SIMES is a scientific journal for research in the field of mechanical engineering and civil engineering, published by the Department of the Faculty of Engineering, Prof. Dr. Hazairin, SH (UNIHAZ) Bengkulu. Indonesia. Majalah Teknik Simes is a peer-reviewed journal published by the Faculty Of Engineering Universitas Prof. Dr. Hazairin, SH Bengkulu. Majalah Teknik Simes is published two times annually, in January and July. Majalah Teknik Simes provides a place for academics, researchers, and practitioners to publish scientific articles. The scope of the articles listed in this journal is related to various topics such as Civil Engineering, Mechanical Engineering, Architecture, Electrical Engineering, Industrial Engineering, Engineering Education, and other related engineering fields. P-ISSN: 1907-3348 (Print) E-ISSN: 2810-028X (Online)
UNIVERSITAS PROF. DR. HAZAIRIN, SH BENGKULU
Analisis Regresi Nilai Kekuatan Mekanik Biomaterial Cangkang Kerang Darah Dan Resin Akrilik Bahan Gigi Tiruan
Extruded biomaterials made from clamshell have the potential to reduce the reliance on imported materials to make dentures, however, clamshell biomaterials and Acrylic Resin have no known effect as denture mix materials, so their effect as a denture mix material needs to be studied. using regression analysis. Multiple Linear Regression where a dependent variable (Variable Y) is associated with two or more independent variables (Variable X). Variables. Variables Variables Variables The effects of testing the compressive strength and flexural strength of blood clam skin biomaterial with acrylic resin alloy have no significant or dominant influence on either blood clam skin biomaterial powder or acrylic resin but both have an influence as replacement materials for denture composites. whose basic material is expensive acrylic resin. price.
Blood Shell, Acrylic, Regression, False Teeth
Copyright (c) 2024 Afrizal, Eko Martono, Donny Setiawan http://creativecommons.org/licenses/by/4.0
Teknik Pembakaran Bata Dengan Briket Batu Bara Campuran
There are many small brick-burning industries in rural areas, and especially near big cities and are industrial centers of bricks burning wood or husks. The price of this fuel continues to increase because the supply of firewood is dwindling and in the use of husks there is competition from other consumers, namely chicken farmers. Coal fuel has a good opportunity to be used in the brick industry, especially in Bengkulu. The coal combustion technique that has been introduced is a combination of coal – 50% wood. In this research, the combustion technique with coal and "biocoal" is developed, namely briquettes and a mixture of coal and sawdust. For this reason, a prototype furnace has been made, namely a traditional stove with a modified combustion chamber with a capacity of 4500 bricks. Using brick raw materials from Bengkulu, whose main minerals are coaline cristobalite and albite, burning with coal and “biocoal” briquettes has been successfully carried out. which is better achieved energy efficiency of 70% as a cheaper alternative, it has been tried burning with a mixture of coal and wood chips with a ratio of 7: 3 produces an energy efficiency of about 58% with the same raw brick material burning efficiency with a combination of coal-wood in Traditional stoves average 36% with a ratio of coal and wood of 1:8.
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Uji Coba Peyulingan Serai Wangi Dengan Variasi Tekanan Ketel Menggunakan Metode Distilasi Uap Air
Lemongrass is an herbal plant known for its refreshing taste and aroma. Citronella is one of the prospective volatile commodities and is rich in benefits. The content contained in this plant can be used in the perfume, food, cosmetic, medicine and aromatherapy industries. This study aims to make a tool and perform essential oil distillation by steam distillation method using citronella plant raw materials, and to determine the effect of variations in boiler pressure on the yield and specific gravity of essential oil of citronella plant. This research was conducted in June-July 2022, data collection starts from the design, tool manufacturing process, refining process, pressure testing and data processing. Analysis of the data in this study is presented qualitatively and quantitatively which is equipped with data tables and diagrams/pictures of the results of the research that has been carried out. Essential oil distillers can be made with a raw material capacity of 1 kg of citronella plant, 3 liters of water, and 90 minutes of distillation time using LPG gas as fuel. After testing using 3 pressure variations, namely 0.5 bar, 1 bar and 1.5 bar, the best quality essential oil is at a pressure of 1.5 bar with a % yield of 1.024% and a specific gravity of 0.886 gr/ml.
