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INDONESIA
Rekayasa Sipil
Published by Universitas Brawijaya
ISSN : -     EISSN : -     DOI : -
Core Subject : Engineering,
Civil Engineering, Building, Construction & Architecture
Arjuna Subject : -
Articles 536 Documents
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Tsunami Simulation in Paseban Beach Using Nesting Method on Delft3D Modeling Faradella, Maulida; Wiyono, Retno Utami Agung; Halik, Gusfan
Rekayasa Sipil Vol. 18 No. 1 (2024): Rekayasa Sipil Vol. 18 No. 1
Publisher : Department of Civil Engineering, Faculty of Engineering, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.rekayasasipil.2024.018.01.8

Abstract

Paseban Beach is an area that has the potential for a tsunami hazard. In analyzing the tsunami hazard, accurate data and methods are essential. Therefore, this study aims to conduct a tsunami hazard analysis using the nesting method to obtain precise modeling results. This study utilizes the Delftdashboard and Delft3D-Flow programs. The modeling of the 1994 Banyuwangi tsunami results show that the validation stage has an accuracy of 7.94%, which means it is very accurate. The tsunami modeling using the 8.7 Mw megathrust earthquake showed the tsunami wave height in Paseban Beach reached 10,25 meters with 46 minutes arrival time. The length of the tsunami inundation was measured to be 2.96 km, with a run-up height of 2.98 meters.
Numerical Study of Strengthened Spun Pile with Concrete Infill and Steel Jacket Hugen, Stevany Lydia Jedidjah; Lase, Yuskar; Orientilize, Mulia
Rekayasa Sipil Vol. 18 No. 1 (2024): Rekayasa Sipil Vol. 18 No. 1
Publisher : Department of Civil Engineering, Faculty of Engineering, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.rekayasasipil.2024.018.01.9

Abstract

The confinements in a spun pile in Indonesia are below the minimum requirement mentioned in ASCE 7-16. Since Indonesia still adopts the linear elastic concept for foundation design, where the pile should be designed strongly without damage, the deficiency does not matter. However, enormous piles are required to keep it elastically under severe earthquakes. Hence, a transition to performance-based design (PBD) should be prepared since the seismic acceleration tends to increase. PBD requires sufficient transverse reinforcement to ensure flexural failure. Steel jacket is proposed to overcome the lack of confinements, particularly on the pile cap connection where the largest curvature occurs. Experimental and numerical studies have been conducted on a full-scale spun pile-to-pile cap connection with a steel jacket under cyclic loading. A monotonic pushover analysis with Opensees Navigator open-source software was performed for further study.
Zero Emission Guide by The Last Indonesian Minister Regulation of 2022 Uses Blockchain – BIM for Green Efficiency Priyawan; Husin, Albert Eddy
Rekayasa Sipil Vol. 18 No. 1 (2024): Rekayasa Sipil Vol. 18 No. 1
Publisher : Department of Civil Engineering, Faculty of Engineering, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.rekayasasipil.2024.018.01.10

Abstract

As a result of climate change poses a threat and crisis that is currently sweeping the world; one of them is causing drought, rising sea levels, melting polar ice, and heat waves; therefore, the target towards Net Zero Emission (NZE) in 2060 must be an obligation in all countries. Green Building (GB) is a building that meets Building Technical Standards, and It has demonstrated demonstrable success in conserving resources such as water, energy, and other resources. The application of GB principles following the function and classification in every stage of its implementation is expected to reduce greenhouse gas emissions. This research aims to analyze the cost of improvement work based on GB assessment, which is an influencing factor in applying the regulation from the Minister of Public Works and Public Housing (PUPR) Indonesian government. The Technical Guidelines for GB, through the Minister of PUPR No.1 of 2022, is the latest regulation in Indonesia. Blockchain- Building Information Modelling (BIM) and the Implementation of GB using Structural Equation Modelling–Partial Least Square (SEM-PLS) for the analysis. Applying Blockchain-BIM to overcome the cost constraints is proven to increase the cost performance of GB in modern shopping center buildings by 3 - 3.8% in the Basic rating. It is higher when selecting a zero-emission approach for other ratings, dramatically affecting the required green costs.
Mapping of Risk Levels and Types of Ground Movement in South Sumatra Saputra, Erlangga; Fathoni, Bulkin; Gofar, Nurly
Rekayasa Sipil Vol. 18 No. 1 (2024): Rekayasa Sipil Vol. 18 No. 1
Publisher : Department of Civil Engineering, Faculty of Engineering, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.rekayasasipil.2024.018.01.11

