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INDONESIA
JURNAL POLI-TEKNOLOGI
Published by Politeknik Negeri Jakarta
ISSN : 14122782     EISSN : 24079103     DOI : https://doi.org/10.32722/pt.v20i1
Core Subject : Science, Engineering,
Aerospace Engineering Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Transportation
Poli-Teknologi Journal is a journal, which began publication in 2002, published by the Research and community service Unit of Politeknik Negeri Jakarta. It starts from Volume 1 Number 1 in January 2022 for printed version; ISSN (print) 1412-2782 and ISSN (online) 2407-9103. Poli-Teknologi Journal is a series of scientific publications in applied science and technology area from the perspective of a multi and interdisciplinary studies and it is published 3 times in year.
Arjuna Subject : Teknik (semua kategori) - Teknik (Lain-Lain)
Articles 410 Documents
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KINERJA BETON SELF COMPACTING CONCRETE DENGAN BAHAN TAMBAH LIMBAH PET Raka Kana Pila; Amalia; Jonathan Saputra
Jurnal Poli-Teknologi Vol. 21 No. 1 (2022)
Publisher : Politeknik Negeri Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32722/pt.v21i1.3341

Abstract

Self Compacting Concrete (SCC) is only has high flow and pass abilities at the formwork and reinforcementsystems, but also no required vibration work for compaction. This research aims to investigate the physicaland mechanical behavior of fresh and hard concrete. This research was arranged by making SCC concretespecimens with an initial 0.3 according to ACI 211.4R- 93, and statistical methods of regression with SPSS.Objects were tested using a polyethylene terephthalae (PET) variation of 0%, 0.30%, 0.50%, 1.00% and0.8% superplastisizer. The physical behavior of the concrete SCC which were tested consists of flowability,passing ability, binding time and weight. For the mechanical behavior of concrete SCC which were testedconsists of compressive strength, split tensile strength, tensile strength, and elastic modulus. The results ofthis research indicate that the use of PET in SCC can increase the passing ability by 0.92, PET can increasethe weight value of SCC up to 1.16%. SCC binding time with 0.50% PET has the fastest binding time of232 minutes. The compressive strength of concrete using 1.00% PET at the age of 3, 7, 14, and 28 dayshad the greatest value. The split tensile strength of 1.00% PET has the largest value, spesifically 2.48 Mpa.In the flexural tensile strength test, the use of 0.50% PET and 1.00% PET increased the flexural strengthby 6.45% -17.37% compared to the flexural strength at 0% PET. The modulus of elasticity increased in allvariations of PET by 8.34% -25.08% compared to SCC without PET. Based on testing the quality of freshconcrete and hard concrete, the optimum variation in the use of PET is 1.00%Keywords: Compressive strength; PET; SCC
OPTIMALISASI UKURAN BLEED TERHADAP JUMLAH KATERN RUSAK DAN KEBUTUHAN KERTAS Anugerah Putera Nureko; Endang Yuniarti; HB. Rudi Kusumantoro
Jurnal Poli-Teknologi Vol. 21 No. 3 (2022)
Publisher : Politeknik Negeri Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32722/pt.v21i3.3790

Abstract

The use of bleed size in the book production process greatly affects the quality of the product. Bleed size serves as a measure of tolerance given when placing the book layout on 1 sheet of katern so that the size of the finished product is met. Reducing the size of the bleed will result in the resulting page fold (katern) being rejected. However, if the size of the bleed is too large, it will result in high paper costs. This will also result in losses for the company. The aim of this research is to get the optimal bleed size that produces the least reject products. The results showed that the optimal size of the bleed on matt paper (120 gsm) paper was 8 mm. Because this measure produces the least amount of damaged material that is close to the standard, namely 20% of the production circulation. The paper requirement for 8 mm bleed is 18.92 reams or 635.3 kg with a paper size of 61x92 cm.
SISTEM BANTUAN KEMUDI KENDARAAN ALAT BERAT JARAK JAUH Sonki Prasetya
Jurnal Poli-Teknologi Vol. 21 No. 2 (2022)
Publisher : Politeknik Negeri Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32722/pt.v21i2.4066

Abstract

Heavy equipment vehicles for transporting goods such as forklifts are often used to assist human activities. These electric-based devices use batteries as their energy storage. Technological developments, especially in the field of control and the effects of the COVID-19 pandemic, make it possible for this tool to be driven remotely. However, remote control sometimes makes it difficult for operators to respond quickly to driving. The data shows that the use of heavy equipment causes many accidents in the work environment, mainly due to human factors, especially fatigue. To overcome this, several systems were added to help reduce work accidents. One of the tools that can help the driver is a braking system with Advanced Driver Assistance Systems (ADAS). This system aims to assist the braking system, especially when the driver is negligent. Utilization of a stereo camera to recognize objects in front of the vehicle so that it can brake automatically. The economical stereo camera using the Kinect is designed for its application to indoor moving applications. Recognition and classification of objects using the Artificial Neural Network Detection method with this tool will make the system give a braking signal to the vehicle automatically. The test results show that braking can process data at a speed of less than 350 milliseconds with an average accuracy of above 90%.
PERBANDINGAN BOQ TULANGAN ANTARA METODE KONVENSIONAL DENGAN BIM APARTEMEN “X” Tasya Putri Artanti; I Ketut Sucita; Erlina Yanuarini
Jurnal Poli-Teknologi Vol. 21 No. 1 (2022)
Publisher : Politeknik Negeri Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32722/pt.v21i1.4140

