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Jurnal Spesialis Teknik Sipil (JSpTS)
Published by Universitas 17 Agustus 1945 Surabaya
ISSN : -     EISSN : 27146227     DOI : https://doi.org/10.30996/jspts.v2i01.7098
Core Subject : Engineering,
Civil Engineering, Building, Construction & Architecture Engineering Transportation
Jurnal Spesialis Teknik Sipil (JSpTS), as a medium of communication and dissemination of research results and scientific work in Construction Project Management. Our scope includes Civil Engineering, Risk Management, Value Engineering, Health, Safety, and Environment Management. Jurnal Spesialis Teknik Sipil (JSpTS), sebagai media komunikasi dan diseminasi hasil penelitian dari bidang Ilmu Manajemen Proyek Konstruksi meliputi dan tidak terbatas pada bidang Teknik Sipil, Manajemen Risiko, Rekayasa Biaya, Keselamatan Kesehatan Kerja dan Lingkungan.
Arjuna Subject : Teknik (semua kategori) - Teknik Sipil dan Struktur
Articles 51 Documents
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Perencanaan Akibat Gempa Pada Bangunan Cagar Budaya, Istana Mini Banda, Kawasan Pulau Banda Neira Rumihin, Angel; Rumihin, Ony Frengky
Jurnal Spesialis Teknik Sipil (JSpTS) Vol 6 No 1 (2025)
Publisher : Magister Teknik Sipil, Fakultas Teknik, Universitas 17 Agustus 1945 Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30996/jspts.v6i1.131844

Abstract

The Mini Palace of Banda is a cultural heritage building located on Banda Neira Island, Central Maluku Regency, Maluku Province. Several earthquakes, including the significant event on January 10, 2023, have severely impacted historical structures in the region, including the Mini Palace. This study aims to develop a restoration plan for earthquake-induced damages while adhering to cultural heritage conservation principles. The research methods include an analysis of the existing building conditions, structural evaluations, and cost estimation for rehabilitation efforts. The findings indicate damage to the main Mini Palace building, the residence building, auxiliary buildings, and the exile house of Bung Hatta. Structural evaluations highlight the need for repairs to the roofing, walls, and reinforcement of the foundations to ensure the stability of the structures. Rehabilitation cost estimations reveal allocation proportions of 20.10% for the Mini Palace, 8.254% for the residence building, and 16.95% for the auxiliary buildings from the total budget of IDR 15,660,455,000.00. This study contributes by providing a technical planning framework for the post-earthquake rehabilitation of cultural heritage buildings while preserving their historical, architectural, and cultural values.
Strategi dan Arahan Pengembangan Infrastruktur Objek Wisata untuk Meningkatkan Daya Tarik dan Keberlanjutan Pantai Kampe Emely, Shofi Nindia; Soetjipto, Jojok Widodo; Listyawati, Ratih Novi
Jurnal Spesialis Teknik Sipil (JSpTS) Vol. 6 No. 2 (2025)
Publisher : Magister Teknik Sipil, Fakultas Teknik, Universitas 17 Agustus 1945 Surabaya

