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Analisis Numerik Sambungan Bolted Extended End Plate (BEEP) Menggunakan Program Bantu ANSYS
Get PDFGempa bumi Northridge tahun 1994 menyebabkan kerusakan signifikan pada bangunan struktur baja, khususnya pada sambungan, dengan retakan yang sering muncul pada area las, dalam kasus yang parah, menjalar ke sayap dan badan kolom. Studi ini mengevaluasi perilaku sambungan Bolted Extended End-Plate (BEEP) di bawah pembebanan siklik, dibandingkan dengan hasil eksperimen Shi dkk. dengan menggunakan perangkat lunak ANSYS. Evaluasi berfokus pada kapasitas momen, kapasitas rotasi, dan mode kegagalan. Hasil dari Shi dkk. menunjukkan kapasitas momen dan rotasi masing-masing sebesar 320,10 kN-m dan 3,5%. Hasil numerik menunjukkan kapasitas momen dan rotasi sebesar 327,86 kN-m dan 4,3%, dengan tingkat akurasi sebesar 2,37%. Pola kegagalan dalam model numerik mendekati dengan hasil eksperimen. Oleh karena itu, model numerik telah tervalidasi dari hasil eksperimen
INTEGRATION, RELATION, AND RECREATION: RETHINKING ARCHITECTURAL PROGRAMMING
Get PDFThis study rethinks architectural programming as an innovative process, emphasizing the integration of contextual elements, the relational blending of multiple functions, and the adaptive reuse of existing spaces as recreation over time. Moving beyond the traditional understanding of programming as problem-finding-solving, this research redefines it as a dynamic framework bridging theoretical insights and practical design applications. Through a qualitative case study methodology, the paper examines three landmark projects with similar functions by Bjarke Ingels Group—8 House, The Mountain, and Urban Rigger—to explore the transformative potential of programming. The analysis positions programming as an integrative tool that aligns spatial, functional, and contextual dynamics to address both immediate and future architectural challenges. Program mixing with relational functions is conceptualized as a strategic approach that harmonizes diverse functions within a single design, fostering innovative and hybrid solutions. Adaptive reuse, reframed as a multi-time design response, focuses on revitalizing existing structures to meet evolving societal and environmental needs. These case studies illustrate how programming establishes a dynamic framework that enables architects to creatively reimagine constraints as opportunities. By emphasizing the principles of design analysis—realization, organization, and integration—this research contributes to the discourse on programming as a catalyst for architectural innovation and transformation. It proposes a shift in practice that highlights programming as a generative and responsive framework, inspiring a rethinking of architectural methodologies in the face of contemporary challenges
Sensitivity Analysis of Calibration in the Water Evaluation And Planning (WEAP) Model for Water Resource Management in Keyang, Slahung, Sungkur Watershed
Get PDFWater availability becomes an important issue as the population increases due to limited water resources not proportional to the increasing demand. The Keyang, Slahung, and Sungkur sub-watersheds in Ponorogo Regency, East Java, face drought during the dry season and flooding during the wet season. This research aims to analyse water availability by considering irrigation needs and cropping patterns, and provide recommendations for the allocation of water supply from surface water for efficient use in the next 30 years. Water Evaluation And Planning (WEAP) application was used for the analysis, with trial and error method to adjust the parameter values. The optimum parameter values obtained were Z1 = 0, Z2 = 0, DWC = 1000, DC = 100, RRF = 2, RZC = 300, SWC = 1000, and PFD = 0.05. Based on these optimum parameters, the model interpretation of NSE is 0.825 (good category), RMSE 11.923 (good enough category), PBIAS 40.152 (good enough category), R2 (medium influence category), and MAPE 0.873 (very accurate category). This model shows that the simulation results reflect the actual existing conditions
Analytical Investigation of The Performance of Fluid Viscous Damper and Lead Rubber Bearing Isolator on A Multi-Storey Building