citronella plant, essential oil, steam distillation
Pengaruh Limbah Tutup Botol Air Mineral Pada Lapis Perkerasan Base A
One of the wastes that can be used as additives in base A is mineral water bottle caps. This waste can be expected to reduce the use of natural materials and reduce the amount of plastic waste. This study aims to determine the CBR value after adding mineral water bottle cap" waste as much as 6%, 8%, 10%, 12%, and 14%. The method used is a laboratory CBR test method using a CBR penetration tool to obtain the results of the experiment. The results of this "study indicate that base A aggregate added with 6% of mineral water bottle cap waste produces a CBR value of 96.85%, the addition of 8% produces a CBR value of 98.88%. The addition of 10% produces a CBR value of 99.68%, the addition of 12% produces a CBR value of 98.29% and the" addition of 14% produces a CBR value of 97.09%. These results indicate that the addition of plastic bottle cap waste as a filler in base A can be used because the CBR value is greater than "90% and with the composition that has been determined in this study.
Base A, Mineral Water Bottle Cap Waste, CBR
Belt Conveyor Otomatis Sebagai Penyortir Kualitas Jagung Manis Berbasis Nodemcu Esp8266
Conveyor belts that are controlled by a controller and programmed by a PC, are widely used in industry, ranging from quality control, sorting, security, carrying objects and many others. This conveyor belt uses a load sensor and a TCS3200 tcs load sensor. The process of getting quality corn with the two sensors will make it easier to sort the sorter
Rancang Bangun Mesin Parutan Kelapa Skala Rumah Tangga Dengan Kapasitas 10 kg/jam
This study aims to design, manufacture and test a coconut grated machine with a capacity of 10 kg/hour. The research method used in this research is an empirical method, namely field observations (observations) then from literature sources and then applied in one dimensional modeling with planning that is realized in one real form in the form of designing a coconut grating machine. This design is a coconut grater machine using 750 watts of electricity with pulley and belt transmission elements, with a grater system using a grater knife using a screw system. The results of the grater work obtained an average grater process of 36.72 Kg/hour. The advantages and disadvantages of designing the grated coconut machine that has been produced are very low noise levels and negligible vibration, because this machine is equipped with a pulley as a successor to the power of the electric motor. The increase in motor temperature for 2 hours to 4 hours of operation, there is no increase in motor temperature. The rotation of the grated head is quite good, it's just that the grated coconut with the shell is not clean, so the grating operation must be adjusted to the size of the coconut. The machine is easy to carry and safe to use.
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Studi Karang Mati Sebagai Pengganti Agregat Kasar Pada Adukan Beton
In this area Kaur is an area located in the southern coastel area of Bengkulu Province,The main problem of this research is that there are many dead corals that are not utilized by the surrounding population. The purpose of this research is the number of dead corals, so that they only become coastel waste. The method used is a laboratory test that is guided by SNI 03-1969-1990. Based on the results of the compressive strength of concrete it is known that the coarse agregate of dead coral used is a mixture of 60%. The study used the composition of 1 cement, 1.6 sand, 2.5 coral in the composition of concrete. The results show that the concrete is 60% more improved than the other concretes.
method, coral, compressive strength, SNI, laboratory
Analisis Turbin Air Sebagai Alternatif Pembangkit Tenaga Listrik Di Pedesaan
In an autonomy region era which is signed with appearance many new district ( Kabupaten ) is in order to faster the increasing economic country society . This program should be supported with an existence of electric power The fact that electric power isn't enough for all society especially in the country. It could be understood because generally the distance between a country is far enough and a few number of people in village . All of that make a big invest. Amount complex, the electric power from PLN far from enough. In the village is existence potential water power; nature water fall and irrigation canal that have 2.5 meters height and 250 liter's/second quantities. If two of potential water power could be exist all years long , it can be utilized to move turbine as a micro hydro electric power generator that very potential' in small village.
Perencanaan Bangunan Pengendali Banjir (Kanal) Di Das Air Bengkulu
Abstract The Air Bengkulu River Basin experiences a frequency of flooding twice a year due to the increase in water discharge during the rainy season. The purpose of this study is to determine the amount of peak discharge of the Air Bengkulu River and make a design of floodway control buildings dimensions in the Air Bengkulu River Basin. Rainfall data used in the purposes of this study are rainfall data for the last 10 years (2010-2019). Rainfall analysis plans calculated by statistical methods. The analysis of the planned flood peak discharge was calculated using the Nakayasu Synthetic Unit Hydrograph method with the results of the peak discharge of the Air Bengkulu River for the 2nd, 5th, 10, 20, 25, 50 and 100 year anniversary periods, respectively 557.68 m3/s; 732.85 m3/s; 845.18 m3/s; 955.15 m3/s; 978.80 m3/s; 1074.35 m3/s; and 1166.71 m3/s. Flood canal design analysis is calculated using the manning equation method (try error) using a return period of 25 years with a discharge of 955.15 m3/s; circular canal with a cross-sectional diameter of 18.5 m; with a water level of 14.68 m and a height of 3.82 m; while the canal is square in shape with a base width of 25 m; water level of 5.55 m; and height of 1.45 m guard; able to accommodate the debit plan return period of 25 years.
