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Rekayasa Sipil
Published by Universitas Brawijaya
ISSN : -     EISSN : -     DOI : -
Core Subject : Engineering,
Civil Engineering, Building, Construction & Architecture
Arjuna Subject : -
Articles 551 Documents
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PREFABRICATRED VERTICAL DRAIN IMPROVED SOFT SOIL USING THREE-DIMENSIONAL FINITE ELEMENT METHOD Gilang Ramadan Kololikiye; Yulvi Zaika; Harimurti Harimurti
Rekayasa Sipil Vol. 15 No. 2 (2021)
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.2021.015.02.10

Abstract

The subgrade layer of freeway construction in East Java contains high compressibility of soft soil with 24.5 m depth and 10.2 m height of the embankment. It is necessary to stabilize using PVD by accelerating the process of consolidation to increase its bearing capacity. In this study, 3D FEM programming is used to analyze the consolidation in pursuing to compare with the analytical results. 3D FEM shows the settlement without PVD is 0.834 m with excess pore water -4 kN/m2, while using PVD the settlement 0.819 m with excess pore pressure -8 kN/m2. For the analytical results, both variations indicate the settlement 0.787 m. It’s because the FEM discretization analyzed in 3D gives more accurate results.
ENVIRONMENTAL IMPACT EVALUATION ON CONSTRUCTION MATERIALS WITH THE INTEGRATION OF BUILDING INFORMATION MODELING (BIM) AND LIFE CYCLE ASSESSMENT (LCA) Riska Ayu Febriyani; Indradi Wijatmiko; Wisnumurti Wisnumurti
Rekayasa Sipil Vol. 15 No. 2 (2021)
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.2021.015.02.1

Abstract

Technological developments, especially in the construction sector, have developed rapidly. The construction industry is one of the activities that consume energy, resources, and affects the environment. Therefore it is important to increase innovation and solutions to achieve sustainability standards. Several efforts were made to maintain environmental sustainability against global problems, namely the selection of building materials through an analysis of the impact of building materials on the environment called a Life Cycle Assessment (LCA). In this study, two types of curtain wall system materials, type (A), reinforced concrete, final coating, and type (B) brick, reinforced concrete, ceramic, and mortar will be compared. The method used in the completion of this research is a full building supply system in one way, namely the collaboration between Autodesk Revit and Tally which will then be analyzed again. The first step is to determine the type of material by calculating the total material requirements to be used or by modeling the building using Autodesk Revit. From the total volume of material that will be analyzed the impact of the building life cycle based on ISO 14040. The final objective of this research is to get the best alternative from the second material above. The results of the analysis supported the type (B) material which has a smaller effect than the type (A) material on the main environment that regulates global.
MODEL PEMILIHAN MODA DAN POTENSI PENGGUNAAN NON MOTORIZED TRANSPORT PADA MASA PANDEMI COVID-19 DI KOTA TEGAL Pipit Rusmandani; Riandy Sholeh Setiawan; Nurul Fitriani
Rekayasa Sipil Vol. 15 No. 2 (2021)
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.2021.015.02.6

Abstract

This study aims to (1) determine the factors affecting the mode preference in Tegal, (2) determine the factors affecting the potential use of non-motorized transportation in Tegal, and (3) investigate the relationship model among these factors. PLS Structural Equation Modelling (SEM) method was used. The results revealed (1) socio-economic characteristics (KSE) with vehicle ownership indicators influenced the mode choice level, (2) socio-economic characteristic variables with vehicle ownership indicators, travel intention variable (MP) covering working, shopping, and worship indicators, and self-preservation behaviour variable during the pandemic affected the potential use of non-motorized transport [0.801 KSE; (R2= 0,647)] (3) the relationship model among variables [Socio-economy (KSE), purpose of travel (MP), and self-preservation behaviour (PMD)] was =0,280 KSE+ 0.317 MP-0.175 PMD; (R2=0,2570)
EXPERIMENTAL STUDY OF FLEXURAL STRENGTH (OUT OF PLANE) ON WALL PANEL BY USING AUTOCLAVED AERATED CONCRETE AND BAMBOO REINFORCEMENT Miftakhul Jannah; Sri Murni Dewi; Hendro Suseno
Rekayasa Sipil Vol. 15 No. 2 (2021)
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.2021.015.02.2

