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INDONESIA
Teknisia
Published by Universitas Islam Indonesia
ISSN : 08538557     EISSN : 27460185     DOI : 10.20885/teknisia
Core Subject : Engineering,
Engineering
Jurnal Teknisia terbit pertama kali pada bulan April 1996. Pada awal berdirinya, Jurnal Teknisia merupakan jurnal ilmiah berkala yang diterbitkan tiga kali setahun oleh Fakultas Teknik Sipil dan Perencanaan, Universitas Islam Indonesia, Daerah Istimewa Yogyakarta yang berisi artikel-artikel bidang teknik sipil, teknik lingkungan, dan arsitektur.
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Articles 137 Documents
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Performance of infiltration wells in commercial building along the Kaliurang Road, Yogyakarta, between km 12 – 13 in 2017 Sri Amini Yuni Astuti
Teknisia Vol 29 No 1 (2024): Teknisia
Publisher : Jurusan Teknik Sipil, Fakultas Teknik Sipil dan Perencanaan, Universitas Islam Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20885/teknisia.vol29.iss1.art5

Abstract

Previous studies have shown that incorporating infiltration wells into drainage systems can significantly reduce surface runoff. However, the actual effectiveness of these wells in absorbing rainfall remains uncertain. This article evaluates the performance of infiltration wells installed at commercial buildings along Kaliurang Road (km 12–13) in 2017. Precipitation data was collected from the nearest weather stations: Kemput, Beran, and Bronggang. The design of the infiltration wells followed the Sunjoto technique, utilizing rainfall data from 2001 to 2020 to determine the rainfall intensity for a 5-year return period. To assess the wells' efficiency, daily rainfall data was converted to hourly data using Tadashi Tanimoto's method. The flow rate from rainfall on the roof was compared with the capacity of the infiltration wells. In 2017, the wells' capacity exceeded the flow rate on 363 out of 365 days, demonstrating an exceptionally high-performance rate of 99.45%. On September 28 and November 28, 2017, however, the wells were unable to handle the rainfall due to insufficient capacity.
Finite element modelling of soil nailing inclination effect on slope stability: Cibeureum slope case study Azmi Aufa Iftikhar; Hanindya Kusuma Artati
Teknisia Vol 29 No 1 (2024): Teknisia
Publisher : Jurusan Teknik Sipil, Fakultas Teknik Sipil dan Perencanaan, Universitas Islam Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20885/teknisia.vol29.iss1.art2

Abstract

On November 21, 2022, a 5.6 magnitude earthquake caused a landslide on one of the slopes in Cibeureum, Cianjur district. To repair the slope, reinforcement is necessary to achieve stability values that can withstand future earthquakes. One method for enhancing slope stability is soil nailing. Various soil nailing installation angles were analyzed to find the optimal design for the Cibeureum slope. Using the Plaxis 2D V20 program, the safety factor of the original slope without an earthquake was found to be 1.62. Increasing the installation angle of the soil nails from 10°, 15°, to 20° improved the safety factor, but the increase was not significant because the initial installation point was far from the slip line, requiring a nail length of 50 meters. The best configuration, yielding the highest safety value, was achieved with a modified slope angle of 19° and soil nails with a 50 m length installed at a 20° angle. This configuration produced a safety factor of 2.55 without an earthquake and 1.102 with an earthquake, as calculated using the Plaxis 2D V20 program.
Effect of coconut shell ash substitution on compressive strength, wear resistance and water absorption in paving blocks Khairul Nur Ihfansyah; Mochamad Teguh
Teknisia Vol 29 No 1 (2024): Teknisia
Publisher : Jurusan Teknik Sipil, Fakultas Teknik Sipil dan Perencanaan, Universitas Islam Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20885/teknisia.vol29.iss1.art4

Abstract

Waste refers to leftover material generated from production processes, industrial activities, or other human activities, often considered discarded due to its lack of economic value. Coconut shell waste is one such material that has not been optimally utilized, and it often accumulates without adequate disposal. However, coconut shell ash, which contains silica, can potentially enhance the compressive strength of paving blocks. This study investigates the effect of coconut shell ash substitution on the compressive strength, wear resistance, and water absorption of paving blocks. The tests were conducted in accordance with SNI-03-0691-1996 standards, including compressive strength, wear resistance, and water absorption tests. Coconut shell ash was substituted at percentages of 5.5%, 7.5%, 9.5%, 11.5%, and 13.5% by weight of cement. The paving blocks were tested at 28 days. The mixture used a 1:3 ratio of cement to sand, with the sand comprising equal parts Merapi and Progo River sand to balance their different grain characteristics—Merapi sand being angular and sharp, and Progo River sand being fine and round. The compressive strength, wear resistance, and water absorption of normal paving blocks were found to be 36.925 MPa, 0.085 mm/min, and 2.132%, respectively. The highest optimal performance was achieved at 9.5% coconut shell ash substitution, yielding a compressive strength of 40.450 MPa, wear resistance of 0.086 mm/min, and water absorption of 2.349%, meeting the quality category A standard for roads.
Liquefaction potential study under Ijo Balit weir in East Lombok Indonesia Burhan, Lalu Ibrohim; Artati, Hanindya Kusuma; Makrup, Lalu; Saputra, Elvis
Teknisia Vol 30 No 1 (2025): Teknisia
Publisher : Jurusan Teknik Sipil, Fakultas Teknik Sipil dan Perencanaan, Universitas Islam Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20885/teknisia.vol30.iss1.art3

