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Jurnal Teknik Sipil dan Perencanaan
Published by Universitas Negeri Semarang
ISSN : -     EISSN : 25031899     DOI : https://doi.org/10.15294/jtsp
Core Subject : Engineering,
Civil Engineering, Building, Construction & Architecture
Jurnal Teknik Sipil dan Perencanaan starting in 2024 migrates to better secure from various unwanted things, including journal hacking and so on. To submit, the author please visit the new website page of our journal at the link https://journal.unnes.ac.id/journals/jtsp
Arjuna Subject : Teknik (semua kategori) - Teknik Sipil dan Struktur
Articles 39 Documents
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The Impact of The Wage System on Estimating Construction Worker Productivity Mirnayani, Mirnayani; Yunita Dian Suwandari
Jurnal Teknik Sipil dan Perencanaan Vol. 27 No. 2 (2025): Jurnal Teknik Sipil dan Perencanaan
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/jtsp.v27i2.15020

Abstract

A construction project's productivity significantly depends on its workforce's efficiency. This study examines the effect of different wage systems—daily wage and piece-rate (borongan) systems—on the productivity of construction workers, using a neural network model for analysis. Data were collected from workers at the ESP-Control Building Project of PLTU Units 9 & 10 through field observations and questionnaires. Productivity was assessed via the Work Sampling method, while SPSS software was employed to analyze key factors influencing worker performance. The results show that the piece-rate system is more effective in enhancing productivity than the daily wage system, as indicated by higher Labour Utilization Rates (LUR). A neural network model developed for productivity estimation achieved high accuracy, with R² values of 0.815 for the daily wage system and 0.817 for the piece-rate system. Practically, these findings can help project managers improve scheduling efficiency, minimize idle time, and reduce labor costs by adopting an appropriate wage system.
Analysis of the Impact of PPE Implementation on Occupational Safety and Health on Construction(Case Study: 4-Storey Residential Building Project) Bustamin, Maulidya; Wisnu Abiarto Nugroho; Dwi Sekar Anggraini
Jurnal Teknik Sipil dan Perencanaan Vol. 27 No. 2 (2025): Jurnal Teknik Sipil dan Perencanaan
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/jtsp.v27i1/15139

Abstract

Project construction can be risky for workers if Personal Protective Equipment (PPE) is improper and correctly used. Complex construction projects are typically carried out in large cities like Surabaya. Usually, these projects involve contract workers with varying knowledge and awareness regarding PPE use. This study aims to analyze the level of work accident risk in a four-story house project undertaken by PT. Surya Andalan Bina Perkasa in Surabaya. The research method used was quantitative, with data collection techniques using questionnaires distributed to 30 samples. Data analysis techniques were carried out using simple linear regression and hypothesis testing. The study results show the risk level of work accidents in the four-story residential project carried out by PT. Surya Andalan Bina Perkasa is quite low. Types of work accidents with low risk include shortness of breath due to dust, head impacts, injuries from falls from heights, muscle and bone injuries caused by falling materials, hearing loss due to noise, and electric shocks. Types of risks in the low-medium category include irritation due to dust or wood shavings, minor foot injuries, hand injuries, body parts being struck by sharp objects, and accidents caused by heavy equipment. The level of worker compliance with PPE use is still low, as evidenced by 70% of workers being non-compliant and 30% being somewhat compliant in using PPE while working. The study results also show an impact of PPE implementation on occupational health and safety, evidenced by a correlation value of 24.9%. The significance of the hypothesis test is 0.005, and the determination value is 25.3%, indicating that the impact of PPE implementation on occupational health and safety is insignificant, as it only increases occupational health and safety by 25.3%.
Concrete Brick Wasted Material Substitution Performance: Role of Fly Ash, Mixture Composition, and Compressive Strength Rul, Syahrul; Amir
Jurnal Teknik Sipil dan Perencanaan Vol. 27 No. 2 (2025): Jurnal Teknik Sipil dan Perencanaan
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/jtsp.v27i2.19331

Abstract

The optimization of wasted materials, especially local fly ash, provides space to be used as a construction material with the potential to partially replace cement without reducing the mechanical strength of concrete bricks to a proportion of 20%. Using waste materials like fly ash will provide economic value, environmental sustainability, and strength and durability. A mixture of local sand, PCC cement, and fly ash material is 0%, 5%, 10%, 15%, and 20%. Concrete bricks or commonly called paving blocks are products with sand, water, and cement compositions, as well as waste materials, the installation and maintenance of concrete bricks is very easy and can be formed with various variations that provide aesthetic aspects, the mechanical parameters of concrete bricks are 3, 14, and 28 days old compressive strength tests with a total of 75 samples with a quality classification D. Weight ratio 1:4 cement,  sand and cement water 0.58. The weight of the cement determines the amount of fly ash. The performance of fly ash waste-substitution concrete bricks by 10% produced a quality of 11,674 MPa in 28 days.
Analysis of Flood Discharge in the Balangan Sub-Watershed Using HEC-HMS Erisa, Erisa; Helda, Noordiah
Jurnal Teknik Sipil dan Perencanaan Vol. 27 No. 2 (2025): Jurnal Teknik Sipil dan Perencanaan
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/jtsp.v27i2.21976

