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Inventa: Journal of Science, Technology, and Innovation
Published by CV SCRIPTA INTELEKTUAL MANDIRI
ISSN : 31233147     EISSN : 31233155     DOI : 10.65310
Core Subject : Engineering,
Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Control & Systems Engineering Electrical & Electronics Engineering Engineering Industrial & Manufacturing Engineering Mechanical Engineering
Inventa: Journal of Science, Technology, and Innovation is a peer-reviewed scientific journal that focuses on the dissemination of high-quality research in the fields of science, technology, and innovation. It serves as an open platform for researchers, engineers, practitioners, and academics to publish original studies, applied research, and theoretical developments that advance scientific and technological knowledge. The journal welcomes manuscripts covering various topics, including natural and applied sciences, engineering and technology, information and communication technology, industrial innovation, renewable energy, and environmental studies. All submissions undergo a rigorous double-blind peer-review process to ensure academic integrity, originality, and scientific excellence. Inventa is published triannually in April, August, and December, promoting innovative, sustainable, and forward-looking contributions that support scientific progress and technological advancement at both national and international levels.
Arjuna Subject : Teknik (semua kategori) - Teknik (Lain-Lain)
Articles 125 Documents
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Evaluasi Tebal Perkerasan Lentur Menggunakan Metode Manual Desain Perkerasan (MDP) 2024 pada Ruas Jalan Pembangunan Desa Teladan–Kelurahan Tempel Rejo Kecamatan Curup Selatan Kabupaten Rejang Lebong Jaka Malis Irawan; Rezi Munizar
Journal of Science, Technology, and Innovation Vol 2 No 1 (2026): : August: Inventa: Journal of Science, Technology, and Innovation
Publisher : CV SCRIPTA INTELEKTUAL MANDIRI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.65310/8h1r7669

Abstract

The Teladan Village–Tempel Rejo Subdistrict Road in South Curup District, Rejang Lebong Regency, has experienced a decline in service quality due to increased traffic volume, surface damage, and limitations in the supporting conditions of the road structure. This study aims to evaluate the required thickness of flexible pavement using the 2024 Pavement Design Manual (MDP) method based on traffic characteristics and subgrade bearing capacity. The research method employed an empirical approach through field surveys, collection of Average Daily Traffic (ADT) data, observation of pavement and drainage conditions, and California Bearing Ratio (CBR) testing. Analysis was conducted through vehicle classification, calculation of the Vehicle Damage Factor (VDF), Equivalent Standard Axle Load (ESAL), and Cumulative Equivalent Standard Axle Load (CESAL), and determination of the pavement structure in accordance with MDP 2024. The results of the study showed an average traffic volume of 249 vehicles per day with a subgrade CBR value of 6%. The recommended pavement structure consists of 4 cm of AC-WC, 6.5 cm and 8 cm of AC-BC, 20 cm of Class A aggregate, and 15 cm of Class B aggregate.
Evaluasi Produktivitas Tenaga Kerja Konstruksi Menggunakan Metode Work Sampling pada Pekerjaan Struktur Beton Riyan Putra Pratama; Rezi Munizar
Journal of Science, Technology, and Innovation Vol 2 No 1 (2026): : August: Inventa: Journal of Science, Technology, and Innovation
Publisher : CV SCRIPTA INTELEKTUAL MANDIRI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.65310/6gv8md86

Abstract

Labor productivity is a critical factor influencing the success of construction projects in terms of cost, quality, and schedule performance. This study aimed to evaluate labor productivity in reinforced concrete structural works, including reinforcement, formwork, and concreting, using the Work Sampling method. A quantitative observational approach was employed through random observations to classify workers' activities into three categories: Effective Work, Essential Contributory Work, and Idle Time. The observation data were analyzed using the Labor Utilization Rate (LUR) indicator to measure the efficiency of labor time utilization. The results showed that the project's average LUR was 55.50%, indicating satisfactory labor productivity as it exceeded the industry benchmark of 50%. Reinforcement work achieved the highest LUR of 62.10%, while concreting recorded the lowest LUR of 47.10% due to high Idle Time caused by delays in ready-mix concrete delivery, concrete pump interruptions, and inefficient material layout. These findings provide a basis for improving logistics management and work coordination to enhance productivity in reinforced concrete construction projects.
Peningkatan Jalan Desa Air Lang Kecamatan Sindang Dataran Kabupaten Rejang Lebong Tahun 2025 Wahyu Darmawan; Rezi Munizar
Journal of Science, Technology, and Innovation Vol 2 No 1 (2026): : August: Inventa: Journal of Science, Technology, and Innovation
Publisher : CV SCRIPTA INTELEKTUAL MANDIRI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.65310/t81k3f51

