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Correlation Between Visual Improvement and Behavior Change of Municipal Solid Waste Management in Jodipan and Ksatrian Village, Indonesia Sarli, Prasanti Widyasih; Zakiyya, Nida Maisa; Soewondo, Prayatni
IPTEK Journal of Proceedings Series No 6 (2017): The 3rd International Conference on Civil Engineering Research (ICCER) 2017
Publisher : Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j23546026.y2017i6.3302

Abstract

Indonesia, as a developing country, has many slum areas. Over the years, there have been many projects specifically targeting the improvement of slum areas, both at a national or regional level. One example of such project can be observed in Malang City, East Java, where visual improvements of a slum area is attempted by the application of colorfull paints throughout the settlements. Two of the initial projects are Jodipan and Ksatrian Village that are located on the riverside area of Brantas River, one of the biggest river in East Java. The original idea firstly came to Jodipan Village to improve the cleanliness of the area. As the Jodipan Village improved, this village became a local tourism area. Due to its success, the painting project was then adopted to the Ksatrian Village across the river. Before the project, the residents of the villages were used to throw their municipal solid waste to the river. Since the improvement projects ran, it has been found that the improvement can be linked to residents’ awareness for municipal solid waste management. This study focuses on the correlation of visual improvement and behavior change of municipal solid waste; and the differences between the correlations in each village (Jodipan and Ksatrian). A descriptive model was done by observation and questionnaire to the 48 residents of Jodipan Village and 69 residents of Ksatrian Village, with a tolerance for error of 0,1 and confidence level of 90%.
Experimental Study of Wind Flow in a Street Canyon between High-Rise Buildings Using PIV Herlien D. Setio; Prasanti Widyasih Sarli; Yongky Sanjaya; Doni Priambodo
Journal of Engineering and Technological Sciences Vol. 52 No. 5 (2020)
Publisher : Institute for Research and Community Services, Institut Teknologi Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5614/j.eng.technol.sci.2020.52.5.3

Abstract

In recent years there have been several occasions of failure of non-buildings such as billboard towers and pedestrian bridges around high-rise areas in urban Indonesia. Most cases did not occur during any particular high-speed wind gusts but rather during normal wind speed. This research aimed to show the increase in wind load for structures built between high-rise buildings. A simplified cluster of 4 symmetrical high-rise building was investigated. The study used a wind tunnel and a Particle Image Velocimetry (PIV) device in the experiment. Several angles of attack and also different distances between buildings were investigated to see the impact of these parameters on the wind flow between the buildings. Wind flow experiences an interaction flow in all central areas, which translates into an increase in speed. The change in distance between buildings changes the behavior of the flow in the cross area while a change in the angle of attack of the wind does not influence the amplification factor. The results show that there was an increase from 7 to 44% in wind speed due to the street canyons and that the highest amplification occurred with an angle of attack of 0°.
Peninjauan Parameterisasi Wind Gust saat Kejadian Konvektif dan Non-Konvektif: Studi kasus di Bandara Internasional Kertajati Muhammad Rafid Zulfikar; Muhammad Rais Abdillah; Prasanti Widyasih Sarli
Jurnal Ilmu Fisika Vol 15 No 2 (2023): September 2023
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jif.15.2.175-187.2023

Abstract

Wind gusts (gusts) are sudden increases in wind speed that potentially cause severe damage to infrastructure. Gusts occur within several seconds but numerical weather models typically predict future wind with a time step of tens of seconds or minutes. Therefore, a parameterization is needed to estimate gust. Gusts can be produced convectively and non-convectively depending on the presense of thunderstorm. The gust parameterization schemes may perform differently in both cases. In this study, five wind gust parameterization schemes were evaluated at the Kertajati International Airport. Based on simulations of three convective gust and three non-convective gust events using several evaluation metrics, we find that the best scheme for non-convectively driven gusts is the Turbulent Kinetic Energy (TKE) scheme, while the Hybrid scheme performs best for convectively driven gusts. However, the performance of Hybrid scheme during non-convective event is not so far behind TKE scheme. The Hybrid scheme was developed to work on both non-convective and convective events and this capability is evidently shown. The result could be useful to develop mitigation measures for strong wind incident that frequently occurs in Indonesia.
Analisis Faktor Penerimaan Sistem Pengelolaan Air Limbah Domestik Setempat Pada Permukiman Kumuh Tipologi Tepian Sungai Kota Pontianak Amy Angelia; Prayatni Soewondo; Nico Halomoan; Prasanti Widyasih Sarli; Ahmad Soleh Setiyawan
Jurnal Serambi Engineering Vol. 9 No. 4 (2024): Oktober 2024
Publisher : Faculty of Engineering, Universitas Serambi Mekkah

