Jurnal Ilmiah Poli Rekayasa
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Kajian Keselamatan dan Kesehatan Kerja ( K3 ) Konstruksi Balok Pada Konstruksi Bangunan Gedung
Full text linkConstruction projects have a very high risk of work accidents. Work accidents will disrupt all project activities that can cause death and loss to the project. A work accident is an undesirable and unexpected incident which could result in loss of life and property. Based on Law No.1 of 1970 concerning work safety, work accident is an unexpected and undesirable event that disrupts the regulated process of an activity and can cause harm to both human victims and property. For this reason, it is necessary to have a construction safety management system using methods Hazard Identification Risk Determining Control (HIRADC). HIRADC will be implemented if there is support from management for occupational safety and health (OSH) in the form of policies, organizational structure and budget. From the studies conducted, the most common hazards are falling, punctured, scratched, tripped, bumped, inhaled dust, electric shock, exposed to concrete splashes with extreme risk of risk of injury, disability and even death. For this reason, there is a need for handling control in the form of mandating the use of PPE, administrative control such as making work instructions, SOP, must have SIO and SILO, installing signs, and doing engineering such as work methods, shopdrawing, providing regular training
Analisa Perbandingan Percepatan Penyelesaian Proyek Dengan Metode (Studi Kasus : Proyek Mercu Suar,Yogyakarta)
Full text linkTime constraints are often a problem in construction projects. Project scheduling and consistent evaluation are needed so that the project is completed on time. Evaluation is applied using performance intensity methods and Microsoft Project. Performance Intensity is a calculation carried out to determine the pace of project work. Performance intensity provides information on how quickly an activity can be completed. For the calculation of Performance Intensity use PPI, API and CPI. To control work in the field using CCS and CCP.
Evaluation to find out the time performance applied to the Yogyakarta Lighthouse project. The project is planned to be completed on December 14, 2014 with a duration of 266 days. Evaluation is carried out for 35 periods. The results of this evaluation are differences in the analysis of the final day between the method of Performance Intensity and Microsoft project. The final day analysis of Performance Intensity at week 35 for 279 days, while analysis of Microsoft Project for 280 days. Differences in the range of predictions for the day-to-day analysis of a project are caused by the Performance Intensity method using the average cumulative work rate as a benchmark that changes every period. To pursue delays, the project acceleration method is used, namely Schedule. The time needed for the Schedule is 80 days
Analisis Lalu Lintas pada Ruas Jalan Lingkar Sicincin-Lubuk Alung Kab.Padang Pariaman untuk Disain Perkerasan
Full text linkTraffic is an important part of road pavement design in addition to subgrade strength. This is because traffic is a burden for the road and is very decisive in the thick planning of each layer of pavement. Thus the calculation of the traffic load should have been carried out before carrying out the design of the pavement. The Sicincin - Lubuk Alung ring road section located in Kab.Padang Pariaman is one of the road sections designed with pavement design. Therefore, a traffic survey was carried out on the road section.
Traffic surveys are carried out for three days, two days on weekdays and one day on holidays. Every day the survey time is divided into three times, morning, afternoon and evening at rush hour. The survey in the morning takes place at 07:15 - 08:15 and 08:15 - 09:15 while in the afternoon it takes place at 13:00 - 14:00 and 14:00 - 15:00. Furthermore, for the afternoon survey, it will be held at 16:00 - 17:00 and 17:00 - 18:00. After processing the data, in each survey period the LHR value is obtained for both directions. The LHR value used for pavement design is the largest LHR value of all LHR values obtained
Partisipasi Masyarakat Dalam Rangka Penanggulangan Pencemaran Sungai
Full text linkRiver is a natural and man made watercourse in network of river flow and its water. The use of water in upper catchment will reduce the opportunity in using it downstream the catchment. Pollution in headwater would result in sosial cost in the downstream area. In turn if the society in the upper catchment preserve the river, the society downsteam the catchment will be benefit from it.
