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Eko Walujodjati
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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 301 Documents
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Desain Dinding Penahan Tanah pada Lereng Tidak Stabil Berbasis Analisis Numerik Athaya Zhafirah; Rudy Febrijanto; Arby Muhyi Munawar
Jurnal Konstruksi Vol 23 No 2 (2025): Jurnal Konstruksi
Publisher : Institut Teknologi Garut

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33364/konstruksi/v.23-2.2853

Abstract

A landslide occurred in Pananjung Village, Pamulihan District, Garut Regency, blocking the main road access in January 2024. The primary causes of slope instability were steep terrain and poor soil conditions. This study aims to analyze slope stability in the landslide area using a cantilever-type retaining wall as reinforcement. The study site is located in Pananjung Village, Pamulihan District, Garut Regency. The Bishop method was employed in the slope stability analysis, based on laboratory test results of the soil’s physical and mechanical properties. The tested parameters included water content, specific gravity, grain size distribution, and direct shear strength. The analysis was conducted both manually and using GeoStudio and Plaxis 2D software. The results indicate that the safety factor (FK) of the natural slope was below the safe threshold (FK < 1.5). After reinforcement with a retaining wall, the FK value increased beyond the safety limit, indicating a stable slope condition. The retaining wall design was developed based on an analysis of acting forces, considering stability against sliding, overturning, and bearing capacity. This study provides a practical contribution to landslide mitigation through a geotechnical approach based on numerical analysis. The findings can also serve as a technical reference for landslide risk mitigation in disaster-prone areas, offering a technical foundation for slope stabilization through the design of retaining walls grounded in numerical analysis.
Pengaruh Karakteristik Lalu Lintas terhadap Kondisi Perkerasan Jalan Menggunakan IRI dan SDI Subhan Mulyana; Eko Walujodjati; Salma Fauzyah
Jurnal Konstruksi Vol 23 No 2 (2025): Jurnal Konstruksi
Publisher : Institut Teknologi Garut

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33364/konstruksi/v.23-2.2871

Abstract

Population growth and increased economic activity have led to higher traffic volumes on roads, including on Jalan Limbangan–Leuwigoong in Garut Regency. This condition puts excessive pressure on flexible pavements, causing damage, reducing driving comfort, and increasing maintenance costs. This study aims to analyze the effect of vehicle volume and speed on road conditions using the International Roughness Index (IRI) and Surface Distress Index (SDI) indicators. Data were collected through traffic surveys, speed measurements, the RoadLab Pro application for IRI, and visual surveys based on Bina Marga guidelines for SDI. Simple linear regression analysis was used after classical assumption tests were not met in multiple regression. The results showed that vehicle volume and speed did not significantly affect IRI. Conversely, both had a significant effect on SDI, with a strong relationship: volume (R = 0.740; R² = 54.8%) and speed (R = 0.759; R² = 57.5%). This study confirms that traffic characteristics have a greater effect on road surface damage (SDI) than road roughness (IRI).
Studi Perbandingan Perilaku Struktur Gedung Bertingkat Tahan Gempa Menggunakan Material Beton Bertulang Dan Baja Muhammad Andi Arif; Pio Ranap Tua Naibaho
Jurnal Konstruksi Vol 23 No 2 (2025): Jurnal Konstruksi
Publisher : Institut Teknologi Garut

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33364/konstruksi/v.23-2.2885

