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INDONESIA
Jurnal Konstruksi
Published by Institut Teknologi Garut
ISSN : 14123614     EISSN : 23027320     DOI : https://doi.org/10.33364/konstruksi
Core Subject : Engineering,
Civil Engineering, Building, Construction & Architecture
Jurnal Kosntruksi yang dapat menampung dan mempublikasikan hasil karya penelitian, karya tulis dan pengabdian masyarakat baik mahasiswa dan dosen-dosen intern maupun dari pihak luar. Jurnal Konstruksi memberikan informasi yang diperoleh dari laboratorium dan workshop penelitian maupun dari lapangan/ studi kasus di dunia nyata dengan cakupan (Scope of Journals) bidang meliputi struktur transportasi/ infrastruktur, air, geoteknik, manajemen konstruksi, dan lingkungan. Melalui jurnal konstruksi diharapkan dapat menampung semua inspirasi bidang teknik sipil sehingga didapatkan pemecahan masalah yang dihadapi dan mampu melahirkan inovasi baru dibidangnya.
Arjuna Subject : Teknik (semua kategori) - Teknik Sipil dan Struktur
Articles 417 Documents
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Evaluasi Metode Meyerhof dan Schmertmann–Nottingham Berbasis CPT untuk Meningkatkan Reliabilitas Estimasi Qu Jarmiati Pinkan Ladiyana; Agata Iwan Candra
Jurnal Konstruksi Vol 24 No 1 (2026): Jurnal Konstruksi
Publisher : Institut Teknologi Garut

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33364/konstruksi/v.24-1.3164

Abstract

Differences in pile dimensions and layered soil geotechnical characteristics have the potential to reduce the accuracy of foundation bearing capacity estimation; therefore, a more accurate and verified calculation approach is required. This study evaluates the ultimate bearing capacity (Qu) based on Cone Penetration Test (CPT) data by comparing the Meyerhof method and the Schmertmann–Nottingham method for piles with diameters of 20 cm, 40 cm, and 60 cm at two test locations (S1 and S2). The evaluation results indicate that the Schmertmann–Nottingham method produces higher Qu values than the Meyerhof method for all pile diameter variations, with a very strong linear relationship between pile diameter and Qu, as indicated by the coefficient of determination (R2 >= 0.97). Statistical validation using ANOVA proves that both the calculation method and pile diameter have a significant effect on Qu, with pile diameter being the dominant factor in increasing the sensitivity and reliability of ultimate bearing capacity estimation based on CPT data.
Klasifikasi Tingkat Risiko K3 pada Proyek Konstruksi Berkelanjutan Berbasis Matriks Risiko AS/NZS 4360 Dimas Prasetyo; Imam Mustofa
Jurnal Konstruksi Vol 24 No 1 (2026): Jurnal Konstruksi
Publisher : Institut Teknologi Garut

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33364/konstruksi/v.24-1.3169

Abstract

High-rise building construction projects involve a high level of hazards and uncertainty, requiring the systematic implementation of occupational safety risk management. This study aims to identify and classify occupational health and safety (OHS/K3) risk levels and to formulate control measures for high-rise building construction projects. The research method employs a quantitative approach through the distribution of questionnaires to 39 respondents, with risk analysis based on the standard AS/NZS 4360:2004 risk matrix. The results indicate that 8% of the variables fall into the high-risk category, 40% into the medium-risk category, and 52% into the low-risk category. High risks are primarily associated with structural work activities and field operations that have the potential to cause serious accidents. The contribution of this study lies in the presentation of measurable and applicable OHS risk mapping, along with risk-level-based control recommendations, which can serve as a practical reference for project managers in improving the effectiveness of OHS management system implementation in sustainable building construction projects.
Pengaruh Sedimentasi Terhadap Kapasitas Aliran Sungai Menggunakan Metode Frijlink Dan Pemodelan HEC-RAS Parta Wijaya; Sartika Nisumanti; Ratih Baniva
Jurnal Konstruksi Vol 24 No 1 (2026): Jurnal Konstruksi
Publisher : Institut Teknologi Garut