Abstract

The use of wall panels in the construction sector is tremendously familiar, because the implementation process is faster and more efficient. However, concrete wall panels are considered quite heavy, so that in this research will be discussed to learn more about wall panels by utilizing AAC lightweight bricks and bamboo reinforcement to reduce the panel's own weight without reducing its structural strength. In this present study, the specimen was made with a scale model to be tested for flexural capacity when receiving out of plane loads. Based on the research results, there were differences in the characteristics between AAC panels and ordinary reinforced concrete panels so that the flexural strength test with out of plane loading, AAC panels have increased flexural capacity more than ordinary reinforced concrete panels.
KEBUTUHAN AREA PENIMBUNAN DI TEMPAT PENGOLAHAN AKHIR SAMPAH DOMESTIK DI KOTA PROBOLINGGO PROVINSI JAWA TIMUR Arief Rachmansyah; Christia Meidiana; Ika Meisy Putri Rahmawati
Rekayasa Sipil Vol. 15 No. 2 (2021)
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.2021.015.02.7

Abstract

The domestic Final Disposal Site (FDS) in Probolinggo City with 2 landfill areas is almost full, so it is necessary to develop a new landfill area as soon as possible. In the domestic FDS Bestari, there is still a large area for development, but some parts have been utilized by the management and the community. The aim of the study is to calculate the landfill area requirement over the next 10 years and development plan on limited land. The estimation of the amount of domestic solid waste in this study is based on a linear regression of the increasing of population, which is corrected by the amount of waste that can be transported to the FDS.  However, the activities in Probolinggo City are still dominated by settlements. With a reduction rate of 4 to 8%, the amount of waste that can be transported to the FDS in 2029 will reach 90 tons per day. With a heap height of up to 20 meters, the required land area for the new landfill area is ± 45000 m2. Taking into account the used area, 3 new small landfill areas and an extension of one existing landfill area proposed. This development area of landfill will be followed by new installation for leachate treatment.
Evaluation of Natural Lighting System of Lecture Building Ariska Desy Haryani; Yatnanta Padma Devia; Eva Arifi
Rekayasa Sipil Vol 15, No 3 (2021)
Publisher : Department of Civil Engineering, Faculty of Engineering, Universitas Brawijaya

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

Abstract

Visual comfort is one of the most important things that building need. A building with a proper passive design obtains fulfill the users visual comfort through natural lighting  on the other hand, a passive design that is less precise always requires energy to achieve the users visual comfort. Lecture building is one of the buildings that is effectively used 8 hours a day and 5 days on a week. The high operating hours cause visual comfort in the building becomes very important. The purpose of this study is to determine the performance of the building passive design in terms of lighting  to comprehend various visual problems in the building. The method used in this research is quantitative comparative by comparing the value of  building lighting. Through the results of field measurements, building modeling simulations with Ecotect software, and SNI 03-6197-2000 parameter  several problems were found in the building's natural lighting system such as inadequacy of lighting on the facade with a southwest orientation, enormous lighting on the facade with a northeast orientation, uneven lighting causing various visual discomforts.
THE EFFECT OF THE USE PREFABRICATED VERTICAL DRAIN (PVD) ON SOFT SOIL CONSTRUCTION OF BANDUNG CITY ROAD WITH FINITE ELEMENT ANALYSIS Mariyana Mariyana; Yulvi Zaika; Harimurti Harimurti
Rekayasa Sipil Vol 15, No 3 (2021)
Publisher : Department of Civil Engineering, Faculty of Engineering, Universitas Brawijaya

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

Abstract

Soft soil has more water and air content than solid soil particles, so it has a large settlement and soil consolidation lasts longer. Soil improvement will be able to minimize the settlement and consolidation process by adding preloading PVD combination. The effect of PVD installation and preloading is analyzed using Finite element analysis. An equivalence between plane strain and axisymmetric is made to obtain a 2D finite element analysis that is closer to field conditions. The equivalent equation between axisymmetric to plane strain has been proposed by the Indraratna Method. This study aims to determine the stress-strain behavior, pore water pressure, and stability in the use of PVD as well as the effects of smear zone. The result of the analysis is the greater the permeability value of the disturbed smear zone, the smaller the degree of total consolidation that occurs. The degree of total consolidation is proportional to the magnitude of the settlement that occurs over a certain period of time. Therefore, if the settlement is greater, the value of the degree of total consolidation will follow.
CRACKING STUDY OF ONYX WASTE PRECAST CONCRETE PANEL WHICH THE SURFACE IS FINISHED WITH 4MM THICKNESS GRINDING Danang Hadi Nugroho; Edhi Wahyuni Setyowati; Wisnumurti Wisnumurti
Rekayasa Sipil Vol 15, No 3 (2021)
Publisher : Department of Civil Engineering, Faculty of Engineering, Universitas Brawijaya