Abstract

The construction of high-rise buildings is influenced by land limitations and advances in construction technology. However, these structures present more complex technical risks, particularly in earthquake-prone regions such as Indonesia. Earthquake-resistant structural design serves as a preventive approach to minimize potential casualties and post-disaster losses, rather than to create completely earthquake-proof buildings. Concrete and steel are commonly used structural materials in high-rise buildings due to their high strength, but their selection also considers various other parameters beyond strength alone. This study analyzes the comparative seismic performance of high-rise building models using steel and reinforced concrete materials. The analysis focuses on base shear force, inter-story drift response, and the impact of P-Delta effects using the response spectrum method in ETABS v.21 software. The results show that the total base shear force (Vtotal) in the Reinforced Concrete Structure (RCS) model is 28,979.31 kN, while in the Steel Structure (SS) model it is 8,133.61 kN. The higher value in the RCS model is due to its greater structural weight and shorter structural period. Both models meet the allowable inter-story drift limits, with the RCS model showing smaller displacements: 50.001 mm (X direction, 10th floor) and 41.058 mm (Y direction, 9th floor), compared to the SS model’s 50.930 mm (X direction, 8th floor) and 40.700 mm (Y direction, 7th floor). Furthermore, the P-Delta effect in both models remains within safe limits; however, the RCS model exhibits smaller maximum values of 0.0220 and 0.0185 compared to the SS model’s 0.0649 and 0.0530, indicating better seismic stability in the reinforced concrete structure.
Pemetaan Kerusakan Jalan Menggunakan Metode Pavement Condition Index dan Metode Bina Marga Subhan Mulyana; Athaya Zhafirah; Isne Nabila Permata Sari
Jurnal Konstruksi Vol 23 No 2 (2025): Jurnal Konstruksi
Publisher : Institut Teknologi Garut

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33364/konstruksi/v.23-2.2891

Abstract

Kamojang Garut Highway is a district road that serves as an alternative route between Bandung and Garut, passing through tourist and industrial areas. This road has suffered various types of damage, such as cracks, potholes, and deformation, which have reduced service quality and disrupted the socio-economic activities of the community. This study evaluates the condition of the road from STA 0+000 to STA 8+300 using the Pavement Condition Index (PCI) and Bina Marga methods. The PCI method involves a field survey to identify the type, severity, and extent of damage, then calculates the pavement condition index. The Bina Marga method assesses damage based on the road condition classification from the Directorate General of Highways. The results show an average PCI value of 43.37%, with a “fair” road surface condition that requires overlay. Based on Bina Marga, a damage score of 11 results in a condition value of 4, indicating priority for periodic maintenance. Mapping based on the Geographic Information System (GIS) using QGIS illustrates the spatial distribution of damage in detail, facilitating the identification of priority locations. This combination of methods provides a comprehensive, detailed, and applicable evaluation. The results of this study are expected to serve as a reference for local governments for more effective, efficient, and sustainable road repairs.
Analisis Kinerja Biaya dan Waktu dengan Metoda Earned Value serta Percepatan Sisa Pekerjaan Proyek Jembatan dengan Metoda Crashing Irfan Achmad Taufik; Anton Soekiman; Chandra Afriade Siregar
Jurnal Konstruksi Vol 23 No 2 (2025): Jurnal Konstruksi
Publisher : Institut Teknologi Garut

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33364/konstruksi/v.23-2.2904

Abstract

This study analyzes the cost and time performance of the Sequoia Hills Bridge project in Bogor City using the Earned Value and Crashing methods. The EVM analysis results in week 8 show that time performance is slightly behind schedule (SV -1.17%) but cost performance is more economical (CV 0.17%). Overall, the project shows efficiency with an SPI of 1.30 and a CPI of 1.02, projecting completion 35 days ahead of schedule (EAS 175 days) and cost savings of IDR 40.5 million from the RAB. To meet the project owner's request for acceleration, a Crashing simulation was conducted on the remaining work with various overtime scenarios. The best scenario is adding 4 hours of overtime to critical work, resulting in an optimal duration of 165 days, which is faster than the initial remaining duration of 171 days. This study provides a reference for contractors in monitoring project performance and determining efficient and economical acceleration strategies.
Analisis Kuat Tekan Beton Dengan Variasi Pecahan Genteng Sebagai Agregat Kasar Dan Abu Sekam Padi Sebagai Agregat Halus Gusti Yawan; Yudi Setio Prabowo; Muhammad Oka Mahendra
Jurnal Konstruksi Vol 23 No 2 (2025): Jurnal Konstruksi
Publisher : Institut Teknologi Garut

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33364/konstruksi/v.23-2.2918

