EPI International Journal of Engineering最新文献_第6页

Study of Environmental Carrying Capacity on the Development of Formal Housing in Moncongloe District, Maros Regency 马洛斯县Moncongloe区正规住房发展的环境承载力研究

EPI International Journal of Engineering Pub Date : 2021-08-30 DOI: 10.25042/10.25042/epi-ije.082021.03

S. Amin, N. Amri, A. Rasyid, Muhammad Faathir Nugraditama, Syifa Beby Alisha

{"title":"Study of Environmental Carrying Capacity on the Development of Formal Housing in Moncongloe District, Maros Regency","authors":"S. Amin, N. Amri, A. Rasyid, Muhammad Faathir Nugraditama, Syifa Beby Alisha","doi":"10.25042/10.25042/epi-ije.082021.03","DOIUrl":"https://doi.org/10.25042/10.25042/epi-ije.082021.03","url":null,"abstract":"Moncongloe District is an area with a relatively high population growth rate and distribution of housing, especially formal housing. This condition has implications for the tendency of increasing problems related to the carrying capacity of the environment and the suitability of land functions in the area. Therefore, it is necessary to harmonize the development of formal housing with the carrying capacity of the environment so that the negative impact of the phenomenon of formal housing development in this area can be avoided. The purpose of this study is to analyze the environmental carrying capacity of the development of formal housing for the prediction of the next 20 years. The analytical method used is a combined method of qualitative and quantitative analysis with a focus on the study of population projections, land availability and needs, and the carrying capacity of residential land. The results showed that the population in Moncongloe District in 2021 was 23,738 people, while the projected population in 2041 was 46,779 people, which means an increase of 97.06%. The results of the analysis of land availability show that 50% of the area of Moncongloe District is recommended for the development of residential land, including formal housing. The value of the carrying capacity of residential land (DDPm) in Moncongloe District in 2021 is 20.7 while in 2041 it is 20 so it can be concluded that the environmental carrying capacity in Moncongloe District can still accommodate the development of settlements for the next 20 years. ","PeriodicalId":387754,"journal":{"name":"EPI International Journal of Engineering","volume":"54 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123203713","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}

引用次数: 0

Basic Study on Deformation Evaluation of Steel Wire Mesh for Rational Gabion Structure Design 合理格宾网结构设计中钢丝网变形评估的基础研究

EPI International Journal of Engineering Pub Date : 2019-08-31 DOI: 10.25042/epi-ije.082019.04

H. Nakazawa, T. Nishi, H. Kurihara, D. Suetsugu, T. Hara

{"title":"Basic Study on Deformation Evaluation of Steel Wire Mesh for Rational Gabion Structure Design","authors":"H. Nakazawa, T. Nishi, H. Kurihara, D. Suetsugu, T. Hara","doi":"10.25042/epi-ije.082019.04","DOIUrl":"https://doi.org/10.25042/epi-ije.082019.04","url":null,"abstract":"Gabion structures are used in a variety of ways in Japan and around the world because they allow for the creation of simple structures at highly reasonable construction costs and completion periods. Previous earthquake damage surveys have shown that, in many cases, gabion structures did not collapse even though deformation was allowed, and have demonstrated that the wire mesh used in their construction has a high confinement effect on the stones filling the gabion. Despite this, gabions have not been actively utilized, nor have they been used to construct permanent structures in Japan because the design and construction of such structures are based on experience, and a standardized design method has not been developed. Hence, in order to facilitate development a design method for gabion-based structures, we must first go back to the basics and establish a detailed explanation of the wire mesh deformation mechanism of such structures. In this study, we performed tensile tests on wire meshes of different shapes in order to determine their strength and deformation characteristics and then conducted numerical analyses using the results obtained. The tensile tests revealed that deformation characteristics differed depending on the mesh shape and tensile direction. We also showed that the direction in which the tension acts and the mesh nodes are important, and that the test results could be reproduced via numerical analysis with the finite element method by using beam elements.","PeriodicalId":387754,"journal":{"name":"EPI International Journal of Engineering","volume":"42 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125506212","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}

引用次数: 1

Landslide Disaster Risk Assessment Model in Soppeng Regency, South Sulawesi 南苏拉威西索普蓬县滑坡灾害风险评估模型

