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All Journal Jurnal Teknik ITS IPTEK Journal of Proceedings Series JURNAL SOSIAL HUMANIORA (JSH) Syntax Literate: Jurnal Ilmiah Indonesia Jurnal Manajemen Aset Infrastruktur dan Fasilitas Journal of Infrastructure and Facility Asset Management Indonesian Journal of Multidisciplinary Science International Journal on Livable Space Sewagati

Adi, Trijoko Wahyu

Civil Engineering Department, Institut Teknologi Sepuluh Nopember (ITS), Surabaya

Author-ID : 3421249

Arts Humanities Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Energy Engineering Environmental Science Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Library & Information Science Mathematics Public Health Social Sciences Transportation Other

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The Cultural Differences influences on Knowledge Sharing Activities in Construction Project Collaboration Tri Joko Wahyu Adi; Atif Musbah
IPTEK Journal of Proceedings Series No 1 (2017): The 2nd International Conference on Civil Engineering Research (ICCER) 2016
Publisher : Institut Teknologi Sepuluh Nopember

In the last decades construction activity has been heavily criticized for its productivity and performance in relation to cultural differences. There have been several studies indicated that the cultural diversity influence the knowledge of the organization, and that result in barriers in knowledge sharing in the multicultural organization. The knowledge spreading manners affected by the cultural in organization due to ethnic, cities, sexual category, local culture, which that might lower level of the knowledge spreading in organization . Therefore, a research study is developed in order to assess the influences of cultural differences on the activity of knowledge distribution in organization project and to determine of extend of the cultural differences to obstacle the individual to share their knowledge within the organization or with other members of the organization and how is that leads to decrease the project’s performance. For seeking to achieve the aims of the study a survey questionnaire was used to gather data. System dynamic simulation is utilized to interpret the collected data in order to achieve meaningful information. The results proven that cultural difference is one of the major problems that impact the project performance negatively in the construction industry since it is verified that the cultural difference impacts the knowledge flow among the employees in the construction project which that strongly affects the outcome of the projects and that also leads to decrease the productivity of the project. In addition, the respondents also agree that cultural differences cause unsuccessful safety system in the construction projects. Therefore, the cultural differences should be given careful attention to ensure better project performance.

Analysis The Effect of Total Quality Management, Technology, and Knowledge Management on Product Quality in Indonesia Construction Industry Mohammad Yogie Latansa; Tri Joko Wahyu Adi; Mohammad Arif Rohman
IPTEK Journal of Proceedings Series No 5 (2019): The 1st International Conference on Business and Management of Technology (IConBMT)
Publisher : Institut Teknologi Sepuluh Nopember

The construction industry is being faced with rapid development with a high level of competition. In the current global competition, construction companies must be able to compete in order to meet customer demand and satisfaction. In response to the competition, construction companies must efforts to develop products and services. In the development process knowledge management has a role in improving quality. In addition, the use of technology and the implementation of total quality management through knowledge management can improve quality. Quality is the main factor in order to develop products and services to encourage sustainable achievement. This research aims to analyze the factors that influence technology, implementation of total quality management, and knowledge management on the product construction quality in Indonesia. The data used in this research are primary data. The factor identification process is carried out by distributing questionnaires to contractors which involved in the construction industry in Indonesia as respondents. Furthermore, the data obtained were analyzed using the relative importance index ( RII) to obtain a sequence of factors that influence. Then the influencing factors analyzed using structural equation modelling (SEM) with SPSS statistical software. This research expected to resulting models of factors that influence technology, implementation of total quality management, and knowledge management on product construction quality in Indonesia

Assessment Model of Contractor Quality Management Maturity Franciska Lisa Permatasari; Tri Joko Wahyu Adi; I Putu Artama Wiguna
IPTEK Journal of Proceedings Series No 6 (2017): The 3rd International Conference on Civil Engineering Research (ICCER) 2017
Publisher : Institut Teknologi Sepuluh Nopember