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Slum areas in Pontianak, such as the Panglima A. Rani and Kayu Manis areas along the Kapuas River, face significant domestic wastewater management challenges, including river pollution and health issues. To meet the SDGs 2030, the city government plans to implement a domestic wastewater management system using both centralised and localised approaches. In this study, the Unified Theory of Acceptance and Use of Technology (UTAUT) and structural equation modelling (SEM) are used to analyse the factors influencing the acceptance of sanitation technologies. The research includes both quantitative and qualitative analyses using PLS-SEM in Smart PLS V.3.0. The results indicate that performance expectancy, effort expectancy, social influence and facilitating conditions influence community acceptance, with the highest path coefficients observed for facilitating conditions (41.26%), followed by social influence (32.19%), effort expectancy (21.46%) and performance expectancy (5.09%). Facilitating conditions and social influence have a significant impact on community participation, with P-values < 0.05 and T-statistic values > 1.96.
Analysis of Individual Aspects in Riverbank Slums on Sustainable Sanitation Development (Case Study: Bima City, NTB, Indonesia) Gusmiati, Gusmiati; Soewondo, Prayatni; Awfa, Dion; Halomoan, Nico; Sarli, Prasanti Widyasih; Setiyawan, Ahmad Soleh
Journal of Engineering and Technological Sciences Vol. 56 No. 2 (2024)
Publisher : Directorate for Research and Community Services, Institut Teknologi Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5614/j.eng.technol.sci.2024.56.2.10

Abstract

Currently, 24.5% of the population of Bima City lack access to sanitation. The issue is predominantly concentrated in densely populated urban slums along the riverbanks, influenced by the cultural and societal context of Indonesian society. From 2021 to 2022, a comprehensive mixed-method study was conducted in three urban slums, applying the Integrated Framework for Sanitation Services (IFSS) to explore individual aspects within a socio-cultural context. Combining quantitative and qualitative methods, the research involved a household questionnaire survey and in-depth interviews (IDI). The study revealed that individual aspects are shaped by perceptions of the convenience of open defecation and latrine use as well as experiences with shared latrines, driving the adoption of private latrines. Challenges such as financial constraints and limited construction capabilities in urban slum communities often hinder latrine construction, though cultural and traditional values (adat) in the Bima community in urban slums help to alleviate these obstacles. A recommendation is made to enhance the monitoring of sanitation adoption progress, focusing on the sanitation system’s functioning and adherence to the sanitation hierarchy. Despite awareness of the importance of safe disposal, its impact on sanitation behavior in Bima City’s urban slums has been constrained, underscoring the imperative for effective behavior change communication strategies.
STRATEGI PENANGANAN SANITASI DI PERMUKIMAN KUMUH DENGAN PENDEKATAN PARTISIPASI STAKEHOLDER (STUDI KASUS KOTA BIMA, NUSA TENGGARA BARAT) Hutagaol, David Christian; Soewondo, Prayatni; Awfa, Dion; Setiyawan, Ahmad Soleh; Sarli, Prasanti Widyasih; Halomoan, Nico
Jurnal Reka Lingkungan Vol 11, No 3 (2023)
Publisher : Institut Teknologi Nasional, Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26760/rekalingkungan.v11i3.246-257

