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All Journal Rekayasa Sipil Jurnal Rekayasa Sipil IJIEEB : International Journal of Integrated Education, Engineering and Business Proceeding of World Conference Journal of Applied Science, Engineering, Technology, and Education Wasana Nyata Jurnal Pengabdian West Science WASANA NYATA
Lutfiansyah, Yopi
Faculty Of Engineering, University Mercu Buana Jakarta, Indonesia
Humanities Automotive Engineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Electrical & Electronics Engineering Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mathematics Medicine & Pharmacology Public Health Social Sciences Transportation Veterinary Other

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Journal : Proceeding of World Conference

 1 
Analysis of Cost and Quality Comparison of Recycling Project Fence (RFP) with Zincalume Project Fence : Case Study Project X in Jakarta Egar Albert; Yopi Lutfiansyah
Journal of World Conference (JWC) Vol. 3 No. 1 (2021): January 2021
Publisher : NAROTAMA UNIVERSITY, Indonesia

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Abstract

The fence of the project is a fence established on the project land for the safety boundary of the project during the period of implementation of the project, according to The Perda Dki No.7 Year 1991 the fence of the project should pay attention to the safety and harmony of the surroundings and have a height of at least 2.5 meters. The cost of installing a project fence requires a relatively high cost on a project that has a long perimeter area. Project Fence usually uses zincalume material and is often a problem of construction waste because the material is not durable, this led to the innovation of Recycling Project Fence (RFP). In this study, the authors conducted a cost and quality comparison between the two materials by conducting cost analysis in accordance with the contractor's cost analysis and disseminating 2 stages of questionnaires on quality comparison to experts and respondents who are contractor employees who are accustomed to using RFP. The results of the questionnaire will be conducted to test validity and reliability using statistical software and analysis of relative importance index (RII). The result of this study is the total cost required for PPDU Rp.1,097,864,515 and the total cost required for fencing the zincalume project Rp. 980,546,545 where PPDU is more expensive Rp. 117,317,979 or 10.69%. with the most influential variables on the comparison of RFP quality with Zincalume are Features (0.860), Durability (0.851), Aesthetics (0.850), Performance (0.823), Reliability (0.693). So that the cost of fencing zincalume project is more effective while ppdu quality is more effective to use.
Earned Value Method Evaluation of Project Time and Cost Control on Crane Support Structure Construction Projects PT Pindad (Persero) Yopi Lutfiansyah; Wilhelmus Tarigan
Journal of World Conference (JWC) Vol. 3 No. 4 (2021): July 2021
Publisher : NAROTAMA UNIVERSITY, Indonesia

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Abstract

PT Pindad (Persero) is a manufacturer of heavy-duty equipment such as armoured vehicles. As a result, a crane facility is required to facilitate the material transportation operations, which is supported by a steel structure apart from the building structure. The crane support structure construction process was 19.75 percent delayed until the 12th week. The goals of this study were carried out to evaluate project control using the Earned Value method, which intends to identify project performance in terms of cost and time before and after evaluating project control and knowing the predicted cost and time of total project completion. Schedule Performance Index (SPI) of 0.85 shows a delay of 10.927 percent from the initial plan of 73.731 percent with a realization of 62.804 percent. Meanwhile, the Cost Performance Index (CPI) of 1.22 indicates that the costs incurred are still less than the estimated budget, with a potential profit of Rp. 1,144,245,992.81 or 11,425 percent of the total project budget. Based on the analysis of performance calculations, the estimated project completion time is 26 weeks, or longer than the planned schedule of 22 weeks. In terms of cost, the estimated cost of completing this project is Rp. 8,870,754,007,19. This means that, with the current project cost performance, the project will have a potential profit of Rp. 1,144,245,992.81 or 11,425% of the total project budget. Based on performance calculations, the estimated project completion time is 26 weeks, which is longer than the planned schedule of 22 weeks. The total cost of completing this project is projected to be Rp. 8,870,754,007,19. This means that, regarding the existing project cost performance, the project has a potential profit of Rp. 1,144,245,992.81, or 11.425% of the total project budget.
Analysis of The Causes of Project Delays Ceramic Finishing Work With Importance Index Method to Improve Time Performance Tri Wahidi; Yopi Lutfiansyah; Elhazri Hasdian; Novika Candra Fertili
Journal of World Conference (JWC) Vol. 3 No. 5 (2021): September 2021
Publisher : NAROTAMA UNIVERSITY, Indonesia