One of the most important parts of a project management is the quality management. While it is absolutely necessary to conduct a thorough research on the maturity of quality management in construction companies, especially contractors so that construction companies know at what level of their company quality, this has an effect on building customer perceptions of their companies and the business of the company itself to continue to grow to be able to reach the highest maturity level. This paper aims to propose an assessment model of contractor quality management maturity (QMM) that covers both the corporate and project levels of a construction project. Determination of research variables was conducted with the study of literature in depth and validated by experts. Weighting variables by pairwise comparison method were based on interviews with experts and was represented in the form of a spider web. For model validation, case studies of large state-owned contractors and a medium-sized private contractor in Surabaya were used. The weighting for QMM assessment on contractors is 43% on corporate level and 57% on project level. In corporate level there are 10 variables with each weighting: People and Customer Management (2.9%), Supplier Partnership (1.6%), Communication of Improvement Information (2.4%), Customer Satisfaction Orientation (5.3%), External Interface Management (1.4%), Strategic Quality Management (6.2%), Team Work Structures for Improvement (4.3%), Operational Quality Planning (4.4%), Quality Improvement Measurement System (8.2%), and Corporate Quality Culture (6.3%). Project level quality consists of 39% for product quality and 18% for service quality. In the project level there are 8 variables for product quality: Performance (9.0%), Features (4.1%), Reliability (8.0%), Conformance (5.6%), Durability (4.5%), Serviceability (3.0%), Aesthetics (1.7%), Perceived Quality (3.1%). While the service quality consists of 5 variables: Service Reliability (4.9%), Responsiveness (2.7%), Assurance (5.7%), Emphaty (1.8%), and Tangibles (2.8%).

Factors Affecting the Decision to Use Just-In-Time Method for Precast Components in Surabaya Construction Industry Vinza Firqinia Fristia; Trijoko Wahyu Adi
IPTEK Journal of Proceedings Series No 2 (2017): The 2nd Internasional Seminar on Science and Technology (ISST) 2016
Publisher : Institut Teknologi Sepuluh Nopember

Lack of management of precast components lead to decreased productivity of work. The use of Just-In-Time (JIT) method in construction projects aimed to reduce production costs, improved quality, and increased productivity. However, not all construction companies implement JIT on the Surabaya construction project. This study aimed to identify factors that influence to use JIT method decisions for precast components in Surabaya construction company. Data from questionnaires were collected and analysed using Relative-Importance-Index analysis and Confidence-Interval. The results of research that Surabaya construction company have knew and understood but still not implemented. Factors that influence at construction project were planning and efficient communication between all stakeholders.Kurangnya pengelolaan komponen pracetak mengakibatkan produktivitas kerja menurun. Penggunaan metode Just-In-Time (JIT) dalam proyek-proyek konstruksi bertujuan mengurangi biaya produksi, meningkatkan kualitas dan produktivitas. Namun, tidak semua perusahaan konstruksi menerapkan pada proyek konstruksi kota Surabaya. Penelitian ini bertujuan mengidentifikasi faktor-faktor yang mempengaruhi keputusan menggunakan metode JIT untuk komponen pracetak dalam perusahaan konstruksi kota Surabaya. Data dari kuesioner dikumpulkan dan dianalisis menggunakan analisis Relative-Importance-Index dan confidence-interval. Hasil penelitian bahwa perusahaan konstruksi Kota Surabaya telah mengetahui dan memahami namun masih belum menerapkan. Faktor yang mempengaruhi dalam proyek konstruksi ialah perencanaan dan komunikasi secara efisien antara semua pemangku kepentingan.

The SFA-LSSVM as a Decision Support System for Mitigating Liquefaction Disasters Julian Pratama Putra Thedja; Jui-Sheng Chou; Tri Joko Wahyu Adi
IPTEK Journal of Proceedings Series No 1 (2015): 1st International Seminar on Science and Technology (ISST) 2015
Publisher : Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j23546026.y2015i1.1127

Advanced data mining techniques are potential tools for solving civil engineering problems. This study proposes a novel classification system that integrates smart firefly algorithm (SFA) with least squares support vector machine (LSSVM). SFA is an optimization algorithm which combines firefly algorithm (FA) with smart components, namely chaotic logistic map, chaotic gauss/mouse map, adaptive inertia weight and Lévy flight to enhance optimization solutions. The least squares support vector machine (LSSVM) was adopted in this study for its superior performance of solving real-world problems. Based on the provided engineering data, the analytical results confirm that the SFA-LSSVM has 95.18% prediction accuracy

