FORUM MEKANIKA
https://jrnl.itpln.ac.id/forummekanika
<p style="text-align: justify;"><span style="display: inline !important; float: none; background-color: #ffffff; color: #333333; font-family: Times new roman,serif; font-size: medium; font-style: normal; font-variant: normal; font-weight: 400; letter-spacing: normal; orphans: 2; text-align: justify; text-decoration: none; text-indent: 0px; text-transform: none; -webkit-text-stroke-width: 0px; white-space: normal; word-spacing: 0px;"><strong>Jurnal Forum Mekanika:</strong> Journal is a scientific journal published by Institut Teknologi PLN d/h. Sekolah Tinggi Teknik PLN jo<span style="display: inline !important; float: none; background-color: #ffffff; color: #000000; cursor: text; font-family: 'Noto Sans',Arial,Helvetica,sans-serif; font-size: 14px; font-style: normal; font-variant: normal; font-weight: 400; letter-spacing: normal; orphans: 2; text-align: left; text-decoration: none; text-indent: 0px; text-transform: none; -webkit-text-stroke-width: 0px; white-space: normal; word-spacing: 0px;">urnal, especially for Civil Engineering Lecturers and generally for all Practitioners to be able to contribute in the form of scientific writing that will be useful for the application of science and technology, especially in the field of Civil Engineering.</span> Journal has been </span><strong style="box-sizing: border-box; color: #333333; font-family: Times new roman,serif; font-size: 16px; font-style: normal; font-variant: normal; font-weight: bold; letter-spacing: normal; orphans: 2; text-align: justify; text-decoration: none; text-indent: 0px; text-transform: none; -webkit-text-stroke-width: 0px; white-space: normal; word-spacing: 0px;">Accredited </strong><span style="display: inline !important; float: none; background-color: #ffffff; color: #333333; font-family: Times new roman,serif; font-size: medium; font-style: normal; font-variant: normal; font-weight: 400; letter-spacing: normal; orphans: 2; text-align: justify; text-decoration: none; text-indent: 0px; text-transform: none; -webkit-text-stroke-width: 0px; white-space: normal; word-spacing: 0px;">by the </span><strong style="box-sizing: border-box; color: #333333; font-family: Times new roman,serif; font-size: 16px; font-style: normal; font-variant: normal; font-weight: bold; letter-spacing: normal; orphans: 2; text-align: justify; text-decoration: none; text-indent: 0px; text-transform: none; -webkit-text-stroke-width: 0px; white-space: normal; word-spacing: 0px;">National Journal Accreditation</strong><span style="display: inline !important; float: none; background-color: #ffffff; color: #333333; font-family: Times new roman,serif; font-size: medium; font-style: normal; font-variant: normal; font-weight: 400; letter-spacing: normal; orphans: 2; text-align: justify; text-decoration: none; text-indent: 0px; text-transform: none; -webkit-text-stroke-width: 0px; white-space: normal; word-spacing: 0px;"> (ARJUNA) managed by the Ministry of Research, Technology, and Higher Education of the Republic of Indonesia with Class Five (</span><strong style="box-sizing: border-box; color: #333333; font-family: Times new roman,serif; font-size: 16px; font-style: normal; font-variant: normal; font-weight: bold; letter-spacing: normal; orphans: 2; text-align: justify; text-decoration: none; text-indent: 0px; text-transform: none; -webkit-text-stroke-width: 0px; white-space: normal; word-spacing: 0px;"><a style="background-color: transparent; box-sizing: border-box; color: #4582ec; text-decoration: none;" href="http://sinta2.ristekdikti.go.id/journals/detail?id=4522" target="_blank" rel="noopener">SINTA 5</a></strong><span style="display: inline !important; float: none; background-color: #ffffff; color: #333333; font-family: Times new roman,serif; font-size: medium; font-style: normal; font-variant: normal; font-weight: 400; letter-spacing: normal; orphans: 2; text-align: justify; text-decoration: none; text-indent: 0px; text-transform: none; -webkit-text-stroke-width: 0px; white-space: normal; word-spacing: 0px;">) from 2018 to 2022 in accordance with the Decree</span><strong style="box-sizing: border-box; color: #333333; font-family: Times new roman,serif; font-size: 16px; font-style: normal; font-variant: normal; font-weight: bold; letter-spacing: normal; orphans: 2; text-align: justify; text-decoration: none; text-indent: 0px; text-transform: none; -webkit-text-stroke-width: 0px; white-space: normal; word-spacing: 0px;">. No. 85/ M / KPT / 2020.