Journal of Green Science and Technology最新文献

{"title":"COST AND TIME ANALYSIS OF DRAINAGE WORKS USING CONVENTIONAL RIVERSTONE METHOD AND PRECAST U-DITCH METHOD","authors":"Yulianus Brechmans Dilianto, Dimas Langga, Chandra Galuh, Widarto Sutrisno","doi":"10.33603/jgst.v8i1.135","DOIUrl":"https://doi.org/10.33603/jgst.v8i1.135","url":null,"abstract":"Road drainage is part of the infrastructure required for roads. This infrastructure is designed to drain water from the surface of the road to its final disposal. In general terms, drainage is a series of structures designed to reduce and remove excess water from an area or land to allow the land to function optimally. There are two types of road drainage systems, surface and subsurface. Surface drainage systems are generally open or closed channels.\u0000The method used in this research is quantitative method, where this method explains a process of seeking knowledge using data in the form of numbers as a means of analysing information about the things is desired to know about a situation that becomes the object of study and then analysed with the help of Microsoft Excel 2013 and Microsoft Word 2013 software.\u0000The comparative analysis results of the cost and time for implementation of drainage works using the conventional river stone method over a length of 192 metres requires 55 working days at a cost of Rp 123,617,000.0, while the precast U-ditch method over a length of 174 metres requires 48 working days at a cost of Rp 78,292,000.0. Where the implementation of the conventional method turns out to be 14% longer than using the precast method.\u0000The results of the analysis of the cost per metre of drainage works using the conventional river stone method and the precast u-ditch method obtained the results, which are drainage works using the conventional river stone method amounting to Rp 6,438,385 while the work using the precast u-ditch method is Rp 4,449,540, with the difference between the two methods amounting to Rp 1,988,845. Where the use of the precast method is 30% lower than the conventional method.","PeriodicalId":419103,"journal":{"name":"Journal of Green Science and Technology","volume":"48 12","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140228823","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"EFFECTIVENESS OF ABSORPTION WELLS USING THE SUNJOTO METHOD TO CONTROL FLOODING IN THE VILLAGE OF NGRASEH BOJONEGORO","authors":"Mushthofa Mushthofa, Fajrina Nur Fadhila, Yulia Indriani, Nasyiin Faqih, Mochammad Qomaruddin","doi":"10.33603/jgst.v8i1.133","DOIUrl":"https://doi.org/10.33603/jgst.v8i1.133","url":null,"abstract":"Infiltration wells are a form of hydrological infrastructure used to manage rainwater. Infiltration wells are usually built as part of a rainwater management system to soak rainwater into the ground and reduce surface waterlogging as well as slow down surface runoff and allow rainwater to seep into the ground to renew aquifers or prevent waterlogging. Maintaining groundwater levels is an important step in sustainable water resource management. The aim of this research is to plan effective infiltration wells to replace rainwater catchment areas lost due to building construction. The planning of this infiltration well uses the Sunjoto  method. From the research results, it was found that an effective infiltration well design was calculated using the Sunjoto  method. With the data, each roof area of ​​the house has an optimum number of infiltration wells with a planned infiltration well diameter of 1 m with a depth of 2.5 m with an effective depth according to the calculations is as follows: 60 m2 number of 1 unit of absorption well with an optimum depth of 2.82 m, 80 m2 number of 2 units of absorption well with an optimum depth of 3.76 m, 100 m2 number of 2 units of absorption well with an optimum depth of 4.7 m, 120 m2 number of 2 units of infiltration wells with an optimum depth of 5.64 m, 140 m2 number of 3 units of absorption wells with an optimum depth of 6.58 m, 160 m2 number of 3 units of absorption wells with an optimum depth of 7.52 m, 180 m2 number of 3 units of absorption wells with an optimum depth of 8.46 m, 200 m2 total of 4 units of infiltration wells with  an  optimum depth  of 9.4 m.","PeriodicalId":419103,"journal":{"name":"Journal of Green Science and Technology","volume":"51 20","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140230977","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"CAR PARKING NEEDS ANALYSIS AT CAMPUS A, JAKARTA STATE UNIVERSITY IN THE CONSTRUCTION PERIOD","authors":"Intan Puspa Wangi, Lenggogeni Lenggogeni, Winoto Hadi","doi":"10.33603/jgst.v8i1.123","DOIUrl":"https://doi.org/10.33603/jgst.v8i1.123","url":null,"abstract":"Parking is the main supporting facility in the campus environment. Jakarta State University (UNJ) is one of the state universities in the DKI Jakarta province. The increase in the number of UNJ students every year certainly causes an increase in the need for parking, especially on Campus A UNJ as the main campus. Coupled with a construction project in Campus A UNJ, the parking area, especially car parking, is getting narrower. Based on these problems, it is necessary to research parking arrangements at Campus A UNJ.