Energy Efficiency of Cooling Load through The Glass Facade of Office Buildings in Surabaya Ulil Albab; Tri Joko Wahyu Adi
IPTEK Journal of Proceedings Series No 5 (2019): The 1st International Conference on Business and Management of Technology (IConBMT)
Publisher : Institut Teknologi Sepuluh Nopember

The aims of this article is to obtain an alternative type of glass on the envelope buildings of full glass on all surface envelope, cost of glazed facades and to obtain energy efficiency of cooling load through the glass facade of office buildings in Surabaya. The shape of the building in this article uses a simulation of regular form (squares) and differences in building orientation. The calculation method is uses the OTTV method (Overall Thermal Transfer Value) for the value of heat gain through the building envelope and the CLTD method (Cooling Load Temperature Difference) to calculate the cooling load affected by the glass facade. The results obtained in this article simulation show that the most efficient value is double glazing with using SC ≤ 1.9 and U value glass ≤ 2.6 W / m2K, so that the energy efficiency of the cooling load obtained can decrease until 6%. The savings were obtained at the value of OTTV is 25.60 W/m2 with the price of glass facade in the amount of Rp. 4,005,333/m2

Partnership Scheme Alternatives for Low-Cost Rental Public Apartment in Indonesia Ria Asih Aryani Soemitro; Farida Rachmawati; Tri Joko Wahyu Adi; Connie Susilawati
Jurnal Manajemen Aset Infrastruktur & Fasilitas Vol 4, No 4 (2020): Jurnal Manajemen Aset Infrastruktur & Fasilitas
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j26151847.v4i4.7910

The low-cost apartment development program is one of the reliable solutions to reduce housing backlog in Indonesia, especially in some major cities, due to land scarcity and high price of land. In order to accelarate the low-cost apartment, either ownership or rental apartment, it needs the private sector’s involvement. However, it requires suitable partnership scheme to attract the private sector and to deal with the land provision problem. The objective of this study is to propose partnership scheme alternative for low-cost apartment. Interview to nine government officers (ministry and local) and three person from private sector companies have been conducted to explore the possibilities of the proposed scheme. The result shows that there two major groups of scheme alternatives, which are classified based on the land owner. The first group is the scheme, which government owns the land, while the second group is the scheme, which the land is owned by the private sector. The first group has three alternative schemes, while the second one has two alternative schemes.

Evaluasi Kinerja Aset Tempat Pengolahan Sampah Terpadu (TPST) di Kabupaten Sidoarjo Marlena Marlena; Tri Joko Wahyu Adi; I.D.A.A. Warmadewanthi
Jurnal Manajemen Aset Infrastruktur & Fasilitas Vol 4, No 3 (2020): Jurnal Manajemen Aset Infrastruktur & Fasilitas
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat

Perkembangan Kabupaten Sidoarjo sebagai pusat pertumbuhan membawa dampak terhadap peningkatan jumlah penduduk sehingga berpengaruh terhadap jumlah timbulan sampah yang dihasilkan. Salah satu upaya yang dilakukan pemerintah Kabupaten Sidoarjo untuk mengurangi jumlah timbulan sampah yang masuk ke TPA adalah dengan membangun infrastruktur pengelolaan sampah berupa Tempat Pengolahan Sampah Terpadu (TPST). TPST yang telah dibangun ini perlu menerapkan manajemen aset yang tepat sehingga dapat berjalan secara efektif dan berkelanjutan. Saat ini, masih terdapat TPST yang belum berfungsi optimal salah satunya dikarenakan belum terpenuhi sarana dan prasarana. Tujuan dalam penelitian ini adalah untuk melakukan evaluasi terhadap kinerja aset TPST di Kabupaten Sidoarjo. Metode penelitian yang digunakan adalah analisa deskriptif yaitu menggambarkan suatu data yang terkait pengelolaan aset TPST di Kabupaten Sidoarjo. Pengumpulan data berupa data primer dan data sekunder. Data primer diperoleh melalui observasi lapangan secara langsung dan hasil wawancara, sedangkan data sekunder diperoleh dari hasil studi literatur dan data – data dari instansi terkait. Hasil analisa tersebut memberikan gambaran bahwa kondisi TPST di Kabupaten Sidoarjo masih perlu peningkatan kinerja aset dan pengadaan aset baru. Selain itu juga, perlunya peningkatan kegiatan operasional dan pemeliharaan pengelolaan persampahan agar program TPST berjalan dengan optimal dan dalam rangka berkelanjutan TPST kedepan.

