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Logic : Jurnal Rancang Bangun Dan Teknologi

LOGIC
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Published by Politeknik Negeri Bali

ISSN : 1412114X EISSN : 25805649 DOI : https://doi.org/10.31940/logic.v21i3

Civil Engineering, Building, Construction & Architecture Control & Systems Engineering Engineering Industrial & Manufacturing Engineering Mechanical Engineering

Logic : Jurnal Rancang Bangun dan Teknologi is a peer-reviewed research journal published by Unit Publikasi Ilmiah, Pusat Penelitian dan Pengabdian Masyarakat, Politeknik Negeri Bali, aiming at promoting and publishing original high quality research in all disciplines of engineering and applied technology. All research articles submitted to Logic should be original in nature, never previously published in any journal or presented in a conference or undergoing such process across the world. All the submissions will be peer-reviewed by the panel of experts associated with particular field. Submitted papers should meet the internationally accepted criteria and manuscripts should follow the style of the journal for the purpose of both reviewing and editing.

Arjuna Subject : Teknik (semua kategori) - Tenik Industri dan Manufaktur

Articles 73 Documents

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Design and Fabrication of a Fixed Bed Pyrolysis with LDPE Plastic Waste I Made Agus Putrawan; I Ketut Gde Juli Suarbawa; I Made Rajendra; INS Winaya
Logic : Jurnal Rancang Bangun dan Teknologi Vol. 21 No. 3 (2021): November
Publisher : Unit Publikasi Ilmiah, P3M, Politeknik Negeri Bali

This paper presents the design of a fixed bed reactor pyrolysis to convert plastic waste type LDPE into condensate oil. The dimensions of the batch type pyrolysis reactor are adapted to household needs and are designed to be easy to operate and transport. From the results at three different pyrolysis temperature variations; 250 oC, 275 oC and 300 oC shows that reactor yields a maximum condensate oil of 45,3wt% at temperature of 300 oC. In addition, the weight of charcoal also decreased along with the increase in operating temperature.

Mode Choice Probability Between Bus and Railway Cianjur-Padalarang Route Diah Eka Rahmawati; Eva Azhra Latifa
Logic : Jurnal Rancang Bangun dan Teknologi Vol. 22 No. 2 (2022): July
Publisher : Unit Publikasi Ilmiah, P3M, Politeknik Negeri Bali

Travel between cities in the Bogor, Sukabumi, and Cianjur areas is only accommodated by road-based public transportation that is interstate bus. The government issued a policy to reactivate railroads from Bogor to Padalarang, so that the southern region of West Java are connected to the rail network. This research intention to analyze characteristics of socio-economic users, characteristics of trip users, and analyze how much passengers move from the current bus to the Cianjur-Padalarang train. Data were collected by distributing questionnaires using stated preference techniques and analyzed using binary logit difference model with linear regression. The attributes to be analyzed are the difference between travel costs, travel time, and frequency of departure. The characteristic of users were analyzed with descriptive statictic method. The socio-economic characteristics of the passengers obtained were majority is male, aged 21-30 years old, education level senior high school, worked as entrepreneurship, income Rp2.000.001-Rp3.000.000, transportation costs for a month Rp100.001-Rp300.000. The characteristics of trip users are dominated by origin from Cianjur destination to Padalarang to work (economy), the frequency of trips is 1-2 times per week, the reason choosing the bus because of the bus have more easier mobility, the main travel time is 121-150 minutes. The results of the calculation of model sensitivity, the potential for passenger transfer from bus to train will increase if the difference in cost and travel time between trains and buses is getting smaller, and the difference in frequency is getting bigger.