\u0000This study aims to determine the need for parking and arrange the car parking area for Campus A UNJ according to the demand for car parking space that existed during the construction period. The parking space arrangement for Campus A UNJ considers UNJ's policy as the manager in allocating parking spaces in the future. Primary data was obtained by conducting a field survey using the number plate survey method and PSU calculation survey while secondary data was obtained from UNJ parking inventory data. Primary data were obtained by conducting field surveys on 29 May-31 May and 8-9 June.\u0000The results showed that the value of the need for car parking in 2023 was 367 PSU cars, while the number of parking lots available at Campus A UNJ was 389 PSU. The peak day occurs on Tuesday 30 May 2023 and the peak hour for parking accumulation occurs at 13.00-14.00 WIB. With a parking index close to 100%, this can make it difficult for drivers to find an empty parking space, especially considering the pattern of car parking in the UNJ campus A parking area rotates in one direction so that the opportunity to find an empty parking space during peak parking hours only has a one-time or one-time chance. parking spaces at peak parking hours only have a one-time chance or the driver must first exit the parking lot and then enter again to find an empty parking space. The arrangement of car parking modeling will also be presented in this article. It is hoped that the results of this early-stage research can provide an overview and recommendations on parking management methods at Campus A UNJ.","PeriodicalId":419103,"journal":{"name":"Journal of Green Science and Technology","volume":"58 3","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140230313","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"FACTORS CAUSING TIME DELAYS COMPLETION OF CONSTRUCTION PROJECTS(Case Study on Facilities Building Construction ProjectSports Stage 5 Construction of the East Stand)","authors":"Al Arif, Kartono Wibowo, Sumirin Sumirin, M. F. Ni’am","doi":"10.33603/jgst.v8i1.128","DOIUrl":"https://doi.org/10.33603/jgst.v8i1.128","url":null,"abstract":"Inaccuracy in planning project activities during project implementation greatly affects implementation delays in the field. The purpose of the study is to determine and analyze: (1) the causal factors that contribute to project completion delays, (2) the causal factors that contribute to the dominant delay in project completion, and (3) delay risk management. In the Sports facilities (Eastern Tribune Development) project. Cirebon Regency.\u0000This study is a type of quantitative descriptive study. Data collection was done through FGD, interviews and questionnaires distributed to 10 qualified respondents in the construction sector. The resources of this study are the cause of the delay in the completion of the projects. A House of Risk (HOR) approach was used to analyze the data.\u0000Research results show that (1) Cirebon Regency Sports Facilities Building (Eastern Tribune Development) project has 14 risk events and 17 identified risk causes that cause delays. (2) Control factors that cause delays in project completion include: material factors, contract document factors, project owner factors, and contractor and design consultant factors, and (3) delay risk management options, including: (a) good communication and coordination. with the owner; (b) apply a comprehensive planning approach to procurement of materials, (c) coordinate current project drawings between consultants and field workers, (d) contact consultants and supervisors.","PeriodicalId":419103,"journal":{"name":"Journal of Green Science and Technology","volume":"20 8","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140230772","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"CORRELATION ROAD GEOMETRIC ON ROAD DAMAGE","authors":"Y. Astor, Ananda Amatory Zahra, A. V. Sihombing","doi":"10.33603/jgst.v8i1.124","DOIUrl":"https://doi.org/10.33603/jgst.v8i1.124","url":null,"abstract":"The implementation of safe road infrastructure can be defined by the minimum number of traffic accidents that occur on these roads. Traffic accidents can caused by several factors, encompassing the geometric attributes of the road, characteristics of vehicles, human elements, and environmental conditions. Previous studies have identified specific geometric features, including superelevation, degree of curvature, road slope, and shoulder type, as influential factors in traffic accidents. Simultaneously, the state of the pavement, characterized by issues such as rutting, potholes, IRI value, and skid resistance, also plays a crucial role in traffic accident. The interplay between road geometric and pavement conditions underscores the importance of effective road management for ensuring safety. Existing research highlights a correlation between road geometric and road damage, with the Pavement Condition Index (PCI) directly correlating with road and shoulder width, and inversely correlating with transverse and longitudinal road slope. This phenomenon is, in part, attributed to heightened shear strain on narrow road shoulders and a reduction in the resilience modulus value of the subgrade on sloped roads.","PeriodicalId":419103,"journal":{"name":"Journal of Green Science and Technology","volume":"51 