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RACIC : Rab Construction Research
Published by Universitas Abdurrab
ISSN : 25277073     EISSN : 26203170     DOI : https://doi.org/10.36341/racic
Core Subject : Engineering,
Civil Engineering, Building, Construction & Architecture
RACIC "Rab Construction Research" (ISSN 2527-7073) adalah Jurnal yang dikelola oleh Program Studi Teknik Sipil, Fakultas Teknik Universitas Abdurrab, yang terbit secara berkala dalam dua edisi per tahun.
Arjuna Subject : -
Articles 314 Documents
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PERENCANAAN GEOMETRIK JALUR GANDA KERETA API LINTAS STASIUN ARJASA HINGGA STASIUN KALISAT (KM. 203 + 170 -KM. 214 + 200) Syafira Salsabilla; Nugroho Utomo; Aulia Dewi Fatikasari
Racic : Rab Construction Research Vol. 11 No. 1 (2026): JUNI
Publisher : LPPM Universitas Abdurrab

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36341/racic.v11i1.6708

Abstract

Indonesia, as a country with vast territory and a continuously growing population, faces significant challenges in providing adequate transportation infrastructure. Railways have become one of the most preferred modes of transportation among the public, making the improvement of railway line capacity an urgent necessity particularly along the southern Surabaya–Banyuwangi corridor, which has not yet been fully developed into a double track. One such segment is the line from Arjasa Station to Kalisat Station. On this segment, train frequency remains limited due to the single-track configuration, which impacts various sectors. This study focuses on the Arjasa–Kalisat segment, which includes three stations: Arjasa, Kotok, and Kalisat. The objective of this research is to evaluate the line’s transport capacity and geometric track design as part of the efforts to develop a double-track railway. The analysis shows that the transport capacity of the segment reaches 3,983,126 tons per year and is classified as a Class IV railway. This segment uses R.54 type rails with a gauge of 1,067 mm, comprising 13 horizontal curves with radii ranging from 270 to 850 meters, and 23 vertical curves with a radius of 6,000 meters. These findings provide a crucial foundation for planning future railway infrastructure improvements to support smooth mobility and regional economic growth.
ANALISIS STABILITAS DINDING PENAHAN TANAH TIPE KANTILEVER PADA ABUTMENT JEMBATAN TERHADAP MUKA AIR BANJIR Jovanda Anggie Hirza Rivansyah; Dian Purnamawati Solin; Bagas Aryaseta
Racic : Rab Construction Research Vol. 11 No. 1 (2026): JUNI
Publisher : LPPM Universitas Abdurrab

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36341/racic.v11i1.6730

Abstract

Retaining walls play a crucial role in road and bridge infrastructure by resisting lateral earth pressure and preventing slope failure or damage caused by rising river water levels. This study compares the stability of gabion-type and cantilever-type retaining walls through manual calculations and numerical simulation using Geo5 software. The analysis focused on overturning, sliding, bearing capacity, and slope stability under both normal and flood water level (MAB) conditions. Manual calculations indicated that both wall types satisfied stability requirements with safety factors of 0.96–2.07 for overturning, 2.01–3.53 for sliding, and 6.89–6.92 for bearing capacity. However, Geo5 analysis showed that gabion walls were only safe in terms of overturning (6.70–7.50) and sliding (2.12–2.30), while bearing capacity (0.57–0.80 < 3.0–3.5) and slope stability (1.33–1.37 < 1.5) did not meet the required standards. In contrast, cantilever walls proved safe across all parameters, with safety factors of 7.25–9.87 for overturning, 2.09–2.48 for sliding, 3.14–4.90 for bearing capacity, and 1.52–1.69 for slope stability. Therefore, reinforced concrete cantilever retaining walls are more suitable as an effective and reliable alternative to gabion walls, particularly in flood-prone and landslide-prone areas.
EVALUASI KAPASITAS DAYA DUKUNG AKSIAL DAN LATERAL HELICAL PILE MENGGUNAKAN METODE EMPISRIS DAN ANALISIS BATAS TERADAP HASIL PENGUJIAN AKSIAL DAN LATERAL DI LAPANGAN Farian Albajili; Muhamad Yusa; Ferry Fatnanta
Racic : Rab Construction Research Vol. 11 No. 1 (2026): JUNI
Publisher : LPPM Universitas Abdurrab