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33364/konstruksi/v.24-1.3173

Abstract

Sedimentation is one of the main factors affecting the hydraulic capacity and performance of urban rivers. This study aims to analyze flow capacity and the impact of sedimentation on a river’s ability to convey flow optimally. Flow capacity analysis was conducted using the Frijlink method with a rectangular channel cross-section approach, while sediment distribution and accumulation were analyzed through hydraulic modeling using HEC-RAS software. The analysis results show that the river’s flow capacity is 3,381 m3/s. An evaluation of bed sedimentation indicates that observation point 3 has the highest sedimentation rate, with a sediment discharge of 2.85 × 10-8 m3/s/m and a sedimentation volume of 5.78 × 10-4 m3/s. The HEC-RAS modeling results show that the river’s capacity is unable to accommodate the flow rate optimally under high rainfall conditions, thus potentially causing local flooding or waterlogging.
Mendeteksi Kemacetan Jalan di DIY dengan Mengkaji Kapasitas dan Kinerja Ruas Jalan Menggunakan PKJI 2023 Heriadi Heriadi; Ninik Ariyani; Hendrik Pratama Bezawato Hia; Aprilia Priskila Pigome; Nikolas Indra Wijaya; Yolan Benediktus Halawa
Jurnal Konstruksi Vol 24 No 1 (2026): Jurnal Konstruksi
Publisher : Institut Teknologi Garut

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33364/konstruksi/v.24-1.3181

Abstract

The average motor vehicle density per kilometer in DIY falls into the high-density category, indicating a high potential for traffic congestion in DIY. This study aims to detect road congestion in DIY by analyzing the capacity and performance of road sections using the 2023 Indonesian Road Capacity Index (PKJI). The analysis results indicate two road sections with a high potential for congestion: the Jogja-Solo Road and the Besi Jangkang Road. The road with the highest capacity is the Janti Road, while the one with the lowest capacity is the Pakem-Prambanan Road. A saturation level > 0.85 occurs on the Jogja-Solo and Besi Jangkang roads. This study contributes to the development of transportation studies in DIY and the application of the 2023 PKJI in identifying road sections with a high potential for congestion, thereby serving as a basis for more effective transportation planning and management. The contribution of this study is to provide important information for improving transportation efficiency and safety in DIY.
Optimalisasi Penjadwalan Proyek Menggunakan Metode Time-Cost Trade Off Tio Boanmora Nabasa Rajagukguk; Lila Ayu Ratna Winanda; Munasih; Sriliani Surbakti
Jurnal Konstruksi Vol 24 No 1 (2026): Jurnal Konstruksi
Publisher : Institut Teknologi Garut

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33364/konstruksi/v.24-1.3205

Abstract

Accelerating the duration of construction projects has the potential to increase costs, so an analytical approach is needed to balance time and costs efficiently. This study analyzes the application of the Time–Cost Trade Off (TCTO) method in project scheduling optimization by evaluating the relationship between time acceleration and total cost changes. The study uses data on normal duration and accelerated duration, direct costs, and additional costs due to overtime. The analysis methods include the Critical Path Method (CPM) to identify critical activities and TCTO-based crashing analysis to determine economical acceleration alternatives. The results show that the normal project duration is 151 days with a total cost of IDR 1,634,386,623.07. The application of 2 hours of overtime resulted in a duration of 131 days with a total cost of IDR 1,811,132,883.32, while 3 hours of overtime reduced the duration to 123 days with a total cost of IDR 1,817,213,981.61. These findings indicate that accelerating the project duration has an impact on increasing costs, so the selection of an acceleration scenario needs to consider the trade-off between time reduction and additional costs as the basis for project scheduling decisions.
Pengaruh Penambahan Serbuk Kayu Dan Bestmittel Pada Campuran Beton Terhadap Workability Dan Kuat Tekan Senni Fatriani; Fathoni Usman; Debby Sinta Devi
Jurnal Konstruksi Vol 24 No 1 (2026): Jurnal Konstruksi
Publisher : Institut Teknologi Garut

