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All Journal Prosiding Semnastek Jurnal Teknik Sipil E-Dimas: Jurnal Pengabdian kepada Masyarakat BENTANG : Jurnal Teoritis dan Terapan Bidang Rekayasa Sipil Aksara: Jurnal Ilmu Pendidikan Nonformal Jurnal Pembelajaran Pemberdayaan Masyarakat (JP2M) Jurnal Abdimas Ilmiah Citra Bakti (JAICB) Community Empowerment Wood Research Journal : Journal of Indonesian Wood Research Society Journal of Innovation and Community Engagement Jurnal Pengabdian Multidisiplin Proceeding ISETH (International Summit on Science, Technology, and Humanity) Engagement: Jurnal Pengabdian Kepada Masyarakat Jurnal Teknik Sipil Sasambo: Jurnal Abdimas (Journal of Community Service)
Olga Catherina Pattipawaej
Universitas Kristen Maranatha
Religion Agriculture, Biological Sciences & Forestry Arts Humanities Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Education Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Mathematics Medicine & Pharmacology Physics Public Health Social Sciences Transportation Other

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Dynamic Elastic Moduli of Teak Wood (Tectona grandis): Case study of Existing Buildings in Yogyakarta Pranata, Yosafat Aji; Pattipawaej, Olga Catherina; Setiadi, Amos
Bentang : Jurnal Teoritis dan Terapan Bidang Rekayasa Sipil Vol 13 No 2 (2025): BENTANG Jurnal Teoritis dan Terapan Bidang Rekayasa Sipil (July 2025)
Publisher : Universitas Islam 45

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33558/bentang.v13i2.10858

Abstract

This study aims to conduct experimental testing to obtain empirical values of the dynamic elastic moduli (MoEd) of wood, and to study its correlation with the static elastic moduli (MoE). The research method used is a quantitative method to obtain the parameters of progagation time and velocity data, by using a non-destructive test method on the structural components of columns and beams in existing buildings. The scope of the study is the dynamic elastic moduli data obtained from the results of previous studies, namely non-destructive testing on two existing wooden house buildings located in Sleman Regency, Special Region of Yogyakarta Province, Indonesia. The wood used is Teak wood species (Tectona grandis). The results of the study indicate that the MoEd of Teak wood (Tectona grandis) is obtained at 32891.34 MPa and MoE is 20007.17 MPa, with a ratio of MoE/MoEd of 0.608. The results of the study indicate that the wood in existing buildings is included in the category of strength class 1 with a quality code of E20 referring to SNI 7973.
Pemanfaatan Turbin Kaplan dengan Variasi Debit Air Sungai Ciparay di Kampung Stamplat Girang Desa Indragiri Sihombing, Tri Octaviani; Pattipawaej, Olga Catherina
Jurnal Teknik Sipil Vol 20 No 2 (2024): Jurnal Teknik Sipil
Publisher : Universitas Kristen Maranatha

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.28932/jts.v20i2.7282

Abstract

Stamplat Girang Village has quite large potential for developing micro-hydro power plants using Kaplan turbines, considering the hilly topography and the presence of the Ciparay river. The Ciparay River has quite a large water flow throughout the year. The main objective of this research is the use of the Kaplan Turbine with variations in Ciparay river water discharge. Measurements of water flow velocity and cross-section of the Ciparay river were carried out directly in low rainfall conditions and in high rainfall conditions. The average water flow of the Ciparay river is lowest at low rainfall at 0.22 m3/s and highest at high rainfall at 1.46 m3/s. With an energy height of 2 m, the effective electrical power produced is 6,592 watts in low rainfall conditions and the highest produced is 18,098 watts in high rainfall conditions. The effective electrical power obtained can be directly beneficial to various aspects of the regional government's efforts to assist the development of Stamplat Girang Village in empowerment and environmental development as well as supporting the Indonesian government's efforts to encourage the development of micro hydro energy in achieving sustainable development goals.
Memodelkan Ketidakpastian dalam Pembebanan Gelombang pada Selimut Struktur Lepas Pantai Pattipawaej, Olga
Jurnal Teknik Sipil Vol 2 No 1 (2006): Jurnal Teknik Sipil
Publisher : Universitas Kristen Maranatha

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.28932/jts.v2i1.10360

Abstract

The objective of this study is to model uncertainties inherent in random wave excitation of steel jacket offshore structure. A probabilistic finite element method is used as the basis for addressing the uncertainties. To assess the performance of the method, comparison of the prediction model addressing various uncertainties in the problem will be made with deterministic predictions.
Two-Dimensional Rubble-Mound Breakwater Model Using Tetrapod at Armor Layer and Geotube at Core Layer Pattipawaej, Olga; Dani, Hanny; Samskerta, I. Putu
Proceeding ISETH (International Summit on Science, Technology, and Humanity) 2015: Proceeding ISETH (International Conference on Science, Technology, and Humanity)
Publisher : Universitas Muhammadiyah Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23917/iseth.2344

Abstract

Waves and currents can remove sand from the coastal areas that caused beach erosion. Beach erosion needs to be handled by building breakwater. Rubble mound breakwater is chosen to dissipate the wave energy. Rubble mound structures are widely used throughout the world; so naturally, stability tests of rubble mound structures are the most frequently conducted coastal structure model. Two-dimensional rubble mound structure physical model is carried out in a flume. The armor layer facing the seaward uses tetrapods that are placed randomly and the core layer is set to be stable by using geotube. Three different slopes of rubble mound model facing the seaward is applied, i.e., 1:1.5, 1:2, and 1:2.5, respectively. There are also four different water levels used, i.e., 38 cm, 54 cm, 63 cm, and 70 cm. The measured parameters of this study are the wave height and wave period in front of and behind the breakwater structure. The analysis that can be done is the wave absorber and transmission waves. The stability of the structure can be observed in the form of displacement armor testing on the breakwater and at toe for a wide variety of slope and water level variations.
Co-Authors AAN DARMAWAN Amos Setiadi, Amos Anang Kristianto Angga Rijalu Pratama Ariesa Pandanwangi Asriwiyanti Desiani Budiarto Budiarto Dani, Hanny Daud Rahmat Wiyono Deni Setiawan DENI SETIAWAN Dewi Isma Aryani Djakaria, Elliati Doro Edi Erwani Merry Sartika Grecia Alfa Hanny J Dani Ida Ida Ida IDA IDA Ida Ida, Ida Iman Budiman Ismet Zainal Effendi Izmet Zainal Effendi Jimmy Agustian Loekito Kanjalia Tjandrapuspa Tanamal Lois Denissa Maria Christine Sutandi Maya Malinda Monica Rina Tutkey Muhammad Ali Rahim Novi Soesilo Putra W Remantan Ratnadewi . Ria Wardani Robby Yussac Tallar Ronald Simatupang Ronald Simatupang Rosida Tiurma Manurung Samskerta, I. Putu Tan Lie Ing Tan Lie Ing Wawan Suryana Yosafat Aji Pranata Yosafat Aji Pranata Yosafat Aji Pranata Yosafat Aji Pranata Yudita Royandi, Yudita Yuma Chandrahera