9 research outputs found
THE ANALYSIS CAUSE OF CASTING REPAIR WORK WITH PARETO CHART IN PROJECT X
Get PDFConstruction projects are inseparable from their unique management. The unique management of construction projects makes it difficult to maintain their quality. One of the tools to measure quality in project management is the Pareto chart. Pareto chart is a statistical technique that is usually used for decision making based on the frequency of events compared to the causes of events. This research was conducted to analyze the causes of repair work on project X by using Pareto chart. The conceptual framework used in this study is based on two approaches, namely literature and field observations. The main literature for analysis is the Pareto chart then field data collection on each component first which is then categorized based on the type of work. After the data is categorized, a Pareto chart will be made from the data. The processing results obtained two dominant types of errors in the casting work, namely cracks and unevenness of the casting results. Cracks and unevenness of the casting results can be overcome by the chipping method then followed by grouting if necessary. The chipping method is used to repair porous concrete or flatten the casting if it swells, and the grouting method to fill cracks and chipping results with a mixture of cement and water until the surface becomes flat and the casting work results are better
IDENTIFICATION OF PRODUCTIVITY VALUES USING THE METHOD PRODUCTIVITY DELAY MODEL ON WALLER BEAM WORK
Get PDFProductivity can be interpreted as a comparison between physical output and real output with the actual input. This research aims to identify labor productivity on waller beam installation work in construction projects using the Method Productivity Delay Model (MPDM). The research method is carried out by conducting direct observations in the field and collecting productivity data using MPDM which is applied through delay analysis in the production cycle, techniques for evaluating work team balance and ensuring optimal labor allocation. The results showed that several factors, such as the environment contributing to the waller beam installation contributed 0.04, equipment factor contributed 0.21, labor factor contributed 0.36, material factor contributed 0.15, and management by 0.02 contributed to the delay and lower productivity. Ideal productivity was obtained at 1.737 units/s, overall productivity at 1.486 units/s, and % Achieved Productivity based on Ideal Productivity at 85.54%. In addition, the findings also emphasize the importance of proactive planning and real-time monitoring to reduce productivity losses and improve construction project performance
Analisis Tingkat Kebutuhan Pekerja Level Menengah Proyek Konstruksi (Studi Kasus: 3 Proyek Gedung di Jakarta Barat)
Get PDFThe motivation of the workers influences the results of project work. The cause can be identified by knowing the level of needs of the workers. One way to find out the level of needs of workers is with Abraham Maslow's theory of needs. Abraham Maslow's ranking of needs consists of 5 levels of basic human needs, sequentially from the lowest level, namely physiological needs, safety, love and affection, esteem, and self-actualization. This study aims to analyze the level of needs for mid-level construction workers at Building Project in West Jakarta which affects the motivation of construction project workers. The research method used is a questionnaire to middle-level workers from three project. Data processing and literature analysis were carried out when the questionnaire indicators based on the literature were obtained on the 5 needs ratings. The results obtained from the questionnaire are that the most influential need factors for middle-level workers are support from family to workers, bonuses, good health programs, relations between co-workers, and overtime pay increased. By improving communication on the factors of need for support from family and good relations between co-workers, rewards on the factors of bonuses and overtime pay, last is guarantees a good health program on the factors of the work environmentMotivasi para pekerja mempengaruhi hasil pekerjaan proyek. Penyebabnya dapat diketahui dengan mengukur tingkat kebutuhan