Abstract

ABSTRAKKebutuhan akan sanitasi merupakan salah satu kebutuhan dasar manusia sebagai bagian dari upaya perlindungan kesehatan dan mendorong peningkatan ekonomi melalui peningkatan kapasitas pemerintah kabupaten/kota untuk mengimplementasikan program sanitasi di Indonesia. Kota Bima sebagai lokasi studu dengan permasalahan sanitasi perlu didukung oleh stakeholder. Penelitian ini dapat melengkapi dokumen yang sudah dibuat. Penelitian ini dilakukan dengan metode campuran atau mixed method yang dilakukan secara kualitatif pada metode Stakeholder Analysis (SA) dan metode kuantitatif pada metode Social Network Analysis (SNA). Stakeholder Analysis dilakukan dengan focus group discussion (FGD) sedangkan Social Network Analysis dilakukan berdasarkan kuesioner yang diisi oleh peserta FGD saat acara FGD berlangsung. Hasil rangkaian penelitian di Kota Bima: teridentifikasi 52 stakeholder yang memiliki kepentingan terkait sanitasi di permukiman kumuh; terpetakan ada 8 key actors, 7 important actors, 6 interested actors, dan 9 additional actors ; teridentifikasi 4 influential stakeholders yang juga adalah key actors. Secara umum kekohesifan (density) semua jenis kerja sama pada Kota Bima tidak cukup baik, yaitu 7,7%. Diperlukan peningkatan kerja sama dengan Perusahaan Swasta, Masyarakat, dan Akademisi untuk penanganan sanitasi di permukiman kumuh Kota Bima. Kata kunci: sanitasi, kawasan kumuh, stakeholder analysis, social network analysis, Kota Bima ABSTRACTThe need for sanitation is one of the basic human needs as part of efforts to protect health and encourage economic improvement to increase the capacity of district/city governments to implement sanitation programs in Indonesia. Bima City as a study location with sanitation problems needs to be supported by stakeholders. This research was carried out using mixed methods which were generally carried out qualitatively using the Stakeholder Analysis (SA) method and quantitatively using the Social Network Analysis (SNA) method. Stakeholder Analysis was carried out using a focus group discussion (FGD) while Social Network Analysis was carried out based on a questionnaire filled out by FGD participants during the FGD event. The results of research series in Bima City: identified 52 stakeholders who have an interest in sanitation in slum settlements; there are 8 key actors, 7 important actors, 6 interested actors, and 9 additional actors; there are 4 influential stakeholders who are also key actors. In general, the cohesiveness (density) of all types of cooperation in Bima City is not good enough, namely 7.7%. There is a need to increase cooperation with private companies, communities and academics to handle sanitation in Bima City slums. Keywords : sanitation, slum area, stakeholder analysis, social network analysis, Bima City
Pemodelan Numerik Aliran Angin di Sekitar Gedung Tinggi Menggunakan Metode RANS Standard K-ε dengan Program OpenFOAM Sanjaya, Yongky; Priambodo, Doni; Sarli, Prasanti Widyasih; Setio, Herlien Dwiarti; Syariefatunnisa, Syariefatunnisa
MEDIA KOMUNIKASI TEKNIK SIPIL Volume 28, Nomor 1 (2022)
Publisher : Department of Civil Engineering, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1052.967 KB) | DOI: 10.14710/mkts.v28i1.37375

Abstract

Amplified wind loads around buildings could induce structural failure, thus making it important to understand the behavior of fluid flow between buildings. In this study, the analysis is performed using RANS, a computational fluid dynamics (CFD) simulation with faster computation time compared to other methods. OpenFOAM, an open-source software, is used to run the simulations. This study used a structured mesh with standard RANS k − ε turbulence model. Four symmetrical buildings with a scale of 1: 420 are used as the model of this study. Numerical modelling of different computational domain size and different degrees of fineness of the meshing is simulated to determine margin of errors. The result indicates that changes in computational domain has a significant effect on CFD analysis in lowering the error value in area with high flow speed ratio (U/U0> 1) to reach the acceptable error limit. Contrastingly, changes in the degree of fineness of the meshing do not give a significant change in error value. A relatively coarse meshing with fast computation time could give a similar result as A fine meshing model with longer computation time.
Permodelan Numerik Aliran Angin Pada Jalan Antara Bangunan Tinggi Dengan Modifikasi Sudut Datang Priambodo, Doni; Sanjaya, Yongky; Sarli, Prasanti Widyasih; Setio, Herlien Dwiarti
MEDIA KOMUNIKASI TEKNIK SIPIL Volume 28, Nomor 2 (2022)
Publisher : Department of Civil Engineering, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/mkts.v28i2.37220