ANALYSIS OF IMPLEMENTATION SUPPLY CHAIN MANAGEMENT MATERIAL PROCUREMENT EFFECT ON CONSTRUCTION PROJECT PERFORMANCE Mayda Pahinggis; I Ketut Sucita
Logic : Jurnal Rancang Bangun dan Teknologi Vol. 22 No. 2 (2022): July
Publisher : Unit Publikasi Ilmiah, P3M, Politeknik Negeri Bali

The implementation of material procurement supply chain management is very much needed by the construction industry to improve project performance. Supply chains can contribute to reduced costs, improve efficiency and improve the delivery of a material's final results promptly on time. So that it is expected to achieve the project objectives in accordance with the cost, quality and time. that had been planned. This research aims to determine the influence of the implementation of supply chain management of material procurement to the performance of construction projects and the biggest challenges in implementing supply chain management of material procurement. The analysis methods used in this study are descriptive methods and regression methods with quantitative approaches. Data collection techniques using a questionnaire and using a Likert scale. The number of respondents as many as 28 people selected from project employees with purposive sampling method. The results showed that the application of material procurement supply chain management characteristics had a positive and significant effect on the performance of construction projects by 39%. As well as the biggest factors that become challenges in implementing supply chain management of material procurement, namely the uncertainty of demand with an average of 2,797 and the smallest factor that becomes a challenge in implementing supply chain management of material procurement, namely internal uncertainty factor with an average of 2,202. Thus, from the results of the research, it is expected that the project can play a more active role in implementing supply chain management of material procurement to improve the performance of construction projects.

The Analysis of Type L Joint Precast Beam Concretea A. Rudi Hermawan; Eka Sasmita Mulya
Logic : Jurnal Rancang Bangun dan Teknologi Vol. 22 No. 2 (2022): July
Publisher : Unit Publikasi Ilmiah, P3M, Politeknik Negeri Bali

Research precast beam type L shape has produced strength of flexure where it was jointed at middle of span with L shape. Problem was about strength and deflection with joint of Type L shape. Aim of this research was determined strength of flexure such deflection and maximal load would be apllicated. Precast beam type L shape consist of two beam P1 and P2 were tested at two point load was applicated. This research have produced of data of precast beam P1 and P2. Precast beam P1 has deflection 28,44 mm at maximum load 11,21 Ton. Precast beam P2 has deflection 26,71 at maximum load 11,76 Ton. Except that data, has produced also chart of load versus deflection where precast beam type L shape has behavior less for ductility approximately du/dy 1,17, where deformation inelasticity was not seem. That occur because overlapping at joint of precast concrete at middle of span.

Performance Analysis of Signalized Intersection Due to Opening of Jatikarya Exit Access to Cimanggis – Cibitung Toll Segment Using PTV Vissim Software Reyhan Febrian Putra; Eva Azhra Latifa
Logic : Jurnal Rancang Bangun dan Teknologi Vol. 22 No. 1 (2022): March
Publisher : Unit Publikasi Ilmiah, P3M, Politeknik Negeri Bali

The development of infrastructure, especially road construction, also has an impact on changes in various urban systems in an area. Developments in the transportation system, including the opening of toll road access, will certainly affect increasing traffic flow. With the opening of toll road access, it creates new intersections so that the Cibubur Alternative Road experiences a high increase, especially during peak hours. This study aims to determine the effect of access to the Cimanggis-Cibitung toll road on the performance of the Cibubur Alternative Road. The study begins with collecting data according to the parameters needed as the basis for analyzing road performance, namely the degree of saturation and the level of service based on the 2014 PKJI by comparing the conditions and assumptions of normal conditions (by dividing 75% of the existing conditions). The results of the analysis show that the highest degree of saturation is on Alternative Cibubur Road 0.74 and if it is assumed under normal conditions it is 0.99 (the lowest service level is E with the lowest speed reaching 30.0 km/hour), queue length 194.47 meters and delays time. Reaching 109.87 seconds indicates a conflict at the signalized intersection because the queue length affects the performance of the Cibubur alternative road. After doing the simulation and getting an effective intersection optimization, namely resetting the green time with VISSIM software modeling, it gives better results during peak hours and reduces the highest queue length by 56,58% and delays by 80,16%.