pekerja. Salah satu cara untuk mengetahui tingkat kebutuhan pekerja adalah dengan teori kebutuhan Abraham Maslow. Pemeringkatan kebutuhan Abraham Maslow terdiri dari 5 tingkat kebutuhan dasar manusia, berurutan dari tingkat yang paling bawah, yaitu kebutuhan fisiologis, rasa aman, cinta dan kasih sayang, harga diri, dan aktualisasi diri. Penelitian ini bertujuan untuk menganalisis tingkat kebutuhan pekerja konstruksi tingkat menengah pada 3 Proyek Gedung di Jakarta Barat yang mempengaruhi motivasi pekerja proyek konstruksi. Metode penelitian yang digunakan adalah kuesioner kepada pekerja tingkat menengah dari tiga proyek. Pengolahan data dan analisis literatur dilakukan ketika diperoleh indikator angket berdasarkan literatur terhadap 5 penilaian kebutuhan. Hasil yang diperoleh dari kuesioner adalah faktor kebutuhan yang paling berpengaruh pada pekerja tingkat menengah adalah dukungan dari keluarga kepada pekerja, bonus, program kesehatan yang baik, hubungan baik antar rekan kerja, dan upah lembur yang dibayarkan. Peningkatan komunikasi pada faktor perlunya dukungan dari keluarga dan hubungan baik antar rekan kerja, penghargaan pada faktor bonus dan upah lembur, terakhir jaminan program kesehatan yang baik pada faktor lingkungan kerja dapat meningkatkan motivasi para pekerjanya
FATIGUE LIFE SIMULATION OF CONCRETE PAVEMENT STRUCTURE WITH NANOMATERIAL CONCRETE SLAB IN TROPICAL ENVIRONMENT
Get PDFRecent studies on nanomaterial concrete in Indonesia have demonstrated improvements in mechanical properties, particularly in the context of fatigue life for concrete road pavements. While traditional designs focus primarily on traffic axle loads, curling stress from temperature differentials also plays a significant role. Previous research using 3D finite element analysis (FEA) software, such as EverFE2.26, showed that the tensile and curling stresses matched those calculated by established methods like Westergaard and Bradbury. This research uses a mechanistic approach and 3D finite element analysis (FEA) software for simulations. A literature review gathered data on the mechanical properties of nanomaterial concrete. After inputting all required parameters, EverFE2.26 performed a stress analysis, allowing for the calculation of concrete pavement fatigue life. The simulation showed that temperature differential greatly impacts the fatigue life of concrete pavements in tropical environments like Indonesia. Nevertheless, nanomaterial concrete could be a promising option to reduce those impacts if its strength can be further improve
APPLICATION OF VALUE ENGINEERING IN ARCHITECTURAL WORK ON THE LAHAIROI LATERI CHURCH, AMBON CITY
Get PDFEffective construction cost control such as saving construction costs will increase the chances of project success and user satisfaction. The biggest component in construction costs is material. High material costs necessitate a review of building functions. Construction savings are made by reviewing the largest cost components in architectural work. Review of material components is carried out using the value engineering method. Value engineering is a method for getting an alternative picture so that the costs incurred are more efficient than the initial planning costs. The application of value engineering to construction projects has a major impact on planning by generating reviews to obtain cost effectiveness. Research was conducted at the Lahairoi Lateri Church Building project located in Ambon City. The aim of this research is to find alternative material substitutes for architectural work and obtain total cost savings by using the concept of value engineering. The use of the value engineering concept is carried out by information phase, analyzing the function of using index function analysis techniques, identifying alternative materials, and evaluating the results of the alternative materials. Research using the value engineering concept on the Lahairoi Lateri Church Building Construction project, Ambon City achieved cost savings of 861,116,841.05 IDR. This amount saves 5.32% of the initial architectural work costs of 16,170,539,500 IDR. These results show that value engineering can eliminate unnecessary costs in church-type building without changing the building function
Penerapan Konsep Just In TIME pada Proyek Renovasi Gedung CITIE/CIBE/CADL ITB