Water is a natural resouces to fulfill life need of the society. Therefore, it needs to be preserved to benefit life of man as well other living matters. To preserve or attain water quality which can be used sustainably by the society with acceptable water quality level, there needs to preserve and control water by with preservation and mitigation of river pollution
Analisa Karakteristik Dan Distribusi Hujan Pada Kawasan DAS Batang Hari Kabupaten Dharmasraya
Full text linkBatang Hari is the 2nd biggest DAS in Indonesia. About 76% of Batang Hari DAS is located in Jambi Province, the entire 24%is in West Sumatera Province. Batang Hari dam which was built on 1997 is one of infrastrcture at Public Work ministery under management at Balai Wilayah Sungai Sumatera V (BWSS V) his high potential of water stock. Optimum discharge of Batang Hari Dam is about 86 m3/sec. In the recently years DAS Batang Hari has been disturbed by some changes like catchment area utilized fot other purpose, change on global climate done to greenhouse effectwhich causingintensity of rain as well as flood. This climate change then will affected standard for engineering design for making a water control buiding which may injuireaccurate waterfall intensity data. Study of rainfall intensity obtained from 3 (three) nearby stations will show the characteristic dam trend of distribution with reperted period. Cousistency of data using Mass Curve method and local rain analysis to be done by Arithmatic & Thiessen Polygon method. To analysis trend of rainfall distribution. We use : Normal, Log Normal, Log Person type III and Gumbel methods. For complaince test of distribution, we use Chi-Kuadrat and Smirnov-Kolmogorov methods. Refer to result of distribution using Chi-Kuadrat and Smirnov-Kolmogorov methods for Arithmatic methods it is adviced to use Gumbel method to evaluate distribution trend; because critical deviation is smell comparing to available in table, with rainfall with repeating period 2,5,10,25,50 and 100 years are 124,08 mm, 1168,56 mm, 198,01 mm, 235,22 mm, 262,83 mm, 290,23 mm and Thiessen Polygon 106,93 mm, 138,22 mm, 158,94 mm, 185,11 mm, 204,53 mm, 223,81 m
Rekayasa Alat Pembuat Disk Runner Dengan Sistim Jig Dan Fixture
Full text linkElectrical energy at this time is needed in daily life so that the demand for power from the community is so large. PLN in this case as a provider of electric current is very overwhelmed to meet customer demand. For this reason, alternative energy producers called renewable energy are sought, one of which is a micro hydro plant. In West Sumatra alone, PLTMH has considerable potential to reach 500 MW (Source: PLN West Sumatra Regional Research and Development), so that West Sumatra itself has been designated a green energy barn by the Ministry of Energy and Mineral Resources (Source: Ministry of Energy and Mineral Resources). This is a promising prospect to be developed so that PLTMH equipment can be made with the mastery of appropriate technology. Based on the survey that has been done generally making microhydro turbines is still doing manual work with simple production equipment and very low production volume. The delay in making this generator is in the runner which has a disk component as a holder where the blade will produce rotation. Part made has a specific contour shape and repetitive work. Making disk runners through six workmanship sequences using different CAD applications, tools and places. Jig and Fixture is a technological tool that is suitable for manufacturing micro hydro turbine disk runners where the material holder is on the dividing plate while the torch weld cutter is hung on the guide for the cutting process. These assistive tools designed can eliminate the work process. This mobile device can cut circles with a diameter of 200 mm-300 mm, a blade of as many as 28 pieces with the same distance, shape profile and accuracy and meet the ergonomic aspects for the operator
Pengaruh Suhu dan Waktu Kempa Terhadap Sifat Fisik dan Mekanik Papan Komposit dari Serat Tkks Berperekat Gambir Berlapis Anyaman Bambu
