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Civilla : Jurnal Teknik Sipil Universitas Islam Lamongan
Published by Universitas Islam Lamongan
ISSN : 25032399     EISSN : 26207222     DOI : https://doi.org/10.30736/cvl
Core Subject :
Jurnal Penelitian Teknik Sipil UNISLA (ISSN2503-2399) adalah jurnal ilmiah yang bertujuan untuk mengkomunikasikan hasil dan riset teknologi dalam rangka untuk pengembangan teknologi di bidang teknik sipil. Sasaran pembaca adalah para ilmuwan, akademis, serta praktisi dari bidang teknik sipil sebagai berikut: Rekayasa Struktural, Teknik Geotek, Rekayasa Sumberdaya Hidrolik dan Air, Rekayasa Transportasi, dan Manajemen Konstruksi.
Arjuna Subject : -
Articles 167 Documents
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Handling Of Unsignalized Intersections (Simpang Haji Rais) In South Tangerang City Heris Cahya Kusuma; Tjahjani, AR Indra; Naibaho, Pio Ranap Tua
Civilla : Jurnal Teknik Sipil Universitas Islam Lamongan Vol 10 No 1 (2025): MARET
Publisher : Program Studi Teknik Sipil, Fakultas Teknik, Universitas Islam Lamongan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30736/cvl.v10i1.1336

Abstract

The H. Rais intersection in South Tangerang City is an intersection with three arms without traffic signals. Simpang H. Rais is a meeting of three roads, namely Jl. H. Jamat Gg. Rais, Jl. Puspitek Segment 1, and Jl. Puspitek Segment 2. This intersection often experiences long queues due to inadequate intersection capacity so that it is unable to accommodate the volume of vehicles during morning and evening rush hours. The research method used was a direct survey method at the research location to collect traffic data at Simpang H. Rais and the surrounding roads. From the research results, the average length of the queue before handling during peak hours on weekdays is 168.52 m and delays are 35,471 with a level of service (LOS) D, while the average length of the queue before handling during peak hours on holidays is 119 .82 m and a delay of 33.52 with a level of service (LOS) D. In the next 5 years, the performance of Simpang H. Rais before handling will become worse with the result that the average queue length during weekday peak hours is 219.64 m and a delay of 49,137 with an intersection service level (LOS) E, while the average queue length during holiday peak hours is 218.28 m and a delay of 43,635 with an intersection service level (LOS) E. Handling is being carried out at Simpang H. Rais in short-term scenario 1 is by fulfilling road equipment facilities and assigning traffic officers, and in short-term scenario 2 by widening the bend radius to a minimum of 7.8 m and widening the H. Jamat Gg road section. Rais becomes 6 m, while the treatment carried out at Simpang H. Rais in the long term is to change the Puspitek road type to 4/2-T with a width per direction of 6 m.
Analysis of Potential Hazards and Risks of Work Accidents by Using the HIRARC Method On Earthwork and Geosynthetics Kuncaravita, Sekar Ayu; Apriliani, Rizki Astri; Lawdy D.V, Muhammad; Indri Y, Dayat
Civilla : Jurnal Teknik Sipil Universitas Islam Lamongan Vol 10 No 1 (2025): MARET
Publisher : Program Studi Teknik Sipil, Fakultas Teknik, Universitas Islam Lamongan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30736/cvl.v10i1.1350

Abstract

The world of construction always has potential hazards and risks that always endanger the safety and health of workers. The occurrence of work accidents is an event that is always unexpected and can cause losses, both for the construction company and the workers. This study aims to determine the potential hazards in an effort to reduce work accidents in the Banjarsari- Dukuh Tengah road improvement project in Sidoarjo Regency. The method used in this research is hazard identification risk assessment and risk control (HIRARC). The results showed that in the construction of the Banjarsari- Dukuh Tengah road improvement project in Sidoarjo Regency, especially in earthworks and geosynthetics, there were 10 jobs in the Banjarsari- Dukuh Tengah road improvement project in Sidoarjo Regency showing that the potential hazards were 2 activities classified as having a "low risk," 3 activities with a "medium risk," and 5 other activities with a "high" risk. To overcome these problems, suggestions for improvement are given so that workers carry out work activities in accordance with standard operating procedures (SOPs) and wear personal protective equipment (PPE).
Study of Groin Structure Planning On a River Bend In Padang Mancang Village Muhammad Arrie Rafshanjani amin; SAFRIANI, MEYLIS; Cut Suciatinas Silvia; Delfian Masrura; Safrizal
Civilla : Jurnal Teknik Sipil Universitas Islam Lamongan Vol 10 No 1 (2025): MARET
Publisher : Program Studi Teknik Sipil, Fakultas Teknik, Universitas Islam Lamongan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30736/cvl.v10i1.1352