Get PDFEarthquakes are devastating natural events that can cause substantial structural damage, often resulting in collapses due to inadequate seismic design. This study investigates the effectiveness of two seismic protection systems: fluid viscous damper (FVD) and lead rubber bearing (LRB) isolation, in improving the seismic performance of a structure. The initial research did not include any base isolator or link damper for earthquake protection. The results were then compared to a similar investigation of the same structure using FVD and LRB isolation. Significant differences in structural behavior were observed, with both systems demonstrating improved performance in mitigating seismic forces. The findings highlight the importance of incorporating advanced damping mechanisms, such as FVD and LRB, in building design to enhance earthquake resilience in prone regions. This study underscores the critical need for integrating such seismic protection systems to reduce structural damage and improve safety during earthquakes
Barriers to Social Sustainability in Residential Building Construction in Afghanistan
Get PDFAlthough socially sustainable buildings are becoming increasingly popular worldwide, past studies indicate that when policymakers support sustainable building development, the social dimension is often given less attention or is entirely disregarded. There is not much research that focus on the challenges of socially sustainable buildings in Afghanistan. This research investigated the factors that hinder implementation of social sustainability in residential building construction. The study collected data from construction professionals and employed Exploratory Factor Analysis (EFA) and Varimax for analysis. The findings are critically analysed and discussed. The results indicate that there are six underlying factors for the barriers to socially sustainable building construction in this context. Among these barriers, lack of urban planning, awareness, and economic incentives are rated as the greatest impediments to social sustainability in residential buildings. The primary goal of this study is to reduce the barriers’ dimensionality to make it easier for practitioners to overcome challenges. Moreover, to inform decision-making in the industry and encourage the adoption of more socially sustainable construction practices
Integrity Assessment of Dented Aboveground Steel Storage Tank After Hydrostatic Testing
Get PDFThis paper presents a comprehensive structural integrity assessment of a 50,000-kiloliter aboveground steel storage tank that experienced shell denting during hydrostatic testing. Dents and geometric imperfections are known to significantly affect the buckling behavior and load-bearing capacity of storage tanks. To evaluate the tank’s fitness for service (FFS), a Level 3 assessment was conducted following API 579-1/ASME FFS-1 Part 8 standards. Finite element analysis was employed to simulate the elastic stress distribution and fatigue behavior under various loading conditions, including hydrostatic pressure, wind, and seismic loads. Results revealed that shell course 7 and 8 experienced stress increases of up to 2282% compared to the undistorted condition, with von Mises stress remaining below the allowable limits. A fatigue analysis confirmed that stress amplitudes were below the fatigue threshold, resulting in infinite fatigue life. Furthermore, discharge simulation indicated that improper dewatering could induce external pressure exceeding the material’s yield strength, leading to localized plastic deformation. Nevertheless, the dented tank was found to be structurally sound and compliant with API 650 and API 579-1/ASME FFS-1 criteria. The study highlights the importance of proper discharge procedures and confirms that no immediate repair is required for continued safe operation of the tank
Perancangan Desain Interior Yesaya Healthy Reflexology & Family Massage dengan Konsep Serenity Nature
Get PDFRefleksi pijat merupakan pelayanan yang bertujuan sebagai pemulihan bagi kondisi tubuh yang kurang nyaman, lelah, dan sakit. Kondisi kehidupan modern pada Ibu Kota saat ini membuat berbagai masalah kesehatan muncul pada lingkungan masyarakat. Kehidupan ibu Kota yang sibuk, aktivitas di perkantoran, aktivitas yang membutuhkan banyak pergerakan dan tenaga tubuh, dan aktivitas sehari-hari dapat menyebabkan tubuh lelah secara fisik dan pikiran. Refleksi pijat dibuat untuk membantu masyarakat dalam pemulihan tubuh, masyarakat yang lelah, mengalami pegal, dan sakit dapat menggunakan peelayanan pijat refleksi untuk membantu penyembuhan. Pada perancangan ini ruang yang diharapkan adalah ruangan dengan konsep natural yang memberikan suasana ketenangan alam sehingga pengunjung dapat menerima pelayanan refleksi sembari merasakan suasana alam pada ruangan. Penelitian ini ditujukan untuk penyusunan Tugas Akhir dengan judul “Perancangan Desain Interior Yesaya Healthy Reflexology & Family Massage” yang dapat memberikan fasilitas dan suasana desain yang unik bagi pengunjung. Rosemary Kilmer. Menurut Rosemary Kilmer proses desain terbagi menjadi dua tahap. Tahap pertama yaitu analisis, pada tahap ini masalah diidentifikasi, dibedah, ditelaah, diteliti, dan dianalisis.Kata kunci: Pijat; Refleksi; Spa; Saun
