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INDONESIA
Inersia : Jurnal Teknik Sipil dan Arsitektur
Published by Universitas Negeri Yogyakarta
ISSN : 0216762X     EISSN : 2528388X     DOI : -
Core Subject : Engineering,
Civil Engineering, Building, Construction & Architecture
INERSIA is stand for INformasi dan Ekspose hasil Riset Teknik SIpil dan Arsitektur. This scientific journal is managed by the Department of Civil Engineering and Planning Education, Faculty of Engineering, Yogyakarta State University, in cooperation with the Persatuan Insinyur Indonesia (PII). It publishes and disseminates research results from lecturers and post graduate students from various universities in Indonesia, which has contributed to the development of science and technology, especially in the field of Civil Engineering and Architecture. INERSIA is published twice a year, in May and December.
Arjuna Subject : -
Articles 312 Documents
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Effects of Gravel Percentage to Compaction Density and Stability of Embankment Sukmawati, Eka; Solin, Dian Purnamawati; Farichah, Himatul
INERSIA lnformasi dan Ekspose Hasil Riset Teknik Sipil dan Arsitektur Vol. 20 No. 1 (2024): May
Publisher : Universitas Negeri Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21831/inersia.v20i1.65825

Abstract

Embankments are frequently used in the construction of road, railway, airport, dams and other types infrastructure. Soil compaction is a crucial part of the construction process of embankment. Thus, soil compaction needs to be conducted and investigated in such a way so embankment will not experience large settlement that could lead to collapse. Generally, soil compaction density testing is performed using the sand cone method according to ASTM D-1556. The material used in this test is not carefully considered, which may lead to inaccurate results. In this study, the sand cone correction test according to ASTM D-4718 which consider the percentage of gravel is established to identify the compaction density of embankment and the effect to its stability. 16 secondary data of compaction density have been collected from the construction of embankment. According to the data, the compaction density of the embankment has met the specifications. The relationship between the gravel percentage and the compaction density is obtained. With a determination coefficient (R2) value of 0.805, it can be understood that these two variables have a highly significant correlation. Furthermore, to understand the relationship between the compaction density and the stability of the embankment, a slope stability analysis was conducted on the embankment using the Fellenius method. The result shows that when the compaction density of the embankment meet the specifications, embankment is stable with the safety factor (SF) of 1.511. Furthermore, both variables have a very strong relationship. The safety factor of the embankment is increased as the compaction density increases.
Evaluation of Degree of Consolidation, Over Consolidation Ratio and Coefficient of Consolidation from CPTu tests in Alluvium Clays Lie, Edwin; Lim, Aswin
INERSIA lnformasi dan Ekspose Hasil Riset Teknik Sipil dan Arsitektur Vol. 19 No. 2 (2023): December
Publisher : Universitas Negeri Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21831/inersia.v19i2.58976

Abstract

Soft soil was found in several areas in Indonesia, one of them is in Kalimantan Island, which the soft soil in the island mostly formed by Alluvium.  One of the characteristics of the soft soil is that they are likely still in under consolidating stage. The usage of CPTu was found to be suitable to the soft soil as the device can record small numbers continuously and able to record pore water pressure. Key features in performing CPTu in under consolidating soft soil is the dissipation test. However, often the dissipation test ended before the 50% excess pore pressure dissipated, which causes commonly used method for interpretation unable to estimate u50. Inverse time (Whittle et. al., 2000; Lim et. al., 2014) and inverse square root time (Liu et. al., 2014) method was developed to overcame the limitation. Rahardjo et. al. (2016) also developed method for obtaining degree of consolidation (and OCR) using pore pressure ratio parameter (Bq) obtained from CPTu.  Geotechnical investigation comprised advancing several cone penetration testings (CPTu) were carried out after failure occurred in a relatively flat area (RL +5m to +12m) after having built waste dump embankment to +70m elevation. Soft soil with 15m to 30m thickness was found beneath the embankment. This paper presents comparison of coefficient of consolidation using Teh & Houlsby (1991) method using parameters derived from inverse time and inverse square root time, also comparison for degree of consolidation and OCR in the Alluvium clays based on the dissipation data obtained from the testings.  Result showed that the Alluvium clays in the upper 10m already over consolidated while between RL 0 to -20m are still under consolidating, with parameters obtained using inverse time and inverse square root time generally showing close value.
Studies of Improving Drinking Water Quality in the Kalurahan Banaran Kabupaten Kulon Progo Using Porous Concrete Filter Arviananda, Rr. Dita; Kamulyan, Budi; Nurrochmad, Fatchan
INERSIA lnformasi dan Ekspose Hasil Riset Teknik Sipil dan Arsitektur Vol. 19 No. 2 (2023): December
Publisher : Universitas Negeri Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21831/inersia.v19i2.64125