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Abstract

Infrastructure plays an important role in developing regions, particularly in the economic, social, cultural, and environmental aspects. One of the regions experiencing development is Banyuwangi Regency, particularly in the tourism sector, as it has the greatest tourist attractions, thus having the potential to support economic growth. Kampe Beach is one of the designated tourism areas with natural tourist attractions in Banyuwangi Regency. Based on the 2012-2032 Banyuwangi Regency Spatial Plan, Kampe Beach is included in the Tourism Development Area (WPP) I. The infrastructure owned by Kampe Beach is still inadequate and there are several supporting tourism infrastructures that are not yet available. Therefore, there is a need for infrastructure development directions that can support tourism activities at Kampe Beach so that it can assist the Banyuwangi Regency government in developing the region. This study aims to determine the existing condition of Kampe Beach and the level of importance and performance of Kampe Beach infrastructure so that directions for Kampe Beach infrastructure development can be formulated to support the tourism sector in Banyuwangi Regency. The methods used in this study are descriptive analysis to identify existing conditions, the Importance-Performance Analysis (IPA) method to determine the level of importance and performance of each research variable, and triangulation analysis to formulate infrastructure development directions. This study determined the sample using the Lemeshow formula and produced 67 respondents to determine the level of importance and performance of the predetermined variables. The results of the study indicate that infrastructure that requires development directions is located in quadrant I consisting of waste, road networks, road signs, parking lots, and security posts. Development directions that need to be carried out at the research location include conducting socialization and training, procuring infrastructure that is not yet available, and placing road signs more strategically.
Studi Penelitian Faktor Air Cementitious pada Beton Geopolimer Berbasis Fly Ash (Batu Bara) Berdasarkan Kuat Tekan Naitkaki, Fridolin A. M. A. Sani; Priskasari, Ester; Roostrianawaty, Nenny
Jurnal Spesialis Teknik Sipil (JSpTS) Vol. 6 No. 2 (2025)
Publisher : Magister Teknik Sipil, Fakultas Teknik, Universitas 17 Agustus 1945 Surabaya

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Abstract

Fly ash based geopolymer concrete is an environmentally friendly alternative that can replace conventional Portland cement based concrete. This study aims to analyze the effect of the water cementitious (W/C) ratio on the compressive strength of Type C fly ash based geopolymer concrete from the Paiton Power Plant, as well as to determine the correlation between the water cementitious ratio and the concrete's compressive strength. The variations of the water cementitious ratio used were 0,35, 0,4, 0,45, 0,5, 0,55, 0,6, and 0,65. The alkaline activator used consisted of 8 M potassium hydroxide (KOH) and sodium silicate (Na₂SiO₃) with a ratio of 3:1. The test specimens, in the form of concrete cylinders (Ø15 cm × 30 cm), were tested at the ages of 3 and 7 days using the room temperature curing method. The results show that the compressive strength of the geopolymer concrete decreases with the increase of the water cementitious (W/C) ratio. At 3 days, the highest compressive strength of 28,42 MPa was achieved at a W/C of 0,35, while the lowest was 17,94 MPa at a W/C of 0,65. At 7 days, the highest compressive strength reached 37,13 MPa (W/C 0,35) and the lowest was 23,89 MPa (W/C 0,65). The concrete slump value increased with the increase in the W/C ratio, with the highest value of 18,4 cm at a W/C of 0,65. The test results conclude that the water cementitious (W/C) ratios of 0,35, 0,4, 0,45, 0,5, 0,55, 0,6, and 0,65 have a significant effect on the compressive strength of geopolymer concrete, where a higher water cementitious (W/C) ratio results in lower compressive strength.
Studi Perbandingan Pengaruh Variasi Bentuk Lengkung terhadap Stabilitas Struktur Jembatan Pelengkung: Studi Kasus Model Kompetisi Jembatan Indonesia XIX Tahun 2024 Bestari, Legat; Priskasari, Ester; Sunarwadi, Hadi Surya Wibawanto
Jurnal Spesialis Teknik Sipil (JSpTS) Vol. 6 No. 2 (2025)
Publisher : Magister Teknik Sipil, Fakultas Teknik, Universitas 17 Agustus 1945 Surabaya

