IPTEK Journal of Proceedings Series
Not a member yet
757 research outputs found
Sort by
Analysis of Retrofit Building Behavior with Base Isolation System Using Nonlinear Time History Analysis
Get PDF Now, procedures of design for the earthquake resistance of buildings and non-building structures SNI 1726: 2012 has been approved the procedures for seismic design for buildings SNI 1726-2002. SNI 1726: 2012 refers to the development of modern seismic regulations are due to changes in tectonic plates located on the active track on the path of circum-Pacific and the Indian track - the Himalayas. With the enactment of the new SNI earthquake, namely SNI 1726: 2012, then all existing buildings and designed with old SNI earthquake, that is SNI - 1726-2002 should be evaluated against for the new regulations. Handling scheme for existing buildings should be made to determine and improve safety. Analysis and solutions are required to improve the safety of buildings. Retrofitting Seismic Isolation is one of the effective and practical methode to increase safety of buildings against earthquakes, because this methode can reduce the earthquake acceleration response. Retrofitting seismic isolation can not only improve the safety and functionality seismic, but also to maintain the original design. Without the need to demolish and rebuild the building, the building will remain intact. So that historic buildings and cultural heritage can still be preserved. The concept of base isolation is to decouple the upper structure from its foundation and inserting isolator which has a small horizontal stiffness. This techniques can reducing the seismic impact from the soil vibration which could be from seismic motion. This study will compare the ratio building safety for old structural design that uses SNI-1726-2002 (old) vs SNI 1726: 2012 (new). The results shows that retrofitting seismic isolation building have better performance in terms of ductility demand, natural period, and lower internal forces due to earthquake
Analysis Strategy of Building Utilization Optimizing in Public Works Training Center Region IV Surabaya
Get PDFPublic Works Education and Training Center in Region IV of Surabaya is one of work units from education and training center, ministry of public work. It has a role as the organizer of any educational and training as the administrator of non-taxable revenue. Public Works Education and Training Center in Region IV of Surabaya has building which can be used by the internal institute or by the public through the non-taxable revenue fee. However, the property itself is not sufficient compare to the activities held. It caused the utilization of the building is not optimal. The aim of this research is to analyze the strategy of improving the utilization of public work education and training center building area IV Surabaya. The method used in deciding the strategy was by analyzing the internal and external factors through SWOT method. The analysis process of the internal and external factors was done by using the Focus Group Discussion (FGD) method; they were determining the internal and external factors, evaluating them, and developing strategy. The FGD was attended by the internal authorities. By using the Grand Strategy Matrix would be gained the grand strategy of improving the utilization of the building, which then the derivative strategy was analyzed based on the highest score in EFI and EFE matrix. The result is the organization position in the big strategy matrix was in the first quadrant which encourages the aggressive growth. The grand strategies which believed suitable to the organization condition were the market development, market penetration, and product improvement
Evaluasi Timbulan Genangan di Catchment Area Sistem Pematusan Rumah Pompa Greges Rayon Genteng Surabaya
Get PDFSistem pematusan dengan luas total 1520 ha yang dilayani oleh Rumah Pompa Greges mempunyai 1 saluran primer yaitu saluran primer Kali Greges. Kali Greges dengan panjang 4-5 km dan lebar 12-22 meter merupakan muara dari 17 saluran sekunder. Selain rumah pompa Greges yang melayani Kali Greges, terdapat 3 rumah pompa lainnya yaitu rumah pompa Dupak Bandarejo melayani saluran sekunder Kali Dupak, rumah pompa Asem Jaya melayani saluran tersier Kali Asem Jaya, serta rumah pompa Tidar di saluran tersier Petemon Kali yang tidak dioperasikan lagi. Variabel studi yang digunakan yaitu kapasitas pompa, debit aliran ke saluran primer, dan debit aliran ke saluran sekunder. Metode yang digunakan yaitu melakukan perhitungan hidrolika untuk mengetahui debit saluran rencana dan debit eksisting. Dilakukan juga perbandingan kapasitas pompa saat ini dan kapasitas awal serta dilakukan analisis terhadap Standard Operating Procedure (SOP) pengoperasian pompa. Hasil evaluasi ini menunjukkan kondisi eksisting 5 segmen saluran sekunder yaitu Kali Tembok Gede, Kali Semarang, Kali Margo Rukun, Kali Demak Timur, dan Kali Dupak tidak mampu melayani debit limpasan air hujan yang disebabkan karena adanya sedimen. Selain itu, juga tidak adanya SOP pengoperasian pompa secara tertulis, yang menyebabkan terjadinya genangan dengan luas total genangan 5,71 ha dengan lama waktu genangan maksimum 240 menit dan tinggi genangan maksimum 40 centimeter pada tanggal 16 April 2016 yang merupakan salah satu genangan terbesar di catchment area sistem pematusan Greges.
