Jurnal Teknik Sipil dan Arsitektur

KINERJA AKUSTIK DAN TERMAL DINDING BATA GEOPOLYMER CELLULAR LIGHTWEIGHT CONCRETE (GCLC)

Abito Bamban Yuuwono, Febrione Putri Rakhmanty, Kukuh Kurniawan Dwi Sungkono — Mon, 28 Jul 2025 07:32:44 +0700

The rapid growth of the construction industry in Indonesia has led to a surge in cement production, a process that is energy-intensive and releases significant amounts of CO2. To mitigate the environmental impact of cement, geopolymer materials have emerged as a sustainable alternative. Given their role as spatial dividers, walls play a crucial role in a building's thermal and acoustic performance. Effective thermal performance can reduce the energy consumption required for air conditioning, while good acoustic performance enhances occupant comfort. This study compared the thermal and acoustic performance of lightweight concrete bricks (using cement as the primary material) with geopolymer bricks (utilizing fly ash). Two simulated rooms with distinct wall materials were constructed, and their temperature and acoustic properties were simultaneously measured. The thermal testing revealed that geopolymer bricks exhibited superior acoustic performance compared to lightweight bricks. Acoustic testing indicated that both brick types performed well acoustically. However, the acoustic performance of lightweight bricks peaked in hot weather, while geopolymer bricks demonstrated better acoustic performance at lower temperatures.

KRITERIA DESAIN RUANG TERBUKA UNTUK OPTIMALISASI INTERAKSI SOSIAL DAN PERFORMA BISNIS DI PUSAT KULINER

Aliviana Demami, Nindya Alun Caesania — Mon, 28 Jul 2025 07:34:58 +0700

Open spaces play a crucial role in creating culinary centers that are not only visually appealing but also support social interaction and optimal business performance. This research aims to identify effective open space design criteria for enhancing social interaction and business performance in culinary centers. The research method employs a qualitative descriptive approach with a comparative case study method. Data collection was conducted through field observations, visual documentation, and literature and online media reviews. The main findings of this research reveal that an ideal open space design must consider elements such as flexible layouts, comfortable and interaction-supportive furniture, lighting that creates a warm atmosphere, and cleanliness. These design criteria have proven to have a significant impact on increasing social interaction among visitors and enhancing the attractiveness of culinary centers for business actors. The implications of this research provide valuable insights for developers and managers of culinary centers in creating open spaces that are not only functional but also capable of improving the visitor experience and supporting business growth.

MORFOLOGI PERMUKIMAN MULTIETNIK DI KAMPUNG PURWODINATAN SEMARANG: INTEGRASI BUDAYA DALAM RUANG ARSITEKTUR

Anityas Dian Susanti, Taufiq Rizza Nuzuluddin, Sharfina Bella Pahleva Wahyono — Mon, 28 Jul 2025 07:35:18 +0700

Purwodinatan Village in Semarang is one of the urban residential areas that exhibits a strong multiethnic character, with Koja, Chinese, and Javanese communities having coexisted for over a century. This study aims to examine the settlement morphology of the village and explore how the cultural values of each ethnic group are integrated into spatial forms and architectural expressions. A qualitative-descriptive approach is employed, using field observations, visual documentation, and spatial mapping to analyze street patterns, plot configurations, residential space organization, and building typologies.

The findings indicate that the morphological structure of Kampung Purwodinatan has developed organically, reflecting a gradual process of cultural adaptation. The narrow streets and branching alleys illustrate a community-based social system, while the houses and architectural elements display acculturation between Middle Eastern, Chinese, and traditional Javanese styles. Cultural integration is evident not only in the physical form of the buildings but also in the use of communal spaces such as mosques, temples, and local food stalls, which serve as social meeting points that reinforce intercommunity cohesion.

This study highlights the importance of understanding multicultural dynamics in the planning of historic urban areas and its relevance in preserving local identity through an inclusive architectural approach.

PEMANFAATAN LIMBAH PLASTIK LDPE PADA CAMPURAN ASPAL BETON MENGGUNAKAN ASPAL MODIFIKASI PG 70

Mon, 28 Jul 2025 07:36:28 +0700

Plastic waste management in Indonesia is an important issue in realizing sustainable waste management. Based on data from 2021, Indonesia produces around 25.95 million tons of plastic waste, equivalent to 15.96% of the total national waste production. Plastic waste occupies the second position after organic waste in the composition of waste in Indonesia. One of the efforts to utilize plastic waste is to integrate it as a binder in asphalt concrete mixtures. The asphalt concrete layer is a pavement layer that directly receives vehicle loads, is designed to withstand changes in temperature, shear forces, vertical pressure, and functions as a waterproof layer. In this study, Low-Density Polyethylene (LDPE) plastic waste was used after washing, shredding, and drying. LDPE was then mixed with asphalt through wet mixing method. This research aims to evaluate the effect of LDPE plastic waste addition on the quality of modified asphalt mixture, especially on the aspects of stability, flexibility, and crack resistance. Tests were conducted using the Marshall method to obtain parameters such as stability, flow, voids in the mixture (VIM), voids between aggregate grains (VMA), and voids filled with asphalt (VFA). The test results showed that the penetration value of PG 70 modified asphalt tended to decrease as the LDPE plastic waste content increased, from 55 cm at 0% to 44.13 cm at 6%, indicating an increase in asphalt hardness. The highest flash point was reached at 6% LDPE content of 375.67 Â°C, while the lowest flash point was 367 Â°C at 0% content, indicating increased thermal safety. In addition, the highest softening point was recorded at 6% LDPE content of 61.8 Â°C, while the lowest softening point was 52.9 Â°C at 0% content. This shows that the addition of LDPE increases the resistance of asphalt to high temperatures and still meets the technical standards set by the 2018 Bina Marga General Specifications. These findings indicate that the utilization of LDPE plastic waste in asphalt mixtures can be an innovative solution in reducing the volume of plastic waste while improving pavement quality.