Abstract

Analysis of Concrete Compressive Strength with Variations in Roof Tile Fragments as Coarse Aggregate and Rice Husk Ash as Fine Aggregate Concrete is a widely used construction material due to its compressive strength and availability of raw materials. However, the limited availability of natural aggregates has led to the use of alternative materials from waste. This study aims to analyze the effect of using broken tiles as a substitute for coarse aggregate and rice husk ash as a substitute for fine aggregate on the compressive strength of K-175 grade concrete. The mixture variations used included normal concrete, concrete with 7% broken tiles and 1.5% rice husk ash, and concrete with 9% broken tiles and 3% rice husk ash. The test specimens, which were 15×15×15 cm cubes, were tested for compressive strength at 7 and 21 days of age in accordance with SNI standards. The test results showed that the use of tile fragments and rice husk ash tended to reduce the compressive strength of concrete compared to normal concrete. At 7 days, normal concrete had an average compressive strength of 9.5 MPa, while the mixture of 7% broken tiles + 1.5% rice husk ash decreased to 6.6 MPa, and the mixture of 9% broken tiles + 3% rice husk ash decreased to 6.0 MPa. At 21 days, the compressive strength of normal concrete reached 12.4 MPa, while the 7% + 1.5% mixture was only 10.7 MPa, and the 9% + 3% mixture was 8.4 MPa. Thus, the higher the percentage of waste substitution used, the greater the decrease in concrete compressive strength.
Pemilihan Moda Transportasi Buton Utara–Kendari Menggunakan Metode Simple Additive Weighting La Ode Ashari Sani; Romy Suryaningrat Edwin; Nurrakhmad Arsyad
Jurnal Konstruksi Vol 23 No 2 (2025): Jurnal Konstruksi
Publisher : Institut Teknologi Garut

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33364/konstruksi/v.23-2.3008

Abstract

This study analyzes transportation mode selection preferences on the strategic Buton Utara–Kendari route, which plays a vital role in inter-island connectivity. The research employs the Simple Additive Weighting (SAW) method for a quantitative descriptive analysis based on five service criteria: cost, travel time, convenience, comfort, and safety. Primary data were collected from 80 respondents distributed across four transportation modes: motorcycle, private car, Damri bus, and Wanci ship. The analysis results identify the private car as the most optimal transportation mode, with the highest preference score (V = 95.62). This superiority is primarily driven by excellent performance in comfort and safety criteria, both achieving perfect normalization scores (1.00). The findings confirm that service quality (benefit criteria) is the determining factor in decision-making, outweighing considerations of cost and time. Sensitivity testing reinforces the model’s validity, showing high stability—where the private car remains the top choice (V = 88.65) even under extreme parameter variations—while secondary modes display volatility when cost factors change. The study concludes that investment in improving service quality strategically shapes user preferences. The recommended policy implication is that the government should reorient transportation policies for archipelagic regions by developing integrated and adaptive services, emphasizing service quality improvement rather than merely focusing on cost efficiency.
Pengaruh Penambahan Kotoran Ayam terhadap Kuat Tekan Beton Tubagus ilham pratama; Yudi Setyo Prabowo; Muhammad Oka Mahendra
Jurnal Konstruksi Vol 23 No 2 (2025): Jurnal Konstruksi
Publisher : Institut Teknologi Garut

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33364/konstruksi/v.23-2.3009

Abstract

Concrete is a primary construction material widely used for its high strength and durability. However, the production of cement—the main component of concrete—contributes significantly to carbon dioxide (CO2) emissions, resulting in considerable environmental impact. Efforts to develop environmentally friendly concrete materials have been made by utilizing organic waste as an additive, one of which is chicken manure. This study aims to determine the effect of adding chicken manure on the compressive strength of normal concrete. The research was conducted experimentally in the Civil Engineering Laboratory of Universitas Serang Raya using cube specimens measuring 15 × 15 cm. The concrete mix consisted of Portland cement, fine aggregate, coarse aggregate, clean water, and dried chicken manure with addition variations of 0%, 1.5%, and 3% by weight of cement. Tests were performed on concrete specimens at the ages of 3 and 7 days using a compression testing machine. The results showed that the compressive strength values at 3 days were 11.05 MPa (0%), 12.95 MPa (1.5%), and 10.15 MPa (3%), while at 7 days they were 14.15 MPa (0%), 15.05 MPa (1.5%), and 13.2 MPa (3%). The slump value decreased as the proportion of chicken manure increased—from 110 mm in the control mix to 90 mm in the 3% mix. This indicates that higher percentages of chicken manure reduce the concrete’s workability, and compressive strength tends to decrease beyond the optimum limit. The best performance was observed with a 1.5% addition, which still met the compressive strength requirement for K-225 grade concrete, suitable for non-structural applications. Overall, incorporating chicken manure into concrete mixtures has the potential to reduce organic waste and promote the development of more environmentally friendly construction materials without significantly compromising concrete performance.
Analisis Indeks Fungsi Saluran Dan Bangunan Irigasi Sugihan Kiri Menggunakan Pendekatan Indeks Kondisi pada Daerah Irigasi Rawa Ratih Baniva; Andre Wibowo
Jurnal Konstruksi Vol 23 No 2 (2025): Jurnal Konstruksi
Publisher : Institut Teknologi Garut