Abstract

Some citizens of the Kalurahan Banaran Kabupaten Kulon Progo everyday use water that has an iron content (Fe) of 8.8 mg/L and a turbidity of 120 NTU, which is above the limit set by the Minister of Health's Regulation RI Number: 2 Tahun 2023 on the Quality Requirements of Drinking Water. To solve this problem, research has been conducted to reduce Fe and turbidity by using porous concrete filters. Three models of porous concrete A (porousity 0.42), B (porousity 0.44), and C (porousity 0.46), were used to filter water samples using two aerator diffusers at speeds of 3 L/h and 6 L/hour on each porous concrete filter. The results of the study showed that at an aeration rate of 3 L/hour, there had been a successive decrease in turbidity and Fe from 14.9 NTU to 1.38 NTU and 1.64 mg/L to 0.14 mg/L (filter A); 80 NTU to 0.5 NTU and 6.55 mg/L to 0.02 mg/L (filter B); 80 NTU to 0.1 NTU and 6.5 mg/L to 0 mg/L (filter C). For an aeration rate of 6 L/hour, there had been a successive decrease in turbidity and Fe from 80 NTU to 0.82 NTU and 6.55 mg/L to 0.05 mg/L (filter A); 89.8 NTU to 0.28 NTU, and 7.8 mg/L to 0.01 mg/L (filter B); 80 NTU to 0.28 NTU and 6,55 mg/L to 0 mg /L (filter C). The results show that the porous concrete filter can be considered an alternative to drinking water treatment in the Kalurahan Banaran Kabupaten Kulon Progo.
The Shift of the Slow Tourism Concept During the Period of the Covid-19 Pandemic at Yabbiekayu Eco-Bungalows Putri, Angela Savina; Widyastuti, Dyah Titisari
INERSIA lnformasi dan Ekspose Hasil Riset Teknik Sipil dan Arsitektur Vol. 20 No. 1 (2024): May
Publisher : Universitas Negeri Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21831/inersia.v20i1.72442

Abstract

Even though it was affected by the Covid 19 pandemic, tourism actors are trying to persist in improving and developing the quality of tourist travel. One way that tourism actors do this is by making changes to the implementation, namely the concept of slow tourism in a tourist trip. The slow tourism concept is a tourism concept that focuses on improving the quality of travel by considering the ecological conditions of the environment, reducing emissions, and the welfare of the surrounding community, so as to create an authentic and unforgettable tourist trip. The study of the concept of slow tourism will not work without complete tourism components consisting of attractions, amenities, accessibility, accommodation and tourist activities. This research will discuss the concept of slow tourism in the tourism component which is the basis for changes in the application of the concept of slow tourism in the period before, during and after the Covid 19 pandemic at Yabbiekayu Eco Bungalows and the Timbulharjo Village area. This research discusses the extent of changes in the application of the slow tourism concept to tourist trips as well as the factors that influence changes to a tourist trip in the period before, during and after the Covid 19 pandemic at Yabbiekayu Eco Bungalows. The method used is descriptive qualitative, by collecting interview and observation data. The results of the research carried out will show the extent of changes in the concept of slow tourism in the period before, during and after the Covid 19 pandemic in Timbulharjo Village with the case study of Yabbiekayu Eco Bungalows. These changes will be identified in accordance with the research time period that has been determined, then a conclusion will be made regarding how dynamic and consistent the changes in the slow tourism concept that occurred during the period before, during and after the Covid 19 pandemic at the research locus, namely at Yabbiekayu Eco Bungalows and in the village Timbulharjo, Bantul, Yogyakarta.
Analysis of Service Performance for Intermodal Facilities in The Area of Asrama Haji and Bumi Sriwijaya Stations Haris, Willi; Malkhamah, Siti; Suparma, Latif Budi
INERSIA lnformasi dan Ekspose Hasil Riset Teknik Sipil dan Arsitektur Vol. 20 No. 1 (2024): May
Publisher : Universitas Negeri Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21831/inersia.v20i1.64153