Perancangan Tongkat Untuk Tunanetra Menggunakan Sensor Ultrasonik Dan Sensor Water Level
Abstract Blind people only rely on their sense of hearing because they have a high hearing comprehension. One of the ways that blind people use to walk is like using a stick. But sometimes it is still difficult if you encounter a road surface with a hole so that not a few of the blind people often fall into the hole. Blind people also have difficulty if they encounter uneven road surfaces or flooded roads. From this, the design of the stick was made as a walker for the blind with audio and vibration output. The design of this tool uses the HC-SR04 ultrasonic sensor as detecting objects in front of the user and knowing whether a road has a hole or not. This design also uses a water level sensor to determine whether the road is inundated by water or not, especially on the hollow road. Then the design output of this tool is in the form of audio connected to the earphones and vibrations from the DC motor. The distance detected by the sensor for obstructions is at 100 cm, for potholes when 10-15 cm and for stagnant water when> 50%. If you want to stop using the stick, just push the switch on the stick again. The accuracy level of the HC-SR04 ultrasonic sensor is very good, seen from the error calculation that has been done where the largest error value is obtained at a distance of 10 cm and 20 cm with an error percentage of 0.43% and 0.67%. Furthermore, the smallest error value is obtained at a distance of 30 cm with an error percentage of 0.04%. It can be seen that the ultrasonic sensor works well with an error percentage of0.27%.
Pengaruh Sudu dan Kecepatan Angin Terhadap Koefisien Torsi dan Koefisien Daya Serta Efisiensi Turbin Angin Savonius Sumbu Vertikal
Abstract The present paper is concerned with experimental study of performance of a vertical axis savonius wind turbine. Savonius turbine blades are made of PVC pipe and a fan to drive the turbine. The test was carried out with a different number of blades, namely 2 blades, 3 blades and 4 blades at air velocity of 3.6 m/s, 4.4 m/s and 5.8 m/s. The results obtained the highest maximum power efficiency is in the 3 blade test, namely at air velocity of 3.6 m/s of 0.156, air velocity of 4.4 m/s of 0.313 and air velocity of 5.8 m/s of 0.182. The maximum torque coefficient for the three air velocity also obtained the highest value in the 3 blade test. At a air velocity of 3.6 m/s, a torque coefficient of 0.641 is obtained, a air velocity of 4.4 m / s is 1.027 and a air velocity of 5.8 m/s is 0.745. The maximum efficiency in the 3 blades test with air velocities of 3.6 m/s, 4.4 m/s, and 5.8 m/s is obtained respectively 15.6%, 31.3% and 18.2% efficiency. In conclusion, the 3 blades wind turbine has the highest efficiency compared to the 2 and 4 blades tests. Meanwhile, the highest efficiency was obtained at a air velocity of 4.4 m / s with 3 blades, namely 31.3%.
Evaluasi Penataan Parkir Pada Pasar Rakyat Di Kota Bengkulu
Abstract Along with the increasing population growth and the high level of the economy in an urban area or the increasing of an urban area towards a metropolitan city, it will result in an increasing need for facilities needed by urban communities such as business centers, education, offices and trade, so the need for parking lots increasingly widespread. The reason is because most people use vehicles a lot. This results in parking problems which are very important to be studied more deeply, because almost all activities in open spaces require parking facilities, including in the market area. Methods of data collection were carried out by main survey, Plate Matching Survey, Vehicle Number Survey, Vehicle Type Survey, Duration Survey Record entry / exit times of vehicles. A preliminary survey was conducted in order to find out the field conditions in the panoramic market area, kec. Singaranpati, Bengkulu city, Determining and dividing the research area into several points facilitates the survey of police number plates. After conducting a preliminary survey and piloting, it is followed by conducting a main survey. This main survey consists of the Parking Duration Survey (conducted at parking locations in the panoramic market, Singaranpati district, Bengkulu city) and the Atching Plate Survey carried out by recording the license plates of motorized vehicles (cars and motorbikes) that park at each observation point. , with time intervals every 1 (one) hour. At Pasar Panorama, the peak parking activity occurs on Sundays at Jalan Salak. The parking volume is 650 motorbikes, 65 cars, 2 trucks. The accumulated parking on Sundays is 30 motorbikes per hour, 22 cars per hour and 0 buses / trucks per hour. The parking duration for motorbikes is 88.3 hours, cars 1.48, buses / trucks, 2.3. Parking capacity with motorbikes is 0.72 per hour, cars 18.24 per hour, buses / trucks 13.85. Motorcycle parking index 2.17, car 0.81, nus / truck 0. Replacement time for motorbikes 2.17, cars 0.81 and buses / trucks 0. Parking space requirement for motorbikes 191, cars 0.32, buses / truck 0.01. Meanwhile, what happened on Jalan Kedondong on Sunday with parking volume was 698 motorbikes, 68 cars, 0 trucks. The accumulated parking on Sundays is 112 motorbikes per hour, 31 cars per hour and 0 buses / trucks per hour. Parking duration with motorbikes is 88.2 hours, cars 2.5, buses / trucks 0, parking capacity with motorbikes is 0.77 per hour, cars 10.8 hours, buses / trucks 0. Motorcycle parking index 1, 75%, cars 1.15%, buses / trucks 0. Replacement time for motorbikes 1.75, cars 1.15 and buses / trucks 0. Need for parking space on motorbikes 191, cars 0.32, buses / trucks 0 , 01.
