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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

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.

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

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.

Comparative Study of Flexural Behavior of Bolted-Laminated and Glue-Laminated Sengon Timber Beams (Albizia falcataria) Yosafat Aji Pranata; Anang Kristianto; Novi Novi
Wood Research Journal Vol 15, No 2 (2024): WOOD RESEARCH JOURNAL
Publisher : Masyarakat Peneliti Kayu Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51850/wrj.2024.15.2.43-48

This study aimed to study the flexural behavior of bolt-laminated and glue-laminated sengon (Albizia falcataria) timber beams, which are flexural strength, modulus of rupture (MoR), and beam ductility. The study was conducted using an experimental testing method in the laboratory with reference to the ASTM D198. The number of test objects were three consecutively for bolt-laminated beams and glue-laminated beams. Results obtained from this study indicated that the flexural strength of bolt-laminated and glue-laminated sengon timber beams was not significantly different; the flexural strength of bolt-laminated beams were 3.1% higher compared to glue-laminated beams. The MoR and ductility of bolt-laminated beams were 8.4% and 14.2% higher compared to glue-laminated beams. These results indicate that the glue has an impact to the brittle behavior or limited ductility, while the bolts have an impact to make a more ductile beams. The general conclusion is that mechanical laminated timber technology can be an alternative to producing beams with larger cross-sectional sizes compared to solid timber, especially for low-grade wood, so that it can be used as part of the structural elements of buildings.

Comparative Study of Flexural Behavior of Bolted-Laminated and Glue-Laminated Sengon Timber Beams (Albizia falcataria) Yosafat Aji Pranata; Anang Kristianto; Novi Novi
Wood Research Journal Vol 15, No 2 (2024): WOOD RESEARCH JOURNAL
Publisher : Masyarakat Peneliti Kayu Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51850/wrj.2024.15.2.43-48

This study aimed to study the flexural behavior of bolt-laminated and glue-laminated sengon (Albizia falcataria) timber beams, which are flexural strength, modulus of rupture (MoR), and beam ductility. The study was conducted using an experimental testing method in the laboratory with reference to the ASTM D198. The number of test objects were three consecutively for bolt-laminated beams and glue-laminated beams. Results obtained from this study indicated that the flexural strength of bolt-laminated and glue-laminated sengon timber beams was not significantly different; the flexural strength of bolt-laminated beams were 3.1% higher compared to glue-laminated beams. The MoR and ductility of bolt-laminated beams were 8.4% and 14.2% higher compared to glue-laminated beams. These results indicate that the glue has an impact to the brittle behavior or limited ductility, while the bolts have an impact to make a more ductile beams. The general conclusion is that mechanical laminated timber technology can be an alternative to producing beams with larger cross-sectional sizes compared to solid timber, especially for low-grade wood, so that it can be used as part of the structural elements of buildings.

Uji Beban (Load Test) Pelat Lantai dan Balok Pada Gedung GKI Gading Serpong Jakarta Kristianto, Anang; Pranata, Yosafat; Wiyono, Daud Rahmat; Suhanda, Felix; Shidney Rapar, Keysie Chelsie
Jurnal Abdimas Mandiri Vol. 10 No. 1 (2026)
Publisher : UNIVERSITAS INDO GLOBAL MANDIRI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36982/jam.v10i1.6960

Kegiatan Pengabdian kepada Masyarakat (PkM) ini merupakan hasil pemanfaatan teknologi uji beban dengan mitra PkM pengurus Gereja Kristen Indonesia (GKI) Gading Serpong. Metode kegiatan PkM yaitu pengujian eksperimental non-destruktif untuk mendapatkan data mutu material pada bangunan eksisting. Dalam proses pembangunan Gedung Gereja GKI Gading Serpong ditemukan ketidaksesuaian antara mutu beton hasil pengecoran di lapangan dengan mutu beton yang direncanakan. Untuk memastikan keamanan dan kemampuan struktur sesuai standar perencanaan, dilakukan pengujian beban (load test) sebagai bagian dari evaluasi teknis berbasis kondisi aktual lapangan. Pengujian dilakukan dengan metode pembebanan statistik monotonik selama periode pengamatan tertentu untuk merepresentasikan beban layanan. Hasil pengolahan data lendutan kemudian dibandingkan dengan batas layan yang dipersyaratkan dalam standar perencanaan struktur. Selanjutnya hasil pengujian menunjukkan bahwa lendutan maksimum yang terjadi pada balok kantilever maupun pelat masih berada dalam batas layan yang diizinkan. Setelah beban dikurangi, terjadi pemulihan deformasi yang signifikan sehingga elemen struktur kembali mendekati kondisi awal. Hasil kegiatan PkM memberikan informasi dan rekomendasi kepada mitra bahwa elemen struktur yang diuji dinyatakan aman dan layak untuk dilanjutkan sesuai tahapan konstruksi.