Influence Factors for Community-Based Road Quality in Slum Settlement Areas Mochammad Reyhan Firlandy; Hitapriya Suprayitno; Eko Budi Santoso; Tri Joko Wahyu Adi
Journal of Infrastructure & Facility Asset Management Vol 2, No 2 (2020): Journal of Infrastructure & Facility Asset Management
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/jifam.v2i2.6666

National Long-Term Development Plan (RPJPN) mandated to alleviate slum settlement areas until 0 hectares. One of the indicators to be assessed on slum settlement handling is by road settlement access. The quality of the road was affected by the physical condition and the operation, management factors either. This research aim is to identify factors that affected community-based settlement road management in slum settlement areas, through Kota Tanpa Kumuh (KOTAKU) Program or City Without Slum. The analysis used in this research is descriptive analysis, in which the researcher gathers factors related to community-based road management from literature study, also previous study and research. Then 7 experts that have expertise in slum alleviation subjects were chosen, to validate and filter the factors that have been gathered. The results indicate that there are 25 approved factors by all experts and considered as high influence factors, 13 factors approved by 4 - 6experts considered as moderate influence factors, and 3 factors approved by less than 4 experts considered as low influence factors. This research contributes to Infrastructure Asset Management knowledge, specificallyin community-based infrastructure management.

Life Cycle Cost Structure of a Government Office Green Building – Case of the Ministry of Public Works and Housing Main Building Domenico Adi Nugroho; Hitapriya Suprayitno; Tri Joko Wahyu Adi
Journal of Infrastructure & Facility Asset Management Vol 2 (2020): Supplement 1 : Journal of Infrastructure & Facility Asset Management
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/jifam.v2i0.8407

One of the efforts to reduce the large impact of building sectors on the environment is the concept of environmentally friendly building known as green buildings. With the increasing global interest in this concept, green building development in Indonesia was also expected to increase. Cost is one of the most important focus for promoting green buildings, so it is necessary to conduct a cost analysis of a green building to provide a clearer understanding of the life cycle cost structure of a green building in its life cycle as a study to develop the knowledge of Infrastructure Asset Management. In this study data related to the cost component of the government office green building was identified to determine the overall cost of the building from the beginning of its construction until recent year, which can be described as: Initial Cost, Operation and Maintenance Cost, and Energy Cost. The result of this study finds out that during 8 year period of its lifetime the total building expenditure is Rp 483.649.711.849,00 and the life cycle cost structure percentage are: initial cost 43,94%, operation and maintenance cost 39,48%, and energy cost 16,57%. The total energy cost saving is Rp 28.072.536.738,00.

Co-Authors Abdul Kholiq Arif Abadil Ghullam Aris Aminulwahyu Atif Musbah Christiono Utomo Connie Susilawati Diah Sarasanty Domenico Adi Nugroho Dwiky Pranarka Eko Santoso Erma Suryani Farida Rachmawati Farida Rachmawati Felix Andrian Prihatono Franciska Lisa Permatasari Gabriel Henry Gabriel Henry Hitapriya Suprayitno, Hitapriya I Putu Artama Wiguna I.D.A.A Warmadewanthi Jojok Widodo Soetjipto Jui-Sheng Chou Julian Pratama Putra Thedja Kharista Hadya Nata Putra M. Arif Rohman Maisyah, Siti Marlena Marlena Mochammad Reyhan Firlandy Mohammad Khabibulloh Mohammad Yogie Latansa Novi Sudiansyah Novilia Hardiani Nurcahyo, Cahyono Bintang Retno Indryani Ria Asih Aryani Soemitro Rohman, Mohammad Arif Septian Rizki Pramono Supani Supani Ulil Albab Vinza Firqinia Fristia Wahyu, Febtian Yusvika Wisnu Broto, Y. Suponco Yusronia Eka Putri

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