ANALISIS GETARAN MEKANIS PADA PELAT DAN BALOK DI AREA GEDUNG PARKIR BERTINGKAT
Get PDFPenelitian ini difokuskan untuk menentukan kenyamanan pelat dan balok pada gedung parkir bertingkat sesuai standar ISO 2631 2022. Pembebanan yang diterapkan pada penelitian ini adalah pada saat mobil diam dan bergetar. Dua metode yang diterapkan dalam penelitian ini yaitu metode eksperimental dan numerik. Pada metode eksperimen diperoleh frekuensi alami pelat dan balok sebesar 6,15 Hz dengan percepatan 0,01436 m/s2, sedangkan pada analisis diperoleh frekuensi alami pelat dan balok sebesar 5,98 Hz dan percepatan 0,018872 m/s2. Perbandingan hasil eksperimen dan numerik untuk seluruh skenario adalah sekitar 12%, sehingga analisis pemodelan dengan aplikasi berbasis teknik sipil dapat digunakan untuk penguatan sebagai rekomendasi. Penguatan dilakukan dengan menambahkan kekakuan berupa IWF 300 x 150 x 6,5 (mm) pada arah x dan y. Tulangan dengan arah y (5 m) lebih efektif dan efisien dibandingkan dengan arah x (8 m) karena dapat meningkatkan frekuensi alami pelat sebesar 58% dan menurunkan percepatan sebesar 33%
Constructing of Decent Work Index of Regency/City in Indonesia and its Influencing Factors
Get PDFCurrently, there are still many workers in Indonesia who obtain low-quality or inappropriate jobs. This can be seen from inadequate wages, non-standard working hours, and low labour productivity. In fact, decent work is very important to reduce poverty and achieve sustainable development. Therefore, this study aims to develop a comprehensive measure of decent work, the Decent Work Index (DWI), for each regency/city in Indonesia. The DWI is compiled based on the ILO indicator framework using factor analysis method in accordance with the stages of index compilation by the OECD. In addition, this study also uses multiple linear regression to analyze the influence of education and the development of information and communication technology on decent work conditions. The results show that nine indicators are divided into three factors, namely full and productive work, rights at work, and equal opportunity and treatment in employment. Denpasar City is the city with the highest DWI, and Mamberamo Raya Regency is the regency with the lowest DWI. Meanwhile, the results of multiple linear regression shows that Mean Years of Schooling (MYS), the percentage of individuals using computers, and the percentage of individuals using e-commerce can increase the DWI
Handling Selection of Settlement and Embankment Stability Issues Based on Variations in Embankment Height and Soft Subgrade Thickness Case Study: Pekanbaru Junction - Pekanbaru Bypass Sta. 176+775 - Sta. 176+975
Get PDFTrans Sumatra Toll Road (JTTS) is one of the most important infrastructure projects in Indonesia. One of the main sections of JTTS is the Rengat - Pekanbaru Toll Road, Pekanbaru Ring Section (Pekanbaru Junction - Pekanbaru Bypass). Existing conditions at Sta 176+775 - Sta 176+975 are dominated by oil palm plantations with soft soil layers in the form of organic soil to a depth of 1.0 meter; the layer below is clay with medium to stiff consistency. The existing treatment plan is preloading embankment with PVD and 1,0 m deep subgrade replacement. In this study, alternative planning calculations were carried out with variations of subgrade replacement up to 0.5 m and 1,0 m thickness. The study results show that the most cost-optimal treatment design is the treatment design without replacement with geotextile reinforcement. The thicker the subgrade replacement, the smaller the compression and rate of settlement. In terms of embankment reinforcement, the thicker the subgrade replacement, the less reinforcement is required. The thickness of subgrade replacement also affects the cost of the work, the thicker the subgrade replacement, the higher the cost of the work