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33364/konstruksi/v.23-2.3022

Abstract

The Sugihan Kiri Tidal Irrigation Area (DIR) is one of the key irrigation regions in Muara Sugihan District, playing a strategic role in supporting agricultural productivity. However, damage to irrigation canals and structures can hinder water distribution and reduce the efficiency of irrigation network management. This study aims to obtain the function index of the canals and irrigation structures in the Sugihan Kiri tidal area as a basis for maintenance recommendations. The research was conducted through field surveys (walkthroughs) involving irrigation asset inventory, measurement of canal and structure damage, and documentation of existing conditions. The data were analyzed using a condition index approach to determine the functional level of canals and structures, followed by identifying appropriate treatment measures. The results show that the canal function index of DIR Sugihan Kiri is 60.18%. Of the 15 primary canals, 6 require routine maintenance, 5 require periodic maintenance, and 4 require rehabilitation. For the 248 secondary canals, 72 require routine maintenance, 86 require periodic maintenance, and 90 require rehabilitation. The function index of irrigation structures in DIR Sugihan Kiri reaches 62.39%, with 93 structures recommended for periodic maintenance and 8 structures requiring rehabilitation.
Pengaruh Penambahan Serbuk Kulit Telur Terhadap Percepatan Waktu Kering Beton dan Kuat Tekan Pada Beton K-175 Fiqi Abdul Rohman; Yudi Setio Prabowo
Jurnal Konstruksi Vol 23 No 2 (2025): Jurnal Konstruksi
Publisher : Institut Teknologi Garut

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33364/konstruksi/v.23-2.3033

Abstract

Penelitian ini bertujuan untuk menganalisis pengaruh penambahan Serbuk Kulit Telur (SKT) terhadap percepatan waktu kering dan kuat tekan beton pada umur 3 dan 7 hari. SKT digunakan sebagai bahan tambah karena kandungan kalsium karbonat (CaCO3) yang berpotensi mempercepat proses hidrasi semen. Penelitian dilakukan melalui metode eksperimental di laboratorium dengan variasi SKT sebesar 0%, 0,5%, 3%, dan 5% terhadap berat semen. Pengujian meliputi slump test, penurunan berat beton harian sebagai indikator percepatan waktu kering, serta kuat tekan menggunakan benda uji kubus berukuran 15 × 15 × 15 cm. Hasil penelitian menunjukkan bahwa penambahan SKT mempercepat proses pengeringan pada beton K-175, ditandai dengan penurunan berat yang lebih besar dibandingkan beton normal, dengan percepatan tertinggi pada variasi 5% mengalami penurunan berat total sebesar 2,19% pada umur 7 hari. Sedangkan, untuk kuat tekan nilai optimal diperoleh pada variasi 0,5% dengan rata-rata nilai 5,95 Mpa  pada umur 3 hari dan variasi 3% dengan rata-rata nilai 6,15 Mpa pada umur 7 hari. Penambahan 5% SKT cenderung menurunkan kuat tekan akibat peningkatan porositas beton. Dengan demikian, kadar optimal SKT berada pada rentang 0,5%–3% karena mampu mempercepat waktu kering tanpa menurunkan mutu beton K-175 secara signifikan. Oleh karena itu, penggunaan SKT berpotensi menjadi alternatif bahan tambahan ramah lingkungan untuk mempercepat proses pengeringan beton.

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