Keyword: LDPE Plastic Waste, Modified Asphalt, Asphalt Concrete, Marshall Test.

PENAMBAHAN LIMBAH SPONS SANDAL EVA TERHADAP KARAKTERISTIK ASPAL MODIFIKASI PG 70 PADA CAMPURAN ASPAL BETON

Mon, 28 Jul 2025 07:36:43 +0700

In Indonesia, waste from home industries is still a major challenge in sustainable environmental management efforts. One type of waste
that is often overlooked is Ethylene Vinyl Acetate (EVA)-based sandal sponge waste. This waste is generally disposed of without further
utilization, thus potentially polluting the surrounding environment. This research aims to utilize EVA waste as an additive in PG 70
modified asphalt mixture in the asphalt concrete layer, which is a road pavement layer that directly bears the traffic load and must be
able to withstand vertical pressure, shear force, deformation, and temperature fluctuations. EVA waste was processed through
washing, shredding, and drying before being mixed into the asphalt using the wet mixing method. A series of laboratory tests were
conducted to assess the effect of EVA addition on the physical characteristics of asphalt, including penetration, flash point, ductility,
specific gravity, and softening point tests. The results showed that the addition of EVA waste tended to increase the flash point and
softening point, but decreased the penetration, ductility, and specific gravity values. All test parameters are still within the limits
required by the General Specifications of Bina Marga 2018 (Revision 2). These findings prove that EVA waste has potential as an
additive that not only improves asphalt performance, but also supports more environmentally friendly and sustainable waste
management solutions.
Keyword : PG 70 asphalt, EVA waste, asphalt concrete, physical characteristics, asphalt modification.

POTENSI LIMBAH KERAK TUNGKU PEMBAKARAN GENTENG SEBAGAI FILLER ALTERNATIF PADA CAMPURAN ASPAL BETON

Satria Pradana, Nurani Hartatik, Alif Setyo Ismoyo, I Gede Agus Punarta — Mon, 28 Jul 2025 07:36:56 +0700

The utilization of industrial waste as a construction material is a strategic step in supporting sustainable development. In this context,
the study was conducted to evaluate the characteristics of tile kiln crust waste as a substitute for filler in asphalt concrete mixture. The
waste was obtained from tile production in Kencong Village, Kediri Regency, East Java, then processed into fine powder before being
used in the mixture. This study was conducted at the National Road Implementation Center Laboratory, with a series of tests including
sieve analysis, determination of specific gravity, and X-Ray Fluorescense (XRF) test. Based on the results of the sieve analysis test, it
showed that 77.63% of tile kiln crust powder filler particles could pass through the No. 200 sieve, while the specific gravity value of
the material was 2.713. Meanwhile, the results of the XRF analysis indicated that the content of CaO (12.3%), SiO2 (36.7), and AI2O3
(12%) were the main elements, with characteristics resembling limestone filler. Based on the test results, it shows that the waste of the
roof tile kiln crust has met the criteria as a filler in the asphalt concrete mixture according to the Bina Marga 2018 specifications
(Revision 2). The use of this waste not only contributes to increasing the stability of the asphalt mixture, but also becomes an
environmentally friendly waste management solution. Therefore, tile kiln slag waste has significant potential to be applied as a filler
substitute in road paveent construction.

Keyword: Tile Waste, Filler, Marshall, Asphalt Concrete

POTENSI ABU KERTAS FOOD GRADE SEBAGAI ALTERNATIF FILLER CAMPURAN ASPAL PANAS PENGUJIAN FISIK DAN KIMIA

Mon, 28 Jul 2025 07:38:10 +0700

Population growth and industrial activities in Indonesia significantly increase the production of solid waste every year. One of the large amounts of waste that has not been optimally utilized is paper waste, including food grade paper waste. Handling food grade paper waste is an environmental challenge that requires innovative solutions. This research examines the potential of food grade paper ash as an alternative filler in hot mix asphalt through physical and chemical analysis. Food grade paper waste from industries in East Java was burned to ash and tested to meet the technical requirements of asphalt filler. Physical testing included particle size analysis with a No. 200 sieve and specific gravity measurement, while chemical testing used the X-Ray Fluorescence (XRF) method to determine the composition of the main compounds. The test results showed that 85.43% of the ash particles passed the No. 200 sieve, exceeding the minimum limit of 75% according to the 2018 Bina Marga General Specifications. The specific gravity of paper ash was 2.640 gr/cm³, in accordance with the SNI 1970-2008 standard which requires a minimum of 2.5 gr/cm³. The chemical composition of ash is dominated by calcium oxide (CaO) at 71.52%, silica (SiO?) 11.6%, and aluminum oxide (Al?O?) 7.3%, which play a role in increasing the adhesion and stability of asphalt mixtures. With these characteristics, food grade paper ash is suitable to be used as a filler to replace conventional materials in hot asphalt mixtures. The utilization of food grade paper ash not only meets the technical aspects, but also contributes to the reduction of industrial waste and provides an environmentally friendly solution in road construction.