Abstract

When modeling buildings and calculating quantity, changes in the drawings often result in changes to the calculation quantity. Calculations Quantity using conventional methods still uses the area or volume formula to get the volume of work. The volume of work calculated using conventional methods is sometimes inaccurate because it often uses assumptions in its calculations. In this case, it is necessary to develop information technology that integrates modeling and calculations quantity. Building Information Modeling (BIM) is a technology that can model buildings and provide information such as the quantity of the building modeling results. The BIM method is entirely accurate in planning calculations and is expected to solve the problems that exist in conventional methods. This study aims to compare the Bill of Quantity of reinforcement using the conventional method and the BIM method where the author uses an analytical method with the help of Tekla Structures Software. Based on the research conducted, the percentage difference in Bill of Quantity using the BIM method has an average volume of 1.95% greater than the conventional method. This difference is due to an error when inputting data (human error) and is less accurate, such as not calculating the radius or bending of the reinforcement.
KAJIAN PENGARUH KEBISINGAN PROYEK KONSTRUKSI TERHADAP KENYAMANAN WARGA PERMUKIMAN SEKITAR Atma Noor Fitria; Wahyuni Susilowati; Jonathan Saputra
Jurnal Poli-Teknologi Vol. 21 No. 2 (2022)
Publisher : Politeknik Negeri Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32722/pt.v21i2.4141

Abstract

In the construction development process, activities such as clashes between work tools, formwork work, casting, and the use of heavy equipment have the potential to cause noise to the area around the project. This study examines the noise impact of Project X which is located close to a residential area. Noise is defined as sound that arises and is not desired but can interfere with health and comfort in the environment. This study aims to examine the effect of noise on the comfort of residents of surrounding settlements. The data were obtained by observation method, measurement with sound level meter, and questionnaire. This research refers to the Decree of the Governor of DKI Jakarta No. 551 of 2001, while the measurement method is adjusted to the Decree of the Minister of the Environment No. 48 of 1996. The results showed that most of the noise measurements exceeded the noise quality standard up to 68.45 dB(A). Simple regression analysis gives the regression equation Y = 30.811 – 0.445X, meaning that project noise has a negative effect on the comfort of residents. Hypothesis testing supports the results of simple linear regression by concluding that project noise has a significant negative effect on the comfort of residents.
R Rancang Bangun Filter Air Cetak Untul Lab Hidrolika Ida Zuraida; Wattini Wattini; Nizar Nizar; Harun Rasidi
Jurnal Poli-Teknologi Vol. 21 No. 1 (2022)
Publisher : Politeknik Negeri Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32722/pt.v21i1.4299

Abstract

Clean water is a basic requirement of the Hydraulics Laboratory for experimental/practical applications. Sometimes the water used has decreased in quality because it is often used repeatedly, making the water smelly and cloudy. Therefore it needs to be discarded or replaced. So that the use of clean water is not wasteful, a printed water filter is designed for the purpose of purifying and saving water use. The initial stage is to design, then make a printed water filter model without using water filter materials in general. The next stage is the function test, whether it is successful or not, able or not to purify the water. The test results are then re-evaluated until the highest percentage of functional success is obtained. The final stage of the research is to test the functionality and test samples. Testing of water quality samples that pass through the printed water filter is compared with raw well water samples. The results of laboratory tests of water quality are then analyzed and a conclusion is drawn, how much is the percentage of clarity, the higher the percentage, the higher the water quality. The research target is a printed water filter model that can be applied especially to the Hydraulics Laboratory and a wider target that can be applied by all levels of society, and the clean water supply industry. The advantages of this filter are that it is easy to make by all walks of life, the design is simple and the materials are also easily available wherever we are, whether in the city or in the village. Keywords : Design, Filter, Water, Recycle.
ANALISA PERBANDINGAN KUAT TEKAN BETON PASIR QUARRY MAMUYA TOBELO DENGAN PASIR QUARRY MALANU KOTA SORONG Wennie Mandela; Stefany Margareta
Jurnal Poli-Teknologi Vol. 21 No. 1 (2022)
Publisher : Politeknik Negeri Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32722/pt.v21i1.4321