Abstract

Road infrastructure plays an important role in supporting community mobility, agricultural product distribution, and regional economic growth. The condition of Air Lang Village Road, Sindang Dataran District, Rejang Lebong Regency, consisted of a Lapen (Penetration Macadam) pavement that had deteriorated, requiring reconstruction using a flexible pavement structure. This study aimed to describe the stages of road reconstruction implementation and to calculate the work volumes based on the design dimensions. A quantitative descriptive method was employed using data obtained from field observations, engineering drawings, technical documents, and the 2018 General Specifications for Highways (Bina Marga). The reconstructed road section is 4,450 m long, with work volumes of 4,272.00 m³ for Selected Embankment, 3,137.25 m³ for Aggregate Base Class B, 3,070.50 m³ for Aggregate Base Class A, 1,201.50 m³ for Asphalt Concrete Binder Course (AC-BC), and 801.00 m³ for Asphalt Concrete Wearing Course (AC-WC). The results indicate that implementing the construction in accordance with technical specifications produced a stronger pavement structure, extended the service life of the road, and improved user comfort, safety, and transportation service quality.  
Pengaruh Kualitas Produk dan Pelayanan Developer Terhadap Kepuasan Konsumen Perumahan Komersil di Kota Bengkulu Recky Kurniawan; Rezi Munizar
Journal of Science, Technology, and Innovation Vol 2 No 1 (2026): : August: Inventa: Journal of Science, Technology, and Innovation
Publisher : CV SCRIPTA INTELEKTUAL MANDIRI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.65310/mkyc5r67

Abstract

The rapid growth of the property sector in Bengkulu City has intensified competition among developers in meeting the increasing demand for quality housing. This study aims to examine the influence of product quality and developer service quality on customer satisfaction in commercial housing developments in Bengkulu City. A quantitative survey approach was employed involving 100 respondents selected through purposive sampling. Data were collected using questionnaires and analyzed through validity and reliability tests, multiple linear regression, t-test, F-test, and the coefficient of determination (R²). The results indicate that both product quality and developer service quality have a positive and significant effect on customer satisfaction, both partially and simultaneously. Product quality was identified as the most dominant factor influencing customer satisfaction. The proposed model explained 71% of the variance in customer satisfaction, while the remaining 29% was attributed to factors beyond the scope of the study. These findings provide practical insights for developers to improve building quality and service performance to enhance customer satisfaction and strengthen market competitiveness.
Perancangan Sistem Informasi Pelaporan K3 Berbasis Website untuk Meningkatkan Efektivitas Komunikasi dan Pengelolaan Data di PT XYZ Adela Kusuma Yudhani; Sevilla Muthia Ariawan; Shafira Aulia; Siti Julianti; Alif Ulfa Afifah
Journal of Science, Technology, and Innovation Vol 2 No 1 (2026): : August: Inventa: Journal of Science, Technology, and Innovation
Publisher : CV SCRIPTA INTELEKTUAL MANDIRI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.65310/yscb8e18

Abstract

This study aimed to design a website-based Occupational Safety and Health (OSH) reporting information system to improve communication effectiveness and data management at PT XYZ. The main issues included a manual reporting system, limited accessibility due to the distance between divisions, and low employee participation in reporting workplace hazards. The study adopted the Industrial and Engineering Systems Body of Knowledge (IISE BOK), integrating the principles of Safety, Information Engineering, and Systems Design. The research stages consisted of problem identification through workplace observation and environmental measurements, system design, and functional evaluation. The results indicated that most workplace environmental parameters remained below the permissible exposure limits; however, noise levels reached 83.4 dBA and humidity reached 69%, indicating the need for continuous monitoring. In addition, oil spills and inadequate waste management practices were identified. The proposed system supports real-time reporting, photo upload, centralized data storage, and QR Code access, thereby enhancing reporting effectiveness, data management, and the implementation of an OSH culture within the company.
Perancangan Sistem Terintegrasi Produksi Ragum Custom di SSML Reza Aditya Fauzi; Rijki Nurlaeli; Muhamad Ridwan; Muhammad Harsya Alfarisi; Lisye Fitria
Journal of Science, Technology, and Innovation Vol 2 No 1 (2026): : August: Inventa: Journal of Science, Technology, and Innovation
Publisher : CV SCRIPTA INTELEKTUAL MANDIRI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.65310/xerwtr32

Abstract

Small Scale Manufacturing Laboratory (SSML) has the capability to manufacture custom vises based on customer requirements and specifications. However, the ordering and production management processes are still performed manually, resulting in limited coordination and production monitoring. This study aimed to design an integrated Engineer-to-Order (ETO)-based production system for custom vises with ordering and production monitoring features. The research employed a Research and Development (R&D) approach consisting of needs identification, literature review, system design, production process simulation using FlexSim, and the development of Standard Operating Procedures (SOPs) and Occupational Safety and Health (OSH) procedures. The results indicate that the proposed system integrates order management, product specification management, production progress monitoring, and production time estimation into a structured platform. Customer and administrator dashboards improve information management, while the production simulation visualizes workflow prior to operational implementation. The proposed system has the potential to enhance the effectiveness of custom vise production management and improve service quality for both internal and external customers.
Analisis Kelayakan Ekonomi dan Teknis Proyek Pembangunan Jalan Tol Segmen Central Business District Menggunakan Metode Value Engineering Buyung Mantap; Frando Heriss Mamuri
Journal of Science, Technology, and Innovation Vol 2 No 1 (2026): : August: Inventa: Journal of Science, Technology, and Innovation
Publisher : CV SCRIPTA INTELEKTUAL MANDIRI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.65310/tg30gm84