Abstract

In fluid dynamics analysis, one of the things to do is to perform numerical modeling validated on the resultsof experimentation. In numerical modeling of wind flow there are several forms of modeling used includingRANS, LES, DNS, etc. where the modeling has its own advantages and disadvantages. Among these models,RANS is a model that has the cheapest computer expense compared to other models so that it has the highestworkability. Therefore, rans method testing (Reynolds Averaged Navier Stokes) was conducted to determinethe capability of turbulence models in checking wind speed contours on the road between 4 simplesymmetrical tall buildings with 0o, 30o, and 45o attack an gles validated with the results ofexperimentation. This research was conducted using RANS modeling (Reynolds Averaged Navier Stokes) andstandard turbulence model k-ε and validated using Low Speed Wind Tunnel and PIV (Particle ImageVelocimetry). According to the results of the test, U/Uo wind speed conditions obtained in wind modelingwith RANS and k-ε standards have errors that are still acceptable.
Studi Komparasi Standar Desain Pembebanan Angin Untuk Bangunan Tinggi Vincentius Adrian Laurens Nestyapradhana; Prasanti Widyasih Sarli
Jurnal Teknik Sipil Vol 32 No 2 (2025): Jurnal Teknik Sipil - Edisi Agustus
Publisher : Institut Teknologi Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5614/jts.2025.32.2.7

Abstract

Abstrak Indonesia dan beberapa negara tetangganya mengadopsi standar pembebanan angin internasional seperti ASCE, Eurocode, AIJ, AS/NZS, dan NBCC, yang dikembangkan pada kondisi geografis yang berbeda dibandingkan dengan daerah Asia Tenggara, sehingga diperlukan studi komparasi untuk mengetahui perbedaan fundamental dalam pembebanan angin dan hasil respons struktur yang didapatkan dari masing-masing standar pembebanan dengan kondisi angin di Indonesia. Hasil studi komparasi menunjukkan bahwa secara garis besar, masing-masing standar pembebanan menggunakan pendekatan yang sama dalam menentukan beban angin. Perbedaan utama terdapat pada periode ulang kecepatan angin yang digunakan dan nilai averaging time yang digunakan untuk menghitung faktor hembusan. Kemudian, terdapat juga perbedaan pada faktor-faktor lingkungan yang diperhitungkan untuk mendapatkan tekanan velositas, penggunaan persamaan dan nilai gust effect factor serta koefisien tekanan, dan perhitungan beban angin di masing-masing arah pada tiap standar. Studi komparasi ini juga menunjukkan bahwa untuk sebuah kasus struktur tinjauan berupa bangunan super tinggi yang berlokasi di Jakarta, standar pembebanan ASCE memberikan beban angin dan respons struktur terbesar. Kata-kata Kunci: Beban angin, komparasi pembebanan angin, respons struktur, standar pembebanan angin, struktur super tinggi Abstract Indonesia and its neighboring countries adopt international wind loading standards, such as ASCE, Eurocode, AIJ, AS/NZS and NBCC, which are developed in different geographical conditions compared to South-East Asia region. Thus, a comparative study is needed to see the fundamental differences in wind loading and structure response obtained from each loading standards with Indonesia’s wind condition. Comparative study shows that in general, each loading standards use the same approach in calculating wind load. The main differences of each loading standards come from the return period of the wind speed used in calculating wind load and averaging time used in calculating gust factor. Each standard also has differences in the factors used to calculate velocity pressure, the expression and method of gust effect factor and pressure coefficient, and methods for calculating all three directions of wind load in each standard. This study also shows that for the observed structure located in Jakarta used in this study, ASCE standard gives the highest value of design wind load and structure response. Keywords: Wind load, wind loading comparison, structural response, wind loading standards, supertall structure