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All Journal LEADER: Civil Engineering and Architecture Journal
Danang Purwanto
Universitas Negeri Yogyakarta

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Boosting Boosting Rigid Pavement Productivity: Lessons from Experience and Working Hours on the Bengkulu Toll Road Project Akhmad Mujiburrokhman; Danang Purwanto; Fadhil Muhammad
LEADER: Civil Engineering and Architecture Journal Vol. 3 No. 4 (2025): August
Publisher : Fakultas Teknik Sipil dan Perencanaan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37253/leader.v3i4.11260

Abstract

Rigid pavement work was a key component in toll road construction that played a strategic role in the speed of project completion. Two important internal factors that affected productivity were experience and working hours. Mismanagement of either of these factors could cause project delays. This study aimed to analyze the significance of the influence of work experience and working hours on the productivity of rigid pavement work in the Trans-Sumatra Toll Road project, Bengkulu–Lubuklinggau Section 3. The research method used was a quantitative approach with multiple linear regression analysis. Primary data were obtained from daily work reports that recorded the area of concrete coverage, working hours, and worker experience. The results of the classical assumption tests showed that the regression model met the requirements of normality, multicollinearity, and heteroscedasticity. The partial test (t-test) showed that experience had a significant positive effect on productivity (Sig. = 0.000), while working hours had a significant negative effect (Sig. = 0.021). The simultaneous test (F-test) yielded Sig. = 0.000 with an R value of 0.608, meaning that the variables of experience and working hours together influenced productivity by 60.8%. The average productivity value was recorded at 91.05 m²/hour with a high variance (variance = 391.545), which reflected the actual conditions on-site and indicated the significant influence of both external and internal factors. This finding underscored the importance of effective human resource management and optimal work schedule arrangements to enhance the performance of rigid pavement construction on toll road projects.
Analysis of Natural and Artificial Lighting Assessment for SNI Compliance in Physics Laboratories Danang Purwanto; Fadhil Muhammad; Akhmad Mujiburrokhman
LEADER: Civil Engineering and Architecture Journal Vol. 3 No. 4 (2025): August
Publisher : Fakultas Teknik Sipil dan Perencanaan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37253/leader.v3i4.11266

Abstract

Lighting quality in educational laboratories plays a crucial role in supporting visual comfort, health, and accuracy during practical activities. According to the Indonesian National Standard (SNI 03-7062-2004), the minimum required illuminance for laboratories is 500 lux. This study aims to evaluate the lighting level in the Physics Laboratory at Universitas Negeri Yogyakarta by comparing natural lighting (lamps off) and combined natural–artificial lighting (lamps on). Measurements were conducted using a digital lux meter at a working plane of 0.80 m across 25 grid points. Data collection was carried out at three time intervals—morning (09.00–10.00), noon (12.00–13.00), and afternoon (15.00–16.00)—with three replications each. Results show that natural lighting alone cannot meet the standard, with maximum values of only 217.89 lux at noon and as low as 33.15 lux in the afternoon. In contrast, artificial lighting significantly increased illuminance, reaching 568 lux in the morning, 620.1 lux at noon, and 500.46 lux in the afternoon—all above the required minimum. It is concluded that artificial lighting is essential to maintain adequate and stable illuminance in the laboratory. Regular maintenance and energy-efficient lamp systems are recommended to ensure both compliance and sustainability.
Co-Authors Akhmad Mujiburrokhman Fadhil Muhammad Fadhil Muhammad