Abstract

The imbalance between increasing vehicle volumes and road infrastructure development has triggered congestion escalation in urban central business areas. This study aims to evaluate the economic and technical feasibility of a 12.5-kilometer toll road development project and optimize construction costs through a Value Engineering approach. The analysis was conducted using the Net Present Value (NPV), Internal Rate of Return (IRR), Benefit-Cost Ratio (BCR), and Payback Period indicators with a 30-year investment period. The initial analysis indicates that the project is financially feasible, with an NPV of IDR 450.2 billion, an IRR of 12.4%, and a BCR of 1.28. The implementation of Value Engineering through precast system optimization and material substitution resulted in construction cost savings of 14.2% or IDR 185 billion. After optimization, the NPV increased to IDR 635.7 billion, the IRR improved to 14.1%, the BCR reached 1.45, and the Payback Period was reduced to 11.8 years. The integration of economic evaluation and value engineering provides a more efficient and sustainable toll road development strategy. This approach can serve as a basis for urban infrastructure investment decision-making by considering technical, economic, and long-term risk aspects.
Analisis Karakteristik Tanah Melalui Penyelidikan Tanah (Soil Investigation) Sebagai Dasar Perencanaan Pondasi Bangunan Gedung Buyung Mantap; Rendi Zoeyantara
Journal of Science, Technology, and Innovation Vol 2 No 1 (2026): : August: Inventa: Journal of Science, Technology, and Innovation
Publisher : CV SCRIPTA INTELEKTUAL MANDIRI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.65310/bv06yv13

Abstract

Soil investigation is an essential stage in construction planning because soil characteristics influence the safety and stability of building foundation systems. This study aims to analyze soil characteristics through soil investigation activities as a basis for determining appropriate foundation types for building structures. The research method used was descriptive quantitative through field investigation and laboratory testing. Data were obtained through soil boring, Standard Penetration Test (SPT), soil sampling, and laboratory tests including water content, specific gravity, Atterberg limits, shear strength, and consolidation tests. The results indicate variations in soil characteristics based on depth, density values, mechanical parameters, and soil bearing capacity, which serve as the basis for foundation system evaluation. This study confirms that accurate soil investigation data can improve foundation design reliability, reduce the risk of construction failure, and support efficient building planning. An integrated approach combining field testing and laboratory analysis provides a more comprehensive understanding of soil behavior as a structural supporting medium.
Analisis Perbandingan Biaya dan Waktu Konstruksi Struktur Bangunan Menggunakan Sistem Beton Bertulang dan Baja Ringan Eygen Rapendes; Buyung Mantap
Journal of Science, Technology, and Innovation Vol 2 No 1 (2026): : August: Inventa: Journal of Science, Technology, and Innovation
Publisher : CV SCRIPTA INTELEKTUAL MANDIRI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.65310/ns7k4b52

Abstract

The selection of a structural system is an important factor in determining the success of construction projects, particularly in terms of cost efficiency and implementation time. Reinforced concrete remains a widely used conventional method due to its high structural durability, while lightweight steel has emerged as an alternative construction system with practical characteristics and faster installation processes. This study aims to compare the construction costs and implementation time between reinforced concrete and lightweight steel systems for a two-story residential building in Bengkulu. The research employed an empirical comparative study through identical building modeling, work volume calculations, unit price analysis based on SNI standards, and construction duration estimation. The results indicate that lightweight steel provides lower construction costs and shorter implementation time compared with reinforced concrete. Lightweight steel is recommended for projects prioritizing time and resource efficiency, while reinforced concrete remains a suitable option for buildings requiring higher structural durability.  
Perencanaan Pembangunan SD Negeri 142 Seluma Kecamatan Ulu Talo Kabupaten Seluma dalam Program Revitalisasi Satuan Pendidik Tahun 2026 Hengki Saputra; Buyung Mantap
Journal of Science, Technology, and Innovation Vol 2 No 1 (2026): : August: Inventa: Journal of Science, Technology, and Innovation
Publisher : CV SCRIPTA INTELEKTUAL MANDIRI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.65310/em43pr84

Abstract

The School Revitalization Program is a strategic government initiative aimed at improving the quality of educational facilities and infrastructure by providing safe, adequate, and standards-compliant school buildings. This study aims to develop the technical planning for the construction of SD Negeri 142 Seluma under the 2026 School Revitalization Program. The study employed a qualitative descriptive approach through field research, including interviews, building condition surveys, dimensional measurements, damage assessment based on the PUPR Building Damage Assessment Form, and technical document analysis. The results indicate that the school received five revitalization components: rehabilitation of three classrooms, rehabilitation of the library, construction of a new administration (ADM) building, construction of a school health unit (UKS), and development of an assembly field. The assessed building damage was classified as moderate, with damage levels ranging from 33.38% to 41.99%. The planning process produced detailed engineering drawings, technical specifications, and a cost estimate totaling IDR 1,141,000,000. The resulting technical planning provides a reliable basis for self-managed construction implementation while supporting improvements in the quality of educational services.

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