International Journal of Engineering Science and Technology Development (IJEST)
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Seismic Assessment of RC Building Using Pushover Analysis
Full text linkCurrent research works indicated that parts of Kingdom of Saudi Arabia have low to moderate seismic regions. For structural engineers, seismic load should be considered as important aspect that needs to be included in the building design. However Major part of buildings are designed for gravity loading only and poorly detailed to accommodate lateral loads. The purpose of this paper is to investigated gravity supporting building its resistance to expected seismic loading in different regions (Makkah, Jeddah, Gizan and Haql). In this paper, a test RC building that was designed for gravity loading only is investigated. This will be accomplished by performing the nonlinear static analysis (pushover analysis) according to ATC 40. Pushover analysis produces the pushover curves, capacity spectrum, plastic hinges and performance level of the building. This analysis gives better understanding seismic performance of buildings and also traces the progression of damage or failure. The building performance level is determined by intersection of demand and capacity curves and the hinge developed in the beams and the columns. The results show that the test building is found inadequate for Haql region and it still can be considered for Makkah, Jeddah and Gizan
Message from the Chief Editor
Full text linkWelcome to the Second Issue of International Journal of Engineering Science and Technology Development (IJEST) on August 2013. In this issue of IJEST, we present to our readers selected articles related to Engineering, Science and Computer and Tehnology. Five papers are presented from Indonesia, Malaysia, Japan and Australia.The first article by Dr. Wamiliana from Lampung University, Indonesia and Prof. Dr. Louis Caccetta from Curtin University of Technology, Australia with the title: The Modified CW1 Algorithm For The Degree Restricted Minimum Spanning. The second article by Dr. Ibrahim, G.A., Arinal, H., from Lampung University, Indonesia and Zulhanif from National Univerisity of Malaysia, Malaysia and Haron,C.H.C from University Kebangsaan Malaysia with the title: Microstructure Alterations of Ti-6Al-4V ELI during Turning by Using Tungsten Carbide Inserts under Dry Cutting Condition. The third article by Dr. Rudi Irawan, Dr. Afzeri Tamsir and Dr. Riza Muhida from Surya University, Indonesia with the title: Indonesia’s Challenge to Combat Climate Change Using Clean Energy. The fourth article by Fritz Akhmad Nuzir, Haris Murwadi from Universitas Bandar Lampung, Indonesia and Prof. Bart Julien Dewancker from University of Kitakyushu, Japan with the title: The Importance of Education Facility as Sustainable Urban Generation Tool. The fifth article by Marzuki, Agus Sukoco, Lisa Devilia and Maria Shusanti F from Bandar Lampung University, Indonesia with the title: Analysis Web-Education Based on ISO/IEC 9126-4 for the Measurement Quality of Use.With these selections I sincerely hope that everyone has something to gain from this issue and thank you to article contributors and reviewers for making this issue possible. To all prospective author, we are welcome and please sent your article to the editors
The Importance of Education Facility as Sustainable Urban Generation Tool
Full text linkEducation value has always been a part of urban development since the age of ancient Greece, Rome, India, and China. It is recognized as the changing factor into a civilization society. Every society in the world has at least the simplest form of education which is at home. Meanwhile many others have been utilizing this value to a greater purpose of the community through the development of education facilities. One of the education facilities that contribute substantially to the development of an urban area is higher education institute or university.According the Brundtland Commission, sustainable development is development that meets the needs of the present without compromising the ability of future generations to meet their own needs. Therefore a sustainable urban generation tool is a feature that is expected to generate the development of an urban area in order to meet the definition above. Sustainable development has many criteria such as economy (growth of annual income), social (growth of public participation and awareness), and the most important, environment (growth of facility/infrastructure and ecological management). Japan as a country which has limited natural resources, has been experiencing aging population and declining on birthrate. Therefore in order to maintain its economic growth, Japan is using its science and technology advantages as its main generator. Meanwhile, it is acknowledged that science and technology are the outcomes of education process. So at the end of the day, education in Japan plays important roles in the development of the economy and the society. This paper aims to acknowledge the importance of education facility as sustainable urban generation tool by studying the development of the economy, social, and environment of the case study area which is the Kitakyushu Science Research and Park in Kitakyushu (Japan)
Indonesia’s Challenge to Combat Climate Change Using Clean Energy
Full text linkIndonesia as the biggest archipelago country and situated in equator is very vulnerable to the adverse effect of climate change. There are two main categories of efforts to handle the issues in climate change; that are how to mitigate it and how to adapt to the change. One of the main culprits of climate change is the emission of carbon gas due to fossil fuel energy utilization contributing 302 million tonnes CO2equivalent.President of the Republic of Indonesia in 2009 in the G-20 Meeting, Pittsburgh, USA, and in 2010 in COP 15 UNFCCC, Copenhagen, Denmark issued the national voluntary target to reduce greenhouse gas emission by year 2020 as much as 26% from business-as-usual by national domestic efforts. This emission reduction will further be improved as much as 41% from business-as-usual by international supports. The Government of Indonesia issued a national action plan to reduce greenhouse gases emission which is enforced by Presidential Regulation No. 61/2011. To achieve this target in energy sector,REFF-Burn (Reducing Emission from Fossil Fuel Burning) concept has been proposed by Sumiarso. Based on REFF-Burn Technology Portfolio, reducing emission from fossil-fuel burning is categorized in three different stages, which are pre-combustion, during combustion and post-combustion. In pre-combustion stage, utilization of clean energy is one of the wise choices. The perspective of the clean energy resources and utilization in Indonesia is discussed in this paper
Public Transportation Crisis in Bandar Lampung
