Jurnal Ilmiah Poli Rekayasa
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PEMBUATAN WESTAFEL MINI OTOMATIS DENGAN MEMANFAATKAN KEMBALI AIR KONDENSASI AC
No full textThe current condition of Covid-19 requires washing hands with more intensity so that it requires more water. While the water from the condensation of the Air-Conditioner is wasted. So from that an automatic mini sink was made with the water source taken from the condensation of the Air-Conditioner. This sink is designed to make it easier to wash your hands without the need to touch the water tap and the soap. Automatic mini westafel is assembled with IR sensor, 1 channel 5 V relay, IC 7805, 12 V water pump, 12 V mini vacuum pump, 12 V 30 A 4 pin relay, and a 12 V adapter which functions as an automatic working system on water faucets and soap. Air-Conditioner condensation water with a power of 1 PK produces 8.8 L / day (8 hours of work) can be used to wash hands 35 times if once washing water is used 0.25 L. The construction of the automatic mini sink frame is designed using PVC material ¾ '' with the aim of making it easier for water to flow through the pipe frame.
Keywords: Design, automatic mini sink, Air-Conditioner condensatio
Analisis Kebutuhan Modal Kerja Kontraktor Berdasarkan Sistem Pembayaran di Gedung Rawat Inap Rumah Sakit Sanjiwani Gianyar
Full text linkA construction project is a series that is only implemented once and is generally short-term, with limited resources. Before the implementation of a construction project runs, it usually starts with the preparation of a work plan and a project implementation time (time schedule). The realization of work plans in the field often experiences delays in the process, because revenue realization is very much determined by the selection of the payment system used by the contractor which will affect the project cash flow (cash flow), the amount of working capital required, the progress of a job, and to determine policy alternatives. that needs to be done so that the project does not experience a deficit. This study aims to determine the payment system that requires less working capital and benefits the contractor in terms of project benefits. The analysis uses 2 alternative policies carried out by the contractor during the project, alternative 1 by making a loan to the bank and alternative 2 with a material payment policy. From the results of this research analysis, it is found that the MC payment system does not require working capital because the project cash flow condition is always a surplus, while the term payment system requires working capital in the form of a bank loan of IDR 410,000,000.00 so that the project cash flow condition does not experience a deficit, as was done. on policy alternatives 1
Pengaruh Penerapan Kebijakan Sistem Manajemen Keselamatan Dan Kesehatan (SMK3) Terhadap Kepuasan Kerja Tenaga Kerja Pada Proyek Kantor Perwakilan Bank Indonesia Provinsi Bali
Full text linkThis study aims to determine how much effect the implementation of SMK3 policies on workforce satisfaction in construction projects. In this study using descriptive quantitative research methods. The data collection method used a questionnaire that was distributed to the project workforce using 25 people as a sample. The research instrument test used the validity test, reliability test, multicollinearity test, and probability plot normality test, while the data analysis method used multiple linear regression analysis, F test and t test. The research results can be concluded as follows. First, the SMK3 policy variable that has the most dominant influence on workforce job satisfaction is the variable of implementing the K3 plan. Second, the SMK3 policy variables, namely, the establishment of OHS policies, OHS planning, implementation of K3 plans, monitoring and evaluation of K3 performance, and reviewing and improving SMK3 performance have a joint effect on job satisfaction of workers in the project
Optimalisasi Waktu dan Biaya dengan Metode Time Cost Trade Off Pada Proyek Konstruksi Jalan
Full text linkDuring the implementation of project work, there are various kinds of problems that will hinder project performance, so that the project will not be completed as planned, whether it is not on time, quality, and the cost, which sometimes occurs swelling. The road widening project for Lubuk Alung - Kuraitaji Road, Padang Pariaman District experienced a delay in implementation in the 16th week with a deviation of -7.091%. For this reason, it is necessary to control project implementation using the earned value method. From the analysis, the total duration of the project is 170 days, while the contract time is 150 days. This indicates a delay in project implementation for 20 days. In order to keep the project duration in accordance with the contract duration, it is necessary to accelerate it using the Time Cost Trade Off