Abstract

The western part of South Sumatra Province is situated near Bukit Barisan. Therefore, the topography is characterized by hills and mountains. This condition makes the area vulnerable to ground movement. Information on the risk level and type of ground movement is very important for the region's development. This paper presents the mapping of risk level and type of ground movement along the national road system in South Sumatra Province. The map was developed based on slope condition data collected and tabulated in the Slope Management System developed by the Ministry of Public Works based on several parameters. These parameters were processed and analyzed using ArcGIS software. The risk level is classified as low, medium, high, and very high. The type of ground movement is categorized as debris flow, rock fall, slope failure, rock mass failure, embankment failure, rotation failure, and translation failure. The study uses data from 2018 and 2021. Results show that most ground movement on road segments 36, 37, 38, 18, 19, and 21 is slope failure. The map suggests an increase in the number and level of risk of slope failures from 28 in 2018 to 45 in 2021. The map could be used as preliminary information but not as a replacement for slope surveys and investigations.
Effect of Sawdust Addition on Thermal Conductivity of Clay Bricks Bahar, Abely Aliya; Yulianto, Agus; Astuti, Budi
Rekayasa Sipil Vol. 18 No. 1 (2024): Rekayasa Sipil Vol. 18 No. 1
Publisher : Department of Civil Engineering, Faculty of Engineering, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.rekayasasipil.2024.018.01.12

Abstract

This research was conducted to find an alternative to the brick wall constituent material with the lowest thermal conductivity value by adding sawdust. The method of measuring the thermal conductivity value used is the steady-state hot plate method. From the test results obtained the more the addition of sawdust, the value of thermal conductivity obtained is also increasing. With the best conductivity value obtained by the author is in the addition of sawdust as much as 5 grams with a conductivity value of 0.006573945Q W/mK.
The Influence of Peat Water on the Physical Properties of Underwater Concrete Mizam, Ibnu Munawar; Ismeddiyanto; Kurniawandy, Alex
Rekayasa Sipil Vol. 18 No. 2 (2024): Rekayasa Sipil Vol. 18 No. 2
Publisher : Department of Civil Engineering, Faculty of Engineering, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.rekayasasipil.2024.018.02.4

Abstract

Casting concrete underwater is concrete used for structural work underwater. The main problem in underwater casting is the separation of concrete constituent materials. Casting underwater also does not involve compaction. This study will examine the effect of peat water on the physical properties of underwater cast concrete. The additive used in this study is in liquid form, with a mixture of anti-washout material 1.8% and self-compacting concrete 5% to the weight of cement. The obtained slump flow value is 470 mm. The results of volume weight testing on variations of clean water mixtures immersed in clean water for seven days are 2248,14 kg/m3 and 2258,96 kg/m3 for 28 days, variations of clean water mixtures immersed in peat water for seven days are 2224,49 kg/m3 and 2219,39 kg/m3 for 28 days, and variations of peat water mixtures immersed in peat water for seven days are 2202,50 kg/m3 and 2191,08 kg/m3 for 28 days. The decrease in volume weight occurs in variations immersed in peat water. The results of porosity testing on 7-day and 28-day concrete age variations of peat water mixtures immersed in peat water are 9,94% and 10,78%, variations of clean water mixtures immersed in peat water are 9,84% and 10,28%, and variations of clean water mixtures immersed in clean water are 9,73% and 8,70%. The SEM test results show the surface shape of concrete using a magnification of 1000x, more pores on variations of peat water mixtures immersed in peat water, and variations of clean water mixtures immersed in peat water have uneven surfaces and pores. In contrast, variations of clean water mixtures immersed in clean water have better surfaces. The additive used can work well with peat water and clean water.
The Modeling Of Flood Inundation Distribution And The Institutional Index, Based On Hexahelix Collaboration, In The Downstream Of Tuntang Watershed Ignatius Sriyana; Melfina Roselyn; Dyah Ari Wulandari
Rekayasa Sipil Vol. 18 No. 2 (2024): Rekayasa Sipil Vol. 18 No. 2
Publisher : Department of Civil Engineering, Faculty of Engineering, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.rekayasasipil.2024.018.02.5