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140228865","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"THE EFFECT OF TEMPERATURE AND WATER CONDUCTIVITY IN HOT BASIN TOWARD EFFECTIVENESS OF COOLING TOWER ON UTILITY UNIT PT. X","authors":"Indah Dhamayanthie, Y. Mulyani","doi":"10.33603/jgst.v7i1.11","DOIUrl":"https://doi.org/10.33603/jgst.v7i1.11","url":null,"abstract":"PT X is one of the Reviews largest ethanol producing plant in Indonesia, PT X located ± 15 km the northeast of Solo or 110 Km to the south of Central Java, SeAprilang. Cooling Tower is a tower or building of water circulation directly or indirectly contact with hot water and then converted into cold water expected that a number of heat from a fluid to another fluid. The Cooling Tower operates According to the diffusion principle, where temperature changes can result in a difference in the rate of temperature displacement. From the process in the cooling tower unit there are Several variables contained in the cooling towers ranging from the temperature and water conductivity in the hot basin. Obtained from the variables can be used to analyze the effectiveness of the cooling tower unit. When the conductivity contained in the water in the basin of hot high then the effectiveness of cooling tower will Decrease, likewise vice versa. And the value of effectiveness Obtained range of 76.12% - 87.80%. Where the company's standard value is 75% effectiveness. There are Several factors Determining the high value of conductivity values such as chemical mixing, high temperature in the cooling tower, and the temperature around the cooling tower.","PeriodicalId":419103,"journal":{"name":"Journal of Green Science and Technology","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-08-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114326726","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"ANALYSIS AND DESIGN REINFORCED CONCRETE CONSTRUCTION STRUCTURE OF 4 FLOOR HOTEL IN KUNINGAN","authors":"Tira Roesdiana, Renaldi Indra Perdana","doi":"10.33603/jgst.v7i1.15","DOIUrl":"https://doi.org/10.33603/jgst.v7i1.15","url":null,"abstract":"Planning for a 4-storey hotel in Kuningan is projected to support supporting facilities for the tourism sector in Kuningan Regency, supporting facilities like this are really needed by Kuningan Regency which has great potential in the tourism sector and is proven by the continuing increase in the number of tourists every year, with the development of Kuningan Regency and the increasingly widespread the construction of multi-storey buildings is needed planning in order to make efficient use of land. To support the availability of tourism support facilities, this research will examine the planning of hotel building structures based on SNI 2847-2019, SNI 1727-2020 and SNI 1726-2019 and calculate the budget plan for the structural work. Referring to these rules, the dimensions of the structural elements and the need for structural reinforcement can be produced that meet the rules and can also support the work force and loads received on a building including earthquake loads, wind loads and rain loads. The cost of building a 4-storey hotel building in this study is Rp. 26,712,400,000.00 (Twenty Six Billion Seven Hundred Twelve Million Four Hundred Thousand Rupiah), and the cost of building a one square meter building is Rp. 4,345,716.00 (Four million three hundred forty-five million seven hundred and sixteen thousand rupiah).\u0000 ","PeriodicalId":419103,"journal":{"name":"Journal of Green Science and Technology","volume":"52 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-08-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123838589","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"ANALYSIS OF MAPPING OF THE LEVEL OF FLOOD PRONECTION IN BOJONEGORO REGENCY BASED ON GEOGRAPHIC INFORMATION SYSTEM","authors":"Mushthofa Mushthofa, M. Qomaruddin","doi":"10.33603/jgst.v7i1.13","DOIUrl":"https://doi.org/10.33603/jgst.v7i1.13","url":null,"abstract":"Floods are natural disasters that often occur in various parts of the world, especially in flood-prone areas. Floods occur when water from rivers, lakes or seas overflows beyond its holding capacity. Floods can cause great damage to infrastructure, plants, animals and people. To overcome floods that occur frequently every year, it is necessary to map areas prone to flooding accurately and quickly using GIS which can be used to accurately monitor the location and area of ​​the area that is experiencing flooding. This study aims to analyze flood-prone areas and compile maps of flood-prone areas and describe the conditions of flood-prone areas in Bojonegoro Regency based on Geographic Information Systems (GIS). Data processed using GIS include: RBI Map of Bojonegoro Regency, River Map, Soil Type Map, Rainfall Data, Landsat Imagery Data, Flood incident data in Bojonegoro Regency. From the results of data processing, the results of the analysis are as follows: The level of flood-prone areas in Bojonegoro Regency is divided into 3 classes, namely: very vulnerable class of 49,963.671 Ha or around 21.66% of the sub-districts in Bojonegoro including the District: Margomulyo , Ngraho, Padangan, Kasiman, Malo, Purwosari, Trucuk, Kalitidu, Ngasem, Bojonegoro, Kapas, Dander, Balen, Kanor, Baureno, Sumberrejo, Kepohbaru