method. Acceleration is done by comparing 2 alternatives, namely the addition of working hours (overtime) and additional work shifts. After the comparisons were made, the additional acceleration cost of overtime work hours was Rp. 1,676,510,600.23 and alternative work shifts of Rp. 307,721,835.6 for direct costs. So the alternative chosen is an alternative work shift, because it has a small incremental cost, and is more efficient than using an alternative working hour overtime, while the duration of the project completion has returned to the contract time. The additional cost that must be paid by the contractor if the acceleration is not carried out is IDR 1,013,632,840.6, it would be more appropriate if the acceleration was carried out to overcome the delays in the Lubuk Alung - Kuraitaji Road Section in Padang Pariaman Regency, with a loss of IDR 307,722,00
PENGENDALIAN PERANGKAT ELEKTRONIK BERBASIS MIKROKONTROLLER DENGAN ANDROID
Full text linkThe very rapid development of technology and the high level of human innovation have made the emergence of increasingly sophisticated technological products, one of which is the MCU node, a microcontroller system that has been integrated with various electronic modules and by using the C++ programming language, the automatic smart home control system, is one of the technological advances in the field of mechanics and electronics, both digital and analog, by integrating a smartphone as a remote to turn on and turn off certain electrical equipment using the MCU node as the main control and a link between smartphones. Remote application smart home as a media user interface for giving commands via the smartphone which will be executed by the MCU node and then the relay which will execute the electrical equipment installed at hom
EFISIENSI BIAYA PROYEK MELALUI PERUBAHAN DISAIN PADA PEKERJAAN FINISHING KAYU
Full text linkProject cost efficiency can be done in things such as value engineering. The value engineering process can be carried out at the conceptual, planning and implementation stages of the project. Design changes also have an impact that affects the performance of construction implementation. Currently wood material is still widely used for finishing work, such as the roof of a pergola, room dividing walls, or just as a glass clamp. This research uses quantitative descriptive analysis, which begins by calculating the volume of work, determining the coefficient of wood material, compiling a unit price analysis, calculating the budget for existing designs and changing designs, making comparisons between the two designs. The unit price of the existing design for a room dividing work with 30x50 mm wood including a frame with 50x70 mm wood is IDR 2,597,451 per m2. For roof work, timber lattice pergola with 40x60 mm wood is Rp. 848,726 per m2, and grilling work for lattice with 40x60 mm wood is Rp. 777,070 per m2. The total budget for the existing design is Rp. 335,303,754.84. The total cost budget with the design change is IDR 289,335,447.58. The cost efficiency between the existing design and design changes is IDR 45,968,307 or 15.90
(MOLDING DESIGN OF PADANG STATE POLYTECHNIC LOGO SOUVENIR MOLDING ON PRESSED PLASTIC INJECTION MOLDING MACHINE 1,960 KG / CM²)
Full text linkABSTRACT
Padang State Polytechnic has been established since 1987 under the name Polytechnic Engineering and then changed its name several times to the management policy by Andalas University then, until now it is independent until now with the name Padang State Polytechnic. The 33-year-old polytechnic of the Padang State Polytechnic establishment must have an icon, symbol and trinkets that have PNP characteristics so that they are easy to recognize and remember. Souvenirs are a form of applying media for promotion and souvenirs for people who already know and come to Padang State Polytechnic.
Plastic injection molding machine is a machine used to mold plastics with a basic material in the form of plastic pellets. Plastic injection molding machine is the process of processing plastic material in the form of seeds which are heated until they become liquid and then injected into the molding which then freezes / hardens according to the shape of the mold. The products produced by injection molding machines vary, from electronic tools, automotive tools, home appliances, plastic souvenirs, to tableware. The success of the resulting product is highly dependent on Molding. The plastic injection molding machine has parts, namely the Injection Unit, Molding Unit and Clamping Unit. The Injection Unit and Clamping Unit are the most important parts in the manufacturing process of plastic products where the control operation is executed on the control panel found on the plastic injection molding machine. The control panel on the machine can adjust the amount of clamping pressure, stroke length, plastic volume, and temperature used.
