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An analysis of the damage level and reconstruction priority of elementary school buildings in the Central Lombok District

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AIP Conference Proceedings 2023年第1期2706卷

作者： Hariyadi Saifullah Akmaluddin Department of Civil Engineering Faculty of Engineering University of Mataram 83115 Indonesia Master Student of Civil Engineering Study Program Faculty of Engineering University of Mataram 83115 Indonesia

In Central Lombok District, the allocation of funds for the rehabilitation of elementary schools is very small compared to the number of schools that need reconstruction. The percentage of classroom rehabilitation work based on the target schools only reached 9.96%. Consequently, it needs to study to analyze the damage level of buildings and find out the most influenced criteria in formulating decisions for selecting school priorities that must be rehabilitated. Due to controlled aspects and standards are quite a lot and more sophisticated, accordingly the Analytical Hierarchy Process (AHP) method is the proper method for solving these complex problems. The sample in this study was 13 of the 25 schools that received special funds in 2018. The application of the AHP method was preceded by a survey involving experts who were competent in their fields. The results showed that the number of schools with moderate damage was six and severely damaged as many as seven schools. At the same time, based on the order of priority, building repairs are determined by the most influential criteria, namely the level of damage and primary education data.

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Review on cold-formed steel beam-column, apex and eaves, and truss joint

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AIP Conference Proceedings 2024年第1期3116卷

作者： R. M. Fadel Satria Albimanzura Anis Saggaff Mahmood Md Tahir Kiagus Muhammad Aminuddin Doctoral Student of Engineering Science Study Program Doctoral Faculty of Engineering Sriwijaya University Indralaya Indonesia Civil Engineering Faculty of Engineering Sriwijaya University Indralaya Indonesia Institute for Smart Infrastructure and Innovative Construction (ISIIC) Construction Research Centre (CRC) School of Civil Engineering University Teknologi Malaysia Johor Bahru Malaysia

Light steel framing using the Cold-Formed Steel (CFS) sections is one of the Industrialized Building Systems (IBS) highly recommended for our construction industry; it not only contributes to speeding up construction time and reducing material usage but also guarantees the quality of the building. A relentless study has been conducted to achieve the appropriate configuration to ensure CFS popularity by introducing different types of joints applicable in constructing lightweight steel framing. A review of the CFS joint is provided in this study. The CFS joint is focused on the beam-column joint, apex and eaves, and truss joint. The study is mapped to establish research trends on CFS joints. Some areas show limited study and need future research on the proposed joints’ structural behavior aspects.

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The environmental challenges of urban living: Why willingness to pay for apartments matters

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Environmental Challenges 2023年 13卷

作者： Tehupeiory, Aarce Mulyana, Rachmat Sianipar, Imelda Masni Juniaty Suryawan, I Wayan Koko Septiariva, Iva Yenis Prayogo, Wisnu Doctor of Law Program Universitas Kristen Indonesia Jakarta Cawang 13630 Indonesia Department of Building Engineering Education Universitas Negeri Medan Medan Indonesia PhD Student in Asia-Pacific Regional Studies College of Humanities and Social Sciences National Dong Hwa University Hualien 974 Taiwan Department of International Relations Faculty of Social Science and Political Science Universitas Kristen Indonesia Jakarta 13630 Indonesia Department of Environmental Engineering Faculty of Infrastructure Planning Universitas Pertamina Jakarta 12220 Indonesia Civil Engineering Study Program Faculty of Engineering Universitas Sebelas Maret Surakarta 57126 Indonesia

This study aims to understand the willingness of urban communities in Jabodetabek (Jakarta, Bogor, Depok, Tangerang, Bekasi) to move to apartment dwellings, and a study was conducted using a quantitative survey method. The study aimed to analyze the sociodemographic factors influencing the decision to switch to vertical housing. The survey collected data from a sample of individuals representing the entire population in Jabodetabek. The participants in the study were selected from various locations within Jabodetabek, including Jakarta, Bogor, Depok, Tangerang, and Bekasi. These areas were chosen to comprehensively represent the metropolitan region and its urban communities. By including participants from different locations within Jabodetabek, the study aimed to capture individuals' diverse perspectives and experiences in this region. The survey covered a range of sociodemographic factors such as gender, income, education level, marital status, occupancy, and residence ownership. The participants were divided into two groups: those willing to pay for an apartment and those who wereilling to pay for an apartment and those not. By comparing the characteristics of these two groups, the study aimed to identify significant differences and understand the factors influencing the willingness to move to apartment dwellings. The study results showed significant differences in income level, education level, marital status, and occupancy between the two groups. Income level was the most significant factor affecting an individual's willingness to pay for an apartment. Additionally, the perception of better apartment productivity, which includes reduced transportation time and costs associated with work or other business purposes, increased the demand for apartments. The study found that income level was the most significant factor affecting an individual's willingness to pay for an apartment. The perception of better apartment productivity also increased demand for apartments,

关键词： Apartments Better productivity Jabodetabek Metropolitan cities Sociodemographics Willingness to Pay