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Abstract

Arch bridges represent a widely favoured structural form, celebrated for their inherent efficiency and aesthetic appeal. Variations in arch geometry, such as circular and parabolic shapes, exert a significant influence on both the structural stability and load distribution within the design. This research endeavours to conduct a comparative analysis of how distinct arch geometries—specifically circular and parabolic—impact the structural stability of arch bridges. The investigation centres on a case study utilising a model arch bridge from the 19th Indonesian Bridge Competition (KJI) in 2024. The methodology employed involves structural analysis facilitated by SAP2000 v.24 software, adhering strictly to the guidelines set forth by KJI XIX 2024 and SNI 1729:2020 for comprehensive evaluation. Key parameters subjected to analysis included internal forces, stress, strain, deflection, and material efficiency. The analytical findings reveal that the bridge model incorporating a parabolic arch demonstrates superior performance. While the maximum axial forces in the arch rib and hangers were higher in the parabolic model, this model exhibited substantially lower bending moments in the arch rib (45.36 kNmm) and longitudinal girder (32.55 kNmm) when compared to the circular arch model (86.51 kNmm and 87.41 kNmm). Furthermore, the maximum deflection observed in the parabolic model (1.75 mm) was notably less than that of the circular model (2.21 mm). In terms of material consumption, the parabolic arch bridge model proved more efficient, with a total weight of 19.19 kg, making it 51.9% lighter than the circular arch bridge model, which weighed 37 kg. In conclusion, the parabolic arch form imparts enhanced structural stability and greater material efficiency, proving more effective in channelling loads primarily into pure compressive forces, thereby mitigating overall bending moments and deformations.
Perencanaan Perbaikan Tanah dengan Menggunakan PVD (Prefabricated Vertical Drain) dan Timbunan (Preloading) pada Pembangunan Gedung ITS Tower 3 Kurniawan, Agista Tri; Imananto, Eding Iskak; Yudianto, Eri Andrian
Jurnal Spesialis Teknik Sipil (JSpTS) Vol. 6 No. 2 (2025)
Publisher : Magister Teknik Sipil, Fakultas Teknik, Universitas 17 Agustus 1945 Surabaya

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Abstract

The construction of ITS Tower 3 in Surabaya faces challenges due to the presence of soft clay soil characterized by low bearing capacity, high compressibility, and low permeability, which pose risks of significant settlement and endanger the stability of high-rise structures. To address this issue, soil improvement was planned using the preloading method combined with Prefabricated Vertical Drain (PVD) installation to accelerate the consolidation process. This study aims to analyze the magnitude of soil settlement and consolidation time under untreated conditions and compare them with conditions after applying PVD with different installation patterns (triangular and square) and spacing variations (1.0 m–1.6 m). The research methods include analyzing field and laboratory soil test data, calculating consolidation parameters, and simulating consolidation time based on different PVD configurations. The results show that PVD application significantly accelerates consolidation time compared to untreated soil, with triangular patterns at closer spacing providing higher efficiency despite requiring higher costs. Furthermore, the combination of preloading and PVD proved effective in accelerating initial settlement before structural construction, thereby reducing the risk of long-term deformation.
Rencana Keselamatan Konstruksi pada Proyek Pembangunan Gedung Bertingkat: Evaluasi dan Pengembangan Indarta, Fhirtania Ashril; Soetjipto, Jojok Widodo; Ratnaningsih, Anik
Jurnal Spesialis Teknik Sipil (JSpTS) Vol. 6 No. 2 (2025)
Publisher : Magister Teknik Sipil, Fakultas Teknik, Universitas 17 Agustus 1945 Surabaya