Keyword: Food grade paper ash, Filler material, waste utilization, Hot mix asphalt

PENGGUNAAN ABU KERTAS KARTON SEBAGAI PENGGANTI FILLER PADA CAMPURAN ASPAL

Mon, 28 Jul 2025 07:38:22 +0700

The ever-increasing waste of paperboard is a serious challenge to the environment, prompting this research to explore the potential of paperboard ash as a filler replacement in asphalt mixtures. This research was conducted at the Laboratory of the National Road Implementation Center of East Java-Bali, with testing methods that included sieve analysis, specific gravity measurement, and X-Ray Fluorescence (XRF) analysis. The test results showed that 82.03% of the paper ash particles successfully passed the No. 200 sieve, indicating that this material is fine enough to function as a filler in asphalt mixtures. In addition, the average specific gravity obtained was 2.628, which meets the provisions in the 2018 Bina Marga General Specifications (Revision 2). XRF analysis revealed a dominant composition of calcium oxide (CaO) of 72.20%, followed by silica (SiO2) 10.9% and alumina (Al2O3) 6.8%, showing similarities with limestone filler. These findings indicate that paperboard ash can not only improve the stability of asphalt mixtures, but also contribute to waste management. By utilizing waste paperboard as filler, this research plays a role in sustainable development efforts and reduces negative impacts on the environment. In addition, the use of paperboard ash as an alternative filler in asphalt mixtures can also help reduce dependence on non-renewable natural resources, as well as reduce the volume of waste that ends up in landfills. Therefore, the use of paperboard ash as an alternative filler in asphalt mixtures is worth considering in modern construction practices.

Keyword: paperboaard ash, alternative filler, asphalt

ANALISIS KECELAKAAN DI JALAN RAYA NGANJUK-MADIUN DENGAN METODE ANGKA EKIVALEN KECELAKAAN DAN UPPER CONTROL LIMIT

Hanifa Nur A`ini, RA Dinasty Purnomoasri, Gatot Nursetyo — Mon, 28 Jul 2025 07:38:39 +0700

The Nganjuk-Madiun highway is a national road that connects the provincial capitals of East Java and Central Java. Therefore, the road is quite potential for traffic flow movements that have a fairly high accident rate. This analysis is used to determine and analyze the causal factors, characteristics, locations of accident-prone areas (blackspots), conditions of accident-prone areas (blackspots), and preventive measures that can be taken. The methods used in this analysis are the AEK (Accident Equivalent Number) method and the Upper Control Limit Method. Primary data is data on the geometric condition of the road, while secondary data is the number, time, location, day, class of victims, and type of vehicle obtained from the Nganjuk Police Traffic Unit in 2019 - 2023. The results of this study indicate that the characteristics of accidents based on the location of the most segments occurred in 2019 in segment 1 as many as 15, based on the time of the incident, namely at 06.01-07.00 WIB as many as 12 incidents, based on the class of victims, namely minor injuries (LR) as many as 93 victims, based on the type of vehicle, namely motorcycles as many as 63. Accident-prone areas on the Nganjuk-Madiun highway, Bagor District for 5 years (2019-2023) are in segment 3 with an AEK value of 314 and a UCL value of 302.68. Efforts that can be made to prevent accidents include installing traffic warning signs, adding road markings, repairing street lights, and adding road noise tape.

ANALISIS KEBUTUHAN LIFT GEDUNG MERAH YAYASAN MABADI’UL IHSAN BERDASARKAN SNI: 03-6573-2001

Mon, 28 Jul 2025 07:41:02 +0700

The Red Building of Foundation Mabadiâ€™ul Ihsan functioned as an educational facility for both school and university-level activities, consisting of five floors in the central area and seven floors on the sides. Currently, the building lacks a vertical transportation system such as an elevator, which is essential to support vertical mobility, especially considering the high volume of daily activity and the accessibility needs of its users. This study aims to calculate the required number and capacity of elevators based on SNI 03-6573-2001, the Indonesian national standard for planning vertical transportation systems in buildings. This standard provides technical guidelines for calculating, installing, and operating elevators to ensure safety, efficiency, and user comfort. The research methodology includes literature review, preliminary surveys, data collection, data analysis, result discussion, and the formulation of conclusions and recommendations. Through this structured approach, the study seeks to determine accurate elevator requirements tailored to the buildingâ€™s capacity and usage. The final outcome is expected to serve as a practical recommendation for the building management in considering the implementation of elevators. By doing so, the overall comfort and accessibility for students, faculty, and visitors can be significantly improved, thereby enhancing the effectiveness and inclusiveness of educational activities within the facility.

PERAN RUANG PUBLIK PERKOTAAN DALAM MENDORONG BUDAYA POLITIK INKLUSIF DI KOTA MAKASSAR

Sriany Ersina — Mon, 28 Jul 2025 07:42:21 +0700

Urban public spaces serve as vital social platforms where interactions between diverse groups occur, potentially strengthening an inclusive political culture. This study seeks to find out how the design, management, and utilization of public spaces in Makassar City promotes civic political involvement. The methodology used is qualitative, using a case study approach that includes comprehensive interviews, participatory observations, and documentation analysis. The data was studied using NVivo software to uncover prominent themes arising from socio-political engagement in public locations such as Losari Beach, Karebosi, and Fort Rotterdam. The findings suggest that carefully designed public spaces can act as catalysts for fostering a participatory political culture, despite structural barriers such as inadequate supportive regulations and limited access. The results of this study provide a basis for formulating recommendations aimed at improving democratic and socially fair public space planning.