Full text linkIncreasing the number of private vehicles are not comparable with the growth of public transport vehicles. Though the population of the city has increased rapidly, followed by increasing the amount of movement of people from one place to another. This growing movement should be facilitated by public transport so that traffic is not crowded by private vehicle. Because with more and more use of private vehicles will have an impact on the wasteful use of fuel for motor vehicles, traffic congestion led to wastage of time and cost, as well as environmental pollution. Therefore, the development of public transport in urban areas should be done as soon as possible to address the addition of the urban population, increasing the number of movements of people to move from one place to another, and the increase in the number of private vehicles
The Modified CW1 Algorithm For The Degree Restricted Minimum Spanning Tree Problem
Full text linkGiven edge weighted graph G (all weights are non-negative), The Degree Constrained Minimum Spanning Tree Problem is concerned with finding the minimum weight spanning tree T satisfying specified degree restrictions on the vertices. This problem arises naturally in communication networks where the degree of a vertex represents the number of line interfaces available at a terminal (center). The applications of the Degree Constrained Minimum Spanning Tree problems that may arise in real-life include: the design of telecommunication, transportation, and energy networks. It is also used as a subproblem in the design of networks for computer communication, transportation, sewage and plumbing. Since, apart from some trivial cases, the problem is computationally difficult (NP-complete), a number of heuristics have been proposed. In this paper we will discuss the modification of CW1 Algorithm that already proposed by Wamiliana and Caccetta (2003). The results on540 random table problems will be discussed
Damping Factor Of Precast Concrete With Wet Connection
Full text linkThis research aims at determining the behaviour of structural elements of precast reinforced concrete beams which are connected with wet and dry connections. Specimen used was 30 Mpa reinforced concrete beams with 6 pieces of 8 mm diameter main reinforcement which are placed on two rollers at the joint pedestal of each end and has a rectangular cross section of prismatic 10x18 cm2. Wet connection is a connection that uses a polymer concrete material of 40 MPa with a grafting method using prepacked method. The result of the research is expected to contribute to the development of precast concrete in building construction in Indonesia. In the elastic condition, the beam monolith has the largest natural frequency of the value, but a wet connection beam has a low natural frequency value. The difference of this natural frequency value is also equal to the condition of crack and ultimate
Infrastructure Health Monitoring System (SHM) Development, a Necessity for Maintenance and Investigation
Full text linkFailure of Kutai Bridge already gives Indonesia civil engineer a blow in face. The failure which bring cause human accident make a new challenge to Indonesia civil engineer not to wait till failure but to safe before the construction failure. By the development in sensor and monitoring technology the idea become more realistic. Structure Healthy Monitoring (SHM) become new idea to detect, to monitor and to find out the reliability of structure. The development and research in Indonesia for SHM till now are presented and compared to other country. SHM research is needed to predict behavior of bridge by using data from monitoring to gain healthy condition.
Message from the Chief Editor
Full text linkDevelopment (IJEST) on April 2013. In this issue of IJEST, we present to our readers selected articles related to Engineering, Science and Computer and Tehnology. Six papers are presented from Malaysia, Indonesia and India.The first article by Dr. Raihan Othman and Dr. Hens Saputra from International Islamic University Malaysia and Agency for the Assessment and Application of Technology, with the topic: Zinc-Air Battery – Powering Electric Vehicles to Smart Active Labels. The second article by Dr. Iing Lukman , Prof. Dr. M. N. Hassan, Prof.Dr. Noor Akma I and Prof. Dr. M. N. Sulaiman from Universitas Malahayati, Indonesia, World Health Organization Cambodia Chapter, Pnom Phen, Institute for Mathematical Reseach/ Department of MathematicsUniversiti Putra Malaysia, and Department of Computer ScienceFaculty of Computer Science and Information Technology Universiti Putra Malaysiawith the topic: Model Development of Children Under Mortality Rate With Group Method of Data Handling. The third article by Dr. Afzeri Tamsir, Dr. Rudi Irawan and Dr. Riza Muhida from Surya Institute, Jakarta with the topic: Rapid Prototyping and Evaluation for Green Manufacturing. The fourth article by Dr. A.Nagoorgani and Dr. P. Vijayalakshmi from P.G. & Research Department of Mathematics, Jamal Mohamed College Tiruchirappalli, India and Department of Mathematics, K.N.Govt. Arts College(Autonomous),Thanjavur, India with the topic: Fuzzy Graphs With Equal Fuzzy Domination and Independent Domination Numbers. The last article by Hery Riyanto from Universitas Bandar Lampung, Indonesia with the topic: Damping Factor of Precast Concrete with Wet Connection.With these selections I sincerely hope that everyone has something to gain from this issue and thank you to article contributors and reviewers for making this first issue possible. To all prospective author, we are welcome and please sent your article to the editors
Rapid Prototyping and Evaluation for Green Manufacturing
Full text linkWith global awareness of environmental risk and the pressing needs to improve efficiency, manufacturing systems are growing into new concept. Green manufacturing is reflected to employ various green strategies and technique to produce with eco-efficient. Green manufacturing aspects on the machine level were studied in various machining process. On this paper presentsthe green manufacturing review of Rapid Prototyping process. The objective is to evaluate the factors involved in green process of RP.Several comparative RP process respect to green manufacturing criteria are described.Rapid Prototyping process uses three dimensional CAD files to fabricate a physical model. Models are usually made from variety of material such as ABS, rubber and specific metals. Each material has the environment impact during the process and recycling.RP process are known as process not suitable for making direct product. However, lates technology makes it suitableto produce the parts with reasonable cost. For near the future, the utilization of this technology is becoming increasing and green manufacturing effect should be considered.Based on study conducted, several type of RP process is eco-efficient due to amount of waste material produced and environment impact during the process