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Abstract

UrbanTown Serpong is an integrated vertical residential area developed in the buffer zone of the capital city, business and industrial center, and connected to mass transportation facilities. Which carries the concept of integrated entrepreneurship with many supporting facilities. However, not all construction projects can be completed on schedule. There are several delay factors that can occur, such as caused by time estimation; improper management; material problems; labor; equipment; finance; and an unsupportive environment. This study aims to determine the dominant factors that cause delays during construction and solutions to prevent delays in the development of the UrbanTown - Serpong Project. The factor analysis uses the Importance Index (IMPI) method to assess which factors are classified as high in the project. The results of the study indicate that there are 4 out of 31 indicators that have a significant effect on the factors causing work delays, including: constrained by labor shortages; the work is not carried out with the correct method; lack of material; and owner delays in making decisions.
Comparisonal Analysis of Costs And Working Time Column Using Semi System Form and Aluminum Form in Building Project Case Study : Osaka Riverview Apartment Project Aji Tri Setiadi; Elhazri Hasdian; Yopi Lutfiansyah; Novika Candra Fertilia
Journal of World Conference (JWC) Vol. 3 No. 5 (2021): September 2021
Publisher : NAROTAMA UNIVERSITY, Indonesia

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Abstract

In planning a building or infrastructure, various methods and strategies are needed to achieve the target for timely completion, resulting in a strong and beautiful quality building. Structural components such as foundations, columns, beams, and plates play an important role in supporting the establishment of a building. To produce the quality of the structural components required special skills in doing the job. Formwork has an important value as a mold (formwork) to form the dimensions of the structural components that have been planned. In this study, we will discuss the comparison of usage related to the cost and time of using different column formwork, namely semi-system formwork and aluminum formwork used to build multi-storey buildings. From the two types of formwork, the budget for formwork work will be analyzed to obtain an economical budget and efficient time. The comparative analysis of formwork semi system and formwork aluminum get results, for formwork semi system requires a cost of Rp. 1,366,460,000 with an implementation time of 35 days while using aluminum formwork is Rp. 1,114,460,000 with an implementation time of 20 days. This means that using semi system formwork is more expensive by Rp. 252,000,000 compared to semi system formwork. Meanwhile, the implementation time for aluminum formwork is 15 days faster than semi-system formwork.
Analysis of The Causes of Delay Completion of Development Projects Workshop Facility - Bekb, Melak, East Kalimantan Hamonangan Girsang; Refianda Eki Putra; Irriene Indah Susanti; Yopi Lutfiansyah
Journal of World Conference (JWC) Vol. 4 No. 3 (2022): May 2022
Publisher : NAROTAMA UNIVERSITY, Indonesia

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Abstract

Construction projects often suffer from poor performance in terms of execution time management. This is a problem that must be taken seriously. When a delay occurs in a project, there will be additional costs that must be incurred outside the contract and can cause losses for the parties involved, especially the construction contractor. Therefore, it is necessary to pay more attention to the delay in implementation time. The research method used in this research is descriptive quantitative by determining the research variables based on previous journals. Supported by the distribution of phase 1 questionnaires and phase 2 questionnaires which were distributed to 40 respondents related to the Facility Workshop development project located in Melak, East Kalimantan. The questionnaire analysis was assisted by the SPSS version 25 program. The analyzes used were Validity Test, Reality Test, Descriptive Statistical Analysis, Normality Test, Multiple Regression Test, T Test and F Test. From this study, the factors causing delays based on descriptive statistical analysis that meet the requirements of the T-test are material factors (X1), with the indicator "Incorrect material delivery schedule (X1.2)" then supported by the results of multiple linear regression analysis with coefficient positive regression, meaning that there is a significant effect between variables and project delays.
Co-Authors Agus Supiyat Aji Tri Setiadi Akhsan, Muhammad Aseanto, Resi Darma, Edifrizal Egar Albert Fertilia, novika Galen Tanjung Hamonangan Girsang Hasdian, Elhazri Imbuh Rochmad Irriene Indah Susanti Isma Shofa Mufida Mirnayani, Mirnayani Muhammad Akhsan Noviawati Puspita Novika Candra F Novika Candra Fertili Novika Candra Fertilia Refianda Eki Putra Stefanus, Stefanus Tanjung, Galen Tri Wahidi Wilhelmus Tarigan Yunita Dian Suwandari