Studi efektifitas penggunaan dinding geser pada bangunan hotel 15 lantai di Magelang, Jawa Tengah Faraz Haiatul Maknun; Yosafat Aji Pranata
PADURAKSA: Jurnal Teknik Sipil Universitas Warmadewa Vol. 14 No. 2 (2025)
Publisher : Program Studi Teknik Sipil, Fakultas Teknik dan Perencanaan, Universitas Warmadewa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22225/pd.14.2.12550.285-297

Earthquake-resistant buildings are structures designed to withstand lateral loads caused by earthquakes without damaging their structural elements. One effort that can be made is to use shear walls in medium-rise buildings. The purpose of this study is to study the behavior of the Aloon-Aloon Hotel multi-storey building located in Magelang City, which has medium soil characteristics with SDS of 0.61g and SD1 of 0.45g, risk category II. The scope of the study is a comparative study of buildings modeled with and without shear walls. Earthquake load planning refers to SNI 1726:2019 with the equivalent static analysis method. The process of modeling the building structure in this study uses three-dimensional structural analysis software based on the finite element method to study the behavior of the structure due to gravity loads and lateral loads. The results of the study are that buildings with shear walls have a higher building structure volume of 7.74% (shear walls, columns, beams) than buildings without shear walls (columns and beams). However, the use of shear walls produces lower deviation and capital values compared to buildings without shear walls, so that the building has high lateral stiffness in resisting lateral loads (designed earthquake loads). This shows that the use of shear walls significantly improves the strength and stiffness performance of structures in medium-rise buildings.

Evaluasi Level Kinerja Bangunan Gedung Kayu Bertingkat Rendah Akibat Beban Gelombang Yosafat Aji Pranata; Fadlillah Ariani Suroso; Bernardinus Herbudiman
Bentang : Jurnal Teoritis dan Terapan Bidang Rekayasa Sipil Vol 9 No 1 (2021): BENTANG Jurnal Teoritis dan Terapan Bidang Rekayasa Sipil
Publisher : Universitas Islam 45

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33558/bentang.v9i1.2197

Several coastal areas in Indonesia are at risk of moderate to high tsunami disasters, this is related to the condition that Indonesia is located in an earthquake high risk area. At this time there are many buildings located on the coast with a low-rise stilt house system with the main structural system, namely beams and columns using timber materials. The building structure design includes the performance evaluation process, namely strength, stiffness and structural stability. The purpose of this research is to study the evaluation behavior of performance levels, especially the strength and stiffness of low-rise timber buildings, namely the level of structural performance due to gravity and lateral loads, namely sea waves. The research scope is a three-story building with a beam and column frame structure system. Columns are circular and beams have a square cross section. The loads taken into account are gravity and lateral. The strengths discussed are the bending capacity of the beam and the compressive capacity of the column. In order to obtain building behavior that is closer to real conditions, especially in beam-column joints, secondary data is used, namely empirical data on the envelope load-deformation curve of the beam-column joint test results in the laboratory (modeled as link property). Evaluation of structural performance begins with structural analysis using SAP2000 software, to obtain internal forces and building drift. The results show that the use of link properties in beam-column joint joints in the timber building structures shows greater deformation results compared to rigid joint models, this indicates that modeling the structure with beam-column joint joints modeled as link property has an impact on building stiffness. Lower and represents the condition of a timber building with beam-column joint characteristics closer to the actual condition. The existence of a hole size in the column (to insert the beam) which is larger than the cross-sectional size of the beam results in the rotation of the joint not being zero and a slip occurs when the joint works to transmit internal forces.