Design and Construction of Crop Suitability Prediction System Using Fuzzy Logic Classifier Method Meli Gustina; Irma Salamah; Lindawati
Logic : Jurnal Rancang Bangun dan Teknologi Vol. 21 No. 3 (2021): November
Publisher : Unit Publikasi Ilmiah, P3M, Politeknik Negeri Bali

The potential of land in Indonesia which is quite large and has not been used optimally is one of the problems. this study focused on developing fuzzy logic models to predict plants that are suitable for planting on agricultural land to enable the land use more optimal. In conducting this study, there were two stages of implementation, namely hardware design, and software design which included system workflow design using the Fuzzy Logic Classifier method where three input variables were used, namely soil pH, soil temperature, and humidity. The findings of this study are in the form of predictions consisting of eight outputs, namely Unfavorable Land, Spinach, Cayenne Pepper, Beans, Long Beans, Cucumber, Eggplant, and Tomatoo. The prediction results generated were directly displayed on the LCD of the instrument that has been designed.

INFLUENCE OF SALINITY LEVELS ANALYSIS ON SETTLING VELOCITY OF FINE SEDIMENT GRAINS IN CILIWUNG ESTUARY: Salinity Levels on Settling Velocity of Fine Sediment Grains Tri Wulan Sari; Denny Yatmadi; Rommy Martdianto; Sujito
Logic : Jurnal Rancang Bangun dan Teknologi Vol. 22 No. 2 (2022): July
Publisher : Unit Publikasi Ilmiah, P3M, Politeknik Negeri Bali

Transport of estuarine sediment have a highly complex method, which is the combined effects result of periodically reciprocating flow, ocean waves, and the electrochemical characteristic of sea water [1]. Settling velocity (SV) is such a parameter fundamental for sediment researchers so that its accurate resolution has been regarded as a top priority in correcting modelling numerical and conceptual understanding of fine sediment dynamics [2] [3]. The goal of this study is to analyze the effect of salinity levels on the settling velocity of fine sediment grains in the Ciliwung estuary, Jakarta. The method used is direct measurement using the hydrometer analysis method. The result of experiment shows salinity levels affect the settling velocity of fine sediment grains in the Ciliwung estuary. The higher salinity, more faster the settling velocity of fine sediment grains. The average settling velocity at distilled water salinity 0 ppt is 1.083 mm/minute, sea water with salinity 0.3 ppt is 1.537 mm/minute, and sea water with salinity of 0.6 ppt of 1.561 mm/minute.

Auction Application for Beringkit Animal Traditional Market Based on Android I Gede Galang Surya Prabawa; I Nyoman Piarsa; Gusti Agung Ayu Putri
Logic : Jurnal Rancang Bangun dan Teknologi Vol. 21 No. 3 (2021): November
Publisher : Unit Publikasi Ilmiah, P3M, Politeknik Negeri Bali

Beringkit Animal Market is one of the large traditional animal markets in Bali which is famous for selling superior cows. In addition to selling superior cows, Beringkit Animal Market also sells dogs and various types of poultry such as chickens, ducks and roosters. However, in the midst of the COVID-19 outbreak, traditional markets are considered as the main cluster for the spread of COVID-19 due to the large number of interactions between buyers and traders. The implementation of Community Activity Restrictions (PPKM) has resulted in a lack of income for traders at the Beringkit Animal Market. This study aims to design an Android-based online animal auction application as a medium for buying and selling animals to minimize physical interaction between buyers and traders, the online auction transaction process is chosen because the auction transaction process can bring together traders and buyers in the same online media and make offers up to reach the highest agreed price. The research method applied is the DSRM method or Design Security Research Method, application development uses Android Studio to develop mobile applications, and uses Visual Studio Code to develop web-based systems. Data storage and web server management in this study using MySQL and Laravel. The results of this study are in the form of an Android-based animal auction application that can be used as a medium for transactions between buyers and traders who have gone through the blackbox testing process with the test results as expected.