Strength Durability-Based Design Mix of Self-Compacting Concrete with Cementitious Blend using Hybrid Neural Network-Genetic Algorithm
Get PDFSustainable development in self-compacting concrete (SCC) has been studied extensively for the recent years for the purpose to address its growing demand in construction projects. Sustainable SCC can be defined as concrete mix with partially replaced cement content that varies from low to high level using different mineral admixtures. Silica fume and fly ash which is considered as the most common sustainable mineral admixtures for binary and ternary cementitious blends show good effect to the compressive strength and chloride penetration resistivity of hardened SCC. In this paper, this effect was further investigated by using two widely used biological inspired computing models namely the artificial neural network (ANN) and genetic algorithm (GA). The test results of compressive strength and chloride ion penetration resistance from thirty-six concrete samples with varying replacement level of binary and ternary cementitious blends were utilized as inputs for model development. ANN was used to obtain models that describe analytically the relationship of material components to the compressive strength and chloride penetration resistivity. The derived models were further explored through optimization using GA. Results shows that ANN was able to establish the relationship of strength-durability parameters to the material components while GA is able to derived optimal mix proportion for best strength-durability performance. The present study also validates the sensitivity of the replacement level of silica fume and fly ash as a ternary cementitious blend to the strength-durability performance of SCC. This indicates that high volume content of ternary blended cement can improve chloride penetration resistivity and exhibited high compressive strength
3D Resistivity Data Modelling to Identify Aquifer Geometry by Qualitative Analysis (Field Study: PDAM Surabaya Groundwater Conservation Area, Pasuruan)
Get PDFThe resistivity method is one of the geophysical methods used to identify the aquifer layer by utilizing the rock response to the flow of electric current. This method considered more effective and can give a good subsurface cross-section, especially the fluid response. In this research, 3D modelling for identify geometry of subsurface geological structures of this study focus in three area (Plintahan, Duren Sewu, and Karangjati) using 2D resistivity data. Data Measurement of 2D resistivity using Wenner-Schlumberger configuration with length of each line is 155 meters and the target depth is 30 meters. The purpose of this configuration is to get an inverse with a resolution that is good to the lateral and vertical. The results show that the types of rocks in the research area was clay, sand and sandy shale with resistivity value 50-150 ohm-meter where sand rocks interpreted as aquifer rocks at depths of 2-7 meters and a thickness of 2-5 meters. The result of the resulting 3D modelling showed that the aquifer layer in Plintahan area showed the geological continuity with anticline geometry, in another area the aquifer layer in Durensewu - Karang Jati area showed the aquifer geometry prediction but there is no continuity of the structure of each other
Comparison Study of Various Type Artificial Reef Performance in Reducing Wave Height
Get PDFMost fishermen used inappropriate methods to sustain their livelihoods, severely destroying fishery resources. Furthermore, a lack of environmental protection and pollution prevention lead the best coastal and estuarial nurseries to become unhabitable. Several studies have pointed out that fish stocks in coastal waters could be no longer sufficient for the increasing fishing activity and consumption requests. Based on the 1950–2006 global statistics conducted by Food and Agriculture Organization of the United Nations (FAO) (2012).Artificial reefs are most often constructed to increase the efficiency of fishery resource harvest (Seaman and Sprague, 1991). In engineering practice, the stability of artificial reefs is an important issue in preventing the failure of reef units due to wave and current actions. Some of the artificial reefs have also been designed to serve as low-crested coastal protection structures (e.g. Dalrymple et al., 1991a; Ranasinghe et al., 2006). One particular advantage of these artificial reefs over the conventional submerged breakwaters is the fact that they are multi-purpose units and can be achieved with more cost-effective materials and environmentally friendly construction processes (Harris, 1995; Buccino et al., 2013). Artificial reef model keep looking for modification to get compatibility and efiiciency as submerged breakwater because the feasibility of artificial reefs for coastal protection is typically evaluated based on the percentage of surface wave height reductionWave transformation analysis in artificial reef do with consideration from some non dimensional variables. Wave transmission process defined with ratio betwwen transmission wave height and incoming wave heightThis research compares 5 types of Artificial reef in numeric model. There are hexareef, bottle reef, star reef, seadome and cube reef. They are tested with Indonesian wave steepness which has value between 0,0013 and 0,012
A Japan compact bus terminal; Review on Hakata bus terminal, Fukuoka