Abstract

The river flows naturally from its source (upstream) to its mouth (downstream). Due to its velocity, riverbank erosion often occurs, especially in curved sections. In meandering rivers, unstable soil can lead to landslides on the outer banks. One affected area is Padang Mancang Village, Kaway XVI Subdistrict, West Aceh Regency. This study aims to design a suitable groin structure to mitigate erosion. The design process considers a 50-year return period flood (Q50), soil properties, and river cross-section data. The proposed groin structure has a length of 30 meters, a foundation width of 10 meters, a top width of 3 meters, and a height of 12 meters. The flood discharge is 2885.307 m³/s. Stability analysis confirms the structure is safe, with safety factors of 3.06 for overturning and 1.89 for sliding, both exceeding the minimum 1.5. The foundation is stable, with a maximum stress of 2.076 kg/cm², below the allowable 7.71675 kg/cm². These results indicate the groin structure effectively prevents riverbank erosion while ensuring structural stability.
Analysis of Heavy Equipment Productivity in the Construction of the Surabaya State Polytechnic Integrated Lecture Building Project Zulfar, Mochamad Ilham; Fernanda Arya Pramudya; Aulia Dewi Fatikasari
Civilla : Jurnal Teknik Sipil Universitas Islam Lamongan Vol 10 No 1 (2025): MARET
Publisher : Program Studi Teknik Sipil, Fakultas Teknik, Universitas Islam Lamongan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30736/cvl.v10i1.1356

Abstract

Building construction is intensively carried out in Indonesia. That is because Indonesia is a developing country that needs quite a lot of infrastructure, be it buildings, offices, roads, bridges, or ports, especially at the Surabaya State Shipbuilding Polytechnic which is building an Integrated Lecture Building. The development process certainly does not escape the need for heavy equipment, such as excavators. Heavy equipment is a crucial requirement in building construction projects, this is because heavy equipment is a means of supporting work in the project, for example excavation work. Because excavators are important tools in building construction projects, it is necessary to analyze the productivity of heavy equipment. This study aims to analyze the productivity of excavators so that they can improve operational efficiency, save costs, and determine the duration of work. 
Prioritization Of Enhancing Environmental Road Infrastructure In Slum Residential Zones M.Arma Muslimin; Heni Fitriani; Febrian Hadinata
Civilla : Jurnal Teknik Sipil Universitas Islam Lamongan Vol 10 No 1 (2025): MARET
Publisher : Program Studi Teknik Sipil, Fakultas Teknik, Universitas Islam Lamongan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30736/cvl.v10i1.1398

Abstract

This research was conducted using the AHP method to determine how to prioritize the handling of environmental roads in Pemulutan District, Ogan Ilir Regency. This research aims to prioritize the villages for environmental road handling in Pemulutan District, Ogan Ilir Regency. We employ a quantitative research approach, collecting data based on the established criteria. The data used includes secondary data and primary data. The stages of the research conducted include problem identification, followed by location determination, literature study, criteria determination and questionnaire design, data collection, data analysis using the Expert Choice application, and conclusion making. The research results show that among the several criteria established, the criteria of environmental road condition have 26,6% in determining the priority for environmental road improvements in the slum areas of the Pemulutan sub-district. We have identified Ibul Besar II Village as the village with the highest priority.
Study on the Ductility Behavior of Reinforced Concrete Columns with 10 mm Shear Reinforcement Diameter under Variable Axial Loads Aldivonso Tambunan; Hasibuan, Samsul Abdul Rahman Sidik
Civilla : Jurnal Teknik Sipil Universitas Islam Lamongan Vol 10 No 1 (2025): MARET
Publisher : Program Studi Teknik Sipil, Fakultas Teknik, Universitas Islam Lamongan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30736/cvl.v10i1.1410

Abstract

Understanding the ductility behavior of reinforced concrete columns is critical for ensuring structural safety in seismic regions, yet there remains limited research on the specific effects of shear reinforcement diameter under varying axial loads. This research investigates the ductility behavior of reinforced concrete columns with a 10 mm shear reinforcement diameter under varying axial loads of 1000 kN, 2500 kN, and 5000 kN. The study aims to understand the effect of shear reinforcement on the ductility of columns and how varying axial loads influence their performance. Numerical modeling was performed using Xtract software, with columns designed to have dimensions of 600 mm x 600 mm (unconfined) and 450 mm x 450 mm (confined). The study focuses on key parameters such as curvature at initial load, curvature at first yield, ultimate curvature, and moment-curvature relationships. The results show that as the axial load increases, the curvature ductility decreases, with the column under 1000 kN demonstrating the highest ductility and the column under 5000 kN showing the lowest. The findings highlight the significant role of shear reinforcement in enhancing the ductility of columns, suggesting that optimal reinforcement design is crucial for ensuring structural resilience under variable loading conditions.
Effect of Variations in Water Addition On Maximum Dry Weight in Clay Soil Compaction Rina Dwi Fatika; Agata Iwan Candra; Mahardi Kamalika Khusna Ali
Civilla : Jurnal Teknik Sipil Universitas Islam Lamongan Vol 10 No 2 (2025): SEPTEMBER
Publisher : Program Studi Teknik Sipil, Fakultas Teknik, Universitas Islam Lamongan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30736/cvl.v10i2.1397