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36341/racic.v11i1.6744

Abstract

The construction of deep foundations in operational industrial facilities faces challenges due to the presence of existing buildings and active machinery. Helical piles offer a stable, environmentally friendly, and vibration-free solution that is safe for surrounding structures. This study compares the results of empirical methods and limit analysis in the design of helical piles with field test results of axial loads. The research began with the collection and correction of Standard Penetration Test (SPT) data to a depth of 15 m to determine soil technical parameters. Based on these data, helical pile models with various design configurations were analyzed using empirical methods, limit analysis, and field testing. The results indicate that limit analysis provides axial load capacities that are closer to field test results compared to other empirical methods. The highest capacity was obtained for pile type D1-H1-S1-M piles, which have larger helix and shaft diameters, while differences in test locations meant that pile type D2-H2-S3-SH piles could not be directly compared to the others
PERENCANAAN BUS BANDARA PADA BANDAR UDARA DHOHO KEDIRI JAWA TIMUR Salman Rasendriya; Nugroho Utomo; Fithri Estikhamah
Racic : Rab Construction Research Vol. 11 No. 1 (2026): JUNI
Publisher : LPPM Universitas Abdurrab

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36341/racic.v11i1.6806

Abstract

Dhoho Airport in Kediri serves as a vital air transportation infrastructure supporting regional mobility. However, no intermodal transport service currently connects Tamanan Terminal to the airport. This study aims to design an airport shuttle bus system that provides an effective and efficient linkage. Data were collected through interviews and questionnaires using the stated preference method, focusing on service effectiveness attributes. The planning analysis refers to the Technical Guidelines of the Directorate General of Land Transportation No. SK.687/AJ.206/DRJD/2002. The proposed mode of transport is the E-Inobus electric bus with a capacity of 24 passengers. The analysis results indicate 15 designated stops along the route, with a total circulation time of 73 minutes. The load factor is estimated at 25%, with an average headway of 13 minutes. A total of bus 20 unitsare required, operating at a frequency of 2 vehicles per hour. The average passenger waiting time is 13 minutes, and the operating speed is set at 30 km/h. This planning is expected to provide an integrated intermodal transport service that enhances accessibility and travel efficiency to and from Dhoho Airport.  
STABILISASI TANAH LEMPUNG DENGAN SEMEN SEBAGAI STABILISATOR TERHADAP KUAT GESER TANAH PADA SUBGRADE Muthia Anggraini; Virgo Trisep Haris; Sri Wahyuni
Racic : Rab Construction Research Vol. 10 No. 2 (2025): DESEMBER
Publisher : LPPM Universitas Abdurrab

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36341/racic.v10i2.6890

Abstract

Clay soil is categorized as problematic soil because it has high water content, which causes the soil's shear strength to decrease during rainfall, resulting in low soil bearing capacity. This condition causes damage to structures built on top of it. Soil stabilization is one aspect of soil improvement. Proper soil improvement is necessary to assess soil performance to meet post-construction stability requirements. Chemical stabilization using cementitious materials can improve the engineering properties of expansive soils. The purpose of this study is to analyze the shear strength of cement-stabilized clay soil. Expansive soil is stabilized with cement at variations of 10, 12, 14, and 16% cement by weight. The method used was laboratory testing, consisting of three types of tests: physical soil testing to obtain soil classification, compaction testing to obtain optimum moisture content, and direct shear testing to obtain shear strength values. All tests used Indonesian National Standard (SNI) procedures. The results showed that adding varying amounts of cement resulted in an increase in shear stress values. The maximum value occurred in clay soil stabilized with 14% cement.
EVALUASI PERAN RUANG TERBUKA HIJAU DALAM MITIGASI EMISI KARBON DIOKSIDA TRANSPORTASI DI SIDOARJO Nursinta Abadiyah; Okik Hendriyanto Cahyonugroho
Racic : Rab Construction Research Vol. 11 No. 1 (2026): JUNI
Publisher : LPPM Universitas Abdurrab