Full text linkFiber from oil palm empty fruit bunches (OPEFB) can be used as a raw material for the production of composite board. Gambier can be used in a natural adhesive because of its high tannin content. Appropriate material to veneer the board and the correct temperature and pressing time are needed to improve the quality of this composite board. This research was to discover the optimal temperature, needed to make woven bamboo veneer composite board from OPEFB fiber and gambier based adhesive that can fulfill the Indonesian National Standards for veneered composite boards and the pressing time required for the board to reach thermal equilibrium. Results showed that both temperature and pressing time have a significant influence on density, moisture content, thickness swelling and modulus of rupture (MOR) of the boards but not on the internal bond strength or the compression strength parallel to the grain. Multi-layered composite board pressed at 1300C has weaker physical and mechanical properties than that pressed at 1450C, or 1600C. Twenty-five minutes of pressing time yielded a better product than 15 minutes and the combination of 25 minutes and 1450C proved to be optimal for the curing of the gambier based adhesive used with 8.4% moisture content fibers. Use of woven bamboo veneer resulted in boards that reached the density, moisture content, thickness swelling at 24 hours (PT24) and MOR National standards SNI 03-2105-2006 for standard veneered particle board however it failed to reach the standard for modulus of elasticity (MOE). The bonding strength of the boards reached the Nation Standard SNI 01-5008.7-1999 of 3.5 kg/cm2 minimum for structural veneered boards
Implementasi Teknologi Fuzzy Logic Controller untuk Pengendalian Temperatur pada Proses Pengeringan Tembakau
Full text linkTobacco is one of the six most important commodities in Indonesia. This sector is the most strategic that can absorb millions of workers, ranging from tobacco farmers, laborers or workers to tobacco companies. One of the stages in tobacco processing is the drying process. Drying using sunlight is often distracted by erratic weather changes such as rain, this can cause the drying process to be slow and require very long drying time. Based on the above, a tobacco dryer was developed by implementing the fuzzy logic controller (FLC) method as the temperature controller and its moisture meter. This tool uses LM35DZ type temperature sensors and Soil Moisture YL-69 type moisture sensors. In addition, this artificial drying process also uses heating elements instead of heat from sunlight. Programming tool is made using Arduino uno microcontroller. When compared to conventional drying, the drying results using the tool will be superior in terms of time efficiency, human power and product quality
Rancangan Teknologi Tepat Guna untuk Mesin Penggiling Kopi Sistim Poros Vertikal
Full text linkCoffee is material of drink and coffee income for Indonesia Country. Each one of coffee proses for drink is grind proses. Grind coffee proses influence of taste and confortable. The grind coffee prosesto produce powder, natural aroma, big capacity, easily found, estetika, and economic value. From research, hoper the grind coffee machine is the produce coffee powder, natural aroma, capacity, small power electrical, portable, estetika and economic value.In this paper Grinder Coffee Machine Vertical Shaft System, to produce grinder with Conical Burr Grinder so natural aroma, powder smoot and same size. The specification this machine is power 0.5 HP, motor rotation 500 rpm, size 300mm x 300mm x 470mm and capacity produce 106 kg/hour
Perancangan dan Implementasi WSN (Wireless Sensor Network) Pada Alat Ukur Energi Listrik
Full text linkWSN (Wireless Sensor Network) is a network consisting of several sensor nodes that form a collaboration in a WSN technology network using sensors. The WSN system can be implemented on an electrical energy meter. Electrical energy measuring instrument (kwh meter) is important for the community because it is related to the amount of the electricity bill. In the use of electrical energy, sometimes people do not know how much energy has been used in a month, so there is often a waste of electricity. The main purpose of this system is in the framework of transparency and provides information on per-kWh load rates in the use of electricity.The method used in making WSN implementation on this electrical energy measuring instrument is analyzing the problem, designing the system, making the system up to system testing. By carrying out these steps, the WSN implementation on this electrical energy measuring instrument can provide monitoring effectiveness and can find out how much per-kWh costs in the use of electrical energy.This system is programmed using the C language on Arduino. The devices used are Arduino Nano as the main controller, nRF24L01, ZMCT103C, LM358, LM2917N, and RTC. From the discussion it can be concluded that this system can help in knowing the cost of electricity usage per-kWh and can monitor the use of electrical energy using a PC (Personal Computer)