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Abstract

Multi-story building construction projects have high complexity, involving many stakeholders with different skills and competencies. Therefore this project has a threat of failing to comply with security, safety, health, and sustainability (K4) standards. The government requires each project development stage to implement a Construction Safety Plan (RKK), but in reality, many construction activities still need to pay attention to this standard. Therefore it is necessary to evaluate RKK implementation in construction projects to minimize construction accidents. This study aims to determine the implementation of construction safety planning stages in building projects. This research will take a case study of the Regent's Office Building Project and the Regional Secretariat of Pasuruan Regency by conducting direct observations and interviews to evaluate the implementation of the RKK. The study results show that all components of the RKK are available, but the analysis of the potential hazards that may occur still needs to be improved. Job safety analysis as a construction safety plan has yet to be supported by proper hazard identification, risk assessment, and risk control following the implemented implementation method. This research can use the Hazard Identification, Risk Assessment, and Risk Control (HIRARC) method to solve this problem. The results of the HIRARC method assessment adjusted for the available variables according to the project implementation method yielded the following results. There were 26 variables with low risk, 57 with medium risk, and 21 with high risk. The hazard risk control strategy is prepared based on the OHS risk control hierarchy, namely engineering control, administrative management, and provision of PPE, because almost all activities in building work do not allow for eliminating risks using elimination and substitution.
Evaluasi Pengaruh Penambahan Limbah HDPE pada Campuran Aspal terhadap Karakteristik Marshall Amir Akh. Faizal; Prikasari Ester; Wibawanto Hadi Surya
Jurnal Spesialis Teknik Sipil (JSpTS) Vol. 7 No. 1 (2026)
Publisher : Magister Teknik Sipil, Fakultas Teknik, Universitas 17 Agustus 1945 Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30996/jspts.v7i1.133534

Abstract

Road infrastructure is one of the key components in supporting mobility and economic growth. However, the quality of road pavement often deteriorates due to high traffic loads and changes in environmental conditions. Therefore, innovative efforts are needed to improve the performance of asphalt mixtures. One approach that can be taken is the use of High Density Polyethylene (HDPE) plastic waste as an additive in asphalt mixtures. This study aims to investigate the effect of adding HDPE waste on the characteristics of AC-WC (Asphalt Concrete – Wearing Course) asphalt mixtures using the Marshall method through dry mixing. The variations in HDPE content used are 0%, 3%, 5%, 7%, and 9% of the asphalt weight. Tests were conducted to obtain Marshall parameters such as stability, flow, Marshall Quotient (MQ), Void in Mix (VIM), Void in Mineral Aggregate (VMA), and Void Filled with Bitumen (VFB). The results of the study indicate that the addition of HDPE waste significantly affects the stiffness and stability of the mixture. At certain concentrations, mixtures containing HDPE can enhance stability and Marshall Quotient values, making the mixture stiffer and more resistant to traffic loads. However, excessive HDPE addition tends to reduce mixture flexibility, as indicated by decreased flow values. The optimal HDPE concentration in this study was found to be around 5%–7%, where the mixture meets Marshall specifications and provides the best performance. The use of HDPE plastic waste in asphalt mixtures not only improves road pavement quality, but also contributes positively to plastic waste management and environmental sustainability.
Perbandingan Perilaku Struktur Kolom Berjenjang dan Tidak Berjenjang Gedung FMIPA Universitas Gadjah Mada Yogyakarta Fernando Priatama; Sudirman Indra; Mohammad Erfan
Jurnal Spesialis Teknik Sipil (JSpTS) Vol. 7 No. 1 (2026)
Publisher : Magister Teknik Sipil, Fakultas Teknik, Universitas 17 Agustus 1945 Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30996/jspts.v7i1.133535

Abstract

Yogyakarta is located in a high seismic risk zone, making earthquake-resistant structural design essential especially for multi-story educational buildings like the FMIPA UGM facility. This study compares two structural configurations: stepped columns and non-stepped columns, using the Special Moment Resisting Frame System (SMRFS) in accordance with SNI 1726:2019, SNI 1727:2020, and SNI 2847:2019. Structural analysis was conducted using ETABS software to evaluate key parameters such as fundamental period, base shear force, and inter-story drift. The results reveal that the stepped column configuration yields a shorter vibration period, lower base shear, and reduced inter-story drift compared to the non-stepped column structure. The maximum drift occurs on the 10th floor, with a difference of 19.19% in the X direction and 16.2% in the Y direction. These findings suggest that stepped columns enhance structural efficiency and seismic performance in multi-story buildings. Moreover, the stepped configuration may reduce structural damage and improve occupant comfort during seismic events. This research contributes valuable insights to the development of earthquake-resistant design strategies in disaster-prone regions, offering practical recommendations for engineers and designers seeking to optimize structural resilience and safety.
Kinerja dan Kapasitas Struktur Bangunan Eksisting sesuai Prinsip Evaluasi ASCE 41-17 Shinta Berlinda Wulandari; Hanie Teki Tjendani; Buntara Sthenly Gan
Jurnal Spesialis Teknik Sipil (JSpTS) Vol. 7 No. 1 (2026)
Publisher : Magister Teknik Sipil, Fakultas Teknik, Universitas 17 Agustus 1945 Surabaya

