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All Journal Inersia : Jurnal Teknik Sipil dan Arsitektur MEDIA KOMUNIKASI TEKNIK SIPIL Jurnal Teknik Sipil Jurnal Teknik Sipil Teras Jurnal Civil Engineering Dimension Civil Engineering Journal Dinamisia: Jurnal Pengabdian Kepada Masyarakat Astonjadro Journal of Engineering and Scientific Research (JESR) Journal of the Civil Engineering Forum Makara Journal of Technology Journal of Civil Engineering and Vocational Education Journal of Engineering and Technological Sciences
Ali Awaludin
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Aerospace Engineering Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Education Electrical & Electronics Engineering Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Social Sciences Transportation Other

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Journal : Civil Engineering Dimension

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The Axial Compression Capacity of Finger-Jointed Laminated Board Made from Rubber Wood Species Awaludin, Ali; Sulhan, Muhammad Afif; Effendi, Mahmud Kori; Hassan, Rohana
Civil Engineering Dimension Vol. 27 No. 2 (2025): SEPTEMBER 2025
Publisher : Institute of Research and Community Outreach - Petra Christian University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.9744/ced.27.2.113-122

Abstract

The utilisation of Rubberwood was an effort to provide an alternative to low-cost housing in Indonesia. This study investigated the use of Rubberwood Finger-Jointed Laminated Board (FJLB) under compression loading parallel to the grain. The investigation included laboratory experiments and numerical analysis. The experiments were conducted using two specimens of FJLB members, each with a length of 2000 mm and a cross-sectional dimension of 100 mm × 100 mm². Finite element analysis (FEA) was employed to predict the axial capacity, considering non-linearity, contact boundary conditions, and buckling analysis of the material. The study found an average axial capacity of 150.9 kN for the two specimens, which was 3.2% higher than the FEA and 5.4% higher compared to the Euler formula. Laboratory measurements revealed that initially, the stress distribution in the cross-section was uniform, then suddenly changed to a combination of tension and compression during the final loading stage.
Assessment and Strengthening of Bolted Connections in the Mandomai Bowstring Bridge Constructed with Ulin Wood Subchan, Shafira Khairunnisa; Awaludin, Ali; Akbar, Miqdad Khosyi; Tama, Radika Gandi; Setiawan, Angga Fajar; Yudhistira, Angga Trisna; Irawati, Inggar Septhia; Triwiyono, Andreas
Civil Engineering Dimension Vol. 28 No. 1 (2026): MARCH 2026
Publisher : Institute of Research and Community Outreach - Petra Christian University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.9744/ced.28.1.101-110

Abstract

This study assessed and proposed a retrofit strategy for bolted timber connections in the Mandomai pedestrian bridge, constructed from Ulin wood (Eusideroxylon zwageri). Numerical modeling, analytical evaluation using Eurocode 5 yield equations, and experimental validation were conducted. Axial forces from a global Midas Civil model under a 1.25 kN/m² live load showed three critical connections (S11, S13, S14) with demand-capacity ratios (DCR) exceeding 1.0. A retrofit using steel side plates and ASTM A325 bolts reduced DCRs to 0.79, 1.02, and 0.70, respectively. Experimental testing of limited full-scale double-shear wood-to-wood joints demonstrated an average ultimate capacity of 191 kN, which was 57.65% higher than the theoretical prediction, indicating the conservative nature of Eurocode 5 and the contribution of mechanisms such as the rope effect and frictional interlock. The results confirmed the retrofit’s effectiveness and highlighted the need to refine design provisions for dense tropical hardwoods.
Co-Authors Achmad Basuki Ahmad, Mohammad Ismail Ramadan Akbar, Miqdad Khosyi Aminullah, Akhmad Andreas Triwiyono Arfiati FArdhani, Arfiati Aritonang, Tobok S. M. Ay Lie Han Ayun, Zaimah Qurrata Bambang Suhendro Bambang Supriyadi Darmawan, M. Fauzi Endita Prima Ari Pratiwi* Fatchan Nurrochmad Ferry, Ferry Haroki, Yusuf Hassan, Rohana I Gusti Lanang Bagus Eratodi Iman Satyarno Irawati, Inggar Septhia Ismanti, Sito Mahmud Kori Effendi Making, Maria Yasinta Menge Md Nor, Noorsuhada Muhammad Akbar Neil Andika Ni Nyoman Nepi Marleni Niken Palaeowati Purnomo, Sidiq Saputra, Muhamad Dandy Harjunaseta Hadi Setiawan, Angga F. Setiawan, Angga Fajar Siswokarto, Suprapto Subchan, Shafira Khairunnisa Sulhan, Muhammad Afif Sumartono, Ignatius Harry Suprapto Siswosukarto Tama, Radika Gandi Tantisaputri, Intan Archita Tantri Nastiti Handayani TATI NURHAYATI Yudhi Arnandha Yudhistira, Angga Trisna