The molding unit is the main part of the plastic product manufacturing process. Mold (mold) is a tool / tool used to make products according to the desired design (shape and dimensions). Plastic molding has its respective functions, parts of the mold, namely Cavity and Core, Sprue, Runner and Gate, Undercut. The printing process on a Plastic Molding machine has several stages such as the cutting process, mold safety and machine safety, execution, product check, setting, execution, and final. Materials used in the Plastic Molding process are usually materials that are often used daily and are safe for use by all groups, such as Polyproplene, Polycarbonate, and High Density Poly Ethylene. The product that will be produced from the molding made is a key toy souvenir made of plastic, with a shape like the Padang State Polytechnic logo, measuring 6 cm long, 6 cm wide and 5 mm thick.
The test results obtained will be shown through field applications, socialization at the Padang State Polytechnic and writing in national journals are the targets and outputs of this novice lecturer research activity.
Keywords— Mold, Souvenir, Cavity, Core, Pnp
Perancang Alat Sistem Monitoring Volume Air Pada Tangki Air Berbasis Telegram Dengan Mikrokontroler NodeMCU
Full text linkAt this time the world is experiencing a Covid-19 outbreak which has resulted in all activities being restricted and must implement health protocols to prevent the transmission of the corona virus. One of these health protocols is washing hands regularly. Padang State Polytechnic is an educational institution that applies health protocols by providing water tanks in several places so that everyone who comes to Padang State Polytechnic can wash their hands easily. The water tank available at the Padang State Polytechnic does not have a specific schedule for filling it. This causes the officer in charge to always check the condition of the water tank. At the Padang State Polytechnic, the number of water tanks available is not small. Periodic inspection of the water tank becomes ineffective and causes not all of the water to be fully filled or that there is also a tank that is not filled. Therefore, the Water Volume Monitoring System tool in a Telegram Based Water Tank with a NodeMCU Microcontroller can make it easier for officers to monitor the state of the water via telegram so that the water tank monitoring process at Padang State Polytechnic becomes more effective. The water volume monitoring system tool is built with NodeMCU Microcontroller technology and the Telegram application to check notifications
Analisa Erosivitas Lahan Pada DAS Batang Agam Dengan Menggunakan Model SWAT
Full text linkBatang Agam River is a river that flows along Bukittinggi City, Agam Regency, Fifty Cities Regency, Tanah Datar Regency, Payakumbuh City and empties into the Batang Sinamar River. The Batang Agam River, which crosses the residential area, is mostly used for agriculture, fisheries, tourism, mining and other activities. Community activities in the area of the Batang Agam River have resulted in a decrease in the function of the river which is characterized by narrowing, silting and pollution of the river. In addition, it is influenced by the ever-changing river water discharge, land conditions and changes that occur in the river channel. In addition, the negative behavior of the community and all their activities around the river basin also triggers damage to the river. This research was conducted to determine the value of land erosivity towards changes in land use area in the Batang Agam watershed, in this study using land cover in 2010, 2014, and 2019 using the Soil and Water Assessment Tool (SWAT) model and manual calculations were carried out using the USLE method as ratio. The analysis consists of four processes, namely watershed delineation, formation of a Hydrologic Response Unit (HRU), formation of climatological data, and finally the simulation process. The results of the HRU analysis showed that the Batang Agam watershed became 7 sub-watersheds, the dominant HRU was primary forest. In the case of Batang Agam, it was found that the level of erosion hazard was in the light category and the erosion value decreased in each review year
Studi Penentuan Nilai Koefisien Pengaliran DAS Batang Arau di Kota Padang
Full text linkBatang Arau river is located 0048” up to 0056” SL (South Latitude) and on 100021” up to 100033” LE (Longitutede East), and upstream part water catcment area it is cover 30,90 km2 area. The above said catchment area is a region consist of densely .populated and also dominated by vegetation of natural forest, protected forest, people’s forest, mixed forest, farm, recefield and yard. Based on site observation, most of the forest has changed become residant farms and settlement. This condition can be shown by land use map and change of runoff which was change from year to year. With this land use change however will also affecty changing of runoff coefficient. The goals of this study is to get flow coefficient (c) based on land use coefficient, debit AWLR, and based on SWAT application. Calculation of the coefficient based on land use map until be done by Arcgis method, debit AWLR using Hasper method and SWAT application. Study shown in period between 2009 – 2017, coefficient flow result is in range 0,36 – 0,37. Flow coefficient using AWLR result is in range 0,36 – 0,37, while flow coefficient using SWAT method is 0,25 – 0,3