Eksperimen Pengaruh Sudu Ganjil dan Genap Terhadap Turbin Pelton dengan Tekanan Konstan
Abstract Electrical energy is the main energy needed for electrical equipment. Electrical energy is energy that is very important for humans because electrical energy is currently one of the basic human needs. Current power plants rely heavily on fossil materials, while availability is dwindling, and an alternative energy is needed to get electricity, namely the Pelton turbine. This study aims to obtain water power, namely the Pelton turbine and to obtain efficiency, power, TSR and torque by varying the number of blades. The result is that for 9 blades the value of Cp max = 0.71, CT max = 0.95, TSR max = 2.68, max efficiency = 71%, power P turbine max = 4.08 watts. Whereas for the 12 Blade Pelton turbine, the result is that Cp max = 0.79, CT max = 1.38, TSR max = 2.74, max efficiency = 79%, turbine P power = 4.69 watts.
Loading Influences the Number of Blades and Constant Pressure
Analisa Kekuatan Sambungan Las Tig Pada Pengujian Tarik dan Kekerasan Plat Stainless Steel Setelah Proses Pemanasan Dengan Suhu 6000c di Tempering Dengan Minyak Rem dan Air Bercampur Garam
Abstract Heat treatment, heat treatment and rapid cooling to obtain the changing properties of carbon steel, metal or guides. One of the treatment methods is the tempering process. This process is carried out at a temperature of 6000C for 30 minutes then tempering with brake fluid and air mixed with salt. The results of the average tensile stress without heat treatment obtained yield stress ?y = (58.14) kgf / mm2, ultimate stress ?u = (71.2) kgf / mm2, breaking stress ?f = (68.13) kgf / mm2, Result The average tensile stress of 6000C heat treatment treated with brake fluid obtained yield stress ?y = (37.89) kgf / mm2, ultimate stress ?u = (48.33) kgf / mm2, breaking stress ?f = (43.58) kgf / mm2and the results of the average tensile stress of 6000C heat treatment which is tempered with salt water, the yield stress is obtained ?y = (31.14) kgf / mm2, ultimate stress ?u = (45.86) kgf / mm2, breaking stress ?f = (36, 8) kgf / mm2. For the hardness tester the chase results that the average values for the area ofthe parent metal, HAZ metal and weld m etal. Untreated specimens for the parent metal area obtained 58.6 HRB, for the HAZ metal area obtained 51.1 HRB and for the weld metal area obtained 53 HRB, specimens that received 6000C treatment with brake fluid for the parent metal area obtained 57.8 HRB, for the HAZ metal area obtained 50.4 HRB and for the metal area obtained 58.6 HRB and specimens that received 6000C treatment with 800 gr air mixed with salt for the parent metal area obtained 56.8 HRB, for the HAZ metal area obtained 49.4 HRB and for the weld metal area obtained 49.8 HRB. From the results of this study it can be concluded that the untreated specimens have the best tensile strength and hardness level compared to the welded joints of specimens that received heat treatment at a temperature of 6000C. While the specimens that received heat treatment at a temperature of 6000C were tempered with air mixed with 800gr of salt, the tensile strength and hardness level decreased more than the specimens that received heat treatment at 6000C which were tempered with brake fluid.
