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Dr. Ratih Damayanti
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Research Center for Biomaterials,Indonesian Institute of Sciences Jl. Raya Bogor Km 46, Cibinong, Bogor 16911, Indonesia
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INDONESIA
Wood Research Journal : Journal of Indonesian Wood Research Society
Published by Masyarakat Peneliti Kayu Indonesia
ISSN : 20873840     EISSN : 27749320     DOI : 10.51850/wrj
Core Subject : Agriculture,
Agriculture, Biological Sciences & Forestry
Wood Research Journal is the official journal of the Indonesian Wood Research Society. This journal is an international medium in exchanging, sharing and discussing the science and technology of wood. The journal publishes original manuscripts of basic and applied research of wood science and technology related to Anatomy, Properties, Quality Enhancement, Machining, Engineering and Constructions, Panel and Composites, Entomology and Preservation, Chemistry, Non Wood Forest Products, Pulp and Papers, Biomass Energy, and Biotechnology. Besides that, this journal also publishes review manuscripts which topics are decided by the Editors.
Arjuna Subject : Ilmu Pertanian dan Biologi (Semua) - Kehutanan
Articles 162 Documents
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Strength and Stiffness of Wooden Building using Static Equivalent Analysis Yosafat Aji Pranata
Wood Research Journal Vol 16, No 1 (2025): WOOD RESEARCH JOURNAL
Publisher : Masyarakat Peneliti Kayu Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51850/wrj.2025.16.1.15-20

Abstract

Wooden buildings can be used to support tourism infrastructure in the West Java region. This research aims to study the behavior of a wooden buildings due to designed earthquake loads. The function of the building is as a guest house. The scope used in the research are as follows the building functions as one of the tourism support infrastructure in Stamplat Village, Indragiri Village, Bandung Regency, West Java as a lodging building. The building uses a frame system concept with the main components being beams and columns of yellow Meranti wood (Shorea faguatiana). The size of the building is 30 m2. All cross-sections of beams and columns are rectangle. The static based shear load is calculated using equivalent static analysis. The stiffness (drift) is calculated according to Indonesian earthquake code SNI 1726:2019. Design the capacity of columns and beams (strength) using the reference to Indonesian wood code SNI 7973:2013. The research results show that the drift of the building due to the equivalent static earthquake load in the main direction of the building does not exceed the permit limits, the nominal capacity of the columns and beams meets the requirements and the value are lower than the maximum factored load combination. This research provides benefits, namely designing wooden buildings, even though the quality of the wood is limited, if designed properly, it can be used as an earthquake-resistant building.
Oleoresin Yield and Gum Rosin Properties from Sulawesi and Sumedang Sub-lines of Pinus merkusii Wood Sheany Citra Sukma Wijaya; Sigit Sunarta; Suryo Hardiwinoto; Daryono Prehaten; Wdiyatno Widiyatno; Ganis Lukmandaru
Wood Research Journal Vol 16, No 1 (2025): WOOD RESEARCH JOURNAL
Publisher : Masyarakat Peneliti Kayu Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51850/wrj.2025.16.1.9-14

Abstract

Progeny testing can be performed to reach high oleoresin production from Pinus merkusii. This study aimed to determine and compare the oleoresin yields and rosin properties of 15-year-old Pinus merkusii wood of the Sumedang and Sulawesi sub lines from the KPH Banyumas Barat plantation. Tree diameter and oleoresin yield were observed in 20 individual trees of each sub-line. Tree tappings were conducted by the drilling method for three days, which was replicated for five times over a 15-day observation period. Gum rosin samples were obtained from all trees by the hydro-distillation method. The results showed that the tree diameters at breast height and oleoresin yields of the Sumedang sub-line fell in the ranges 22.0–34.2 cm and 10.8 51.2 g/tree/3 days, respectively, whereas those of the Sulawesi sub-line fell within the ranges 19.4–31.2 cm and 11.6–50.4 g/tree/3 days, respectively. Based on t-test results, no significant difference was found between the two sub-lines. The gum rosin yields were 52–79% and 55–78% for the Sumedang and Sulawesi sub-lines, respectively. With regard to rosin properties, the softening point, acid number, saponification value, toluene-insoluble content, and volatile content were 77.80 ± 4.08°C, 189.51 ± 10.51, 216.54 ± 10.51, 0.08 ± 0.11%, and 3.78 ± 3.56%, respectively, for the Sumedang sub-line and 66.35 ± 6.55°C, 78.15 ± 2.92, 189.86 ± 10.68, 208.02 ± 10.50, 0.06 ± 0.11%, and 9.82 ± 2.95%, respectively, for the Sulawesi sub-line. Significant effects of sub-line were only observed in terms of saponification value and volatile content, where the rosin from the Sumedang sub-line had better properties than the rosin from the Sulawesi sub-line. These differences indicate different compositions of chemical components of oleoresin or rosin between sub-lines.

Page 17 of 17 | Total Record : 162

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