Keyword: Public Space, Urban, Political Culture, Makassar City

KAJIAN PENGARUH VARIASI KEMIRINGAN CHUTE TERHADAP KECEPATAN DAN JENIS ALIRAN DI SALURAN TERBUKA

Mon, 28 Jul 2025 07:42:54 +0700

Studies related to flow in open channels are still very important to support understanding of flow behavior and also applications in civil engineering such as the construction of irrigation and drainage channels to increase efficiency and better design. Most of the designed flows in artificial open channels are non-uniform steady flows. The flow becomes non-uniform, one of which is because the flow passes through a channel whose geometry changes, including changes in width, height and slope angle of the channel. One of the structures in an artificial channel is a chute. Through this research, the effect of variations in chute slope on flow velocity and the type of flow that occurs downstream of the chute was studied. This research uses primary data with independent variables in the form of 4 variations in flow discharge or flow opening and 4 variations in slope. To analyze flow velocity, three measurement were used, using a current meter and float. Based on the analysis results, the greater the slope, the greater the flow velocity at the end of the chute and decreases further downstream. Flow velocity using a float produces a greater velocity because the float was on the surface of the flow, so it requires a correction number to become the average flow velocity. Because the influence of slope also had on velocity, the greater the slope, the greater the velocity, the more supercritical flow forms.

Keyword: Open Channel Flow, Chute, Velocity, Non-uniform Flow, Slope Channel

PREFERENSI SPASIAL DAN POSTURAL REMAJA DALAM RUANG GAMING NEIGHBORHOOD

Mon, 28 Jul 2025 07:45:12 +0700

Teenagers' frequent use of social media, especially playing games, can cause a lack of time to interact directly with family or friends. Addiction to games can make teenagers become more closed and reduce the frequency of face-to-face communication so that it can make teenagers alienated from real life in their environment. So the balance of interaction between the digital world in games and the real world is very important. A gaming space that does not accommodate adolescents' activities to play games with friends will lead to a decrease in adolescents' desire to play games with friends face-to-face. Therefore, this study aims to determine the gaming spaces chosen by teenagers, the characteristics of the gaming space desired by teenage neighborhoods and the preferred gaming posture of teenagers. This research uses a qualitative method combined with the calculation of the percentage of category analysis results. The results showed that the space preferences for playing games chosen by teenagers are home, friends' houses, schools, cafes, and internet cafes. The characteristics of the space desired by teenage neighborhoods consist of free space to play games and be with friends, free space for expression and activity, comfortable and quiet space, facilitated space, concentration space, privacy space, inexpensive space. While the posture of playing games that teenagers like when playing games is sitting upright, sitting relaxed, relaxing freely. This research is useful to be the basis for designing gaming spaces and public interaction spaces that can accommodate and encourage the activity of playing games together with teenage neighborhood friends face-to-face, in increasing social interaction.

SEISMIC PERFORMANCE OF A PRIVATE RESIDENCE BUILDING DESIGNED WITH NONLINEAR TIME HISTORY ANALYSIS

Caetano Jose Freitas — Mon, 28 Jul 2025 07:45:32 +0700

Reinforced concrete (RC) buildings with Special Moment Resisting Frames (SMRF) are widely used in seismic regions due to their superior ductility and energy dissipation capabilities. However, their actual performance under strong ground motions still requires detailed investigation, especially in regions with limited seismic design experience. This study assesses the seismic performance of a four-story SMRF RC building located in Delta-4, Dili, Timor Leste, using nonlinear time history analysis (NLTHA). The structural model was developed in SAP2000 v19 following the provisions of SNI 1726:2019 for seismic design and SNI 2847:2019 for concrete detailing, given their applicability in the absence of national standards. Seven ground motion records were selected and scaled to match the site-specific response spectrum. Key parameters such as story drift ratios, base shear, and plastic hinge development were analyzed. Results show that the building satisfies the Immediate Occupancy (IO) and Life Safety (LS) performance objectives under design-level seismic events. Plastic hinges formed primarily in beams rather than columns, validating a strong-column weak-beam mechanism. Drift ratios remained within acceptable limits, ensuring minimal structural and non-structural damage. The study confirms that properly detailed SMRF RC buildings can perform satisfactorily under earthquake loads, even in regions with emerging seismic design practice. Moreover, it highlights the effectiveness of NLTHA as a tool to support performance-based design in Timor-Leste and recommends further studies for taller structures and varied structural systems in similar contexts.

EVALUASI RUANG KELAS ANAK USIA DINI SESUAI ASPEK PSIKOLOGI ARSITEKTUR

Refranisa, M.Arya Sapcahadi, Salsabila Febri — Mon, 28 Jul 2025 07:45:51 +0700

TK Islam Al-Fath is a kindergarten level educational institution located in Pamulang District, South Tangerang City, Banten Province. The learning space facilities designed at the institution are flexible with an interior that uses bright colors designed to stimulate children's imagination and creativity. This is related to the application of architectural psychology which plays an important role in providing an environment that supports optimal child growth and development at an early age. This study aims to evaluate how much psychological aspects are applied to the classroom of TK Islam Al-Fath in order to determine factors such as the condition of furniture that is directly related to users, the condition of the spatial arrangement for users, the method used is observation of elements of architectural psychology. The results of this study indicate that in the design of the classroom, there needs to be adjustments in the selection of colors, flexibility of furniture, and lighting in order to create a more comfortable and conducive learning environment for children.