Perancangan Web-GIS (Website Geographic Information System) Kabupaten Lebong
Abstract In the era of globalization with the level of technological progress in various sectors requires the use of technology to be one part of various activities. Both in terms of production, management, and even government. Everything that is done quickly and efficiently does require an additional tool which in this case is the sophistication of the technology it self. Engaged in the government sector, the Lebong Regency Government has begun to run the government using technology, one of which is in the field of information technology. Development and use of government areas is an important thing so that it can be examined properly. The effectiveness of performance is required in carrying out this matter. Information technology that can be utilized in government, one of which is “Geographic Information System” (GIS). Using GIS will be very effective in promoting effective and efficient governance. Remote sensing that can broadly observe land makes Lebong Regency Government activities even better.
Analisa Cerobong Asap Gas Hasil Pembakaran Ketel Uap Pada Pabrik CPO
Abstract A steam boiler is a device used to process water into steam with a planned temperature and pressure. Then the steam which has that pressure is flowed into a process. Broadly speaking, the way the boiler works, hot steam that comes out of the fire is absorbed by the boiler wall (heating field). Process of processing palm oil at CPO (Crude Palm Oil) mills Through the process of boiling palm kernels with the help of a much needed tool, namely a steam boiler. A steam boiler is a device that works by heating water to boil and producing hot steam with high pressure, the resulting heat energy or what is often called heat is absorbed by the boiler wall (heating field), then it can be used for boiling coconut ore processes palm.
Perencanaan Bangunan Pengaman Pantai Pada Daerah Pantai Pekik Nyaring Kabupaten Bengkulu Tengah
Abstract The purpose of this study is to evaluate the wave height, maximum wind direction, and water level elevation and to design the dimensions of coastal safety buildings with wave conditions in the research location. The research method used is descriptive, quantitative, and searches for all necessary data derived from field study data and literature study data consisting of primary data and secondary data. After calculating, it is found that the largest breaking wave height is the result of the calculation of data obtained from BMKG, namely 1.77 meters, while the height of the breaking wave obtained by direct observation is 1.34 meters, so that the height of the breaking wave used in this study is the result. calculations from BMKG data. Based on data from BMKG, the maximum wind speed data for the last 5 years obtained the percentage of dominant wind speed, namely from the West with a total percentage of 58.33%, and the smallest wind speed that is from the North with a total percentage of 1.67. %, the design water level elevation is 2.1 meters and the top elevation of the coastal protection building is 4,877 meters. The weight of the protective layer for the head of the coast guard is 0.5 ton, the weight of the core of the beach is 50 kilograms, with a thickness of 1.5 meters of protection layer, and the width of the top of the head of the beach protection building is 2 meters while the weight of the layer The protection for the part of the beach protection arm is 1.51 tons, the weight of the core stone is 151 kilograms, with a thickness of 2 meters, and a width of the top of the armored beach guard building is 3 meters. The grain weight of the beach safety leg at the head W = 0.103 tons, with a width of 5 meters and a height of 1 meter for the head of the beach safety leg. The number of layers of protection per 10 m2 N for the head of the coast guard = 45 pieces and the number of layers per 10 m2 of N for the part of the coast guard = 22. Based on these results it can be concluded that the BMKG data is not always the same as the field data.
Analisis Perhitungan Dan Pengukuran Sistem Suplay Ac/Dc Untuk Kontrol Beban Di Gardu Induk Pekalongan
Abstract This abstract was conducted because of the lack of attention and maintenance carried out on the AC / DC supply, which is actually very important at the substation. How to make an AC/ DC supply system at Pekalongan substation fast work with high reliability and what steps are taken to reduce the impact of disruption or damage to equipment at the Pekalongan substation especially AC/ DC supply for load control. The research objective was to 1) analyze the AC/ DCs supply system at the Pekalongan substation, 2) Know the intermediate error value the measurement results on the Supply AC/ DC system are measured by the calculated value. The method used in this analysis consists of several stages, namely: 1) planning, 2) start, 3) Action, 4) Observation, 5) Reflection, 6) documentation, and 6) Finish. The analysis of the AC/ DC supply system for load control at the Pekalongan substation was carried out in different periods of time, namely 3 consecutive months from February 2019 to April 2019 so that the error results obtained were completely accurate. The analysis carried out can be said to be successful and the value shown by the analyzed equipment this is the actual used value because the results of measurements and calculations carried out from February 2019 to April 2019 all have an error value below 1%.