Get PDFSistem manajemen mutu penting untuk diterapkan pada proyek konstruksi mengingat bahwa hal ini terkait dengan kepuasan stakeholders. Pengelolaan mutu dapat dijalankan melalui Total Quality Management (TQM) yang mencakup segala aspek kegiatan kontraktor yang harus dikelola dengan benar agar mutu hasil pekerjaan dapat memuaskan stakeholders. Pada TQM, terdapat konsep Just in Time (JIT) yang merupakan keseluruhan filosofi dalam operasi manajemen dimana segenap sumber daya dibutuhkan dengan tujuan untuk meningkatkan produktivitas dan mengurangi pemborosan. JIT adalah konsep dengan sasaran utama untuk menghasilkan produk tertentu yang diperlukan dalam jumlah yang dibutuhkan pada saat yang tepat. Makalah ini akan membahas mengenai penerapan JIT pada proyek renovasi beberapa gedung di lingkungan Kampus Institut Teknologi Bandung (ITB). Desain yang diberikan untuk proyek adalah sistem JIT dimana kontraktor dan supplier terlebih dahulu dijadwalkan tentang pengiriman materialnya dan perkiraan produktivitas pekerjaannya. Dari hasil penelitian didapatkan bahwa untuk mengendalikan persediaan antisipasi dan fluktuasi, konsep JIT dapat menjalankan mekanisme persediaan yang mampu memenuhi keterbatasan dan kelangkaan persediaan. Konsep JIT melibatkan seluruh aspek dan segenap sumber daya manusia yang ada sebagai satu kesatuan yang memiliki tanggung jawab bersama dalam meningkatkankan efisiensi dan produktivitas
Penerapan Konsep Value Engineering pada Proyek Bangunan Gedung Sekolah
Get PDFAspek biaya pada proyek konstruksi sangat beragam seperti overbudget, overtime, dll yang dikelompokkan sebagai unnecessary cost. Konsep value engineering dapat mengoptimalkan unnecessary cost tersebut. Value engineering adalah teknik untuk menganalisis fungsi pekerjaan atau proses untuk menentukan "nilai terbaik", atau hubungan terbaik antara nilai dan biaya. Penelitian ini bertujuan untuk menerapkan value engineering pada proyek bangunan gedung sekolah dengan studi kasus Madrasah Ibtidaiyah Negeri 3 Gunungsitoli. Value engineering terdiri atas tahap persiapan, tahap analisis fungsi, tahap kreatif, tahap evaluasi, dan tahap rekomendasi. Tahap persiapan menggunakan prinsip pareto untuk mengetahui pekerjaan yang bernilai besar untuk dilakukan value engineering. Tahap analisis fungsi untuk memilah material utama dan material pendukung, serta memperhitungkan cost/worth dari pekerjaan tersebut. Tahap kreatif adalah tahap pencarian material alternatif yang dapat menggantikan tanpa merubah fungsi. Tahap evaluasi dilakukan untuk menghitung nilai terbaru dari tiap alternatif material. Terakhir tahap rekomendasi untuk merekomendasikan alternatif material dengan biaya yang paling kecil. Kebutuhan data penelitian adalah Rencana Anggaran Biaya (RAB), Analisis Harga Satuan (AHS) pekerjaan, serta data material dari perencana yang diaplikasikan konsep value engineering. Hasil akhir didapatkan efisiensi biaya perencanaan bangunan gedung sekolah sebesar Rp244.531.582,00 atau 3,76% dari total nilai awal proyek
Analysis of the Cinapel Bridge’s Construction Operations using Simulation
Get PDFSimulation has been well known as an effective technique that enables planning and analysis of a construction operation to be performed in advance anticipating problems of efficiencies that would occur in the implementation phase. Therefore, simulation technique could be used to design resources associated with a construction operation to be optimal and to analyze an ongoing operation to be evaluated and refined. This paper discusses the use of simulation to analyze several construction operations, i.e., bored piles, pile caps, piers, and girders, that will be used in building the Cinapel’s Bridge at the Cisumdawu Toll Road Project. The simulation using WebCYCLONE was utilized to determine the most optimal resources needed in each construction operation; resources needed to gain the highest productivity and the lowest wastes. Data of each operation for simulation were gathered from the field, as well as opinions from the practitioners related to the project. The results of the simulation are presented and recommendations are made for the contractor to refine the on-going construction operations as well as to design construction operations before the implementation in the fields