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Analysis of productivity and the need for heavy equipment on grade B aggregate foundation layers work (case study: Pekan Gedang road section, Batang Asai – Muaro Talang District, Sarolangun)

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IOP Conference Series: Materials Science and engineering 2020年第1期807卷

作者： Annisaa Dwiretnani Henriadi Lecturer at the Study Program of Civil Engineering University Batanghari Jambi Indonesia Student at the Study Program of Civil Engineering University Batanghari Jambi Indonesia

Grade B aggregate foundation layers are part of the road foundation that is located between subgrade and grade A foundation layers. The function of grade B aggregate foundation layers is to minimize the spread of loads to the subgrade. Road infrastructure is one of the factors that support an area development. Road improvements aimed to improve the social economy and open access to isolated areas of considerable potential for the development of natural resources. This research analyses productivity and the need for 5 types of heavy equipment on grade B aggregate foundation layers work (case study: Pekan Gedang road section, Batang Asai – Muaro Talang District, Sarolangun). Noted that heavy equipment specifications were used in project site same as the planned. The results showed that based on time schedule and project volume in this research can be completed properly and on time if using 5 units of dump trucks and 1 unit each for wheel loader, vibratory roller, motor grader and water tank truck, with productivity for wheel loader is 125.42 m3, dump truck is 2.69 m3, vibratory roller is 87.15 m3, motor grader is 57.24 m3 and water tank truck is 71.14 m3.

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Impact of infrastructure development jalur jalan lintas selatan (jjls) in Yogyakarta to change in land price

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IOP Conference Series: Earth and Environmental Science 2021年第1期683卷

作者： H Edy M Baiquni B Triatmodjo Doctoral Student in Environmental Sciences Doctoral Study Program Postgraduate School of Universitas Gadjah Mada Lecturer in Doctoral Program in Environmental Sciences Postgraduate School of Universitas Gadjah Mada and Lecturer in Regional Development Study Program at the Faculty of Geography Universitas Gadjah Mada Lecturer in Doctoral Program in Environmental Sciences Postgraduate School of Universitas Gadjah Mada and Lecturer in Civil Engineering Study Program Faculty of Engineering Universitas Gadjah Mada

The Southern Trans-Java Route (Jalur Jalan Lintas Selatan – JJLS) infrastructure development is a national program that goes through five provinces in the island of Java, namely the provinces of East Java, Central Java, Yogyakarta Special Region, West Java, and Banten. In Yogyakarta, the Southern Trans-Java Route (JJLS) cuts across three regencies, which are Gunungkidul Regency, Bantul Regency, and Kulonprogo Regency. This research selected locations in Jetis Village, Saptosari District, Gunungkidul Regency, Gadingsari Village, Sanden District, Bantul Regency, and Sindutan Village, Temon District, Kulonprogro Regency for its study. The aims of this research are to analyze price changes that occur. The research method employed in this study is the qualitative descriptive analysis method. The villages set as study locations were determined by purposive method and data collection was conducted through in-depth interviews with informants who understand the issues relevant to the research objectives. Based on the acquired study results, the highest change in land price took place in Sindutan Village. A significant increase in land price occurred.

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The comparison of empirical and finite element methods to evaluate soil foundation capacities for coastal dike

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IOP Conference Series: Materials Science and engineering 2020年第1期930卷

作者： Suyuti Zulkarnain K. Misbah Zhafirah M. Ardhana Lecturers at Study Program of Civil Engineering Faculty of Engineering Universitas Khairun North Maluku Indonesia Undergraduate Student at Study Program of Civil Engineering Faculty of Engineering Universitas Khairun North Maluku Indonesia

There are over 6,300km of coastlines in the North Maluku province of Indonesia due to tidal waves which originate from the pacific ocean. The waves deposit finely loosed materials and light soil formations on coastlines, therefore causing abrasion. A common example occurred in Toseho, Tidore, and Archipelago districts. Moreover, the local residence has been faced with this challenge for up to thirty years. For this reason, deliberations to construct a dike became significant, although, the soil properties are vulnerable. This reasearch, therefore, compares the empirical calculation to the finite element method (FEM) to ascertain soil foundation capacities. The results showed the safety factor, Fs, for dike height, Hd, of 3.5 m and width bottom, B1, of 12.5m appeared below 2.0 for soil friction s of 10~ 15°, while estimates above 2.0 depicts soil friction s of 20°. Furthermore, the soil stresses beneath the dike were determined empirically at qmax of 5.97 t/m2 and σs of 4.57 t/m2, while FEM evaluated the deformation elastic at 12.5 cm.