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Abstract

Indonesia is located in a highly active seismic region due to its position along the Pacific Ring of Fire, causing many existing buildings to remain vulnerable to earthquake loads, particularly structures designed using outdated seismic codes. This study aims to evaluate the performance and structural capacity of an existing reinforced concrete building based on the performance-based evaluation principles of ASCE 41-17 integrated with SNI 1726:2019 and SNI 2847:2019. The research employed a quantitative analytical method using numerical simulation through Tier 1 – Screening Procedure and Tier 3 – Systematic Procedure. Structural performance evaluation was conducted using nonlinear static pushover analysis to determine capacity curves, plastic hinge formation, drift behavior, and structural performance levels. The results indicate that the existing structure still contains several structural deficiencies, particularly in columns and lateral force-resisting systems. The pushover analysis shows that the structure is still capable of resisting moderate earthquake demands; however, its capacity and ductility decrease significantly under higher seismic intensity. The structure does not fully satisfy the Immediate Occupancy (IO) and Life Safety (LS) performance levels, although under certain conditions it still achieves Collapse Prevention (CP). Plastic hinge distribution concentrated in column elements indicates that the strong column–weak beam mechanism has not been achieved optimally, making columns the critical elements controlling global structural stability. Overall, the ASCE 41-17 performance-based evaluation approach proves effective in assessing the seismic performance and capacity of existing buildings and can serve as a basis for determining structural strengthening or retrofit requirements.
Perhitungan Biaya Perkuatan Struktur Bangunan Hotel Eksisting Berdasarkan SNI 1726:2012 Menggunakan Carbon Fiber Reinforced Polymer (CFRP) Aviska Triayaska; Hanie Teki Tjendani; Buntara Sthenly Gan
Jurnal Spesialis Teknik Sipil (JSpTS) Vol. 7 No. 1 (2026)
Publisher : Magister Teknik Sipil, Fakultas Teknik, Universitas 17 Agustus 1945 Surabaya

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Abstract

The change in earthquake standards from SNI 1726:2012 to SNI 1726:2019 has increased earthquake load demands in several regions in Indonesia, including Surabaya City, so an evaluation of the safety of existing buildings is needed. This study aims to calculate the cost of strengthening the structure of an existing hotel building using the Carbon Fiber Reinforced Polymer (CFRP) method due to increased earthquake loads based on the latest standards. The object of the study is a 10-story hotel building designed using SNI 1726:2012. Structural analysis was carried out using SAP2000 V.26.3.0 with the pushover analysis method based on ASCE 41-17 to determine structural elements that require rehabilitation. Elements that experience performance exceeding the Collapse Prevention (CP) limit are planned to use CFRP reinforcement according to ACI 440.2R-17 guidelines. Furthermore, the calculation of the work volume and the Cost Budget Plan (RAB) was carried out based on the unit price of work in Surabaya City. The results of the study indicate that the B6-1 Beam element (150 mm × 400 mm) on several floors requires CFRP reinforcement with a total work volume of 28.35 m2. Based on the results of the cost analysis, the unit price of the work is Rp. 2,389,987.46/m2 with a total rehabilitation cost of Rp. 67,756,144.46. The use of CFRP is considered effective in increasing the capacity and ductility of the structure without significantly increasing the building mass, although it has a relatively high initial cost compared to conventional methods.

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