Abstract

Flooding poses significant challenges, especially in areas with rapid urban development, such as Balangan Regency, South Kalimantan. This study analyzes the hydrological conditions contributing to floods in the Balangan River watershed using the HEC-HMS (Hydrologic Modeling System). The research employs secondary data, including rainfall data from GSMaP (Global Satellite Mapping of Precipitation), watershed delineation from DEMNAS, and soil type data from Google Earth Engine. Precipitation data spanning 20 years (2003–2022) were analyzed using the Thiessen Polygon Method and statistical tests such as chi-square and Smirnov-Kolmogorov for distribution fitting. Hydrological modeling was conducted using the SCS Curve Number method integrated into HEC-HMS to estimate flood discharges for various return periods. The results indicate peak discharges of 2,916.8 m³/s, 4,309.7 m³/s, 5,590.8 m³/s, 7,288.5 m³/s, 9,625.8 m³/s, and 11,943.4 m³/s for return periods of 2, 5, 10, 20, 50, and 100 years, respectively. These findings highlight the critical impact of land cover, soil characteristics, and rainfall patterns on flood risks. The study underscores the importance of incorporating hydrological modeling tools like HEC-HMS for effective flood risk management and planning in the region.
Impact of River Infrastructure on Sediment Distribution to Maintain Reservoir Lifespan: A Case of the Bili-Bili Reservoir, Jeneberang Basin, Indonesia Hasnawi, Mursyid Hasnawi; Ritnawati; Mahyuddin; La Ode Agisaqma; Muhammad Subri
Jurnal Teknik Sipil dan Perencanaan Vol. 27 No. 2 (2025): Jurnal Teknik Sipil dan Perencanaan
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/jtsp.v27i2.23178

Abstract

This study investigates the impact of river infrastructure on sediment distribution in the Bili-Bili Reservoir. Bathymetric data obtained using an echo-sounding sonar system were processed with Surfer 14 to analyze reservoir bottom morphology, storage capacity, and sediment accumulation. Hydrological modeling with NRECA calibration was combined with field measurements to estimate sediment inflow and storage loss. Results show cumulative sedimentation increased by 42% (1997–2005), 33% (2005–2011), and 25% (2011–2017), with a peak deposition of 21.74 × 10⁶ m³ in 2005. Following the construction of sabo dams, consolidation dams, and check dams in 2011, sedimentation rates decreased by 57% relative to 2005. Reservoir capacity declined from 365 × 10⁶ m³ in 1997 to 264 × 10⁶ m³ in 2017, reducing the effective service life by approximately 6.5 years. The remaining lifespan of the reservoir in 2017 was 24 years and 4 months, compared to the original design life. These findings emphasize that periodic dredging (every four years), monthly sediment removal at the consolidation dam, and sediment trapping in the Jeneberang watershed are essential to sustain reservoir performance.
Seismic Stiffness Evaluation of RC Dual Systems in Varying Geometries: A Pushover-Based Study Using Indonesian Codes Fuqaha, Sameh; Nugroho , Guntur
Jurnal Teknik Sipil dan Perencanaan Vol. 27 No. 2 (2025): Jurnal Teknik Sipil dan Perencanaan
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/jtsp.v27i2.25494

Abstract

This study evaluates the seismic performance of reinforced concrete (RC) dual systems that combine moment-resisting frames with shear walls, using nonlinear pushover analysis in accordance with Indonesian seismic design codes (SNI 1726:2019 and SNI 2847:2019). A total of 32 analytical models were developed to examine the influence of four critical parameters: story height (3–10 stories), span length (5.5–6.5 m), shear wall thickness (200–250 mm), and concrete compressive strength (20–25 MPa). The elastic stiffness factor was determined as the base shear ratio to roof displacement at the onset of first hinge formation. In contrast, base shear capacity was derived from the pushover curves. Results show that geometric parameters exert the most decisive influence on seismic response, with stiffness decreasing by more than 50 percent as story height increases and by approximately 8 percent with longer spans. Material enhancements provide only modest gains of 2 to 7 percent. These findings emphasize the dominant role of structural configuration in drift control and ductility demand, offering practical recommendations for optimizing RC dual systems under Indonesian codes and improving the resilience of mid- to high-rise buildings in seismic regions.
Analysis of Vegetation Diversity and Emission Absorption Sufficiency on the Pandaan-Malang Green Toll Road Izatullilah; Nurita Prameswari, Putri; Ahmad Abdul Aziz, Hafif; Ayu Kusuma Dewi, Vita
Jurnal Teknik Sipil dan Perencanaan Vol. 27 No. 2 (2025): Jurnal Teknik Sipil dan Perencanaan
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/jtsp.v27i2.27589