Abstract

The integrated intermodal service system between the South Sumatra Light Rail Transit (LRT) and road-based transportation modes such as the Palembang Bus Rapid Transit (BRT) and Angkot Feeder Musi Emas still has shortcomings, particularly in the areas of the Asrama Haji and Bumi Sriwijaya Station. This research is conducted to observe the conditions of the physical facilities, payment integration, and schedules at both stations, as well as to examine the regulations in meeting the standards of ideal pedestrian physical facilities, which are then compared with passenger perceptions. This research utilizes the methods of crosstabulation analysis and Importance Performance Analysis (IPA). Crosstabulation analysis is used to determine the relationship between respondents' sociodemographic and their travel characteristics. Importance Performance Analysis (IPA) is used to assess passenger perceptions of the performance quality of intermodal facilities. Based on the research finding, according to passengers perceptions of 49 service attributes, there are 20 attributes that have a high level of importance but low performance, indicating the existence of three service provision needs that need to be prioritized for improvement. First, the provision of adequate and disability-friendly sidewalk facilities. Second, the provision of pedestrian crossing facilities. Third, the access to and from the node that is free from traffic conflicts. The recommended solutions include the construction of sidewalks connected to the node points, built higher than the road surface, installation of guiding block, barrier posts, and ramps at each end of the sidewalk, construction of an overpass (JPO) at the Asrama Haji Station and a pelican cross at the Bumi Sriwijaya Station, and the regulation of transit areas to prevent vehicles from parking and waiting at the entrance and exit points of the node.
Parametric Study on The Bearing Capacity of Down-hole Dynamic Compaction Nulya M, Anisya Aura; Solin, Dian Purnamawati; Farichah, Himatul
INERSIA lnformasi dan Ekspose Hasil Riset Teknik Sipil dan Arsitektur Vol. 19 No. 2 (2023): December
Publisher : Universitas Negeri Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21831/inersia.v19i2.65822

Abstract

The DDC method is well known as Down-Hole Dynamic Compaction, an effective ground treatment method. DDC combines dynamic compaction and soil replacement methods to enhance bearing capacity, reduce settlement, minimize the potential for collapse, and mitigate liquefaction. DDC has been commonly used to stabilize collapsible soil, DDC basically forms a column inside the soil stratum which is similar to a stone column except DDC materials are put in sequence and then compacted by using DDC hammer, this is known as the self-tamping method. DDC is considered as a suitable method for soft soil improvement. This study modeled DDC as reinforcement for runway area which is predominantly soft soil in the study location. DDC is modeled with various dimension and spacing to assess its impact on bearing capacity and settlement, thereby simplifying the selection of suitable dimension during installation. The results show that the stress induced by external loads on Down-hole Dynamic Compaction (DDC) rises in correlation with the spacing between DDC installations. The peak stress was documented on a DDC unit with a 1-meter diameter positioned at a distance of 2.5 meters from the other DDC units, measuring 83.9 kN/m2. The highest stress level was recorded in the soil surrounding a DDC unit with a 1.5-meter diameter, which was positioned 3 meters away from other DDC units, measuring 157.89 kN/m2. The highest bearing capacity was achieved when a DDC with a diameter of 1.5 meters was positioned at a distance of 3 meters, resulting in a bearing capacity value of 1407.32 kN/m2.
Application of Smoothed Particle Hydrodynamics Method for Tsunami Force Modeling on Building with Openings Anggita, Putra; Triatmadja, Radianta; Yuwono, Nur
INERSIA lnformasi dan Ekspose Hasil Riset Teknik Sipil dan Arsitektur Vol. 19 No. 2 (2023): December
Publisher : Universitas Negeri Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21831/inersia.v19i2.54249

Abstract

Smoothed Particle Hydrodynamics (SPH) serves as a numerical technique extensively employed for simulating free surface flow. The computational intricacy of the SPH method arises from the numerous computations of a particle's properties, derived from interactions with surrounding particles. To address this complexity, experts developed DualSPHysics. This study employs the SPH method, specifically the DualSPHysics application, for tsunami modeling. To accurately represent tsunami characteristics, precise numerical parameters are essential for numerical modeling. This research provides valuable insights into optimizing numerical parameters for accurate SPH simulations. Therefore, the research aims to identify the exact values of crucial parameters in DualSPHysics model. Validation of numerical calculations involves comparing the tsunami forces, as simulated by DualSPHysics, with secondary data obtained from physical experiments results. The findings highlight the significance of particle size (dp) as a crucial numerical parameter in DualSPHysics modeling. A smaller particle size contributes to model's accuracy. The determination of the particle size must account for model's shortest characteristic (s). According to simulations those have been carried out, it is recommended to set the maximum limit value of dp/s at 1/3.67 to achieve precise calculation. Furthermore, the DualSPHysics simulation demonstrates a reduction in force due to the opening configuration (n).
Bridge Assessment Analysis using Sufficiency Rating Method (Case Study of The Mungkung Overpass) Lau, Debora; Aminullah, Akhmad; Triwiyono, Andreas
INERSIA lnformasi dan Ekspose Hasil Riset Teknik Sipil dan Arsitektur Vol. 20 No. 1 (2024): May
Publisher : Universitas Negeri Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21831/inersia.v20i1.71348