Studi Kebutuhan Instalasi Pengolahan Air Limbah (Ipal) Tempat Pembuangan Akhir Sampah Dengan Geomembrane Kota Bengkulu
Based data from Bengkulu Environmental centre in 2019, it is known that the volume of waste for Bengkulu city residents per day reaches 373.07 m3/day. The amount of water that enters the Air Sebakul TPA causes leachate to collect quickly and then moves to dissolve into the ground. The absence of waste water treatment plant at this landfill causes contamination of surface water and ground water. Especially when it rains, the leachate will flow into the drainage channels of residents around the TPA which causes an unpleasant odor. The purpose of this research ia to determine the ned for WWTP (waste water treatment plant) at the Air Sebakul TPA Bengkulu by using geomembrane layer. The method of the study uses a survey method with forecasting using geometric formulas and mononobe while the data validation test uses a tracking signal approach. The results of this study show that the prediction of the Bengkulu city waste heap and leachate discharge for the next five years is 792.746,35 (m3/year) or 9.972 m3/day. Based on the current land capacity which has an area of + 30.000 m2, The air Sebakul TPA is declared capable of accommodating waste for the next years. While the planning for the next ten years with waste generation reaching 1.728.810, 26 (m3)/year is declared unable to accommodate waste.Therefore, a large-scale land expansion is needed from the existing land availability, as well as a larger IPAL storage capacity.
TPA Air Sebakul, IPAL, lindi water, geomembrane
Pembuatan Produk Ring Matahari dari Pelat ASTM A36 Menggunakan Plasma Cutting OXYTOOM 20 HPC
Nowadays, Machine tools are equipped computer system, example: CNC plasma cutting machine. Computer Numerically Controlled plasma cutting is used to cut various types of metal, plate and other materials that it has good accuracy which uses heat obtained from a high concentration laser beam where the depth level is adjusted according to the thickness of the plate to be cut. One of the products is Sun Ring. Material to make this component is steel plate ASTM A36 which the thickness is 1 mm. The step to make this product is design that it help of Autocad software, Magic Logotag and Magic Tool. Result from cutting process are diameter 30.4 mm inner, 37.4 mm outer, 9.4 fin length and 3.8 mm fin width. Dimension drawing in Autocad software is bigger than workpiece size because it cut material (steel plate ASTM A36) quickly which it cause insignificant shift. Final process of this product is hone to get the actual dimension
Analisa Jenis-Jenis Kerusakan Jalan Flexible Pavement Pada Ruas Jalan Di Kota Bengkulu
Roads are an important asset because of their enormous value and very strategic role in development, so they must be properly maintained in order to function as expected. As it ages, a pavement will experience a decrease in conditions due to continuous traffic loads and other factors such as temperature and changing weather. An indication of a deterioration in road conditions is damage to the pavement surface. For this reason, road maintenance techniques are needed so that the road is always functioning at all times. Proper maintenance will provide the desired service life. Conversely, if maintenance is not carried out properly it can cause the road to break down quickly. In this study, the authors conducted research on one of the roads in the city of Bengkulu, namely Jalan Kalimantan Merpati 17 Rawa Makmur, Bengkulu City. To identify road damage using the PCI (Pavement Condition Index) method and to determine the level and type of road damage. The method of data collection is by conducting a direct survey to the location of the study which aims to find out the initial data description of the types of damage and recording of the pavement surface which is then carried out by the researcher for the evaluation of the level of damage to the road from the first source, observed, researched, and recorded for the first time by the researcher. alone. In this study, the data to be taken are: the types of pavement surface damage that occurred, the area of damage to the point of damage, the level of damage, photos of road pavement surface damage documentation. The results of this research are the types of damage that commonly occur on the Kalimantan Merpati 17 Rawa Makmur road section in Bengkulu City are edge cracking, weathering and ravelling, potheles, bumps and evaluation. Damage to segment 1 of the road segment Kalimantan Merpati 17 Rawa Makmur Bengkulu City gave results in the form of the average PCI (Pavement Condition Index) value in segment 1 of the road segment Kalimantan Merpati 17 Rawa Makmur Bengkulu City was 78.7 with very good condition (very good) .
Evaluation of the level of road damage, PCI (Pavement Condition Index).
Perancangan Belt Conveyor Dengan Kapasitas Angkut 6 Ton/Jam Pada Pabrik Karet
Conveyor belt planning with a capacity of 6 tonnes / hour with a carrying distance of 12m and a slope angle of 200 for a rubber factory. The belt serves as a medium for transporting rubber raw materials, where the planned belt width is (L = 800mm) and the overall length (Ls = 24m) Where the conveyor belt is driven by a pulley whose width is 900 mm, the diameter of the pulley is (Dp = 625 mm), the driving pulley rotation (n = 24.45 rpm), the electric motor as the initial drive for moving the conveyor belt machine to move the pully is used a motor with torsional moment (T = 12906 kg / m), where the shaft material is taken from JlS steel. G. 4501. S. 45. C. Tensile stress 58 kg / mm2. Roll diameter (D = 108), the bearings used are closed type ball bearings with bearing number (6008), inner diameter (d = 40 mm), outer diameter (D = 68 mm), bearing width (B = 15 mm), Specific dynamic nominal capacity (C = 1310 kg), static nominal capacity (Co = 1010 kg).