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33364/konstruksi/v.24-1.3257

Abstract

Concrete is a composite material widely used due to its high compressive strength and resistance to structural loads. Environmentally friendly concrete innovation can be achieved through the utilization of waste materials, such as sawdust, along with the addition of chemical admixtures to improve performance. This study aims to analyze the effect of sawdust treated through water immersion and oven drying, as well as the addition of Bestmittel admixture, on the workability and compressive strength of concrete. The sawdust variations used were 1 percent, 3 percent, and 5 percent of the cement weight, while Bestmittel was added at 0.5 percent. The research method employed an experimental laboratory approach involving slump tests, absorption tests, and compressive strength tests at 28 days. The results indicate that the variation containing 3 percent oven-dried sawdust provided the optimum performance in terms of both workability and compressive strength. The addition of sawdust above 3 percent tended to reduce compressive strength due to increased porosity. Therefore, the use of sawdust together with Bestmittel in appropriate proportions can improve concrete quality while simultaneously supporting sustainable waste management.
Biostabilisasi Tanah Lempung Ekspansif Berbasis Bakteri Bacillus subtilis Tri M W Sir; Kanisius A. Klau; Jhon H. Frans; Wilhelmus Bunganaen; Ike S. F. Muktiawati
Jurnal Konstruksi Vol 24 No 1 (2026): Jurnal Konstruksi
Publisher : Institut Teknologi Garut

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33364/konstruksi/v.24-1.3280

Abstract

Lempung Bobonaro merupakan lempung ekspansif yang tersebar di sepanjang pulau Timor, Propinsi Nusa Tenggara Timur (NTT). Lempung ini menjadi persoalan bagi konstruksi karena daya dukungnya yang rendah dan kompresibiltasnya yang sangat tinggi. Karena itu diperlukan perbaikan karakteristik baik fisik maupun mekanis. Salah satu perbaikan yang disarankan adalah biostabilisasi berbasis bakteri. Penelitian ini bertujuan untuk mengetahui pengaruh biostabilisasi lempung berbasis bakteri Bacillus subtilis terhadap sifat fisik dan mekanis tanah lempung ekspansif. Metode yang digunakan berupa analisis deskriptif berdasarkan hasil pengujian laboratorium untuk tanah lempung asli berupa uji fisik dan mekanis serta untuk tanah lempung yang dibiostabilisasi diberi pengujian mekanis yaitu uji geser langsung dengan jumlah larutan bakteri yang diberikan sebesar 6% terhadap berat kering tanah Hasil yang diperoleh menunjukkan adanya perubahan positif berupa peningkatan parameter kekuatan geser tanah pada yaitu kohesi untuk pemeraman 14 dan 28 hari secara berturut-turut sebesar 30,53% dan 34,74%  terhadap tanah asli. Untuk sudut geser dalam untuk pemeraman 14 dan 28 hari juga mengalami peningkatan berturut-turut 27,22% dan 45,43% terhadap tanah asli.Dengan demikian biostabilisasi sangat menjanjikan sebagai bahan stabilisasi tanah lempung ekspansif.
Analisis Kerusakan Jalan Pada Ruas Jalan Pandeglang – Rangkasbitung dengan Metode Pavement Condition Index (PCI) beserta Biaya Penangananya Bisma Arby Pamungkas; Muhammad Oka Mahendra
Jurnal Konstruksi Vol 24 No 1 (2026): Jurnal Konstruksi
Publisher : Institut Teknologi Garut

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33364/konstruksi/v.24-1.3307