Abstract

Liquefaction phenomenon can be occurred in the sandy soil. Caused by an earthquake shaking on the sandy soil so the shear stress of the soil will be lost and the soil seem like liquid. Liquefaction in a site can cause the building on soil surface in the site can be crack or collapse. Therefore, it is need to study to review the liquefaction potential that will be occurred under Ijo Balit weir East Lombok. In general, the liquefaction, trigger by the earthquake shaking. Based on this condition so can be developed the earthquake shaking in form of the earthquake acceleration for time history. The time history of the earthquake wave can be developed in ground surface based on the spectral-matching-procedure with the target spectrum is design spectrum. Based on ground surface time history then can be calculated liquefaction potential on the soil layer under the Ijo Balit weir East Lombok. The study result can be mention that the soil layer in the site is not experience liquefaction.
Utilization of used white paper for papercrete (mechanical and economic characteristics) Al-Shehari, Waleed Redhwan Mohammed; Winarno, Setya
Teknisia Vol 29 No 2 (2024): Teknisia
Publisher : Jurusan Teknik Sipil, Fakultas Teknik Sipil dan Perencanaan, Universitas Islam Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20885/teknisia.vol29.iss2.art4

Abstract

Paper-crete may possibly be a change surface made by combining wasted-paper with customary cement. This function as substitution for schedule concrete and gives central focuses like squander diminishment and the assistance of headway& common impact. This study consider is to degree the compressive and flexural (mechanical strength) of paper-crete, evaluate the making taken a toll of paper-crete, and recognize the idealize paper degree interior the concrete blend based. on both. mechanical and cash related variables. An exploratory think roughly was conducted to see at the mechanical and budgetary properties of paper-crete with grouped paper degrees. White wasted-paper has been joined into the concrete blend. The test fabricate took put at Kaliurang Laoratory. An layout was done to actuate time taken a toll information from particular merchants found close Kaliurang Road. The compressive and flexural qualities of paper-crete are by and broad reduced when white wasted-paper is utilized in paper-crete settling. The quality reduces with developing wasted-paper substance. The comes around appear up that there's not a idealize mix of paper-crete made with white paper for the quality and period taken a toll. The brought of paper-crete made utilizing white waste.paper increments with its composition.
Mitigating the impact of the Mount Semeru eruption in Lumajang regency using a Geographic Information System Approach Dani, Ilham; Rasimeng, Syamsurijal; Amalia, Firda
Teknisia Vol 29 No 2 (2024): Teknisia
Publisher : Jurusan Teknik Sipil, Fakultas Teknik Sipil dan Perencanaan, Universitas Islam Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20885/teknisia.vol29.iss2.art5

Abstract

Indonesia is a country with high volcanic activity, with more than 130 active volcanoes. Mount Semeru is the highest volcano on the island of Java, which is located between Malang Regency and Lumajang Regency. Mount Semeru's volcanic activity can cause disasters such as lava flows, poisonous gas, volcanic ash ejections and rock avalanches. Mitigation of volcanic eruption disasters in Lumajang Regency is carried out by mapping areas that are potentially affected. This research aims to examine the use of Geographic Information Systems (GIS) in mapping areas affected by the eruption of Mount Semeru. The method used is GIS-based spatial analysis to identify areas prone to volcanic eruptions, which are divided into three zones based on their level of vulnerability. The mapping results show that Pronojiwo and Pasrujambe District has the highest level of vulnerability, followed by Candipuro and Senduro Districts.
Experimental study on the utilization of raw rice husks as a partial replacement of sand in the production of paver blocks Hakim Muganga; Setya Winarno; Fitri Nugraheni
Teknisia Vol 29 No 2 (2024): Teknisia
Publisher : Jurusan Teknik Sipil, Fakultas Teknik Sipil dan Perencanaan, Universitas Islam Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20885/teknisia.vol29.iss2.art6

Abstract

This study explores the potential use of raw rice husks as a partial substitute for sand in the production of paver blocks, addressing the increasing demand for concrete and the overuse of natural resources like aggregates. Rice husks, an abundant waste material in Indonesia, were incorporated into paver blocks made from Portland cement, sand, and raw rice husks. The initial mix ratio was 1 part cement to 8 parts sand, with subsequent mixes gradually replacing sand with rice husks in proportions ranging from 0.5 to 2 parts. The paver blocks were mixed, molded, and compacted, and their properties were tested for compressive strength, water absorption, skid resistance, and abrasion resistance. Five different mix variations were tested, and the production costs were analyzed. The findings revealed that increasing the rice husk content reduced compressive strength but improved water absorption, skid resistance, and abrasion resistance. Additionally, higher rice husk content resulted in lower production costs. The optimal mix, consisting of 1 part cement, 7.5 parts sand, and 0.5 parts rice husks, met all Indonesian standards and demonstrated the best performance. Further research is recommended to assess freeze-thaw resistance and enhance the cost-effectiveness and quality of paver production.
Hazard analysis and extreme weather mitigation in Pontianak city based on Geographic Information System Lestari, Nadya Hawa Putri; Jasisca Meirany; Nana Novita Pratiwi; Arfena Deah Lestari; Mochammad Meddy Danial
Teknisia Vol 29 No 2 (2024): Teknisia
Publisher : Jurusan Teknik Sipil, Fakultas Teknik Sipil dan Perencanaan, Universitas Islam Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20885/teknisia.vol29.iss2.art1