ANALISIS FAKTOR-FAKTOR YANG MEMPENGARUHI PENCEMARAN SUMBER DAYA AIR DI WILAYAH SUNGAI: SYSTEMATIC LITERATURE REVIEW

Ade Jaya Saputra, Sri Dewi Lestari, Jody Martin Ginting — Mon, 28 Jul 2025 07:46:21 +0700

Rivers are an important part of the ecosystems in several countries worldwide. They serve as a vital source of water for drinking, irrigation, and various other purposes. River pollution can lead to serious consequences for both the environment and human health. It can result in the death of aquatic life and render the water unsafe for human consumption. The research analysis was conducted using a literature review based on the factors influencing water resource pollution in river regions. The method used involved identifying the causal factors for scientific examination. The data was then processed using the Publish or Perish and VOS Viewer software. The results of the analysis regarding the number of factors affecting water resource pollution in river regions include the disposal of organic and non-organic waste, liquid waste, and Mandi, Cuci, Kakus (MCK) activities in the river areas. Overall, this systematic literature review provides a comprehensive overview of the factors and types of waste influencing water resource pollution in river regions. The study summarizes existing knowledge and research in this field, offering valuable insights and recommendations for practitioners and researchers involved in water resource pollution studies, especially in river regions. The Systematic Literature Review method presents an important overview of the factors influencing water resources in river regions. By comprehensively reviewing the literature, this journal identifies key factors causing water resource pollution in river environments and the challenges that need to be addressed for their effective implementation.

EVALUASI TINGKAT KEPUASAN PENGGUNA TERHADAP PROGRAM PAVINGISASI JALAN LINGKUNGAN DI KOTA MADIUN

Ummi Iyyaya Masyhudi, Mochamad Solikin, Dhani Mutiari, Qomarun — Mon, 28 Jul 2025 07:48:27 +0700

Roads are important infrastructure in supporting mobility and economic growth. Madiun City, as a developing city in East Java Province, continues to improve road infrastructure through a paving program aimed at improving accessibility and user comfort. This program has been successfully implemented in 2023 and again in 2024, covering the entire Madiun City. However, this study focused on Manguharjo sub-district with a time span from February to October 2024. This study aims to evaluate community satisfaction with neighborhood road paving using the Importance Satisfaction Analysis (ISA) and Customer Satisfaction Index (CSI) methods. In addition, this research identifies attributes that need to be improved in order to improve the quality of paving. The results show that paving quality and road safety are the main factors that need to be improved, as illustrated in Quadrant A of the ISA analysis. Meanwhile, accessibility and road width have a good level of satisfaction and need to be maintained. Based on the CSI analysis, a satisfaction index of 85% was obtained, indicating that the community as a whole was very satisfied with the results of the paving of neighborhood roads in Madiun City.

Keyword: Pavingization, User Satisfaction, Importance Satisfaction Analysis (ISA), Customer Satisfaction Index (CSI), Madiun City

PRIORITAS REHABILITASI LUMBUNG AIR DI KABUPATEN PATI DENGAN MULTIPLE ATTRIBUTE DECISION MAKING

Marcio Tahalele, Lintang Jata Angghita — Mon, 28 Jul 2025 07:48:48 +0700

Water security has become a global issue, especially in sustainable water resources management. It is closely related to the need for clean water, which is critical, limited, and vulnerable. Some factors that lead to problems in water security are population growth, climate change, and water resources management, which involves many parties and has not been optimized in many places. The Central Java region, especially Pati Regency, is an area that is vulnerable to water security problems, particularly drought. Water granaries in Pati Regency are one of the solutions to overcome drought problems. However, water granaries in Pati Regency have not functioned optimally. Thus, it is necessary to determine the priority order in rehabilitating water granaries using the Multi-Attribute Decision Making (MADM) method. The research was conducted by examining fourteen alternatives influenced by six criteria. The results show that physical infrastructure an important role in determining the priority order of rehabilitation of water granaries in Pati Regency. The results revealed that the Raci water granary was the priority in rehabilitation and had the highest preference value. The SAW method was optimal in determining the priority order of rehabilitation of water granaries in Pati Regency with an RMSE value of 3.648. It is necessary to review the weight of the performance assessment of water granaries to make decisions and follow up on water granary rehabilitation that can be carried out appropriately and beneficially for the community.

EVALUASI HUJAN BERBASIS SATELIT GPM-IMERG DI WILAYAH SUNGAI HALMAHERA UTARA UNTUK PENGELOLAAN SUMBER DAYA AIR

Ni Made Candra Partarini — Mon, 28 Jul 2025 07:50:08 +0700

Hydrological data is a crucial component in the planning and management of water resources (SDA) in Indonesia. The availability of data to date remains a critical issue that requires immediate attention. Satellite-based rainfall data has emerged as a promising alternative with better spatial and temporal scale coverage. This satellite data has been applied globally, especially for hydrological disaster prediction in various locations. Satellite rainfall technology continues to evolve with improvements in both quality and quantity over time. This research aims to assess the feasibility of using satellite rainfall data released by NASA, known as the Global Precipitation Measurement - Integrated Multi-satellite Retrievals for GPM (GPM-IMERG), for water resources management. The study location is the North Halmahera River Basin (WS). The feasibility assessment is conducted by comparing satellite rainfall data against field observation data represented by rain gauge stations scattered throughout the study area. The satellite performance assessment uses metric evaluation methods, including Probability of Detection (POD), False Alarm Ratio (FAR), Critical Success Index (CSI), and accuracy (fraction correct). The analysis results indicate that GPM-IMERG data demonstrates good performance in predicting rainfall in the South Halmahera River Basin based on the obtained evaluation metric values. Based on the metric evaluation, GPM-IMERG satellite rainfall data at 11 locations shows good performance in predicting rainfall in the North Halmahera River Basin. This is evident from the Probability of Detection (POD) values ranging from 0.90 to 0.99, the False Alarm Ratio (FAR) between 0.41 and 0.80, as well as the Critical Success Index (CSI) meeting values of 0.20 to 0.58, and cccuracy ranging from 0.33 to 0.66.

