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All Journal Jurnal Teknik Sipil
Rafie Rafie
University Of Tanjungpura
Civil Engineering, Building, Construction & Architecture

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MATERIAL SUPPLY ESTIMATION USING THE ECONOMIC ORDER QUANTITY (EOQ) METHOD IN THE PUSKOPCUINA BUILDING PHASE I PONTIANAK CONSTRUCTION PROJECT Annisa Nurul Pasyah; Syahrudin Syahrudin; Rafie Rafie
Jurnal Teknik Sipil Vol 23, No 2 (2023): JURNAL TEKNIK SIPIL EDISI MEI 2023
Publisher : Fakultas Teknik Universitas Tanjungpura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26418/jtst.v23i2.62766

Abstract

Seeing the rapid development of the construction world, as part of the Indonesian economy, we need to support the growth of various facilities and infrastructure. In its growth, it must also improve its quality in all respects. In this case, material management plays an essential role in the construction process. The method chosen for this problem is the Economic Order Quantity (EOQ) method. The most economical amount of inventory can be determined by calculating the Economic Order Quantity (EOQ) method. This economical amount of stock can invest embedded in inventory materials, not excessive, so that it does not experience waste.
FINANCIAL FEASIBILITY ANALYSIS OF THE PONTIANAK STATE CATHOLIC RELIGIOUS COLLEGE (STAKATN) SANTA MARIA LECTURE BUILDING PROJECT Nina Septia Lestari; Lusiana Lusiana; Rafie Rafie
Jurnal Teknik Sipil Vol 24, No 2 (2024): Vol 24, No 2 (2024): JURNAL TEKNIK SIPIL EDISI MEI 2024
Publisher : Fakultas Teknik Universitas Tanjungpura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26418/jts.v24i2.78720

Abstract

In the era of globalization and rapid advancement in higher education, Indonesian institutions face challenges in providing adequate facilities to support learning. The State Catholic College of Pontianak (STAKATN) Santa Maria aims to address this by constructing a new lecture building. This study conducts a financial feasibility analysis of the project using Net Present Value (NPV), Benefit-Cost Ratio (BCR), Internal Rate of Return (IRR), Payback Period (PP), and Sensitivity Analysis. The analysis, based on a 25-year planning period, shows a positive NPV of IDR 12,949,362,911.15, an IRR of 9.36% (exceeding the discount rate of 5.1%), and a BCR of 1.231, indicating that the project's benefits exceed its costs. The Simple Payback Period is ten years, while the Discounted Payback Period is 14. Sensitivity analysis reveals that the project’s viability is at risk with significant decreases in benefits or cost increases. The project is financially viable, but careful management of risks and costs is essential for successful implementation. 
TIME COST TRADE OFF ANALYSIS ON PROJECT ACCELERATION WITH ADDITIONAL WORKING HOURS (OVERTIME) (CASE STUDY: BUILDING REHABILITATION PROJECT ON DEKRANASDA HALL OF WEST KALIMANTAN) Yasra Azzahra; Lusiana Lusiana; Rafie Rafie; Syahrudin Syahrudin; Safaruddin M. Nuh
Jurnal Teknik Sipil Vol 23, No 4 (2023): JURNAL TEKNIK SIPIL EDISI NOVEMBER 2023
Publisher : Fakultas Teknik Universitas Tanjungpura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26418/jts.v23i4.71535

Abstract

Acceleration on projects is frequently used when there is a mismatch between the actual and planned schedules. In addition, acceleration is frequently implemented in response to requests from the project owner to complete the project as quickly as possible to meet specific goals so that the building can be used immediately. The owner of the Dekranasda Building and Hall in West Kalimantan requested that the project be finished immediately so that the Dekranasda Building could be used as the location for a national UMKM exhibition event. The initial plan for this project was scheduled for 152 working days. Because there would be an exhibition event, the project was accelerated to 128 working days. The purpose of this research is to accelerate the project for 24 days. The stages of this acceleration analysis start from finding what activities can be softened, then compiling a network diagram to identify activities on the critical path, followed by crashing analysis to get crash duration, crash cost, and cost slope, then Time Cost Trade-Off analysis is carried out. This research uses the PDM (Precedence Diagram Method) method applied to Microsoft Project to compile a Network Diagram. The results of the acceleration analysis show that the crashing process is carried out until the 12th crashing to meet the target acceleration duration of 128 working days from the normal duration of 152 working days, and the usual 24-day length is shortened. Twelve tasks have been added, raising the overall project cost from Rp. 6,794,007,874 to Rp. 7,091,725,614 by a total of Rp. 297,717,741.
Co-Authors Annisa Nurul Pasyah Lusiana Lusiana Nina Septia Lestari Safaruddin M. Nuh Syahrudin Syahrudin Yasra Azzahra