</strong></p> <p style="margin-bottom: 0in; line-height: 150%;" align="justify"><span style="font-family: Times new roman, serif;"><span style="font-size: medium;">T</span></span><span style="font-family: Times new roman, serif;"><span style="font-size: medium;">he journal registered in the CrossRef with </span></span><strong><span style="font-family: Times new roman, serif;"><span style="font-size: medium;">Digital Object Identifier (DOI) prefix</span></span></strong><span style="font-family: Times new roman, serif;"><span style="font-size: medium;">: <a href="https://search.crossref.org/?q=PETIR" target="_blank" rel="noopener"><span style="text-decoration: underline;"><strong>10.33322</strong></span></a></span></span></p> <p style="text-align: justify;"><strong>P-ISSN <a href="https://portal.issn.org/resource/ISSN/2356-1491#">2356-1491 </a>e-ISSN (electronics): <a href="http://issn.pdii.lipi.go.id/issn.cgi?daftar&1547693835&1&&" target="_blank" rel="noopener">2655-8211</a></strong></p>en-US[email protected] (Riki)[email protected] (Septian Rizki)Thu, 22 Aug 2024 00:00:00 +0000OJS 3.3.0.13http://blogs.law.harvard.edu/tech/rss60Kajian Teknis Dan Biaya Pekerjaan Facade Curtain Wall Unitized System Pada Proyek Bangunan Gedung
https://jrnl.itpln.ac.id/forummekanika/article/view/2500
<p><em>The façade curtain wall is a crucial component of a building, as it is the first to be influenced by external factors such as wind loads, rain, temperature, and light, thus determining the feasibility and market value of high-rise building projects. The construction process begins with design, aluminum structure analysis, fabrication, and on-site installation, all of which require special attention to achieve the desired results. Failure to do so may lead to structural failure, resulting in air and water leakage into the building's interior. This study aims to evaluate the technical and economic feasibility of the aluminum structure in façade curtain wall projects. The research methods include the analysis of moments, deflection, and shear strength in aluminum connections, as well as the calculation of unit costs. Technical data were obtained through structural testing using M6 A2-70 diameter pilot screws and M-10 and M-12 Grade A2/70 bolts and nuts in aluminum mullion connections. The results indicate that the moments and deflection in the aluminum structure are within the allowable limits, and the shear checks on the connections do not exceed the specified shear strength, signifying that the connections can safely bear the applied loads. Additionally, the unit cost calculation of Rp 621,836/m² demonstrates that the cost of aluminum façade work is efficient and below the industry standard average.</em></p>gita puspa artiani, Mochamad Sonhaji, Indriasari Indriasari
Copyright (c) 2024 FORUM MEKANIKA
https://jrnl.itpln.ac.id/forummekanika/article/view/2500Thu, 22 Aug 2024 00:00:00 +0000Analisis Penjadwalan Pada Proyek EPC Berbasis Critical Chain Management
https://jrnl.itpln.ac.id/forummekanika/article/view/2282