EPI International Journal of Engineering Pub Date : 2019-08-31 DOI: 10.25042/epi-ije.082019.01

hafidh pradipta arrasyid, S. Hamzah

{"title":"Landslide Disaster Risk Assessment Model in Soppeng Regency, South Sulawesi","authors":"hafidh pradipta arrasyid, S. Hamzah","doi":"10.25042/epi-ije.082019.01","DOIUrl":"https://doi.org/10.25042/epi-ije.082019.01","url":null,"abstract":"Landslide disaster risk assessment model has been proposed for Soppeng Regency which is located in the central part of South Sulawesi Province. Some areas in this regency are classified as landslide prone area based on its geological condition. This study is aimed to assess the landslide vulnerability level and produce a landslide vulnerability map by using mapping method as a basis to model the risk reduction assessment. The component of disaster risk assessment consists of threats, vulnerabilities, and capacities. These components are used to obtain the level of disaster risk in an area by calculating the potential for exposed lives, loss of property and environmental damage. The result shows that Soppeng Regency region has some areas that are prone to landslides with low-high levels. The Vulnerability Assessment is classified as medium level whereas the result of landslide disaster capacity assessment is also shown as medium level. Based on these analyses, it was concluded that Soppeng Regency had a high landslide threat index, with a medium exposed population index and a medium capacity index. The study of landslide disaster risk assessment in Soppeng Regency has shown that Soppeng Regency has been classified as landslide prone area with the medium risk level, especially in mountainous and river bank area. It is recommended that disaster risk assessment model should be used as one of the references for providing disaster risk mitigation plan in disaster risk reduction program.","PeriodicalId":387754,"journal":{"name":"EPI International Journal of Engineering","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128981948","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}

引用次数: 0

Study on Transverse Strength of the Deck-Container Ships due to Laying All Containers on Deck 甲板-集装箱船在甲板上布置集装箱时横向强度的研究

EPI International Journal of Engineering Pub Date : 2019-08-31 DOI: 10.25042/epi-ije.082019.14

Rosmani Munandar, A. Ardianti, G. Sitepu, A. M. Nugraha, H. Hamzah, Muhammad Ichsan Hayatuddin

{"title":"Study on Transverse Strength of the Deck-Container Ships due to Laying All Containers on Deck","authors":"Rosmani Munandar, A. Ardianti, G. Sitepu, A. M. Nugraha, H. Hamzah, Muhammad Ichsan Hayatuddin","doi":"10.25042/epi-ije.082019.14","DOIUrl":"https://doi.org/10.25042/epi-ije.082019.14","url":null,"abstract":"The strength of transversal structure of the ship has a great effect on the safety of ship. Shipswill experience conditions that affect the strength of the ships structure. A deck-container ships are the ships that all container are loaded on deck such as MV. Khendaga Nusantara series ships. The transversal strength of the ships is loaded mainly by the weight of cargolaying on deck.. This research aims to determine the transverse strength of a deck-container ship due to the all container loads on deck. The research was done by usingfinite element method throughmodeling transverse ship structure, the simulation is conducted by varying the amount and lay-out of containers on dec). The loads appliedto the model are side loads, bottomloads, and deck loads in according to BKI rules. The results shows that the stress that occurred in the web frame was 140,63 N/mm2due to the placement of the entire container on the deck(full loading). For ship structure response, a deformation of 2,86 mm occurred in the web frame area at maximum loading. Stress ratio that occurs in all ship’s structuredoes not exceed 1 in other words the working stress does not exceed the allowedstress according to BKI rules.","PeriodicalId":387754,"journal":{"name":"EPI International Journal of Engineering","volume":"36 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126852844","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}

引用次数: 5

The Corrosion Erossion of Ship Propeller Al 7075 Produced by Gravity Sand Casting 重力砂型铸造船舶螺旋桨Al 7075的腐蚀侵蚀

EPI International Journal of Engineering Pub Date : 2019-08-31 DOI: 10.25042/epi-ije.082019.13

Milka Rante, M. Syahid, O. Sutresman

引用次数: 1

Air Quality Characteristics in Junior High School Classroom with Natural Ventilation in Pangkep Regency 庞克普县自然通风初中教室空气质量特征

EPI International Journal of Engineering Pub Date : 2019-08-31 DOI: 10.25042/epi-ije.082019.11

Nur Mutmainnah, R. Mulyadi, B. Hamzah

{"title":"Air Quality Characteristics in Junior High School Classroom with Natural Ventilation in Pangkep Regency","authors":"Nur Mutmainnah, R. Mulyadi, B. Hamzah","doi":"10.25042/epi-ije.082019.11","DOIUrl":"https://doi.org/10.25042/epi-ije.082019.11","url":null,"abstract":"The indoor air quality room has turned out to be a major concern due to its adverse effects on human health. This is related to the level of activity of human spend almost 90 percent of their time indoors. This study aims to identify the characteristics of air quality in classrooms with natural ventilation systems in three different schools which vary in topography and the surrounding environment, namely coastal areas, lowlands, and mountains. Air quality measurement focuses on CO, CO2 concentration, total dust content, temperature, humidity, and airflow velocity. The statistical results showed significantly different (p <0.05) in air quality parameters among those three schools. The CO and CO2 concentrations in the three schools are below the recommendations required by DOSH and ASHRAE. This clarifies that a well-used of a natural ventilation system is able to maintain the air quality in the classroom. The measurement of total dust levels was above the threshold required by the Ministry of Health of the Republic of Indonesia No.1405/MENKES/SK/XI/2002. In addition, there was a significant relationship (p <0.05) between air pollutants and meteorological factors such as temperature and air humidity in the classroom. The study found that there was an influence of human activity level and the surrounding environment on the amount of pollutants concentration in the classroom.","PeriodicalId":387754,"journal":{"name":"EPI International Journal of Engineering","volume":"38 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125153302","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}