Abstract

The geographical location of Pontianak City, situated on the Equator, creates a high potential for hydrometeorological disasters, particularly extreme weather events such as whirlwinds. Based on the history of recurring events, it is essential to conduct this research to recommend disaster mitigation strategies based on hazard analysis and the Extreme Weather Disaster Class Index in Pontianak City. The data used are slope, land use, annual rainfall, and surface air temperature. These parameters are processed using the ArcGIS software. The results of the hazard analysis indicate that Pontianak City has a moderate level of hazard, covering an area of 5,191.46 ha, or 44.41% of the total area of Pontianak City. Sub-districts with medium-level potential areas are Pontianak Kota sub-district, with an area of 883.56 ha, West Pontianak sub-district, with an area of 836.97 ha, and South Pontianak sub-district, with an area of 761.59 ha. The non-structural disaster mitigation measures that need to be implemented to reduce the impact of extreme weather disasters include disaster risk assessment, enforcement of mitigation-based spatial plans, and community engagement. While structural mitigation can be achieved by strengthening building structures, these structures must utilize materials and construction techniques that are resistant to whirlwinds and enhance the strength of foundations, walls, and roofs. Making evacuation routes based on disaster mitigation and installing early warning equipment, such as Weather Information Display (WID), also needs to be done in an effort to minimize the impact of extreme whirlwind weather.
Prediction of ground motion due to the influence of Nonlinear Soil Conditions using probabilistic approach Nurhidayatullah, Eka Faisal; Dwi Kurniati
Teknisia Vol 29 No 2 (2024): Teknisia
Publisher : Jurusan Teknik Sipil, Fakultas Teknik Sipil dan Perencanaan, Universitas Islam Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20885/teknisia.vol29.iss2.art2

Abstract

Ground acceleration data plays an important role in obtaining accurate dynamic analysis results. This data is difficult to find in Indonesia. There is a need for a comprehensive study related to ground motion prediction by considering the condition of the soil that is able to change the acceleration which can significantly affect the building damage. The latest earthquake events and soil tests data need to be collected. Probabilistic analysis was performed to obtain the target spectra. The deaggregation analysis are used as a reference for collecting earthquake recording data. The spectral matching process is carried out according to the target spectra. Earthquake records with small errors to the target spectra are selected. Only ground motion that has the smallest deviations of acceleration, velocity, displacement, directivity and arias intensity to the original earthquake recording is used in non-linear site response analysis. Surface ground motion is obtained from the analysis of wave propagation from the bedrock to surface by considering the influence of onlinear parameters of the soil. The spectral response analysis at bedrock shows the acceleration value at 0.2 seconds period is 1.326g and 1 second period is 0.447g. Each year, the hazard is dominated with earthquakes magnitude from 6.97 to 7.23 Mw which occur in the range of 89 to 111 km with 22.20% percentage. Darfield, New Zealand ground motion from spectral matching results is the best ground motion recording that is most suitable when used at research area. Surface ground motion tends to amplify about 1.2 times.
Barriers to implementing Common Data Environment (CDE) in the construction phase of BIM-based projects Abma, Vendie; Nastiti, Aulia Rahma; Ramadhani, Fina
Teknisia Vol 29 No 2 (2024): Teknisia
Publisher : Jurusan Teknik Sipil, Fakultas Teknik Sipil dan Perencanaan, Universitas Islam Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20885/teknisia.vol29.iss2.art3

Abstract

The implementation of Building Information Modeling (BIM) has generally been proven to provide changes in the way construction projects are managed and bring long-term benefits in terms of efficiency, cost, and quality. The Common Data Environment (CDE) platform is instrumental in fostering collaboration and coordination in the implementation of BIM. The objective of this study is to examine the barriers to the integration of the CDE in BIM-based construction management during the execution phase of construction projects. To achieve this goal, a survey questionnaire was created to collect feedback on engagement, the main barriers that have been identified through comprehensive literature insights. Primary data was collected from the questionnaire on this project case study with a total of 14 respondents who were directly involved in the project and had access to CDE. The final results show that the main barriers involved are the habits of the conventional system that exists in the company (the company's organizational culture). In order to effect a transformation toward sustainable buildings within the context of a digital construction culture, it is imperative that there be an increased emphasis on encouraging the adoption of this new paradigm. The results of this study will prove to be of the utmost importance for professionals in the construction industry, particularly those in Indonesia, who are in the process of adopting BIM.

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