<p><em>Proyek konstruksi di Indonesia selain menggunakan kontrak konvensional, kontrak EPC (Engineering, Procurement, and Construction) juga sering digunakan untuk proyek pembangunan pembangkit listrik yang melibatkan banyak pihak. Praktik proyek EPC perlu menerapkan manajemen proyek untuk mencegah terjadinya keterlambatan. Pelaksanaan proses perencanaan (engineering) perlu dilakukan manajemen waktu proyek yang baik mengingat proses perencanaan merupakan tahap awal dari seluruh rangkaian aktivitas proyek EPC. Metode yang digunakan untuk menganalisa jadwal proyek EPC adalah manajemen buffer. Penelitian ini bertujuan untuk mengetahui durasi perencanaan (engineering) pada proyek EPC dan mengetahui selisih durasi penyelesaian engineering sebelum dan sesudah diterapkan manajemen critical chain. Dari hasil penelitian didapatkan durasi penjadwalan pada proses perencanaan (engineering) dengan manajemen critical chain dapat dilakukan lebih cepat dibandingkan dengan penjadwalan dengan CPM.</em></p>Pratiwi Setyaning Putri, Hastanto Hastanto, Tommy Iduwin
Copyright (c) 2024 FORUM MEKANIKA
https://jrnl.itpln.ac.id/forummekanika/article/view/2282Thu, 22 Aug 2024 00:00:00 +0000Stabilitas Bendung Pengelak Pada Bendungan Karedok Sumedang
https://jrnl.itpln.ac.id/forummekanika/article/view/2624
<p><em>A cofferdam is a type of dam that functions as a diversion or deflection barrier to keep the construction area, which is in contact with water, dry. Although cofferdams are often referred to as temporary dams, their design must take into account factors such as seepage and the slope stability of the cofferdam body to prevent failure. The analysis of cofferdam slope stability is adjusted based on the water level conditions and the slope or body of the cofferdam. In the analysis conducted, the stability of the cofferdam was evaluated using both manual calculations and the Geo5 application, employing the Fellenius method. The results obtained from the analysis showed that the highest safety factor from the manual calculations using the Fellenius method was 2.88 under empty conditions on the downstream side, while the lowest safety factor was 1.38 under rapid drawdown conditions with an earthquake on the upstream side. Meanwhile, the highest safety factor obtained using the Geo5 application with the Fellenius method was 1.55 on the upstream side, and the lowest safety factor was 1.36 under rapid drawdown conditions on the downstream side.</em></p>Dyah Pratiwi Kusumastuti, John Paulus Pantouw, Sajiharjo Sajiharjo, Alviani Febrisa Rahmadhita
Copyright (c) 2024 FORUM MEKANIKA
https://jrnl.itpln.ac.id/forummekanika/article/view/2624Thu, 22 Aug 2024 00:00:00 +0000Penambahan Serbuk Cangkang Kerang Terhadap Perubahan Nilai CBR Laboratorium Lempung Lunak
https://jrnl.itpln.ac.id/forummekanika/article/view/2512
<p><em>Coastal area development is one of the efforts to improve the socio-economic conditions of the community. To realize this development, adequate supporting infrastructure is needed. However, in the implementation of infrastructure development, problems are often encountered, such as the type of soil in coastal areas being predominantly soft clay. Soft clay is a type of soil that often causes construction failures due to its low bearing capacity and shear strength. To improve these characteristics, chemical stabilization can be carried out by adding other materials. In this study, chemical stabilization was performed on soft clay soil using shell powder, which contains lime and thus acts as a pozzolan. The shell powder added to the soft clay varied from 5%, 10%, 15%, to 20%. Changes in the characteristics of the soft clay due to chemical stabilization were observed from the changes in consistency limits and California Bearing Ratio (CBR) values. Based on the test results, changes in the characteristics of the soft clay were obtained. With the addition of shell powder, the liquid limit value decreased with the largest difference being 12.40%. This is in contrast to the plastic limit and shrinkage limit values, which increased with the addition of shell powder. The change in laboratory CBR values showed an increase up to the addition of 10% shell powder and then gradually decreased with the addition of 15% and 20% shell powder.</em></p>Dyah Pratiwi Kusumastuti, Nuzul Hidayat