Abstract

Bridges play a crucial role in connecting various routes and water bodies, necessitating regular monitoring to prevent potential hazards and losses due to deterioration. In Indonesia employs the Bridge Management System (BMS) for decision-making regarding maintenance, repair, and replacement activities, its reliance on a limited set of criteria may lead to uncertainties in bridge condition assessmsents. This study explores the Sufficiency Rating (SR) method as an alternative for assessing bridge feasibility. By considering multiple factors, including structural adequacy, serviceability, functionality, and public interest, the SR method offers a comprehensive approach to bridge evaluation. An analysis of the Mungkung Overpass on the Ngawi Kertasono toll road was conducted to evaluate the effectiveness of the SR method. The findings classified the bridge as excellent, indicating no immediate need for treatment. However, the SR method has limitations, particularly in visually assessing damage to superstructure and substructure elements, which may introduce subjectivity. Overall, this research contributes to the ongoing development of bridge assessment methodologies in Indonesia, aiming to enhance decision-making processes and ensure the safety and longevity of bridge infrastructure. After analyzing the data obtained through the implementation of the SR method, it was revealed that S1 achieved a value of 45%, S2 achieved 23%, S3 achieved 12.7%, and S4 achieved 6%. The total actual value of the four parameters calculated based on the SR method was 74.7%, with a difference of 25.3% from the maximum value. These findings clearly illustrated that the bridge satisfied the criteria for deficiency, thereby necessitating comprehensive rehabilitation measures to be undertaken.
Spatio-Temporal Analysis of Vegetation Index Change on Land Surface Temperature in Yogyakarta Special Region Using MODIS Imagery (2000-2023) Nugroho, Rheza Tri
INERSIA lnformasi dan Ekspose Hasil Riset Teknik Sipil dan Arsitektur Vol. 20 No. 1 (2024): May
Publisher : Universitas Negeri Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21831/inersia.v20i1.72179

Abstract

Yogyakarta has become a province renowned for its abundance of tourist destinations and learning opportunities for students from all over Indonesia. Temperature and vegetation density are key factors contributing to comfort in both academic pursuits and recreational activities. This study utilizes NDVI (Normalized Difference Vegetation Index) and LST (Land Surface Temperature) to determine these crucial parameters. MODIS imagery serves as a vital data source for analyzing NDVI and LST. The aim of this research is to comprehend the environmental dynamics of DIY (Yogyakarta Special Region) by exploring the relationship between NDVI and LST. Through the Pearson correlation method, the relationship between these variables is deeply evaluated. The analysis reveals a significant correlation between changes in NDVI and LST, indicating a complex interaction between vegetation and land surface temperature. However, these significant findings have minimal impact on Yogyakarta City and Sleman, which serve as the focal points of community activities in Yogyakarta. These changes can be attributed to various factors, including changes in land use, urbanization, and climate variability, which show weak correlation values when associated with vegetation. Another finding is that Yogyakarta City exhibits the most distinct response in vegetation density and surface temperature compared to the surrounding four cities. This is attributed to Yogyakarta City being the administrative center and economic hub of DIY. These findings provide a deeper understanding of the environment's response to these factors in DIY. By employing spatial and temporal analysis, this study offers valuable insights for climate change mitigation efforts and adaptation to the evolving environmental dynamics.
An Exploration of Cyclists' Preferences that Influence Route Choice to Recreation in Yogyakarta during COVID-19 Isheka, Raihan Pasha; Habibi Kamal, Muhammad Iqbal; Suryadwanti, Novia; Radiansyah, Kusuma Aji
INERSIA lnformasi dan Ekspose Hasil Riset Teknik Sipil dan Arsitektur Vol. 19 No. 2 (2023): December
Publisher : Universitas Negeri Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21831/inersia.v19i2.64870

Abstract

People's travel behavior has changed significantly as a result of the COVID-19 pandemic. The growing number of cyclists, particularly those who ride for recreation, and how they view the options for recreational riding routes are two of the elements that are being impacted. Cycling route preferences may be viewed differently than they were prior to the pandemic. It will be crucial to understand cyclists' behavior while choosing their routes in order to choose the development, especially for cycling infrastructure. This research aims to explain the perceptions of recreational cyclists regarding the influential factors in determining their routes. The data for this study was collected from 340 respondents who use bicycles for recreation in Yogyakarta City. A questionnaire was used to collect data by examining the factors that influence cyclists in determining their routes, such as infrastructure conditions, traffic conditions, environmental conditions, and travel plans, using a Likert scale. Through the questionnaire, socio-demographic characteristics of the respondents were obtained, revealing that the majority were male, with incomes below Rp 1,500,000, and aged below 25 years. The analysis methods used in this study were descriptive analysis, importance score analysis, and chi-square tests between the characteristics of the cyclists and each factor. The results showed that the most important factors for recreational cyclists in determining their routes in Yogyakarta City are the availability of street lighting facilities (4.34), good road conditions (4.31), the presence of dedicated bicycle lanes (4.30), low traffic volume (4.30), and the natural environment (4.29). Additionally, the frequency of recreational cycling statistically correlates significantly with some factors, such as the availability of bicycle lanes, bike boxes, and low pollution levels.

Page 27 of 32 | Total Record : 312

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