引用次数: 0

Evaluation of Numerical Analysis for Earthquake Resistance of Retaining Wall Using Gabions 格宾挡土墙抗震性能数值分析评价

EPI International Journal of Engineering Pub Date : 2019-08-31 DOI: 10.25042/epi-ije.082019.05

T. Nishi, T. Hara, H. Nakazawa, D. Suetsugu

{"title":"Evaluation of Numerical Analysis for Earthquake Resistance of Retaining Wall Using Gabions","authors":"T. Nishi, T. Hara, H. Nakazawa, D. Suetsugu","doi":"10.25042/epi-ije.082019.05","DOIUrl":"https://doi.org/10.25042/epi-ije.082019.05","url":null,"abstract":"In developing countries, gabions are widely used in several construction works, like road, river, countermeasures against slope failure and so on, because of their easy operation and low cost. In 2015 Nepal Gorkha Earthquake, a lot of retaining walls using gabions were not damaged against the strong earthquake because of their high flexibility. However, some deformation or declination were reported dpending on retaining wall types and ground conditions behind retaining walls. Therefore, in order to evaluate the earthquake resistance and residual deformations of retaining walls using gabions widely observed in Nepal, full-scale shake table tests and laboratory tests were conducted in previous studies. In this study, elemental simulations for determination of the analysis parameters based on the results of triaxial compression tests were carried out to check the validity of parameters. Then, a series of numerical analysis using proposed model was performed to reproduce the dynamic behaviors of full-scale shake table tests and evaluate the earthquake resistance of retaining wall using gabions. According to the results of these numerical analysis, it was confirmed that proposal model adequately could simulate the dynamic response of retaining walls in the full-scale shake table tests. and it was also cleared that the stepwise type retaining wall was superior to that of vertical type from the standpoint of earthquake stability against sliding and overturning.","PeriodicalId":387754,"journal":{"name":"EPI International Journal of Engineering","volume":"40 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126101239","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}

引用次数: 0

The Visitors’ Perception Toward the Comfort of Social Interaction in Public Space ( A Case Study in Karebosi Field Makasar) 游客对公共空间社会互动舒适度的感知(以喀喇波斯场为例)

EPI International Journal of Engineering Pub Date : 2019-08-31 DOI: 10.25042/epi-ije.082019.10

A. M. Ichsan, A. Harisah, A. M. Radja

{"title":"The Visitors’ Perception Toward the Comfort of Social Interaction in Public Space ( A Case Study in Karebosi Field Makasar)","authors":"A. M. Ichsan, A. Harisah, A. M. Radja","doi":"10.25042/epi-ije.082019.10","DOIUrl":"https://doi.org/10.25042/epi-ije.082019.10","url":null,"abstract":"Public space has an important role to incresase physical health and social interaction of city communities. Karebosi field is public space which is in the development priority by Makasar city government. Karebosi field is the most ideal facility to represent the concept of an open public space in Makasar. After going through revitalization process, the government still continues to reform and refine Karebosi field functions. This research aims to find out the visitors’ perception towards the comfort of social interaction in Karebosi field, and what factors which are influence them as well. This research was conducted in 2018 at Karebosi field, Makasar. The method used in this research is mixed method (qualitative – quantitative). The technique of data collection is done by evidentiary method through data triangulation (observation, questionnaire, and interview). The result of this research can be concluded that the facility in Karebosi field is quite successful in attracting the visitors to do sport activities in public space, yet the level of success is still not optimal because it is still in the range of 60.89%, it is due to the facility development that have not been varied, the facilities are considered as not being able to stimulate the diversity of social interaction and increasing the number in public space. Designing, Karebosi field is not able to give impression and meaning for the people who do the activities in it. It is expected to be a reference for Makasar government in formulating the steps to increase the service quality and the functions of Krebosi field in the future. \u0000 \u0000 ","PeriodicalId":387754,"journal":{"name":"EPI International Journal of Engineering","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133123905","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}

引用次数: 2

Polya Counting Theory Applied to Combination of Edge Conditions for Generally Shaped Isotropic Plates 多边形计数理论在一般形状各向同性板边缘条件组合中的应用

EPI International Journal of Engineering Pub Date : 2019-08-31 DOI: 10.25042/epi-ije.082019.16

Y. Narita

引用次数: 2

Prediction of Propeller Performance Using Computational Fluid Dynamics Approach 用计算流体力学方法预测螺旋桨性能

EPI International Journal of Engineering Pub Date : 2019-08-31 DOI: 10.25042/epi-ije.082019.15

N. A. Adam, A. Fitriadhy, W. Kong, F. Mahmuddin, C. Quah

引用次数: 2