PENGARUH KONDISI INFRASTRUKTUR LINGKUNGAN JALAN TERHADAP KESELAMATAN LALU LINTAS ANGKUTAN JALAN: SYSTEMATIC REVIEW

Mon, 28 Jul 2025 07:50:32 +0700

Kondisi infrastruktur jalan merupakan elemen krusial dalam menjamin sistem transportasi yang aman, efisien, dan berkelanjutan, terutama di negara berkembang yang masih menghadapi tantangan dalam penyediaan fasilitas jalan yang sesuai dengan standar keselamatan. Studi ini bertujuan untuk mengkaji secara sistematis kontribusi berbagai komponen infrastruktur jalan terhadap keselamatan lalu lintas, mencakup geometri jalan, kondisi permukaan perkerasan, kelengkapan marka dan rambu, serta pencahayaan jalan. Metode yang digunakan adalah Systematic Literature Review (SLR) dengan mengacu pada pendekatan PRISMA, melalui analisis terhadap sepuluh artikel ilmiah terbitan tahun 2015 hingga 2025. Hasil kajian menunjukkan bahwa geometri jalan dan pencahayaan merupakan faktor dominan yang memengaruhi tingkat risiko kecelakaan, diikuti oleh kualitas perkerasan, kejelasan marka, dan keterbacaan rambu lalu lintas. Ketidaksesuaian atau kerusakan pada elemen-elemen tersebut dapat menyebabkan kebingungan, keterlambatan respons, dan pengambilan keputusan yang salah oleh pengemudi, terutama pada lokasi rawan kecelakaan. Selain itu, persepsi dan pemahaman pengguna jalan terhadap fungsi dan keberadaan infrastruktur juga menjadi faktor penting dalam efektivitas keselamatan. Oleh karena itu, peningkatan keselamatan lalu lintas harus dilakukan secara terpadu melalui perencanaan yang berbasis standar teknis dan keselamatan, pemeliharaan infrastruktur yang berkelanjutan, edukasi kepada pengguna jalan, serta penerapan prinsip forgiving road dan self-explaining road sebagai pendekatan strategis berbasis bukti dalam menurunkan angka kecelakaan secara berkelanjutan.

STUDI EKSPERIMEN KEKUATAN TEKAN MORTAR DENGAN CAMPURAN KAPUR, BUBUKAN BATA MERAH DAN PASIR

Harry Janto Jepira, Jimmy Chandra, Firnimus Konstatinus Bhara — Mon, 28 Jul 2025 07:50:54 +0700

This study aims to evaluate the use of lime as an alternative binder to replace cement in mortar mixtures, with the addition of crushed brick powder to enhance mechanical strength. This approach offers an environmentally friendly solution to the high carbon emissions associated with cement production. The mortar mixture was prepared using a ratio of 1:1:3 (lime : crushed brick powder : sand) with a water-to-binder ratio of 0.5. Tests were conducted to assess the compressive strength and density of the mortar at 7, 14, and 28 days of curing. The results showed that the average compressive strength increased with curing time, reaching 1.49 MPa at 7 days, 1.86 MPa at 14 days, and 2.40 MPa at 28 days. The mortar density ranged from 2,080 to 2,680 kg/m³, with average values of 2,513 kg/m³ (7 days), 2,342 kg/m³ (14 days), and 2,230 kg/m³ (28 days). These findings indicate that the combination of lime and crushed brick powder improves mortar performance and has the potential to be a more sustainable alternative construction material.

Keywords: Mortar, Lime, Crushed brick powder, Compressive strength, Density

ANALISIS DEBIT BANJIR RENCANA BENDUNG TRITIS KABUPATEN SRAGEN

Lidya Ayu Setya Kumala Sari, Paska Wijayanti, Kusdiman Joko Priyanto — Mon, 28 Jul 2025 07:59:31 +0700

Water availability is an aspect that should be given high priority by the government to meet community needs, both in urban and rural areas. Generally, the current water sources come from rivers, canals, or shallow groundwater wells. The water availability in irrigated land obtained from weirs is crucial for the agricultural sector. Dams have a role to hold water and distribute it through irrigation channels to agricultural land, in order to ensure consistent water availability, especially in the dry season. Tritis Dam functions to raise the elevation of the river water level so that it can be used to irrigate into irrigation channels. Tritis weir is a permanent dam with a stone masonry structure located in Sambirejo Village, Sambirejo District, Sragen Regency, which is located in the Tritis Watershed with an area of ??31.15 km2. The purpose of this study is to determine planned flood discharge value. The method used in this study is the Synthetic Unit Hydrograph (HSS) ITB-I, but previously it must process GPM (Global Precipitation Measurement) satellite rainfall data and calculate the planned rainfall using the Log Pearson III frequency distribution method. The planned flood discharge in the Tritis Watershed, Sragen Regency using the HSS ITB I method was obtained at 258.41 m3/second for a 50-year return period and 318.09 m3/second for a 100-year return period.

