not been implemented systematically, only a few elements/components have been implemented. The research objective was to determine the mapping and noise level in the factory area in the IB department of PT Petrokimia Gresik using the Noise Mapping and Niosh methods. Based on the results of measurements in the field, there are 11 highest noise points which are above the noise level quality standard of Regulation Number Per.13/Men/X/2011 before control is carried out. The highest noise point is 106 dB at point 10. Based on noise level measurements, the length of exposure recommended by NIOSH varies, and depends on the measurement results obtained the longest exposure time allowed at point 10 is 34.2 minutes. This measurement point is closest to the noise source, so workers are required to use PPE in the form of ear plugs, ear muffs and safety hats. The PPE can reduce the amount of acoustic energy on the hearing mechanism of workers at PT Petrokimia Gresik.","PeriodicalId":17758,"journal":{"name":"Jurnal Serambi Engineering","volume":"34 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139339899","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Analisis Risiko Kecelakaan Kerja pada De-Pilling Machine After Autoclave Menggunakan Metode JSA dan Pengontrolan Risiko Menggunakan Metode HIRARC pada PT.XXX","authors":"Dhimas Indra Saputra, Deny Andesta","doi":"10.32672/jse.v8i4.5729","DOIUrl":"https://doi.org/10.32672/jse.v8i4.5729","url":null,"abstract":"PT XXX is one of the companies engaged in goods, more precisely the manufacture of fiber cement boards and wave boards. Every product that will be marketed will be packaged where the packaging is done in the De-pilling Machine after Autoclave (DMA) area. Not all DMA machines run automatically and are run by one person, there are still DMA machines that run manually, which still require the help of human labor, because when working in manual DMA the risk is great and is done by several people, so in this area risk analysis, risk identification, risk level determination, risk control and handling are needed as an effort to improve Occupational Health and Safety (K3). The method to be used is the Job Safety Analysis (JSA) method because this method focuses on identifying hazards in the work, then the hazards will be controlled by the Hazard Identification And Risk Control (HIRARC) method. From the analysis using the JSA method, 8 jobs were found to be at risk with an average risk level of Medium - High so risk control is needed for these 8 jobs. The work will be analyzed for hazards and controlled risks, the goal is to know the magnitude of the risk of work and prioritize controlling which jobs have the most significant risk and if possible, replace machines that are still manual with automatic machines to be more efficient, reduce risk and do not require many people.","PeriodicalId":17758,"journal":{"name":"Jurnal Serambi Engineering","volume":"3 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-09-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139340274","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Endro Prihastono, Antoni Yohanes, Firman Ardiansyah Ekoanindiyo
{"title":"Solar Corn Sheller Machine Design Based on Ergonomics Principles","authors":"Endro Prihastono, Antoni Yohanes, Firman Ardiansyah Ekoanindiyo","doi":"10.32672/jse.v8i4.6684","DOIUrl":"https://doi.org/10.32672/jse.v8i4.6684","url":null,"abstract":"The existing sheller machine on the market still uses diesel fuel and electricity, even though diesel fuel has increased. Solar is a non-renewable energy. In addition, there is a new modification of the corn sheller machine with solar power to replace diesel fuel. The fuel replacement is focused on the utilization of sunlight. This corn sheller machine can replace the use of fossil raw materials and electricity with solar power and obtain faster, more ergonomic product results. The data required in this study are body dimension data or shoulder height anthropometry in an upright standing position to determine the height of the corn sheller that will be done standing when the farmer does the corn shelling process. With the existence of a solar-powered corn sheller machine, it is expected to be more productive than before. The transition to the use of environmentally friendly (pollution-free) corn sheller machines so as to reduce air pollution that previously used motor engines with fossil fuels, namely diesel, corn farmers can understand about work comfort, are able to operate environmentally friendly corn sheller machines and can carry out maintenance procedures for solar corn sheller machines.","PeriodicalId":17758,"journal":{"name":"Jurnal Serambi Engineering","volume":"28 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139341134","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Usulan Perbaikan Layout Area Gudang Kering Logistik Menggunakan Metode Dedicated Storage di PT. Starfood International","authors":"M. S. Anam, Moch. Nuruddin, Hidayat Hidayat","doi":"10.32672/jse.v8i4.6665","DOIUrl":"https://doi.org/10.32672/jse.v8i4.6665","url":null,"abstract":"PT. Starfoood International is a medium-sized industry engaged in fish processing which is used for snacks that have been exported to foreign countries. The company has a warehouse size of 20 meters