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All Journal International Journal of Civil Engineering and Infrastructure (IJCEI)
Rachmad Irwanto
University of Muhammadiyah Jakarta
Civil Engineering, Building, Construction & Architecture Decision Sciences, Operations Research & Management Engineering Environmental Science Transportation

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Analysis of Redundant Building Construction Material: A Case Study for A Hospital Building Project in Bogor Aditya Gilang Rakasiwi; Trijeti Trijeti; Rachmad Irwanto
International Journal of Civil Engineering and Infrastructure Vol 1, No 2 (2021): IJCEI Volume 1 No. 2
Publisher : University Of Muhammadiyah Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (381.671 KB) | DOI: 10.24853/ijcei. 1. 2. 24-34

Abstract

Construction materials are very significant spending in a construction project. They may create losses to Implementation Budget Plan (IBP) whenever the number is excessive. This paper is intended to find causes of redundant materials for guidelines to next projects to avoid excessive number of redundant materials. This paper details driving factors to material redundancy, total value of redundant materials and percentage ratio of redundant materials total value over IBP value. To obtain those factors causing redundant materials, this research run a set of questionnaires referenced from journals and refined by expert professionals. The questionnaires set was then handed to managerial peers and other non-managerial respondents to acquire their responses. The questionnaire outcome provides clues on major driving factors. They are lack of control at site, lack of supervision and lack of allocated facility for redundant materials. Further studies in this paper using price details in IBP and unit conversion on redundant materials have come to a material redundant value of Rp. 383.940.000 from an IBP value of Rp. 31.125.169.000. The highest percentage ratio of redundant materials is from ceramics fitting works at 34.18% while total value percentage ratio of redundant materials over IBP is 1.23%.
WHAT ACTUALLY DRIVE CONSTRUCTION PROJECT PERFORMANCE FROM OPERATIONS MANAGEMENT PERSPECTIVE Rachmad Irwanto
International Journal of Civil Engineering and Infrastructure Vol 2, No 1 (2022): IJCEI Volume 2 No. 1
Publisher : University Of Muhammadiyah Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (362.685 KB) | DOI: 10.24853/ijcei. 2. 1. 32-40

Abstract

Construction industry is always an interesting discussion topic. Some have it approached from its planning and scheduling view accommodating risk analysis. Other interesting topics related to construction industry are its business model, organization and operations. The author argues that construction is a function of them all. An emphasized study on a specific topic above would be less relevant given the fact that construction industry is highly fragmented. From literature review, factors such project integration, communications, knowledge and understanding, human resources, safety, financial, and cost management drive more significant impact on project scheduling performance
EFFECTIVENESS OF GOVERNMENT’S ELECTRONIC PROCUREMENT OF GOODS AND SERVICES IN ITS ROLE WITHIN THE GOVERNMENT’S PROJECTS Yan Ari Wibowo; Trijeti Trijeti; Rachmad Irwanto
International Journal of Civil Engineering and Infrastructure Vol 2, No 1 (2022): IJCEI Volume 2 No. 1
Publisher : University Of Muhammadiyah Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (399.434 KB) | DOI: 10.24853/ijcei. 2. 1. 57-69

Abstract

The government’s goods and services procurement are the major part in the state budget realization for its impact on performance of government’s departments. Considering the growing number of goods and services procurements, the government rules to set the procurement of goods and services electronically. This helps the government to run the state budget realization that is good in timekeeping, efficiency and accountability during procurement process. The effectiveness of electronic procurement of goods and services (e-procurement) of the government is strongly related to the government’s projects. This is presented in this study using a descriptive quantitative method on processed data output from SPSS v.23. The data was sourced from recorded government’s project in LKPP in 2019. The result shows good effectiveness level at 65,9% with supporting strong correlation value at 0,812 following consummated budget at 95,71%. Based on those statistics, this paper suggests that the run of government’s projects automatically would induce a consummated budget in which targets would be achieved and provide more benefits. Therefore, a good run of government’s projects needs better effectiveness of the government’s e-procurement of goods and services.
RISK MANAGEMENT IN THE JABODEBEK LRT (LIGHT RAIL TRANSIT) DEVEL-OPMENT PROJECT, IN JAKARTA AND ITS NEIGHBOURING CITIES Trijeti Trijeti; Andi Madeppungeng; Rachmat Said Rasul; Rachmad Irwanto
International Journal of Civil Engineering and Infrastructure Vol 2, No 1 (2022): IJCEI Volume 2 No. 1
Publisher : University Of Muhammadiyah Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (450.996 KB) | DOI: 10.24853/ijcei. 2. 1. 70-87

Abstract

LRT (Light Rail Transit) is one solution for an environmentally friendly transportation system to overcome congestion problems that occur in Jakarta. This mass transportation is considered effective because there is less land in the capital for road construction. The project is a complex project that includes design, material procurement and construction. The development that is currently underway is cross-service 1 (Cawang-Cibubur), cross-service 2 (Cawang-Dukuh Atas) and cross-service 3 (Cawang-Bekasi East). This study aims to determine the risks that often arise and find out the right way to handle the risks that arise in the construction of the JABODEBEK LRT project. Data was collected using a questionnaire on 45 respondents who were involved in the construction of the JABODEBEK LRT project. The variables studied in this study are aspects of scheduling planning, aspects of scope and work documents (contracts), aspects of organizational systems, coordination and communication, aspects of resource readiness/preparation, aspects of inspection systems, work control and evaluation and other aspects (force majeure /beyond the ability of the owner and contractor). Data processing in this study used the SPSS version 25 program. This study discusses seven variables classified as high risk (H) in the project.
Co-Authors Aditya Gilang Rakasiwi Andi Madeppungeng Rachmat Said Rasul Trijeti Yan Ari Wibowo