Abstract

Some of the sand quarry in Sorong City is used by the community in construction work, one of which is the Malanu sand quarry to build houses and shops. Structural work that requires concrete quality above f'c25 MPa using sand from outside the city of Sorong such as from Mamuya Tobelo, of course requires a large amount of cost and longer mobilization time. The purpose of the study was to determine the comparison of the compressive strength of the concrete produced using Tobelo Quarry sand and Malanu Quarry sand and to determine the characteristics of the two types of sand. The research method is an experimental research conducted in a laboratory. The results of the examination of the characteristics of the fine aggregate material of Malanu sand have a mud content value of 7.60%, including coarse sand (gradation 1), a surface dry density value of 2.88 and a water absorption value of 2.15%. The fine aggregate of Tobelo sand has a mud content value of 3.80%, including fine sand (gradation 4), a surface dry density value of 2.62 and a water absorption value of 1.69%. The average compressive strength value of the concrete cylinder uses Malanu sand, the age of 7 days is 10.95MPa, the age of 14 days is 15.10 MPa and the age of 28 days is 17.17MPa. The average compressive strength value of concrete cylinders uses Tobelo sand, the age of 7 days is 13.02MPa, the age of 14 days is 17.17MPa and the age of 28 days is 20.00 MPa. The compressive strength of the concrete cylinder using Tobelo sand is greater than the compressive strength of the Malanu sand concrete cylinder with the difference in the compressive strength value for the age of 7 days 18.90%, age 14 days 13.70% and age 28 days 16.48%.
ANALISIS PENGGUNAAN PHOTOVOLTAIC DAN PEMBEBANAN PADA BANGUNAN USAHA MIKRO KECIL MENENGAH Harry Miswar; A Tossin Alamsyah; Asrizal Tatang
Jurnal Poli-Teknologi Vol. 21 No. 3 (2022)
Publisher : Politeknik Negeri Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32722/pt.v21i3.4428

Abstract

The growth of the business world is currently growing rapidly, so the use of energy is also getting higher and the costs are not small. This study aims to carry out load analysis and PV planning towards energy efficient buildings at PT PSI. The method used in this research is survey method, documentation and literature study. Primary data is obtained from the 2020 Electricity Bill. The primary data is used to calculate the load requirement of the bending tool. The results showed that the power requirement of the bending tool was 7.4 kw/day or 59,888 kw per month with 47 PV designs with a capacity of 385 wp/unit producing 18.06 kw/day or 542 kw/month. Electrical energy savings per month is IDR 891,048 or IDR 10,692,576 per year with 47 units of 385 wp PV capacity.
Jurnal ANALISA SIFAT FISIS AGREGAT LIMBAH BAHAN BAKAR BATU BARA DAN PEMANFAATANNYA UNTUK BAHAN BANGUNAN NON STRUKTUR Satriyo Utomo; Indah Rosanti; Akhmad Muhtadi; Hartanto Wahyu Sasongko
Jurnal Poli-Teknologi Vol. 21 No. 1 (2022)
Publisher : Politeknik Negeri Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32722/pt.v21i1.4430

Abstract

Physicality tests conducted in this study are: filter analysis test, water content test, mud level test, type weight test and absorption and organic level test. For testing of non-structural building materials in the form of Bricks and Paving Blocks. The manufacture of brick test objects and paving blocks uses two aggregates, namely from coal fuel waste and from natural sand. The results of physicality testing illustrate that coal fuel waste aggregates have lighter content weight, coarse grain and have a large absorption than natural sand. Testing of sludge levels and the organic content of natural sand and coal waste aggregates both did not meet quality standards for fine aggregates. The results of the quality testing of paving blocks and bricks get a rebound reading that is close to the same. For dry weight and ssd weight paving blocks and bricks from coal fuel waste is lighter than natural sand.
EFEK KENAIKAN SUHU DAPUR INDUKSI ELEKTROMAGNETIK ALTERNATOR TERHADAP PERUBAHAN RESISTANSI LILITAN STATOR Parlindungan Pandapotan Marpaung
Jurnal Poli-Teknologi Vol. 21 No. 2 (2022)
Publisher : Politeknik Negeri Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32722/pt.v21i2.4506

Abstract

In this study, the design of the ac power plant equipment using an alternator derived from a motorcycle was carried out to produce an ac output voltage in the stator coil winding based on the electromagnetic induction process. The problem is that the ac output voltage flows rotary current or eddy current through the coil windings causing heat in the core plane which is in the alternator electromagnetic induction furnace. The initial condition of the electromagnetic induction alternator temperature is Tind(awal) = 30 oC, coil resistance Rt(awal) = 1.28 ohms and ac output voltage Vo(awal) = 12.68 volts. The research method was carried out by increasing the Tind parameter initial causing the effect of increasing the resistance of the conductor coil winding material as the output voltage decreased. The specification of the temperature coefficient of the coil conducting conductor is 0.0291 oC-1 the temperature increase of the electromagnetic induction alternator is Tind. 62 oC causes the effect of increasing the coil resistance as the output voltage decreases to Vo(temp.) = 7.68 volts ac. This decrease in the ac output voltage of the alternator causes the electricity supply to the automotive electrical load to become ineffective and inefficient. Keywords: alternator ; electromagnetic induction ; coil windin ; temperature coefficient ; initial conditions

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