APPLICATION OF COMMON DATA ENVIRONMENT (CDE) AS A METHOD OF DESIGN REVIEW IN CONSTRUCTION PROJECT Sabrina Ayu Lestari; Hari Purwanto; Jonathan Saputra
Logic : Jurnal Rancang Bangun dan Teknologi Vol. 22 No. 2 (2022): July
Publisher : Unit Publikasi Ilmiah, P3M, Politeknik Negeri Bali

Abstract. The development of technology in construction projects produces a method known as Building Information Modelling (BIM). Common Data Environment (CDE) is one of the cloud technology adoption systems that can effectively convey various data information from several BIM softwares without having to download the softwares. Searching for accurate project information according to the latest version takes a long time if the document or information is not well structured. This study aims to analyze the application of CDE to the project in the design review and to determine the criteria that affect the success of the implementation of CDE in the design review and the biggest obstacles in the use of CDE. This research was conducted using a survey method which was distributed to representative respondents. The results showed that the implementation of CDE as a design review on the project was in accordance with CDE standards with an average respondent's level of achievement of 83.28%. The most influential criterion on the success of CDE implementation in the design review is data security. The biggest obstacles are in the form of lack of cooperation between CDE users, undisciplined use, and data that is not always updated.

Risk Analysis of Investment Costs in PPP Projects Using Monte Carlo Simulation Roihans Muhammad Iqbal; Hari Purwanto
Logic : Jurnal Rancang Bangun dan Teknologi Vol. 22 No. 1 (2022): March
Publisher : Unit Publikasi Ilmiah, P3M, Politeknik Negeri Bali

Infrastructure project investment is a substantial urgency in line with the vision of President Jokowi’s administration of developing infrastructure in Indonesia. The Government and Private Sector partnership (PPP) becomes feasible alternative to cover the financial deficit in the provision of infrastructure. The South Jakarta-Cikampek II Toll Road Project has been determined to be operated under the PPP scheme. The identification, allocation, and appropriate risk mitigation of the projects are the important success keys to provide clarity and benefits for among the parties. The purpose of this study is to analyze 27 risk variables from PT PII guidelines qualitatively and quantitatively with probabilistic principles using Monte Carlo simulations, by then accurately to estimate the values of the effect of each risk on the project investment value. The research was carried out by collecting project data, identifying risk variables, questionnaires to experts, risk quantification, Monte Carlo simulation, calculating the effect and value of risk, as well as analysis of risk allocation and mitigation based on the Pareto Principle. The study shows that of 26 influential risk categories and one (1) risk does not affect the investment component of the project. There are 12 Risks could be allocated to the Government and 14 Risks could be allocated to Private Sector. The total value of the amount of risk cost is Rp16,424,331,645,796 (21% of total risk investment value). Based on Pareto, 30% risk categories (equal to 8 risks) are the dominant factors of which equal to 70% of the total value of risk. Hence the mitigation may focus to reduce the dominant factors to lower risk by then decrease the value of risk Rp9,885,627,136,618 that equal to 60% become Rp6.538.704.509.178 (equal to 40% of risk value).

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M. Yusuf

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logic@pnb.ac.id

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Unit Publikasi Ilmiah, P3M, Politeknik Negeri Bali, Jl Kampus Bukit Jimbaran, Badung, Bali, Indonesia

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Kab. badung,

Bali

INDONESIA

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Home Page

OAI Link

Editorial Team

Contact

Reviewer

Google Scholar

Contact Name M. Yusuf

Contact Email yusuf@pnb.ac.id

Phone +62361-701981

Journal Mail Official logic@pnb.ac.id

Editorial Address Unit Publikasi Ilmiah, P3M, Politeknik Negeri Bali, Jl Kampus Bukit Jimbaran, Badung, Bali, Indonesia

Location Kab. badung, Bali INDONESIA

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Contact Name
M. Yusuf

Contact Email
yusuf@pnb.ac.id

Phone
+62361-701981

Journal Mail Official
logic@pnb.ac.id

Editorial Address
Unit Publikasi Ilmiah, P3M, Politeknik Negeri Bali, Jl Kampus Bukit Jimbaran, Badung, Bali, Indonesia

Location
Kab. badung,

Bali

INDONESIA