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Abstract

This research is a continuation of a series of research on Tulungagung onyx waste. The large volume of onyx waste in the area around the Tulungagung onyx processing plant is used as a substitute for gravel aggregate in the concrete mixture which is processed into exposed concrete which has high aesthetic value. In this study, a finishing treatment process (panel thickness thinning) was carried out which aims to produce coarse aggregates from the walls of the onyx concrete waste panels as exposed concrete which has high aesthetic value. The researcher wanted to know the cracking behavior of the onyx concrete waste panel walls before and after the finishing process. The test object used is the test object of previous researchers, namely the wall of the onyx waste concrete panel size 80 cm x 40 cm x 6 cm with practical steel reinforcement Ø6 - 100 mm attached, so that in this study the researcher only carried out the finishing treatment of panel thickness thinning, in-plane three-point loading test and took data on the cracks that occurred. The result of the finishing process by grinding of 2 mm shows that the percentage of aggregate is seen on average 1.8% of the total surface area, while for the finishing of 4 mm it shows that the percentage of aggregate is seen on average 35%. No initial cracks were found on the surface of the specimen after grinding 2 mm or 4 mm. The cracks experienced after loading were flexural cracks, where all the samples had only one crack in the direction almost perpendicular to the panel axis. The bending stress that occurs in the panels during the initial cracking of the non-grinding panels, 2 mm grinding panels, 4 mm grinding panels is 4.75 MPa, 4.62 MPa, 4.60 MPa respectively.
ROCK SLOPE STABILITY OF PONOROGO - PACITAN ROAD KM 232.5 USING ROCK MASS RATING (RMR) AND ROCPLANE SOFTWARE Hasyim Alhadar; Arief Rachmansyah; Eko Andi Suryo
Rekayasa Sipil Vol 15, No 3 (2021)
Publisher : Department of Civil Engineering, Faculty of Engineering, Universitas Brawijaya

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Abstract

Geological structures and discontinuities in the rock are weak areas and groundwater infiltration pathways. The existence of geological structures and discontinuities will reduce the level of rock shear strength and the main implication is to increase the chance of landslides. The purpose of this study was to determine the type of sliding on rock slopes, rock mass classification, and to determine the stability of the rock slopes. Kinematic analysis obtained landslide type, rock mass classification analysis including medium rock mass class with an RMR value of 53. Slope stability analysis based on the generalized criteria Hoek & Brown failure obtained a safety factor value of 1.55 with a slope angle of 60°. Slope stability analysis based on Mohr-Coulomb criteria obtained a safety factor value of 1.59 with a slope angle of 70°.
Comparative Study of Disaster Regulations in Analyzing Vulnerability Level of Elementary School Building Structures in Yogyakarta Lilis Tiyani; Hakas Prayuda; Bagus Soebandono
Rekayasa Sipil Vol 15, No 3 (2021)
Publisher : Department of Civil Engineering, Faculty of Engineering, Universitas Brawijaya

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Abstract

This research was conducted to compare several regulations that evaluate the level of vulnerability of school buildings in Yogyakarta. The regulations used in this study are a guide to assessing and repairing damage to public housing buildings due to the earthquake according to the Department of Public Works in 2000, technical guidelines for safe school rehabilitation according to the National Disaster Management Agency in 2011, a broken one or two-story simple building block safety check guide due to the earthquake according to the 2009 World Seismic Safety Initiative and using rapid visual screening of building for potential seismic hazards according to the Federal Emergency Management Agency No. 154 of 2002. The 25 schools selected in this study were located in areas prone to earthquakes, volcanoes erupted and prone to landslides. Through this research, the results of the appropriate regulations were obtained to evaluate the rapid level of vulnerability of buildings to disasters and evaluation of certain disaster cases was needed because the regulations did not accommodate all types of disasters.

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