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36341/racic.v11i1.6892

Abstract

Urban Green Infrastructure serves a critical function in spatial planning and emission mitigation in cities. This study aims to evaluate UGI located in the city center and the suburban area of Sidoarjo. The research was conducted using traffic counting along the roads adjacent to both parks and tree inventory, including species identification, diameter at breast height (DBH), crown width, tree height, and tree condition. Data analysis employed the IPCC Tier 2 approach, i-Tree Eco, and NDVI processed with ArcGIS. The results indicate that carbon dioxide emissions from motor vehicles were higher at Apkasi Park, located in the suburban area, compared to Abhirama Park, located in the city center. Conversely, CO₂ sequestration capacity showed the opposite trend: Apkasi Park contained 70 trees with a sequestration capacity of 0.39 kg/hour, while Abhirama Park had 159 trees with a sequestration capacity of 0.90 kg/hour. This demonstrates a relatively small percentage of sequestration compared to the emissions produced. NDVI analysis further revealed that Apkasi Park still has sufficient space for additional tree planting, whereas Abhirama Park has already reached a relatively high vegetation density.
PEMANFAATAN RECYCLED CONCRETE WASTE SEBAGAI ALTERNATIF BAHAN STABILISASI TANAH LEMPUNG UNTUK PENINGKATAN NILAI CALIFORNIA BEARING RATIO (CBR) Fitridawati Soehardi; Marta Dinata; Hendri Rahmat; Marlaily Idris; Junaidi Junaidi
Racic : Rab Construction Research Vol. 10 No. 2 (2025): DESEMBER
Publisher : LPPM Universitas Abdurrab

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36341/racic.v10i2.6916

Abstract

Clay soil has low bearing capacity and high plasticity, which requires stabilization efforts to improve its strength. This study aims to analyze the effectiveness of Recycled Concrete Waste (RCW) as an alternative stabilizing material in improving the California Bearing Ratio (CBR) value of clay soil. The research was conducted through a series of laboratory tests, including physical property analysis, Standard Proctor compaction tests, and CBR tests under RCW mixture variations of 0%, 5%, 10%, 15%, and 20%, both in unsoaked and soaked conditions. The results indicate that the Optimum Moisture Content (OMC) increased from 1.65% to 18.1%, while the Maximum Dry Density (MDD) decreased from 19.8 g/cm³ to 17 g/cm³, and slightly increased to 17.5 g/cm³ at 15% RCW content. The CBR value showed a significant improvement, increasing from 4.6% to 15% under unsoaked conditions and from 3.30% to 12.80% after soaking. It can be concluded that the optimum RCW content of 20% effectively enhances the soil’s bearing capacity and water resistance while offering an environmentally friendly solution for subgrade stabilization in road construction
Evaluasi Respons Dinamik Gempa pada Jembatan Rangka Baja Sei Piring Menggunakan Incremental Dynamic Analysis Anwar
Racic : Rab Construction Research Vol. 11 No. 1 (2026): JUNI
Publisher : LPPM Universitas Abdurrab