wide x 50 meters long. Currently, the company is experiencing problems related to the arrangement of goods that are less organized and the company itself does not apply good layout procedures, which has an impact on the process of picking up goods which takes a relatively long time. The special storage method is a layout preparation method, in which the storage of products is arranged according to the number of import and export operations in the shortest distance. Through the use of this method, finished products that need to be stored will occupy the right place, making it easier for employees to store and remove products for production so that product flows smoothly. From the results of calculations using the dedicated storage method in the warehouse, the factors that influence 4 factors are Box (frozen fish), Box (Surimih), plastic (frozen fish), plastic (Surimih), for goods that are often in and out of the product manufacturing process at the factory placed behind the production door so that it doesn't take a long time and the items are arranged neatly, the calculation of the dedicated storage method is able to provide closer distance changes and make it easier for employees to find items that are often used.","PeriodicalId":17758,"journal":{"name":"Jurnal Serambi Engineering","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-09-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139341535","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Muhammad Ivan Yudha Rifdhani, Hidayat Hidayat, Akhmad wasiur Rizqi
{"title":"Usulan Perbaikan Tata Letak Fasilitas Pada Area Produksi Menggunakan Metode From to Chart (Studi Kasus: PT. Ibrahim Bin Manrapi)","authors":"Muhammad Ivan Yudha Rifdhani, Hidayat Hidayat, Akhmad wasiur Rizqi","doi":"10.32672/jse.v8i4.6677","DOIUrl":"https://doi.org/10.32672/jse.v8i4.6677","url":null,"abstract":"An industry, both in the help and assembling areas, unquestionably has a few offices to help its creation cycle. Office design connects with the area, format, floor plan, equipment, and exercises related with the work environment. Different sorts of data from research led by finishing direct discernments and assessments made by areas on organizations taking part in the assembling of woven sarong materials at PT. Ibrahim Bin Manrapi which is situated on Jl. Malik Ibrahim Gresik, 24-26. in view of the discoveries of the examination of PT. In terms of format prior to design planning, PT. Ibrahim Bin Manrapi 's container is that there are still many areas that are not utilized to their full potential, and there are still many distances between offices that must be expanded as much as possible. From the technique for making the stream before the platform, there is a material conveyance distance of 102 m. Given the effect of information the board from the issues seen by PT. Ibrahim Bin Manrapi saw a lack in the plan so the gathering cycle went poorly and the conveyed item couldn't be anticipated to be great. This course of action should be possible by arranging the arrangement of the assembling office utilizing the From To Chart (FTC) procedure to restrict forward and backward during the assembling cooperation (Backtracking).","PeriodicalId":17758,"journal":{"name":"Jurnal Serambi Engineering","volume":"22 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-09-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139341476","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pramiati Purwaningrum, Astari Minarti, H. Yulinawati, Yolanda Thasya Jocelin
{"title":"Kajian Komposisi Sampah di Hotel Aston Kartika Grogol Jakarta","authors":"Pramiati Purwaningrum, Astari Minarti, H. Yulinawati, Yolanda Thasya Jocelin","doi":"10.32672/jse.v8i4.6106","DOIUrl":"https://doi.org/10.32672/jse.v8i4.6106","url":null,"abstract":"In order to reduce the volume of waste at the source, organic waste from restaurants namely food loss and food waste can be treated according to their characteristics. The purpose of the study is to determine the generation and composition of waste at Aston Kartika Hotel through the identification of the source of solid waste and analyze the composition of solid waste from each facility in Aston Kartika Hotel. The methodology of the research is carried out by undertaking the sampling of generation and waste composition in accordance with SNI 19-3964-1994. Aston Kartika Grogol Hotel with the source of solid waste from each facility. The total waste generation of Aston Kartika Grogol Hotel obtained from each facility amounting to 210.84 kg/day and the largest total waste generation of 81.84 kg/day coming from public areas. The largest fraction of waste composition was 35% of food waste and 17% of food loss which contributed organic waste by 52%. The most dominant type of inorganic waste was contributed by plastic waste consisting of types of HDPE, PVC, LDPE, PP, PES and PET. The composition of solid waste in Aston Hotel showed that 88% of hotel waste was suitable for recycling, while 12% of the total hotel waste was not suitable for recycling.","PeriodicalId":17758,"journal":{"name":"Jurnal Serambi Engineering","volume":"30 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-09-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139341612","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}