Abstract

Soil is a crucial element in construction, serving as the foundation for structural support. Soil compaction is one of the primary methods to enhance soil stability, especially for clay soil, which expands and shrinks due to changes in moisture content. This study aims to analyze the effect of water content variation on the maximum dry unit weight in clay soil compaction. The experimental testing was conducted in the Civil Engineering Laboratory of Kadiri University using the TS-365 Automatic Standard Proctor machine. The water content variations used were 15%, 18%, 20%, 23%, and 26%. The results showed that the optimum moisture content for achieving the maximum dry unit weight was 23%, with a maximum dry unit weight of 1,743 g/cm³. Increasing water content up to the optimum point increases soil density, but excess water reduces the dry unit weight due to particle separation. This research contributes to optimizes clay soil compaction for more stable and sustainable construction. By determining the optimum moisture content, the compaction process can be conducted more efficiently, minimizing the risk of soil volume changes and improving soil-bearing capacity for long-term infrastructure development.
Optimization of High Early-Strength Concrete Mix Design for Structural Applications in the BJ. Habibie Stadium Construction Project Firman, Risman; Joey Limbongan; Yanny Febry Fitriani Sofyan; Munadrah; Syahrul Satar; Ahmad Tamsil Yunus; Andi Widiasari Maruddani
Civilla : Jurnal Teknik Sipil Universitas Islam Lamongan Vol 10 No 2 (2025): SEPTEMBER
Publisher : Program Studi Teknik Sipil, Fakultas Teknik, Universitas Islam Lamongan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30736/cvl.v10i2.1424

Abstract

This study investigates the application of high early-strength concrete (HESC) to accelerate the construction of the west tribune at BJ. Habibie Stadium, which underwent total demolition during a critical project phase. The research employed an experimental method to evaluate the feasibility of materials and optimize the mix design, beginning with small-scale trial mixes at the batching plant and validating the effectiveness of predefined quality control procedures. Aggregate testing was performed on coarse and fine aggregates, including analysis of colloid content, fineness modulus, water absorption, moisture content, and specific gravity. Mix design aimed to achieve a target strength of 30 MPa within 7-day using a water-cement ratio of 0.33 and chemical admixtures (retarder and superplasticizer). Concrete samples were tested for compressive strength at 3 and 7 days. Results showed the 7-day average compressive strength reached 35.19 MPa, confirming the effectiveness of the HESC mix for fast-track construction. Early strength gain was supported by good aggregate gradation and chemical admixture synergy, allowing earlier formwork removal and structural progression. This study concludes that the adoption of optimized HESC provides a viable solution for time-constrained infrastructure projects.
Application Of Crashing Method On Sutt Construction Project 150 Kv Kolaka - Pomalaa Switching - PT Antam Pomalaa Customer Rachim, Fatmawaty; Frans Ryanto Hasudungan Tampubolon; Herwina Rahayu Putri; Andi Butsainah Tumaadir
Civilla : Jurnal Teknik Sipil Universitas Islam Lamongan Vol 10 No 2 (2025): SEPTEMBER
Publisher : Program Studi Teknik Sipil, Fakultas Teknik, Universitas Islam Lamongan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30736/cvl.v10i2.1443

Abstract

Construction projects often experience delays that can result in a fine of 1/1000 of the contract value according to Presidential Regulation No. 54/2010. To overcome this, the crashing program method can be applied to accelerate the project duration by identifying and compressing the critical path. The case study on the 150 kV Kolaka - Pomalaa Switching - PT Antam Pomalaa SUTT Construction Project which experienced delays, analyzed the need for additional time, equipment and labor. With an initial contract duration of 300 calendar days, the implementation of the crashing program focused on four priority segments of work (TIP 40-54, TIP 01-11, TIP 23-40, and TIP 11-23). The results of the analysis showed that the application of the crashing program method successfully optimized the project completion duration to 263 days, allowing the project to return to the contract schedule and avoid potential fines.
Experimental and Confining Pressure Analysis of Steel Clamp Confined Unreinforced Concrete Subjected to Axial Concentric Load Yansiku, Sandy I.; Chandra, Jimmy
Civilla : Jurnal Teknik Sipil Universitas Islam Lamongan Vol 10 No 2 (2025): SEPTEMBER
Publisher : Program Studi Teknik Sipil, Fakultas Teknik, Universitas Islam Lamongan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30736/cvl.v10i2.1453

Abstract

Vertical cracks and spalling of the concrete cover in reinforced concrete structures are examples of failure modes of concrete columns due to repeated earthquake loads. Strengthening methods have been introduced including external jacketing using costly carbon FRP. This study investigated external strengthening of cylindrical concrete using low-cost thin steel confining sheets subjected to concentric axial loads. The experimental works in this study tested the tensile strength of the confining steel elements, the compressive strength of unconfined and confined cylindrical concrete. The composition of the steel confining elements is positioned in such that it could generate an optimal confinement effect and prevent local buckling. This study also developed the formulation of the confining stress and ultimate axial load based on the test results of the current study and past research data. The results showed that the use of steel clamp elements improves the axial strength and axial deformation of cylindrical concrete columns by over 200% without buckling of the clamp elements. The external confinement method can reduce vertical cracks and strain localization that usually occur in conventional cylindrical concrete. The proposed formulation of the confining stress and the ultimate axial load provided accurate results compared to the experimental results.

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