Get PDFA mass transportation system has a main role in every development process of countries in the modern world. In Japan, transportation infrastructure such as train stations or bus terminals plays as an important node that determines the development of functions and other community activities in the surrounding area. Based on the compact city development concept, various types of transport infrastructure were constructed in the integrated area of city nodes and mixed with a various public and commercial functions and supported with a well-structured management of transportation systems. With the condition of limited land in the city nodes, transport infrastructure has to be built as a compact building. This paper reviews design and system of Bus Terminal in Japan from the architectural perspective with the issue of a compact building. As a study case, Hakata Bus terminal is one of Japanese bus terminal built with a slim building and vertically extended level without bus parking area. The platform was divided into three different floor levels with total ten building stories filled by various public and commercial functions. Time schedule, information system, people and vehicle circulation, and the other aspect become the main support to create a compact bus terminal. However, the commercial function is more prominent than the overall function of the building, thus making Hakata bus terminal does not show the typology terminal design in general. Overall, the terminal provides community services without ignoring the main function as a mass transportation system in a compact bus terminal
Computer-Based Applications for Quality Management Process in Shipbuilding
Get PDFAbstract¾ In a Shipyard, Quality Management has not been executed systematicaly. Management of inspections are not supported by system which can help Shipyard, Owner Surveyor, Class and State Regulator to control, to search, to review, to evaluate and to do the inspections. This research has a main goal to design a Computer-based Application that makes Quality Management process in Shipbuilding better. Firstly, the Existing Quality management in shipyard was observed which is taken as the sample is PT. PAL Indonesia Shipyard. Secondly, Determining parameters are required in Quality Management Application. Thirdly, Designing Computer-based Applications based on application parameters. Application parameters are identified during shipbuilding stages, processes, outfittings and ship documents, as well as standards and check lists. Software used to design the application is combination of PHP as programming language, Sublime Text 2 as text editor and MySQL as database. This computer-based applications can help quality management implementation in controlling, searching, reviewing, evaluating, and doing the inspection. Once the application has been designed, it was tested by verification and comparison systems. It is concluded that the application system is better than the existing system which is personally conducted in the Shipyard
Numerical Study on the Effect of Structural Parameters on the Behavior of BRBF-E
Get PDFDuctile braced frames are often used to resist lateral earthquake loads in steel buildings. However, the presence of the brace element can interfere with architectural features. Buckling-restrained braced frame in eccentric configuration (BRBF-E) is believed to have combined good performance in resisting earthquake loads and great flexibility for architectural design. Eccentrically braced frames can accommodate architectural openings for doors, windows and hallways. However, every configuration of buckling-restrained braced frame in eccentric configuration has a different seismic response in earthquake loadings. The effect of different parameters to the structural response of BRBF-E was studied such as eccentricity-to-length of bay ratio, cross sectional area of BRB, length of the bay, and location of the braces. Design parameters were investigated to determine its effects to the structural response of different eccentric configurations of BRBF-E with building height of 3, 6 and 9 stories. These parameters of BRBF-Es under seismic loading were analyzed using pushover analysis. The analysis of data was composed of comparison of inter-story drift and percentage failure of members. Comparing the different BRBF-E configurations, the single[1] brace configuration provides the most reduction in inter-story drift and percentage of failure of members. From the numerical experiment results, a design guide for BRBF-E was proposed
Sustainable design of past-rural architecture in the present urban-tropical environment
Get PDFWith large open space, traditional houses as representative of rural architecture, have been designed in the past in sufficient air flow. However, nowadays, they fight to accommodate unsupportive environment; high density neighborhoods and global warming effect. This research studies adaptation method and concept of sustainable design of the rural architecture in urban environment of tropical climate. Simultaneous direct measurement and occupant interview were conducted on 19 buildings and 71 respondents. Ecotect Analysis and CFD Fluent program were also used to obtain the proposed model. The results highlighted that by active and passive ventilation method, the occupants respond their urban environment. Moreover, the sustainable design can be reached by raising the floor and roof in order to give higher potency of cooler sufficient air movement through openings and shading. Providing solar chimney as vertical ventilation with sufficient ceiling fan works is also proposed