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All Journal JPTK: Jurnal Pendidikan Teknologi dan Kejuruan Journal of Engineering and Applied Technology
Ahmed Wasiu Akande
African Regional Centre for Space Science and Technology Education
Automotive Engineering Civil Engineering, Building, Construction & Architecture Electrical & Electronics Engineering Engineering Mechanical Engineering Other

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Comparative study of sinus earthquake forces and ground motion on structure behavioral response using linear time history analysis method Suryatama Ageng Pamuji; Slamet Widodo; Maris Setyo Nugroho; Faqih Ma`arif; Ahmed Wasiu Akande
Journal of Engineering and Applied Technology Vol 4, No 1 (2023): (March)
Publisher : Faculty of Engineering, Universitas Negeri Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21831/jeatech.v4i1.58666

Abstract

This study aimed to calculate the design earthquake with a harmonic sine wave approach at a frequency of 1.5 Hz; 2.5 Hz; 3.5 Hz; 4;5 Hz, as well as Loma Prieta, Northridge, and Kobe ground motion. In addition, a structural response review was also carried out based on a comparison of the effects of the ground motion and sine wave earthquake forces. This study used an experimental method of modelling an apartment building with a scale of 1: 50. The case study was located in Mantrijeron, Yogyakarta, which has a seismic category in the medium-size class. The analysis phase began with material definition, element dimension estimation, modelling by analysis software, loading estimation, structural analysis, and comparison of structural responses based on the deviation. The results indicate that the building model could withstand dynamic loads from harmonic waves up to a frequency of 5.5 Hz for one minute of vibration. The most significant deviation is shown at a frequency of 4.5 Hz with an x-axis direction of 0.110 and a y-direction of 0.160. The structural response resulting from ground motion loading shows that the highest deviation occurred due to the influence of the Kobe earthquake, with a deviation of 0.063 in the x-axis direction and 0.054 in the y-axis direction. Based on these results, the effect of harmonic sine waves is greater than the ground motion loading on the response of the building structure, so it is used as an experimental loading through a vibrating table with the actual residual deviation results showing a value of 0.9 mm in the y-axis direction. The difference in structural response results could be caused by the supports and connections modelling in planning through analysis software which could not precisely represent the actual implementation of the building model.
Analysis and diagnosis for 12 job level of training junior civil engineers in operations and structural engineer tasks Faqih Ma'arif; Ahmed Wasiu Akande
Jurnal Pendidikan Teknologi dan Kejuruan Vol 29, No 1 (2023): (May)
Publisher : Faculty of Engineering, Universitas Negeri Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21831/jptk.v29i1.60668

Abstract

This study aims to determine the competencies of twelve job levels in housing construction work, as well as effective strategies to improve employee skills in each field. The method used is qualitative by conducting interviews in each competency field (infrastructure, structure, landscape, mechanical, and electrical). Closed questionnaires were carried out specifically for structural engineering work, which has a greater percentage of work than other fields. Education and training, as well as demonstrations through various learning media (modules, virtual reality, and tutorials), are carried out in parallel classes through an integrated schedule that the company has prepared. The results showed that in order to obtain a minimum standard of competence in all fields, 448 study hours were required with the details of the general manager, project manager, assistant manager, and supervisor, respectively, 38 JP, 120 JP, 160 JP, and 130 JP, which were divided into 45 subject areas. Analysis of the level of knowledge and skills reports that junior structure engineers need construction work assistance and standard knowledge about building construction compared to senior engineers who have exceeded the minimum passing criteria with an average achievement of 4.23 (84%) of the total material studied
Co-Authors Faqih Ma`arif Faqih Ma’arif Maris Setyo Nugroho Slamet Widodo Suryatama Ageng Pamuji