Abstract

The Pandeglang–Rangkasbitung road section plays a strategic role in supporting regional mobility and economic activity. Increased traffic volume and excessive vehicle loads have the potential to degrade pavement performance, making a condition assessment necessary. This study aims to analyze the level of flexible pavement damage using the Pavement Condition Index (PCI) method and to estimate the cost of repairs. The survey was conducted through visual inspection to obtain primary data on the type, severity, and extent of damage, as well as secondary data related to road conditions and maintenance standards. The results show that the PCI value falls into the “very good” category, with damage rates of 84.3349% for patches, 97.9379% for block cracks, 99.2401% for edge cracks, 99.4570% for potholes, 99.9837% for joint cracks, and 98.7598% for longitudinal and transverse cracks. This indicates that the damage is functional in nature. The dominant types of damage include patches, potholes, block cracks, edge cracks, and longitudinal and transverse cracks. Based on the evaluation, the recommended course of action is routine and periodic maintenance with estimated costs of Rp1,392,200,000 and Rp9,725,700,000, respectively. These findings confirm the effectiveness of the PCI method as a basis for efficient and sustainable road maintenance planning.
Evaluasi Implementasi Sistem Keselamatan dan Perlindungan Sosial pada Proyek Gedung Bertingkat InaTEWS BMKG Nurokhman; Hery Kristiyanto; Mochmad Arif Budiyanto
Jurnal Konstruksi Vol 24 No 1 (2026): Jurnal Konstruksi
Publisher : Institut Teknologi Garut

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33364/konstruksi/v.24-1.3314

Abstract

The construction of the InaTEWS Operational System Development Buildings in Jakarta and Bali, funded by the International Bank for Reconstruction and Development (IBRD), has a high level of occupational safety risk due to the complexity of the work and the characteristics of multi-storey buildings. Therefore, the implementation of Occupational Health and Safety (OHS), grievance mechanisms, and the prevention of Gender-Based Violence (GBV), child exploitation, and Sexual Exploitation and Abuse (SEA) are important aspects in ensuring the smoothness and sustainability of the project. This study aims to analyze the implementation of OHS, grievance mechanisms, and the prevention of GBV and SEA in the InaTEWS Building construction project. The research method uses a descriptive qualitative approach with a case study through field observations, interviews, questionnaires, and documentation studies. The analysis was carried out by comparing the research findings with the Construction Safety Management System (SMKK) standards based on Government Regulation Number 50 of 2012 and the World Bank’s social protection framework. The results show that the allocation of construction safety costs amounting to 3.60 percent of the project value supports the optimal implementation of OHS. Evaluation of five main elements comprising 82 assessment parameters showed a compliance level of 100 percent, placing it in the satisfactory category. In addition, the grievance mechanism and the prevention of GBV and SEA have been implemented effectively, with no violations found during the research period, and have contributed significantly to achieving the zero-accident commitment, reflecting the effectiveness of the project management system in multi-storey building construction.
Evaluasi Kerusakan Perkerasan Lentur Menggunakan Metode Bina Marga : Studi Kasus Jalan Towua Di Kota Palu Km 0 + 000 - Km 1 + 000 Afrinaldy Andara; Muh. Ryan Pratama; Ainun Jariah Hilal Anshary; Andi Subhan Nur
Jurnal Konstruksi Vol 24 No 1 (2026): Jurnal Konstruksi
Publisher : Institut Teknologi Garut

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33364/konstruksi/v.24-1.3327

Abstract

Initial survey results on Towua Road (Sta. Km 0+000–Km 1+000) indicate that the flexible pavement has experienced various forms of damage, including surface layer stripping, aggregate loss, split damage, and cracking. These conditions not only reduce driving comfort but also have the potential to compromise road user safety if not handled properly. This study aims to evaluate the types and levels of flexible pavement damage, determine the priority value for damage handling based on the Bina Marga method, and identify the factors causing the damage as a basis for formulating maintenance recommendations for Towua Road. The research method was conducted through a visual field survey on observation segments according to stationing (Sta.), after which the damage data were analyzed using the Bina Marga assessment procedure to obtain the percentage of pavement damage and the Priority Order (PO) for maintenance handling. Based on the analysis results, the total percentage of pavement damage was recorded at 45.84 percent, equivalent to 4,125.88 m² of the total observed road area. The obtained priority value was PO = 3, indicating that the road condition is classified as severely damaged and therefore requires pavement improvement treatment. Accordingly, the recommended action for Towua Road is overlay resurfacing (additional pavement layer) to restore road service performance and improve user comfort and safety.

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