Analisa Economizer Dalam Ruang Pembakaran Ketel Uap Pada Pabrik CPO
A steam boiler is a device that works by heating water to a boil to produce high pressure hot steam. The drum is made of forged steel DIN 17100, St 37-1 with a tensile strength of 240 N / mm² = 240 kg / cm². In the palm oil processing industry CPO (Crude Palm Oil) the hot steam produced by the steam boiler is used to drive steam turbines, as source of electrical energy, oil palm boiling, and other palm oil processing processes.The economizer is part of a steam boiler which serves to heat water for filling the kettle so that it reaches its boiling point.
Pengaruh Jumlah Sudu Terhadap Efisiensi Turbin Angin Savonius Sumbu Vertikal
One of the potential new and renewable energy sources is wind energy. Wind energy is a clean energy source with no emissions. The government is quite concerned about reducing the use of fossil energy sources and switching to renewable energy that is more friendly to the environment and has unlimited sources. for example in 2025 the government targets the installed capacity for wind energy to be 0.97 GW. For that we need a continuous study of the potential utilization of wind energy. The purpose of this study was to determine the effect of the number of blades on the efficiency of the vertical axis savonius turbine. The test was carried out with 3 variations in the number of blades, namely with 3 blades, 6 blades and 12 blades at a wind speed of 3.5 m / s. To drive the turbine, a fan is installed at a distance of 500 mm from the turbine. The results showed that the highest efficiency was owned by the turbine with the number of blades 12 at a wind speed of 3.5 m / s, namely 23% with a generator output power of 1.94 watts, 398.8 rpm rotation, 0.046 torque. The smallest efficiency was obtained in the 3 blade test, which was 4.2%. Then the research can be concluded that the number of blades greatly affects the value of efficiency, it can be seen that the number of blades 12 get a greater efficiency value than the number of blades 3 and 6.
Pengujian Tarik Pada Baja Karbon Sedang Di Las Smaw Dengan Pemanasan Suhu 900oc Di Quenching Air Kelapa Dan Udara
From the result of tensile test research on carbon steel plate. After the welding process and treated with a load of 3000 kg get the average calculation value are non treatment ?y = 54,32 kgf/mm², ?u = 28,36 kgf/mm² and ?f = 23,78 kgf/mm². The average value of the tensile test on air quenching are ?y = 29,63 kgf/mm², ?u = 34,93 kgf/mm², ?f = 33,01 kgf/mm². The average value of the tensile test on coconut water quenching are ?y = 22,66 kgf/mm², ?u = 29,47 kgf/mm², ?f = 26,79 kgf/mm². this tensile test research, it can be concluded that coconut water quenching , has better result than air quenching.
Pemanfaatan Limbah Tutup Botol Air Mineral Sebagai Filler Pada Lapis Perkerasan Base a
One of the most common plastic wastes found around us is the cap of mineral water bottles. The waste of mineral water bottle caps as a filler on the basis is expected to reduce the impact of plastic waste it self and reduce rock waste in the quarry. Tests carried out by adding fillers of mineral water bottle cap waste as much as 0%, 10%, 20%, and 30%. The ability of mineral water bottle cap waste as a filler can be tested by looking at the value of the California Bearing Ratio (CBR) generated after addition. CBR testing is carried out by the laboratory CBR test method using a CBR penetration tool. From the examiners, the results show that; base A aggregate without the addition of mineral water bottle cap waste with a CBR value of 93.38%; the addition of 10% of mineral water bottle cap waste resulted in a CBR value of 98.73%. The addition of 20% obtained a CBR value of 96.55%; and an addition of 30% resulted in a CBR value of 87.65%. The addition of 10% and 20% of mineral water bottle cap waste filler can increase the CBR base A value, because it produces a larger CBR value without addition. Meanwhile, an increase of 30% will actually reduce the strength of the base itself because the resulting CBR value is smaller. The addition of filler of mineral water bottle cap waste can increase the CBR value of base A with the right composition. Utilization of mineral water bottle cap waste at base A will reduce the amount of plastic waste and reduce environmental pollution, as well as reduce the overexploitation of rocks for base A raw material.
