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All Journal JeLAST : Jurnal Teknik Kelautan , PWK , Sipil, dan Tambang Jurnal Teknik Sipil SELAPARANG: Jurnal Pengabdian Masyarakat Berkemajuan CRANE: Civil Engineering Research Journal
Yoke Lestyowati
Department Of Civil Engineering, Tanjungpura University, Pontianak
Agriculture, Biological Sciences & Forestry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Economics, Econometrics & Finance Education Engineering Environmental Science Health Professions Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Medicine & Pharmacology Nursing Public Health Social Sciences Other

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Journal : Jurnal Teknik Sipil

 1 
Selection of Effective Column Configuration in Nahdlatul Ulama University Flat in Kalimantan Barat Province Vonia, Teresa; Yusuf, M.; Lestyowati, Yoke
Jurnal Teknik Sipil Vol 24, No 3 (2024): Vol 24, No 3 (2024): JURNAL TEKNIK SIPIL EDISI AGUSTUS 2024
Publisher : Fakultas Teknik Universitas Tanjungpura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26418/jts.v24i3.86218

Abstract

This study analyzes the structural performance of square, rectangular, and circular columns in the Nahdlatul Ulama University Flat (UNU Flat), Kubu Raya, West Kalimantan. Data included structural designs, seismic analysis, and specifications. Using interaction diagrams, square columns (400 x 400 mm, 12D16) demonstrated sufficient axial and bending load capacities, handling up to 2,500 kN and 200 kNm. Replacing them with circular columns (300 mm diameter) reduced the cross-sectional area but maintained safety. Rectangular columns (400 x 550 mm, 14D16) also showed strong load resistance with safe interaction points. Substituting these with circular columns (500 mm diameter) preserved structural safety. All column configurations met load and safety requirements, with circular columns offering potential material efficiency and more straightforward construction. The results confirm stability and strength under varying loads, emphasizing the feasibility of circular columns for optimized performance.
Analysis of Surface Texture of Asphalt Mixture with Sand Circle Method Sulandari, Eti; Lestyowati, Yoke; Widodo, Slamet; Felderika, Felderika; Sutarno, Sutarno
Jurnal Teknik Sipil Vol 24, No 3 (2024): Vol 24, No 3 (2024): JURNAL TEKNIK SIPIL EDISI AGUSTUS 2024
Publisher : Fakultas Teknik Universitas Tanjungpura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26418/jts.v24i3.85641

Abstract

A road is usually defined as an infrastructure connecting a zone to other zones. As service and safety are essential for vehicle users, any conditions related to the pavement, including surface texture, are considered. The importance of this matter is that many researchers or practitioners are concerned with the quality of asphalt mixtures, whether structural or functional, which affect the safety and security of road users, mainly related to the texture of the pavement surface. This research aims to determine the texture depth (MTD, Mean Texture Depth). The research method used is the circle sand method, which is tested using the Sand Patch tool. The asphalt mixture type uses AC-WC with a composition of 39% coarse aggregate, 54.5% fine aggregate, and 6.5% filler. Optimum Asphalt Content of 6.28% and Density of 2.28 were obtained, and texture depth of 0.549 mm was more significant than 0.45 mm (Bina Marga 2010 revision 3). The conclusion is based on the design composition of the aggregate mix in the AC-WC asphalt mixture, which has a safe texture.
EXPERIMENTAL FLEXURAL STRENGTH OF GLASS FIBER REINFORCED POLYMER (GFRP) HYBRID REINFORCED CONCRETE BEAMS Lestyowati, Yoke; Herawati, Henny; Panandita, Budi Satria
Jurnal Teknik Sipil Vol 23, No 3 (2023): JURNAL TEKNIK SIPIL EDISI AGUSTUS 2023
Publisher : Fakultas Teknik Universitas Tanjungpura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26418/jts.v23i3.67972

Abstract

Materials technology is an excellent opportunity to be developed industrially and on a needs scale according to the demands of society, namely supporting the environment, low maintenance, and long-term use. Using composite materials with reinforced polymers is a hot topic of discussion in civil engineering as new materials, strength/stiffness enhancers, or applications in building rehabilitation or renovation. Fiber Reinforced Polymer (FRP) is excellent as a new material because, in addition to being lightweight, corrosion resistant, and easy to work with, it also has high flexural strength, so it is a consideration to replace and or strengthen steel materials that are high in cost value. However, until now there has not been found the correct pattern or variant and volume of fibre so that it can be an alternative to the use of steel. The purpose of the study was to experimentally determine the flexural strength of Glass Fiber Reinforced Polymer (GFRP) hybrid beams either with steel reinforcement, with GFRP reinforcement, or with steel and GFRP combination reinforcement and different GFRP ratios (variants) through two-point load bending tests.The designed model is a development of a previous study that used one layer of 4 mm and produced a flexural strength smaller than the targeted flexural strength, so in this study, two layers of 8 mm were used. In addition, other experimental data that has been carried out from the literature is also used where the results of parametric studies provide evidence of the positive effect of hybrid steel and GFRP reinforcement ratios when obtaining GFRP models and volumes.The materials used to manufacture concrete beam test specimens 53x15x15 cm3 with quality of fc'35MPa have been tested according to SNI standards and meet both the minimum and maximum requirements specified. Based on the results of the material test, it is planned that the characteristic concrete quality fcr'=40.31 MPa, and based on the compressive strength test, the quality fcr'=41.68MPa is produced.The hybrid designed material with concrete or concrete and steel has been tensile tested with a maximum arcing load for the two layers = 8 mm variant; the tensile strength of the GFRP woven roving type with two layers 2 x 4 mm is 92.66 MPa. While plain steel reinforcement Diameter 8mm quality 280 MPa has a minimum tensile strength of 350 MPa (3.8 times the tensile strength of GFRP 8 mm).The results of testing and calculating the effect of GFRP as a substitute for steel reinforcement contributed to the flexural strength of concrete beams on average by 47.52%. In comparison, the contribution of flexural strength produced by concrete with steel reinforcement was 107.09%. The concrete variant of hybrid steel reinforcement and GFRP contributes to an increase in the average flexural strength of 117.02% 4.8% compared to steel-reinforced concrete beams alone.
Co-Authors - elvira Abdul Hamid Adianto, Bobby Antonius Giovanni Soewarno Arsanti, Peggi Yunda Aryanto Aryanto Aryanto, - Awaldiansyah, Suhardy Azwar, Muhammad Iqbal Barie Danu Hartono Budi Satria Panandita charniago, Paulus Cheriandi, Alvin Alfrendo Diana Dwi Utami Egy Berathayoga, Ida Bagus EKO YULIANTO Elvira Elvira Elvira Elvira Eti Sulandari Faisal Faisal Felderika, Felderika Gatot Setya Budi Gunawan, Hengky Christian Herawati, Henny Ibrahim Ibrahim Kartini Kartini Lingga, Andry Alim Luastika, Gian Ningsih M. Yusuf M. Yusuf Muhammad Hilman Afif Muhammad Indra Muhammad Yusuf Mungok, Chrisna D, Nurfadhilah, Atikah Petronela Chu Melina Aschida Rahmasari, Puspita Siswoyo Hadi Slamet Widodo Stella, Cindy Meilinda Sutarno Sutarno Veronika Sri Jayanti Vonia, Teresa Yeyen Kurnia Sandy