Abstract

Flooding in the Tuntang Watershed of Central Java, Indonesia, poses a significant threat to communities and infrastructure. Past mitigation strategy have been ineffective due to fragmented collaboration, limited community involvement, and insufficient policy support. This study explores a new approach that combines the Village Watershed Model (VWM) and the hexahelix collaboration framework to promote coordinated action among government, communities, academia, businesses, NGOs, and media. This research create hydrological and hydraulic modeling, analyzing stakeholder roles, collaboration levels, and flood risks using questionnaires as a method. Results indicated moderate overall collaboration, with government and community leading the efforts. The hexahelix framework proved valuable for identifying strengths, weaknesses, and opportunities for improvement. Recommendations include strengthening coordination, enhancing community participation, fostering multi-stakeholder partnerships, developing comprehensive policies and funding mechanisms, and continuing research and innovation.
The Use of Source Validation Protocol Approach to Delay Investigation Analysis of Construction Project Realization Gea, Via Dolorosa; Bhaskara, Adwitya; Ambartiyas, Puspita
Rekayasa Sipil Vol. 18 No. 2 (2024): Rekayasa Sipil Vol. 18 No. 2
Publisher : Department of Civil Engineering, Faculty of Engineering, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.rekayasasipil.2024.018.02.13

Abstract

Delays in construction projects are common and persistent. Frequent disputes also make work time inefficient and result in significant cost increases. Therefore, it is necessary to study or investigate events that are useful as a solution to delay claims and have the potential to be used in litigation. This research has been conducted to maximize reliable data sources. The Source Validation Protocol guides the process for ensuring the validity of the source data based on the Forensic Schedule Analysis methodology. According to the Critical Path Method (CPM) schedule analysis, the construction time of the Rusunawa Building (Rent Simple Flat) of the Health Polytechnic of the Ministry of Health Yogyakarta is 73.2 weeks or 511 calendar days. The 2 data source validation protocols, including Validation of Baseline Schedule Selection, Validation and Rectification, and Validation of As-Built Schedule Sources, Reconstruction, and Validation, greatly influenced the project delays.
Unconfined Compressive Strength Testing on Expansive Clay Soils Stabilized with Cement and Lime Mindiastiwi, Tigo; Anggara, Febri
Rekayasa Sipil Vol. 18 No. 2 (2024): Rekayasa Sipil Vol. 18 No. 2
Publisher : Department of Civil Engineering, Faculty of Engineering, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.rekayasasipil.2024.018.02.9

Abstract

Use of Satellite Imagery for Banyuwangi Lampon Beach Tourist Road Track Planning Ghoni, Abdul; Sukmawati, Sri; Soetjipto, Jojok Widodo
Rekayasa Sipil Vol. 18 No. 2 (2024): Rekayasa Sipil Vol. 18 No. 2
Publisher : Department of Civil Engineering, Faculty of Engineering, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.rekayasasipil.2024.018.02.6

Abstract

Transportation is a crucial element in the development of an area, especially in the context of developing transportation routes in Lampon Beach, Banyuwangi Regency. With inadequate road access, the development of road routes on this beach is a priority to increase the region's economic productivity by utilizing the potential of natural resources. This research applied the spatial data-based Technology-Based Integration Method with the support of ArcGIS and Civil 3D software. Two road traces were generated, with the total length of trace 1 is 4.76 km and trace 2 is 4.98 km; the volume data of trade 1 with excavation amounted to 52,064.09 m3, and embankment amounted to 15,002.59 m3. Meanwhile, the volume of trade 2 with excavation amounted to 89,464.92 m3, and the barrier amounted to 12,537.02 m3. These results demonstrate the efficiency and accuracy of infrastructure planning on the geographical and spatial characteristics of the region. The assessment of excavation and embankment costs provides an overview of the resources required by applicable standards and regulations. This approach contributes significantly to selecting efficient road routes and a better understanding the resources needed for infrastructure development.

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