Copyright (c) 2024 FORUM MEKANIKA
https://jrnl.itpln.ac.id/forummekanika/article/view/2512Thu, 22 Aug 2024 00:00:00 +0000Penambahan Limbah Kerak Boiler Kasar dan Halus pada Beton sebagai Substitusi Pasir dan Bahan Tambah Semen
https://jrnl.itpln.ac.id/forummekanika/article/view/2392
<p><em>Negara agraris terbesar di dunia diantaranya Indonesia yang mempunyai kekayaan alam dari hasil perkebunan termasuk perkebunan kelapa sawit. Sumatera Selatan merupakan penghasil kelapa sawit ke 6 di Indonesia, berdasarkan Badan Pusat Statistik Provinsi Sumatera Selatan pada tahun 2021memproduksi kelapa sawit sebanyak 658.612,00 ton/tahun. Dengan produksi kelapa sawit yang besar, maka limbah kelapa sawit berupa kerak boiler yang dihasilkan juga cukup banyak. Penelitian ini akan memanfaatkan limbah kerak boiler yang kasar dan halus dari hasil pembakaran kelapa sawit untuk bidang konstruksi. Dengan memanfaatkan kerak boiler hasil pembakaran limbah kelapa sawit digunakan sebagai bahan pengganti agregat halus dan bahan tambah sebagai semen pada campuran beton untuk menekan penggunaan material pasir dan semen pada pembuatan beton. Dilakukan pengujian beton substitusi kerak boiler dengan variasi 0%, 5%, 10%, 15%, 20% dari berat agregat halus dengan penambahan abu boiler sebesar 15% dari berat semen dan beton normal sebagai pembanding. Berdasarkan pengujian kuat tekan pada 28 hari pada beton normal 25,194 MPa sedangkan variasi kerak boiler dengan penambahan abu boiler diperoleh nilai kuat tekan rata-rata sebesar 23,96 MPa, 24,06 MPa, 25,76 MPa, dan 21,98 MPa. </em><em>Absorpsi diperoleh masing-masing 6,916%, 9,375%, 9,825%, 9,695%, 5,895% dan 5,110%. </em></p>Tri Yuhanah, Devita Mayasari
Copyright (c) 2024 FORUM MEKANIKA
https://jrnl.itpln.ac.id/forummekanika/article/view/2392Thu, 22 Aug 2024 00:00:00 +0000Upaya Konservasi Air dengan Teknologi Pemanenan Air Hujan untuk Pemenuhan Kebutuhan Air Domestik yang Berkualitas
https://jrnl.itpln.ac.id/forummekanika/article/view/2597
<p style="font-weight: 400;"><em>Ketersediaan air tanah menurun drastis akibat penggunaan air tanah yang berlebihan. </em><em>Indonesia sebagai negara tropis </em><em>memilikicurah hujan yang cukup </em><em>tinggi sepanjang musim hujan. Persoalan utama penelitian ini adalah curah hujan yang belum dimanfaatkan secara maksimal sehingga hanya </em><em>mengalir menjadi limpasan. Teknik pemanenan air hujan dapat dilakukan dengan menggunakan talang yang dipasang pada atap bangunan, berfungsi sebagai alat untuk mengarahkan aliran air hujan dari atap menuju tempat penampungan. </em><em>Yang ditawarkan dari penelitian ini adalah</em><em> nilai dan variabel parameter air dalam studi kasus pelaksanaan penelitian</em><em>. Penelitian </em><em>dilakukan pada hunian di Jakarta. Bangunan itu punya</em><em> Luas atap </em><em>70 m</em><em><sup>2</sup> dengan curah hujan rata-rata harian sebesar </em><em>11,71 mm/hari</em><em>. Dengan demikian potensi air hujan yang dapat ditampung </em><em> pada musim hujan</em><em> sebanyak </em><em>3,07 m</em><em><sup>3</sup>/bulan. Kualitas air hujan dianalisis berdasarkan beberapa parameter </em><em>yaitu pH </em><em>6,0, suhu 27,3</em><em>°C</em><em>, kekeruhan </em><em>4,74 NTU, total padatan terlarut </em><em>68 mg/l</em><em>, besi terlarut <0,01, timbal terlarut tidak terdeksi, total coliform </em><em>32 </em><em>APM/100 ml, </em><em>E Coli 0 APM/100 ml, kesadahan total 36 mg/l</em><em>. Pengujian hasil penelitian ini </em><em>adalah baku mutu air sesuai dengan peraturan Menteri Kesehatan RI nomor</em><em>32 Tahun 2017. Hasil pengujian menunjukkan bahwa air hujan dapat langsung dimanfaatkan untuk keperluan </em><em>domestik masyarakat.</em></p>Endah Lestari, Muhammad Sofyan, Arief Suardi Nur Chairat
Copyright (c) 2024 FORUM MEKANIKA
https://jrnl.itpln.ac.id/forummekanika/article/view/2597Thu, 22 Aug 2024 00:00:00 +0000