Pengujian Kekerasan Dan Struktur Mikro Plat Baja Karbon Rendah Setelah Proses Pemanasan Dengan Suhu 8000c Di Quenching Bio Solar
Hardness is one of the mechanical properties in material. One of the process that influence hardness is heat treatment that is given heat with temperature 800 0C. The cooling sistem are non treatmen and quenching that it use air, water, biosolar. The result from this research are 0,306 BHN of the non treatment and quenching method 44,243BHN (cooling in the air), 882,143 BHN (cooling in the water) and 49,349BHN (cooling in the Biosolar). Microstructure is details of a metal object that are very small and invisible to see with naked eyes. Because of that condition it use optic microscope and electron microscope to check details of the steels. The result of this process are non treatment (26,4 ?m) and quenching process air (21,7 ?m), water (22,6 ?m) and Biosolar (22,7 ?m). Phase that happen are ferrite and pearlite in the iron, low carbon steel. Keywords: Hardness test, micro
Hardness test, micro structure, quenching.
Analisa Simpang Tak Bersinyal (Studi Kasus Di Ruas Jalan Taman Simpang Kandis Kota Bengkulu)
Intersection are knots in transportation network where two or more roads meet, in this area conflict is occurred, law of traffic are applied to handle this conflict to make sure who gets the priority to use the intersection first. Control Intersection make use of maximum capacity of the intersection, reducing and preventing accidents by reducing the number of conflicts. This research intend to analyse the traffic and calculate traffic flow at Taman Simpang Kandis road. To get data for this research purpose can get done by using direct observation, and count number of vehicle that passed the four arms intersection and three arms intersection. The result of this survey categorized by light vehicle, heavy vehicle, motorcycle, and non-motorized vehicle. Four arms intersection performance analysed by observe capacity, saturation degree, delay, queue chance is still below the standard based on MKIJI 1997. The best alternative for the four arms intersection are by combining installation the “prohibited to stop“ road sign and change 2 lanes with 2 directions to four arms intersection with 2 lanes and 1 direction. Three arms intersection performance analysed by observe capacity, saturation degree, delay, queue chance is still below the standard based on MKIJI 1997. The best alternative for this three arms intersection are by prohibited to turn left from Rustandi Sugianto 1 road and prohibited to turn right form Rustandi Sugianto 2 road where can make vehicle stacked on side of that road.
Analisis Kebutuhan Drainase Di Desa Senali
Abstract The location of the road in Senali Village, North Bengkulu Regency is a shortcut that does not pass through the city center, if high rainfall results in water flowing through the road, as well as puddles of water around people's homes, this is due to the absence of adequate drainage channels to drain runoff. rain on roads and community sewers. The purpose of this research is to design the dimensions of road drainage in Senali Village by calculating the annual rainfall data. The results of the study showed that the condition of inundation on the Senali Village road and community houses as a result of the absence of good drainage on the road body and due to high rainfall, a drainage design was planned by calculating the intensity of rainfall for the last 15 years (data from the Statistics Agency). the amount of rainfall X1 = 4577 mm, the arithmetic mean of cumulative rain (X) = 305.13 and the standard deviation (Sx) = 77.55 and the value of the amount of rainfall for the return period T years (mm)/24 hours XT is obtained = 370.11 mm. The dimension selection is a trapezoidal model with a size of Q=0, 38 m3/second h = 0,52 m W=0,36 m B=0,53 m and A= 1,05 m.
Drainage, inundation, rainfall, and dimensions
Pengaruh Penambahan Abu Tandan Kelapa Sawit Terhadap Daya Dukung Tanah Lempung
ABSTRACT One of the most important material that has great impat to a structure or onstrution in civil engineering job is soil, either that job is building or road pavement construction. One of problem which may happen faced by consultant or contractor ( especially for road pavement construction ) is take care of soil and other bad component to make sure those components can be used as ingredient for that pavement construction. Thing can be done to fix the mechanic property in this research is by using chemical way like adding oil palm ‘s stem ashes with 0%, 6,5%, 7%, 8%, and 8,5 % variation from clay. Biggest CBR value happen when 0,2 penetration with CBR value was 18,078% by using 8,5 % oil palm’s stem addictive. This value has increased by 2,288 % from the CBR value from the original soil which is 15,790%. With adding 6,5% oil palm’s stem ashes the CBR value increased 0,703%, when adding 7% increased by 0,273% and also when adding 8% increased 1,168%. This CBR value qualified Bina Marga 2018 general specification ( Third revision ) where CBR value > 6%.