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36341/racic.v11i1.6942

Abstract

Indonesia is located in the Pacific Ring of Fire region, which causes a very high level of earthquake vulnerability. This makes the evaluation of the seismic performance of bridges as critical infrastructure very important for risk mitigation. This study aims to test the seismic performance of the Sei Piring Steel Truss Bridge, which has a length of 60 m and a width of 9.6 m, using the Incremental Dynamic Analysis (IDA) method based on earthquake recordings scaled from 0.05g to 0.5g and SAP2000 software. The analysis results show high structural integrity against non-seismic loads, where the Moment Capacity of 389.635 kN-m and Shear Capacity of 792.54 kN, substantially exceed the induced Ultimate force. Similarly, the Maximum Deflection of 0.016 m is far below the permissible limit of 0.075 m. However, the seismic vulnerability analysis identified significant functional vulnerabilities, the percentage of Operational level damage was 6.83% in the bridge area with a PGA value of 0.1122g and reached 100% at PGA 0.135g, indicating the potential for rapid service disruption due to moderate earthquakes. The critical point of Life Safety was reached at PGA 0.395g, while total Collapse failure was predicted at PGA 1.135g. Therefore, bridge mitigation priorities should be directed at improving seismic performance to maintain function and ensure user safety at earthquake intensities above 0.395g.
ANALISIS QUANTITY TAKE OFF (QTO) PEKERJAAN STRUKTUR BERBASIS BUILDING INFORMATION MODELLING (BIM) PADA PROYEK KONSTRUKSI X Nofriadi Nofriadi; Eka Juliafad; Harfa Sakri
Racic : Rab Construction Research Vol. 10 No. 2 (2025): DESEMBER
Publisher : LPPM Universitas Abdurrab

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36341/racic.v10i2.6947

Abstract

Traditional QTO calculations are often performed manually based on 2D drawings, which are prone to errors, time-consuming, and difficult to integrate with other project processes. In response to these challenges, Building Information Modeling (BIM) has emerged as a transformative paradigm. BIM is a process that involves creating and managing intelligent 3D digital models of a building. BIM models contain not only geometric information but also rich non-geometric data, including material specifications, quantities, and relationships between elements. The use of BIM in the QTO process, known as 5D BIM, allows for automatic and accurate quantity extraction directly from the 3D model. Construction Project X is a 2-story reinforced concrete building construction project used as an office building. Construction Project X still uses conventional calculations in QTO planning, so researchers are trying to conduct further research related to BIM-based QTO planning in this construction project. The QTO modeling and analysis revealed relatively small differences in concrete elements and larger differences in reinforcement elements. Furthermore, in terms of cost, the BIM BOQ costed 10.26% more than the conventional QTO.
TER TINJAUAN TEKNIS DAN EKONOMIS PENANGANAN PERSIMPANGAN JALAN (STUDI KASUS JL. KAHARUDIN NASUTION – JL. PASIR PUTIH KOTA PEKANBARU) Rafli Arie Pradhana; Ari Sandhyavitri; Muhammad Ikhsan; Leo Sentosa; Muhamad Yusa; Ferry Fatnanta
Racic : Rab Construction Research Vol. 11 No. 1 (2026): JUNI
Publisher : LPPM Universitas Abdurrab

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36341/racic.v11i1.6972

Abstract

Pekanbaru City, as the provincial capital, has experienced significant population growth, resulting in increased mobility and severe traffic congestion, particularly at urban intersections. This study evaluates the performance and feasibility of management alternatives for the problematic Kaharudin Nasution-Pasir Putih intersection. The analysis uses the Indonesian Road Capacity Guidelines (PKJI 2023) for technical performance assessment and the LAPI ITB 1996 method for economic analysis, focusing on Vehicle Operating Costs (VOC), Benefit Cost Ratio (BCR), and Net Present Value (NPV) for the short (5 years), medium (10 years), and long (15 years) terms. The existing condition indicates a poor Level of Service (LOS D) with a Degree of Saturation (DS) of 0.76. Four alternatives were evaluated: Traffic Light Optimization, Road Widening, Adding 1 Lane, and Construction of an Overpass. The results indicate that Alternatives 1, 2, and 3 offer only short- to medium-term improvements. The construction of the Flyover (Alternative 4) is the only feasible long-term solution (15 years), proven to be economically feasible with BCR and NPV values of 1.46 and 55.6 billion rupiah, in the 10th year 3.19 and 270.3 billion rupiah, and in the 15th year 4.79 and 482.3 billion rupiah. which means the benefit value is greater than the costs incurred, so that the construction of the flyover is economically feasible to be implemented to minimize the increasing financial losses due to traffic delays.

Page 28 of 32 | Total Record : 314

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