and Gondang. The vulnerable class of 173,162.171 Ha or around 75.05% is in sub-districts including: Margomulyo, Ngraho, Tambakrejo, Kedewan District, Malo, Trucuk, Sekar, Ngambon, Ngasem, Gondang, Bubulan, Dander, Temayang, Sugihwaras and Kedungadem. The non-prone class is 7,580.157 ha or 3.29% in the sub-districts including: Margomulyo, Ngraho, Tambakrejo, Kedewan, Malo, Trucuk, Sekar, Ngambon, Gondang, Temayang, Sugihwaras and Kedungadem. Areas that have a high level of vulnerability are around the Bengawan Solo River which crosses Bojonegoro Regency. This can be caused because the area around the Bengawan Solo River has a height of <25 m and frequent flooding from the upstream and tributaries of the Bengawan Solo River.","PeriodicalId":419103,"journal":{"name":"Journal of Green Science and Technology","volume":"46 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-08-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115503945","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"THE INFLUENCE OF LEVEL CROSSINGS ON ECONOMIC GROWTH AND SOCIAL DYNAMICS IN CIREBON CITY","authors":"Shinta Novriani, Mira Lestira Hariani, Fathur Rohman","doi":"10.33603/jgst.v7i1.12","DOIUrl":"https://doi.org/10.33603/jgst.v7i1.12","url":null,"abstract":"Cirebon City is one of the metropolitan areas stipulated in PP No. 26 of 2008 namely RTRWN as a National Activity Center (PKN) in developing metropolitan areas, especially in Ciayumajakuning area. The Cirebon City has become the center of economic growth, resulting in an increase in the flow of urbanization and in line with social dynamics that must be considered due to urban city activities. One of the impacts of urban cities is the increase in traffic density, causing a decrease in traffic performance. The purpose of this study is to determine the existing conditions of railroad level crossings in Cirebon City and see their impact on traffic performance, social dynamics and economic growth in Cirebon City.  The research method used is a survey method, including traffic volume surveys, train frequency surveys, and calculating queue lengths and calculating delays.  Based on the result of a survey on 8 roads in the Cirebon City with an average capacity of 3191 smp/hour, the degree of saturation is 0.5, the Level of Service value is C, which means the flow is stable, the speed can be controlled by traffic. However, if it is review based on an economic analysis related to the loss of community income due to level crossings if it is assumed that the average income of the people of Cirebon City is IDR 2.304.943.51 each individual experiences losses ranging from IDR 0 – IDR 768.314 for one month depending on the how long the individual experiences waiting time at a level crossing. If analyzed based on fuel consumption, each individual experiences a loss of IDR 0 – IDR 30.294 per month depending on the waiting time and the type of fuel used and if it is associated with the economic growth of Cirebon City, it is expected to increase the contribution of GRDP for each sector and respondents feel that level crossing are very important affect their travel interest.","PeriodicalId":419103,"journal":{"name":"Journal of Green Science and Technology","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-08-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134293076","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"DESCRIPTION OF NOISE IN THE COMPRESSOR AND GENERATOR AREA AT PT PERTAMINA EP ASSET 3 TAMBUN FIELD – BEKASI","authors":"Pipit Marfiana","doi":"10.33603/jgst.v7i1.14","DOIUrl":"https://doi.org/10.33603/jgst.v7i1.14","url":null,"abstract":"PT Pertamina EP Asset 3 Tambun Field is a state-owned company engaged in Production Exploration, in the process this company has tools that must pay attention to the noise level, namely Compressors and Gensets. Compressors and generators are very influential on hearing loss in workers, therefore efforts to prevent hearing loss must be carried out. The objectives to be known are to know the noise conservation program, Standard Operating Procedures (SOP) in implementing noise conservation, and Implementation of Noise Conservation in Compressor and Genset Areas. This research method uses direct observation, interviews and literature studies. The results show that the Hearing Conservation Program has 7 (seven) components, namely: noise exposure survey, noise control, worker training, personal protective equipment, audiometric examination, recording and reporting, program assessment. The procedure used refers to the Individual Work Procedure (TKI) for Noise Measurement. The implementation of the Noise Measurement Program is carried out by the contractor once every 1 (one) year or every time there is a process change or a new tool. The Hearing Conservation Program must continue to make continuous improvements. It should be noted in monitoring workers in the Genset and Compressor area so that workers always use hearing protection equipment.\u0000 ","PeriodicalId":419103,"journal":{"name":"Journal of Green Science and Technology","volume":"45 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-08-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129724581","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}