Abstract

Green corridors on toll roads are a natural strategy designed to reduce transportation emissions while maintaining the ecological function of the area. This study aims to assess the ability of vegetation to absorb carbon along the Pandaan–Malang Green Toll Road by comparing the total emissions produced by passing vehicles. The method employed is a quantitative descriptive approach with a bottom-up methodology to calculate carbon emissions and estimate CO₂ absorption, utilizing existing vegetation data. The research data revealed that the total annual emissions reached 63.32 million kg, while the total vegetation absorption was only 51.08 million kg or 19.33%, resulting in a deficit of 12.24 million kg (80.67%). Trembesi trees dominate, contributing around 90% of the total absorption, but dependence on this monoculture poses ecological risks due to pest attacks and climate pressure. Therefore, a species diversification strategy that focuses on zoning and strengthening technical regulations on green belts is needed. The policy implications aim to transform green highways from aesthetic elements into sustainable ecological infrastructure that actively functions in climate change mitigation and improves ecosystem service quality.
Performance Index-Based Multi-Criteria Optimization of GGBFS Replacement in Concrete for Enhanced Strength, Durability, and Sustainability Mlodi, Lodgar Gabriel; Herry Suryadi Djayaprabha
Jurnal Teknik Sipil dan Perencanaan Vol. 27 No. 2 (2025): Jurnal Teknik Sipil dan Perencanaan
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/jtsp.v27i2.29679

Abstract

Using ground granulated blast furnace slag (GGBFS) as a partial replacement for ordinary Portland cement (OPC) has emerged as a sustainable alternative in concrete production, offering notable improvements in durability and long-term strength. However, identifying the optimal replacement level that balances mechanical performance, durability, and sustainability remains challenging. This study addresses this gap by critically reviewing sixteen peer-reviewed studies conducted between 2006 and 2025, the broadest dataset yet applied in a performance index (PI)-based evaluation. A PI was developed to normalize and compare diverse mechanical and durability parameters, integrating them into a multi-criteria framework. The PI was further evaluated under three practical weightings: Balanced (50/50), Durability-prioritized (60/40), and Strength-prioritized (40/60). Results indicate that a 40% GGBFS replacement delivers the highest composite performance under balanced criteria, 20% is optimal for strength-driven applications, and 60–70% provides superior durability in aggressive environments, especially when activation or enhanced curing is applied. This study demonstrates the practical utility of an integrated PI approach for sustainable concrete design.
Compressive Strength and Damage Simulation of Type V Cement-Based Concrete with GGBFS Addition Audiyati Ishmata Hani'a; Norma Puspita; Marguan Fauzi
Jurnal Teknik Sipil dan Perencanaan Vol. 27 No. 2 (2025): Jurnal Teknik Sipil dan Perencanaan
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/jtsp.v27i2.30023

Abstract

The durability of concrete structures in marine environments is often compromised by exposure to aggressive chemical agents. Although Type V cement is designed for high sulphate resistance, it remains susceptible to chloride penetration and magnesium-induced softening. This study investigates the mechanical performance of Type V cement-based concrete modified with GGBFS under simulated marine conditions. Specimens with 0%, 2%, 4%, and 6% GGBFS replacement were cast and cured in synthetic seawater for 7, 14, and 28 days before a compressive strength test. Experimental results showed that 2% GGBFS addition yielded the highest compressive strength of 48.12 MPa, which outperformed the regular concrete (42.32 MPa) at 28 days. Numerical simulations using the Mazars damage model in Cast3M were conducted to complement experimental findings, with mesh densities between 16 and 32 sides. Both experimental and modeling results were compared to BS EN 12390-3:2009 standards to categorize damage patterns. The analysis demonstrated that concrete with 2% dan 4% GGBFS exhibited satisfactory damage behaviour, while 0% and 6% GGBFS mixtures were classified as unsatisfactory. Further, the 16-sided mesh configuration generated damage patterns comparable to 2% and 4% GGBFS specimens, whereas the 32-sided mesh closely aligned with damage characteristics of 0% and 6% GGBFS concrete. This study highlights a novel experimental-numerical framework for optimizing GGBFS levels in marine conditions, demonstrating that integrated approaches effectively enhance performance evaluation and durability assessment.

Page 4 of 4 | Total Record : 39

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