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Prihatin Oktivasari
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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 5 Documents
 1 
Search results for , issue "Vol. 22 No. 2 (2023)" : 5 Documents clear
MODEL PROSES PRODUKSI KEMASAN BERBASIS OFFSET PRINTING Zulkarnain; Novi Purnama Sari; Dianta Mustofa Kamal; Muhammad Asrol
Jurnal Poli-Teknologi Vol. 22 No. 2 (2023)
Publisher : Politeknik Negeri Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32722/pt.v22i2.4578

Abstract

The need for packaging is currently increasing, providing opportunities for the development of the packaging printing industry, especially offset printing-based printing. This study aims to analyze the flow of the production process in the offset printing industry that produces packaging. This study uses a descriptive qualitative method to analyze the running of the production process which consists of pre-print, print, and post-print. The results showed that the results of the packaging printing production process at each stage were strongly influenced by the previous stage.
ANALISIS DAYA DUKUNG PONDASI DENGAN METODE REESE & WRIGHT (1977) DAN SKEMPTON (1966) Yelvi; Tulus Sebastian Gerraldo; Dio Akbar Hakim
Jurnal Poli-Teknologi Vol. 22 No. 2 (2023)
Publisher : Politeknik Negeri Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32722/pt.v22i2.5053

Abstract

Bridge has a structural load from above which is supported by the foundation. The foundation has an important role to holding the load from the superstructure. Therefore, planning the foundation, the bearing capacity must be taken into account so the foundation should withstand the load. In the Bengkulu – Taba Penanjung toll access road construction project, bored piles are used. To determine the bearing capacity of the foundation, NSPT soil data is needed for analysis needs. Based on the results of the bearing capacity analysis, the value of 382 tons with the Reese & Wright method and 349 tons with the Skempton method at a depth of 14 m was obtained. With a 7 x 2 pile configuration, an average efficiency value of 85% is obtained. With this efficiency value, the group pile bearing capacity is 4538,22 tons (Reese & Wright) and 4147,47 tons (Skempton). With the group's pile bearing capacity, the pile is considered capable of withstanding the axial load of the superstructure of 2391.21 tons. The amount of immediate settlement that occurs in a single pile is 13.72 mm using the Vesic method (1977). This reduction is safe where the settlement limit is 65 mm according to Skempton and Mc Donald. Because the dominant soil is clay, the value of the decrease in primary consolidation that occurs is 5 mm. Thus, the drill pile foundation with a length of 14 meters and a total of 14 piles with a configuration of 7 x 2 piles can be said to be feasible and can withstand the axial load transmitted to the drill pile foundation.
PENENTUAN BILANGAN REYNOLD DAN FROUDE, REDESIGN ZONA SEDIMENTASI RECTANGULAR DENGAN PLATE SETTLER DAN TUBE SETTLER, WATER TREATMENT PLANT (WTP), KAWASAN INDUSTRI DAN PERUMAHAN “X”, KABUPATEN BEKASI Aris Dwi Cahyanto; Ilyas Nur Ilman; Armen Putra
Jurnal Poli-Teknologi Vol. 22 No. 2 (2023)
Publisher : Politeknik Negeri Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32722/pt.v22i2.5268

Abstract

Sedimentation is the separation between solids and solutions with the force of gravity. To improve the performance and efficiency of sedimentation tanks, it can be done by adding a device, namely pseudo base, plate settler, or tube settler. The purpose of this study is to modify rectangular sedimentation zones with plate settlers and tube settlers in the Water Treatment Plant (WTP) and analyze the flow that occurs in the sedimentation zone by examining Reynold numbers (NRE) and Froude numbers (NFR). To achieve this goal, the authors conducted field observations on the sedimentation unit in the Industrial Water Treatment Plant and "X" residential area of Bekasi Regency. The results obtained are the optimal type of tube settler, hexagon cross section tube settler using the height of the tube settler (Htube) 2.5 meters, the slope angle of the tube settler (α) 30°, and the diameter of the tube settler (w) 0.05 meters. Increased discharge from the initial capacity of 170 lps to 510 lps resulted in changes in flow conditions that occur. Changes in flow from turbulent to laminer are indicated by changes in Reynold numbers (NRE) from over 2000 to less than 2000, and Froude (NFR) numbers have met the design criteria of less than 10-5. The investment cost for adding a tube settler is Rp. 760,000,000.00 with a return on investment or a Payback Period (PP) for 8,38 years. The Reynold number (NRE) indicates the type of flow that occurs is laminer, transition, or turbulent. While the Froude number (NFR) indicates the type of flow whether a short flow occurs or not. For field application, the tube settler that can be used is to consider the height aspect of the tube settler (Htube), the slope angle of the tube settler (α), and the diameter of the tube settler (w), and the type of cross section of the tube settler
ANALISIS HOTSPOT STRESS PADA SAMBUNGAN TUBULAR BRACE T DENGAN SIMULASI PEMBEBANAN TARIK PADA STRUKTUR BANGUNAN LEPAS PANTAI TIPE JACKET PLATFORM. Anwar; Rudi Siswanto
Jurnal Poli-Teknologi Vol. 22 No. 2 (2023)
Publisher : Politeknik Negeri Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32722/pt.v22i2.5535

Abstract

Abstract The jacket platform type offshore building structure is a building that is often used for oil and gas exploitation activities, environmental loads such as wave loads that occur continuously can cause the offshore building structure to experience fatigue. Tubular joints are areas that often experience fatigue or cracking due to stress concentrations that occur in the tubular joints. This research was conducted to find out and calculate the greatest stress points that occur in tubular joints for the T-brace model. The results showed that the hotspot stresses occurred in the elements in the welding area of the joints with a working stress value of 1577.3 Mpa and a value for calculating N integration of 12704.87. Keywords: Hotspot Stress, Tubular Joint, T Brace
PERANCANGAN DESAIN KEMASAN MAKANAN YANG REPRESENTATIF DAN FUNGSIONAL BAGI PENGGUNA Susilawati S Thabrany; Rachmadita Dwi Pramesti; Resti Dyah Kusumaasri; Maryam Halimah; Sari Rahmawati; Yudha Sujud Pranyoto
Jurnal Poli-Teknologi Vol. 22 No. 2 (2023)
Publisher : Politeknik Negeri Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32722/pt.v22i2.5636

Abstract

Packaging design as a food container as well as brand identity, has a big influence on its users. Packaging is designed based on the needs and preferences of the target market or users in order to represent the product and fulfill the functionality of the packaging. Therefore, the purpose of this research is to design a representative packaging design so that it can be used as a food container with features that make it easy for the user and have a good impact on the environment. The research method uses a descriptive qualitative approach with design stages starting from idea preparation to prototype testing. The test results of the structural design and surface design elements of the packaging are analyzed to obtain a final conclusion regarding the suitability and usability of the product and its users. The results of the study show that functional packaging is a box-shaped package so that it can be easily stored when the user cannot finish his food. Besides that, the selection of illustrations for the atmosphere while eating can also represent the type of food and the interactions that occur when eating using the box packaging design.

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