ANALISIS HUBUNGAN JUMLAH KECELAKAAN TERHADAP TINGKAT FATALITAS LALU LINTAS DI RUAS JALAN SUDIRMAN KOTA MAUMERE

Alfrendo Kabupung, Jimmy Chandra, Yohanes Gualbertus G. Lesu Duran — Mon, 28 Jul 2025 08:00:15 +0700

Traffic accidents remain a major issue affecting public safety worldwide. This study aims to analyze the relationship between the number of traffic accidents and the level of fatality on Sudirman Road in Maumere City. The research uses secondary data from the Sikka District Police covering the period 2019–2023, along with primary data from traffic volume surveys conducted in the study area. The analytical methods used include simple linear regression and correlation to determine the strength and direction of the relationship between the variables. The results show a fairly strong positive linear relationship between the number of accidents and the level of fatality, with a coefficient of determination (R²) of 0.6722. This means that approximately 67.22% of the variation in fatality levels can be explained by changes in the number of accidents. These findings indicate that an increase in the number of accidents is likely to be followed by a higher fatality rate. This research is expected to serve as a reference for improving traffic safety measures in urban areas.

Keyword: traffic accidents, fatality rate, linear regression, Jalan Sudirman, Maumere

ANALISIS KERAPUHAN STRUKTUR GEDUNG GSL UNMER MADIUN DENGAN PUSHOVER ANALYSIS

Rosyid Kholilur Rohman, Arif Afrianto, Rendi Gusta Wibowo — Mon, 28 Jul 2025 08:02:43 +0700

This study examines the fragility curve of the GSL building of Merdeka University of Madiun which was built around 1995 with reference to the SNI 1726:1989 standard. This building is an educational building with a structure using reinforced concrete. Modeling and structural analysis using ETABS software. Loading refers to SNI 1727 2020 and SNI 1726 2019. The analysis was carried out using the pushover analysis method referring to ATC-40. The fragility curve developed describes the probability of damage at various levels of Spectral Displacement (S_d). From this study, the base shear due to earthquake force was 4214 kN. The maximum value of base shear was 7890 kN and the maximum displacement of 0.359 m. Based on the conversion results obtained Sd at performance point 0.082 m, the probability for slight damage limits is 95%, moderate 78%, extensive 70%, and complete 45%. This research provides a basis for structural retrofit planning to increase the structural capacity of buildings due to earthquake load

ANALISIS BIAYA SIKLUS HIDUP BANGUNAN: STUDI KASUS BIAYA AWAL, OPERASIONAL, DAN PEMELIHARAAN PADA KANTOR DESA NDORUREA 1

Mon, 28 Jul 2025 00:00:00 +0700

This study sets out to analyze the total Life Cycle Cost (LCC) involved in constructing the Ndorurea 1 Village Office located in Nangapanda District, Ende Regency. Using the LCC approach, the research evaluates all expenses incurred throughout the building’s service life, which includes the initial construction costs, recurring annual operational costs, and scheduled maintenance costs over a span of 30 years. Data for this analysis were collected from the official Budget Plan (RAB), on-site observations, and interviews, and were processed using the Present Worth method. An inflation rate of 2.73% and a discount rate of 5.5% were applied to calculate the Future Value and convert it into Present Value. The findings reveal that the total LCC amounts to Rp 1,579,890,525.62, comprising an initial cost of Rp 784,461,207.31 (49.65%), operational costs of Rp 322,649,142.80 (20.42%), and maintenance costs of Rp 472,780,275.51 (28.92%). These results clearly show that more than half of the overall expenses are incurred after construction is completed. Hence, integrating the LCC approach from the initial planning stage is essential for ensuring cost efficiency, sustainability, and financial accountability in the development of village infrastructure.

ANALISIS DEBIT SUNGAI SAMBONG KABUPATEN BATANG DENGAN HEC-RAS

Ikhwanudin ikhwan, Farida Yudaningrum, Rifka Ahmida Adzkiannisa — Mon, 28 Jul 2025 08:03:26 +0700

The Sambong River is located in Batang District, with relatively flat topography and proximity to the sea, making it prone to frequent flooding. As observed in the past three years, the largest flood occurred on January 2, 2023, at 11 points in Batang District, which indirectly caused significant losses to the surrounding community. Therefore, a study is needed to determine the rise in water levels and the flood discharge volume of the Sambong River and to analyze its ability to accommodate such discharge.In this study, the flood discharge analysis for the planned Sambong River was calculated using the Nakayasu HSS method, and the river flow conditions were simulated using the HEC-RAS program with the unsteady flow method. Several data and parameters were based on the existing conditions of the river, resulting in the following discharge values: Q5 319.787 mÂ³/s, Q10 381.146 mÂ³/s, Q25 460.936 mÂ³/s, Q50 521.907 mÂ³/s, and Q100 584.437 mÂ³/s. Based on the HEC-RAS simulation results from 66 STA observation points, it was found that for the Q5 and Q10 return periods, 88% of the STA locations flooded; for the Q25 return period, 91% of STA locations flooded; for the Q50 return period, 92% flooded; and for the Q100 return period, 95% of STA locations flooded, with varying flood heights. Therefore, it can be concluded that the Sambong River is no longer able to accommodate the planned flood discharge

KARAKTERISASI KUAT TEKAN BETON AGREGAT LOKAL DENGAN VARIASI SUPERPLASTICIZER PADA UMUR AWAL

Mon, 28 Jul 2025 09:26:41 +0700

This study aims to characterize the effect of superplasticizer addition on local aggregate concrete workability and early-age compressive strength. The methodology involved the use of Portland Composite Cement, local fine and coarse aggregates, and Fosroc Auracast SP310 superplasticizer at dosages of 1%, 1.6%, and 2%. Four concrete mix designs were prepared: normal concrete (BN) and concrete with superplasticizer additions (BN-1%, BN-1.6%, BN-2%). Slump and compressive strength tests were conducted according to Indonesian standards to assess workability and strength at 7 and 14 days. Results indicate that superplasticizer addition significantly improves concrete workability with slump values ranging from 560 to 630 mm compared to 115 mm for the control. Compressive strength also increased markedly, with BN-2% showing the highest strength at 38.56 MPa at 7 days and 51.94 MPa at 14 days. The study concludes that superplasticizer effectively enhances both workability and compressive strength without increasing water demand, resulting in denser and stronger concrete at early curing ages.

