(MOLDING DESIGN OF PADANG STATE POLYTECHNIC LOGO SOUVENIR MOLDING ON PRESSED PLASTIC INJECTION MOLDING MACHINE 1,960 KG / CM²)

ABSTRACT 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.

Analisis Kebutuhan Modal Kerja Kontraktor Berdasarkan Sistem Pembayaran di Gedung Rawat Inap Rumah Sakit Sanjiwani Gianyar

A 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.

EFISIENSI BIAYA PROYEK MELALUI PERUBAHAN DISAIN PADA PEKERJAAN FINISHING KAYU

Project 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%

PEMBUATAN WESTAFEL MINI OTOMATIS DENGAN MEMANFAATKAN KEMBALI AIR KONDENSASI AC

The 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 condensation

PENGENDALIAN PERANGKAT ELEKTRONIK BERBASIS MIKROKONTROLLER DENGAN ANDROID

The 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 home

Pengaruh Penerapan Kebijakan Sistem Manajemen Keselamatan Dan Kesehatan (SMK3) Terhadap Kepuasan Kerja Tenaga Kerja Pada Proyek Kantor Perwakilan Bank Indonesia Provinsi Bali

This 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.

Analisis Pengendalian Puncak Banjir Menggunakan Kolam Retensi di DAS Batang Air Dingin Kota Padang

Batang Air Dingin Watershed is one of the watersheds in Padang City which is located at 00050’12,5” to 00050’22,5” South Latitude and 100023’35,85” to 100022’42,84” East Longitude has changed its function. Land in the area around the river flow results in greater surface runoff, which has the potential to cause erosion. Runoff that occurs in Batang Air Dingin Watershed area causes the river to shrink during the dry season causing the local residents’ wells to be drought, while in the rainy season the river discharge value used is obtained. Through the calculation of the hydrograps discharge using the HSS Nakayasu and HEC-HMS methods whose values are validated by the field flood discharge. Hydraulic modelling using HEC-RAS software with discharge from HSS Nakayasu method. The retention pond plan is based on the amount of runoff that cannot be accommodated by the original storage capacity of Batang Air Dingin Watershed during 100 year return period was 1212, 94 m3/second with large river storage capacity is 1205,317 m3/second. The debit that can be deducted by making a retention pond is 30,5%.

Analisa Erosivitas Lahan Pada DAS Batang Agam Dengan Menggunakan Model SWAT

Batang 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.

Optimasi Pemanfaatan Lahan Pada Proyek Pengembangan Perumahan Dengan Metode Simpleks

House is one of primary human needs. Realizing the importance of housing needs, developers take advantage of these opportunities to provide recidential house. The main problem that often happens in housing development is difficulty in determining proportion of the types of houses that will be built within the size of land owned. To obtain the optimum amount of each type of house that will be built with the limits available, then set up a model. The optimization calculate is using the simplex method. The constraints for housing development consist of land area for each type of house with the total land area allocated for buildings is 16.116m2; The time available to complete the building is 364 days; Cost budget allocated for the development is Rp. 80.000.000.000,00 and comparison of market demand for each house is 10:6:15:5. The analysis result showed that the composition of optimum number of houses to be built are: 44 units of type 36A, 26 units of type 36B, 67 units of type 60 and 23 units of type 107 with maximum profit is Rp. 14.117.171.000,00.

Analisa Debit Andalan Pada Das Batang Arau Dengan Menggunakan Model Soil And Water Assessment Tool (SWAT)

Batang Arau is one of the rivers that flows in the city of Padang, the upstream part of the Batang Arau watershed starting from the Lubuk Paraku river which is in the northeast of Padang City, with a water catchment area of 2,504 hectares which is Dr. Muhammad Hatta, Nature Reserve Area Barisan I and Arau downstream. The Batang Arau watershed has decreased its primary forest area due to the large number of additional settlements. The increase in residential area resulted in the land that was previously not waterproof. The mainstay discharge always increases in the rainy season and decreases in the dry season. The mainstay discharge in the Batang Arau watershed is calculated using the Fj Mock method. The Batang Arau watershed also knows the mainstay discharge that occurred in 2010, 2012 and 2018 using the Soil and Water Assessment Tool (SWAT) model. The analysis was obtained from four processes, namely delineation of the watershed, the formation of the Hydrologic Response Unit (HRU), the formation of climatological data, and the simulation process. For the HRU analysis of the Batang Arau watershed, it was obtained 7 sub-watersheds, the dominant HRU, namely primary dryland forest, was 74.68%.