Article Per Year (5 Year)
p-Index From 2021 - 2026
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All Journal Journal of Geoscience, Engineering, Environment, and Technology Journal of Scientific Research, Education, and Technology
Tumpu, Miswar
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Computer Science & IT Earth & Planetary Sciences Economics, Econometrics & Finance Education Engineering Environmental Science Physics Social Sciences

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Project Acceleration Analysis Using the Crashing Method with The Alternative of Additional Labor and Additional Working Hours in Drainage Work Thoengsal, James; Tumpu, Miswar
Journal of Scientific Research, Education, and Technology (JSRET) Vol. 3 No. 3 (2024): Vol. 3 No. 3 2024
Publisher : Kirana Publisher (KNPub)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58526/jsret.v3i3.479

Abstract

Project work delays often occur due to differences in site conditions, design changes, weather influences, and planning errors. The problem faced is the project duration, where if the project duration is accelerated or crashes, there will be several options to cut the project duration. This is the problem that becomes the topic of the thesis/journal, namely "Analysis of Project Acceleration with the Crashing Method with Alternatives for Adding Manpower and Additional Working Hours in Drainage Works". The author uses the primary method, with sources of RAB, Time Schedule, working drawings and analysis of city unit prices. As well as secondary research methods with sources, from relevant books, and project data such as price lists and wages. From the results of the study it can be concluded that the total wages of workers under normal conditions is IDR. 16,864,000.00 with the duration of project work for 30 working days. From the results of the analysis in this study, the total wages of workers with alternative labor additions of IDR. 19,672,000.00 with the duration of project construction work for 25 working days or 15.15% faster than the normal duration. Meanwhile, the total wage for workers with the alternative of additional working hours (overtime) is IDR. 25,052,300.00 with the duration of the project construction work for 25 working days or 15.15% faster than the normal duration. A more economical alternative to completing the project is the addition of manpower because it saves IDR. 2,228,000.00 from additional working hours (overtime), from normal wages.
Vehicle Operational Cost Analysis (BOK) of Mini Bus Light Vehicle Public Transportation: Case Study of Siwa-Palopo Route Thoengsal, James; Tumpu, Miswar
Journal of Scientific Research, Education, and Technology (JSRET) Vol. 4 No. 1 (2025): Vol. 4 No. 1 2025
Publisher : Kirana Publisher (KNPub)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58526/jsret.v4i1.727

Abstract

Land transportation, especially public transportation between cities, is very important in carrying out oneof its main functions, namely as a means of transporting people to carry out their daily activities wherethe services provided are expected to be carried out quickly, safely, comfortably, cheaply and efficiently.The puIDRose of this study was to determine the value of vehicle operating costs (BOK) for the Siwa-Palopo route using data collection methods by means of surveys and direct interviews with publictransportation operators. Based on the analysis of research data from the results of the IntercityTransportation Within the Province (AKDP) route Siwa - Palopo, the following conclusions were drawn;Mini Bus Vehicle Operating Costs with a BOK value of IDR 158,730,866, - / Year or IDR 2,701.71, - / Km.The income of Mini Bus Vehicle Owners is IDR 207,360,000 / Year or IDR 3,529.41 / Km. From the resultsof the analysis of the data calculations above, it can be seen that public transportation owners get a netprofit of IDR. 48,629,134.1,-/year or IDR. 827.70,-/km. Where the income obtained by the transportationowner is greater than the Vehicle Operating Cost.
Application of Carbon Nanotube (CNT) to Improve Mechanical Properties of Concrete: A Comparative Analysis with Superplasticizer Sunarno, Yohans; Abduh, Natsir; Eka Yuniarto; Tumpu, Miswar; Nelfia, Lisa Oksri
Journal of Geoscience, Engineering, Environment, and Technology Vol. 10 No. 1 (2025): JGEET Vol 10 No 01 : March (2025)
Publisher : UIR PRESS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25299/jgeet.2025.10.1.19526

Abstract

Many researchers' interest in carbon nanotube (CNT) materials has grown as a result of their potential use in the construction industry. This is mostly related to the mechanical, electrical, thermal, kinetic, and chemical properties of CNT, which have a big impact on the way concrete functions. Hydrated calcium silicate is a complex network of binding particles that compose the cement composite material known as concrete. Since it has nanoscale features, CNT will interact most strongly with hydrated calcium silicate, improving the concrete's mechanical qualities. The purpose of this study is to ascertain the impact of adding CNT to concrete mixtures. Three distinct mixes were created by varying the types and amounts of admixtures that were added to the concrete mix.  Two mixed variations employed CNT at various doses, while one mixed variation used admixture type F (superplasticizer), and the performance of one was compared to the other. Concrete that was both new and hard underwent specimen testing. On fresh concrete, a slump test was conducted using ASTM C163, while for hard concrete, cylindrical specimens measuring 100 mm x 200 mm were tested for unit weight and compressive strength at 7, 14, and 28 days following ASTM C39. According to the test results, utilizing CNT at a lower dose than the typical superplasticizer dose leads to greater workability and compressive strength. The results of the workability and compressive strength tests will be improved by the inclusion of CNT.
Co-Authors Abduh, Natsir Eka Yuniarto Nelfia, Lisa Oksri Sunarno, Yohans THOENGSAL, JAMES