PENGARUH PENAMBAHAN SERAT BAJA BERASAL DARI LIMBAH BAN MOTOR YANG TERBAKAR DAN TIDAK TERBAKAR TERHADAP KUAT TEKAN DAN KUAT LENTUR BETON

Muhammad Taufik, Yudhia Pratidina Pestalozi, Meilani Belladona — Mon, 28 Jul 2025 09:27:05 +0700

Beton memiliki kelebihan dan kekurangan, kekurangan beton tidak dapat menahan tarik.Kekurangan ini dapat diatasi dengan menambahkan serat kedalam beton. Penambahan serat bertujuan untuk meningkatkan kuat Tarik pada beton. Pada penelitian ini, sifat mekanik yang diteliti ialah kuat tekan dan kuat lentur beton, sedangkan serat yang digunakan yaitu serat baja ban motor baik yang terbakar dan tidak terbakar. Benda uji kuat tekan berupa slinder dengan dimensi 7,6 x 15 cm, benda uji kuat lentur berupa balok dengan dimensi 15 x 15 x 60 cm. Variasi serat baja terdiri dari (2,5,5 dan 7,5) dengan volume serat baja yaitu 1% yang digunakan. Serat baja baik dibakar dan tidak bakar tersebut dicampurkan ke dalam beton. Kuat tekan beton rencana yaitu (fc) 25 MPa, pengujian dilakukan setelah 28 hari. Berdasarkan hasil penelitian penambahan serat baja ban motor baik yang dibakar dan tidak dibakar menurunkan kuat tekan beton Penurunan ini disebabkan oleh beberapa faktor, seperti perubahan sifat mekanik serat akibat proses pembakaran Selain itu, residu karet atau material lain yang menempel pada permukaan serat dapat mengganggu ikatan antara serat keberadaan serat dalam campuran beton yang cenderung menciptakan rongga mikro. Rongga-rongga ini menyebabkan penurunan kepadatan beton, yang berdampak negatif pada kekuatan tekan. Penambahan serat baja yang dibakar dan tidak dibakar dapat meningkatkan kuat lentur beton.

TATA RUANG RUMAH TRADISIONAL DI KECAMATAN BANYUBIRU, KABUPATEN SEMARANG

Agung Wahyudi, Baju Arie Wibawa — Mon, 28 Jul 2025 09:27:32 +0700

Banyubiru is one of the sub-districts in Semarang Regency which is located on the slopes of Mount Telomoyo. Traditional houses in this area especially in Sepakung village and its surroundings, are javanese houses with distinctive characteristics that are different from Javanese houses in other areas, namely a single mass with two or three roof forms extending to back. Inside the house there are still four sakaguru pillars under the main roof. This study aims to reveal the shape of the houses in Sepakung village and its surroundings. We will look at the spatial pattern of the house, to study the extent to which the Javanese house layout pattern is still being applied or not. The method used is descriptive-analytical, which is looking at existing phenomena and then analyzing them by comparing them with the original Javanese house layout. From the observations made, the shape of the traditional house around the village of Sepakung still shows a relationship with the form of a traditional Javanese house (joglo), only the shape is simplified into one mass. The spatial pattern itself shows differences from the original Javanese house layout due to its simplification, such as the phenomenon of senthong Tengah desacralization, positional shift and addition of senthong/bedroom as needed. Despite these differences, there are still characteristics of Javanese spatial planning that are still maintained, namely the construction of the saka guru with its rong-rongan.

ADAPTASI SPASIAL RUMAH PASCA-BENCANA DENGAN STRUKTUR FLEKSIBEL DAN STRUKTUR PERMANEN

Akbar Preambudi, Annisa Oktareangga Dheany — Mon, 28 Jul 2025 09:27:53 +0700

The earthquake that struck Yogyakarta and its surrounding areas in 2006 caused significant physical damage across the region. Post-disaster reconstruction was carried out through various housing assistance programs. These programs produced diverse housing types that varied in architectural form, structural systems, and distribution mechanisms. Two notable examples of such housing are the dome houses in Ngelepen Village, Sleman, and the core houses in Tembi Village, Bantul. These two types of post-disaster dwellings reflect different structural approaches in terms of their capacity for spatial growth and transformation. Dome houses were designed with a fixed structural system, limiting future expansion, while core houses were built with a flexible structural concept, allowing for spatial modification and extension. Almost two decades after the earthquake, both housing types have undergone significant spatial adaptations in response to the evolving needs of their inhabitants. This study aims to evaluate how residents have spatially adapted to the design of these post-disaster homes and how such adaptations relate to their spatial cognition. The findings reveal both differences and similarities in the patterns of spatial adaptation between the two housing models, highlighting the influence of initial structural design on the subsequent spatial transformation. This research contributes to a deeper understanding of post-disaster housing resilience and resident-driven spatial evolution over time.