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Load-Displacement Response of Oil Palm Shell Concrete Compressive Test Using Digital Image Correlation

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IOP Conference Series: Earth and Environmental Science 2020年第1期498卷

作者： Fajri Fathur Rahman Widjojo Adi Prakoso Elly Tjahjono Bastian Okto B. Sentosa Mulia Orientilize Student of Civil Engineering Study Program Faculty of Engineering Universitas Indonesia Depok Indonesia Civil Engineering Department Faculty of Engineering Universitas Indonesia Depok Indonesia

study of compressive strength of oil palm shell (OPS) concrete has been conducted by varying the content of admixture of silica fume and fly ash to increase concrete strength. Digital Image Correlation (DIC) was used as a tool to capture the physical change of concrete cube during the test which can be converted to load-displacement response by using open source sotware, Ncorr. It is evident that DIC can be carried out with ordinary camera DSLR which reveal from test result. Poison's ratio as a ratio between lateral and vertical displacement is succesly obtained. The value are between 0.2096 to 0.2264. Concrete strength improved by 30% to 43% by adding the admixture, silica fume and fly ash.

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Nonlinear dynamic soil structure interaction in adjacent basement

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IOP Conference Series: Materials Science and engineering 2020年第1期725卷

作者： Yetty Saragi Masyhur Irsyam Roesyanto Hendriyawan Postgraduate Student of Departement Civil Engineering University of North Sumatera (USU) Study Program of Civil Engineering Institute of Technolgy Bandung (ITB) Departement Civil Engineering University of North Sumatera (USU)

This research was conducted to analyze the lateral dynamic pressure distribution on the basement walls and amplification of earthquake motion on the surface using the finite element method Midas GTS-NX. Dynamic soil-structure interaction analysis was carried out by using a sensitivity program to influence soil conditions, earthquake acceleration in bedrock, basement depth, bedrock depth and stiffness of the basement structure with a distance between basements of 15,0 m. From this study, the lateral pressure distribution of the dynamic soil reaches the maximum at the base of the basement with an increase in pressure that is almost linear in soft and nonlinear soil conditions in medium and hard soil conditions. The greatest increase in gradient occurs at a depth of four per five basement walls measured from the surface to the bottom of the basement. The analysis shows that the dynamic lateral pressure distribution has a maximum value at the top end of the basement and tends to shrink to the bottom of the basement.

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The effect of using crumb rubber on fatigue and rutting lives in flexible pavement

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IOP Conference Series: Materials Science and engineering 2020年第1期732卷

作者： T A Balqis S Suherman Post-Graduate Student of Infrastructure Engineering Study Program Applied Master Program Politeknik Negeri Bandung Bandung Indonesia Civil Engineering Department Politeknik Negeri Bandung Bandung Indonesia

This research is performed to analyze effect of using crumb rubber (CR) on the overlay design of Palembang City – Betung roads. Analysis of existing road conditions using the AASHTO 1993. This analysis based on deflection data using the Falling Weight Deflectometer (FWD). While, the overlay design analysis using CIRCLY 7.0 software to determine horizontal tensile strain (εh) for fatigue live and vertical compressive strain (εv) for rutting live parameters. The result showed that using CR can increase fatigue live into 66 % and rutting lives into 22 % for contribute pavement performance. To ensure the effect of CR in pavement's performance, further research must be taken to find out if there are other effects that support.

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Assessment of safety performance level on simple urban residential building: Case study at Bogor city Indonesia

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IOP Conference Series: Materials Science and engineering 2020年第1期712卷

作者： M Lutfi H Arien M Hendrawati P J Ramadhansyah N I Ramli Civil Engineering Study Program Faculty of Engineering & Science Ibn Khaldun University 16162 Bogor Indonesia Institute for Research and Community Services Ibn Khaldun University 16162 Bogor Indonesia Student of Civil Engineering Study Program Faculty of Engineering & Science Ibn Khaldun University 16162 Bogor Indonesia Faculty of Civil Engineering Technology Universiti Malaysia Pahang 26300 Gambang Pahang Malaysia

Simple urban residential building must meet the technical requirements set forth in the building and structure law number 28 of 2002. In the city of Bogor, especially in the densely populated village of Kayumanis, there are areas that have the potential of landslides. In that area, there are some houses that have been damaged by the movement of land and landslides that can threaten the safety of its inhabitants. Therefore they need to stay aware about potential collapse of several parts of house structures, and then understand how to evacuate to safer area, outside of the house after the incident was stopped. Based on these conditions, it is necessary to evaluate buildings in accordance with FEMA on the safety level of buildings. The structure and modeling analysis using SAP 2000-V10 and Indonesia Standard. Specification of simple urban residential building using the reinforced concrete material with the quality of concrete (fc') 17 MPa, 15x15 cm column dimension, 15x18 cm beam dimension and 4D12 BJTP main reinforcement, and shear reinforcement D8-20. The results of the analysis of urban residential building structures shown in 3D form, obtained values for column structure elements almost close to failure are marked with orange color, while for the element of the beam structure is declared safe marked with green color. From result of modeling analysis referring to FEMA 356 obtained value C0 = 1.0; C1 = 1.378; C2 = 1.0; C3 = 1.0; Sa = 1.011; and Te = 0.2206, which states the value of the displacement target is 0.02 m which is categorized to be at 'The Life Safety' (LS) performance level. This means that if there is a movement of land, the structure of the house is declared stable and has adequate service capacity and damage non-structural part is still controlled.

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