Dynamic Elastic Moduli of Teak Wood (Tectona grandis): Case study of Existing Buildings in Yogyakarta Yosafat Aji Pranata; Olga Catherina Pattipawaej; Amos Setiadi
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

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.

Comparative Study of Equivalent Static Analysis and Dynamic Response Spectrum Analysis on 5-Storey Mall Building in Magelang Sutantra Hartono; Yosafat Aji Pranata
Bentang : Jurnal Teoritis dan Terapan Bidang Rekayasa Sipil Vol 14 No 1 (2026): BENTANG Jurnal Teoritis dan Terapan Bidang Rekayasa Sipil (January 2026)
Publisher : Universitas Islam 45

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33558/bentang.v14i1.11076

The Aloon-Aloon Mall Magelang is a five-story building located in an earthquake-prone zone due to the meeting of the Eurasian and Indo-Australian Plates. This condition requires a structural design that meets earthquake resistance standards. However, there is no specific study related to the seismic response of the building based on local conditions. Therefore, this study is important to evaluate the performance of structures against earthquake loads in order to improve safety and reduce potential losses. Earthquake-resistant buildings are buildings that are designed and constructed with the aim of minimizing damage from earthquakes. This research aims to determine the performance of structures against earthquake loads based on SNI 1726:2019 regulations. The evaluation process is carried out with 3-dimensional modeling of buildings using ETABS software. This research analyzes the seismic response of a 5-storey mall building in Magelang City using the equivalent static analysis method and spectrum response. Structural modeling was conducted using ETABS and SAP2000, focusing on the deformation and internal forces in beams and columns due to earthquake loads. The analysis results based on both static equivalent and spectrum response programs were conducted to compare the two methods used. Based on the analysis, the response spectrum analysis resulted in a larger dislacement in the x-direction of 29.85 mm compared to the equivalent static analysis of 24.95 mm. Magelang Mall is stable to the earthquake loads that occur and there is no need to repair the structure.

Kegiatan PkM Pengujian Hammer Test dan UPV Elemen Kolom, Balok, dan Pelat Lantai pada Bangunan Gedung Gereja GKI Gading Serpong, Banten Anang Kristianto; Yosafat Aji Pranata; Daud Rahmat Wiyono; Keysie Chelsie Shidney Rapar
Jurnal Abdimas Kartika Wijayakusuma Vol 7 No 2 (2026): Jurnal Abdimas Kartika Wijayakusuma
Publisher : LPPM Universitas Jenderal Achmad Yani

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26874/jakw.v7i2.1389

Kegiatan Pengabdian kepada Masyarakat (PkM) ini dilaksanakan pada bangunan Gereja Kristen Indonesia (GKI) Gading Serpong untuk mengevaluasi mutu dan kondisi struktur beton sebelum bangunan difungsikan. Evaluasi dilakukan menggunakan metode non-destructive test (NDT), yaitu Hammer Test dan Ultrasonic Pulse Velocity (UPV), pada elemen kolom, balok, dan pelat lantai guna menilai kesesuaian mutu beton terhadap spesifikasi perencanaan. Hasil pengujian Hammer Test menunjukkan perkiraan kuat tekan rata-rata beton sebesar 14,5 MPa pada pelat, 21,5 MPa pada balok, dan 25,4 MPa pada kolom. Sementara itu, hasil pengujian UPV pada elemen kolom menunjukkan kecepatan rambat gelombang berkisar antara 3.500–4.500 m/s yang termasuk dalam kategori “good condition”, mengindikasikan bahwa beton memiliki tingkat homogenitas dan integritas yang baik. Variasi hasil yang diperoleh pada beberapa titik pengujian diduga dipengaruhi oleh jalur rambat gelombang yang melewati tulangan longitudinal sehingga menghasilkan nilai kecepatan yang berbeda. Secara umum, hasil evaluasi menunjukkan bahwa kondisi struktur beton masih memenuhi kriteria kelayakan untuk digunakan. Namun, untuk memperoleh nilai kuat tekan aktual yang lebih akurat, disarankan dilakukan pengujian lanjutan berupa core drill atau coring beton. Hasil kegiatan ini dapat menjadi dasar dalam menentukan kelayakan struktur serta rekomendasi tindak lanjut teknis pada bangunan yang dievaluasi.

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