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Identification of Green Construction Indicators and Project Performance in Green Construction Based Project Management Using the Delphi Method 8th

Identification of Green Construction Indicators and Project ...

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8th International Conference on civil engineering, ICOCE 2024

作者： Istri Mas Pertiwi, I.G.A. Zaika, Yulvi Negara, Kartika Puspa Solimun Agung Wibowo, M. Brawijaya University Malang Indonesia Doctoral Program of Civil Engineering Brawijaya University Malang Indonesia Department of Civil Engineering Brawijaya University Malang Indonesia Department of Statistic Brawijaya University Malang Indonesia Diponegoro University Semarang Indonesia Departemen of Civil Engineering Diponegoro University Semarang Indonesia

ISBN: (纸本)9789819759095

A green-oriented project management system will be different from projects in general. Differences occur in the planning process to the construction process. To support sustainable and environmentally friendly development, it is very necessary to implement green buildings. For this reason, the Indonesian government, through the Public Works and Public Housing (PUPR) Ministry, has standards regarding green buildings in the form of indicators of green construction variables as requirements for green building certification. Green construction practices also influence performance achievements, such as cost, schedule, quality, environmental, and occupational health and safety (OHS) performance, hereinafter referred to as project performance variables. The aim of the research is to identify green construction indicators that will be applied and project performance indicators that will be used to assess project performance in green construction based project management. There are 17 indicators from the results of previous research synthesis. Meanwhile, the project performance variables obtained were nine cost performance items, five schedule performance items, six quality performance items, and eight OHS performance items. Analysis using the Delphi method, the first round was carried out to identify indicators for each variable that were ranked in the high category. The second round was to obtain consensus from all respondents. The Delphi survey was conducted using Google Form on 20 respondents representing all stakeholders in the construction services industry and project owners with a five-point Likert scale. The analysis resulted in 17 indicators identified in the initial survey being highly rated for application to green projects. Meanwhile, for project performance, the results obtained were nine cost performance items, four schedule performance items, six quality performance items, and seven K3 performance items identified in the initial survey which received high rat

关键词： Green buildings

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Evaluation of HDPE plastic waste as a coarse aggregate substitute in Hot Rolled Sheet-Wearing Course asphalt mixtures 1

Evaluation of HDPE plastic waste as a coarse aggregate subst...

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1st engineering and Science International Conference 2024, ESIC 2024

作者： Desriantomy, D. Siantoni, J. Murniati, M. Department of Civil Engineering Faculty of Engineering Universitas Palangka Raya Kampus UPR Tunjung Nyaho Yos Sudarso Street Kotak Pos 2/PLKUP Palangka Raya Central Kalimantan73111 Indonesia Doctoral Program in Environmental Science Postgraduate Program Universitas Palangka Raya Kampus UPR Tunjung Nyaho Yos Sudarso Street Kotak Pos 2/PLKUP Palangka Raya Central Kalimantan73111 Indonesia

Plastic-based goods are commonly used in daily life, but their waste poses significant environmental challenges due to its durability. This study investigates the use of recycled plastic as an artificial coarse aggregate in asphalt mixtures, specifically assessing the effects of High-Density Polyethylene (HDPE) on Hot Rolled Sheet Wearing Course (HRS-WC) mixtures. The objectives are to evaluate the physical properties of the artificial coarse aggregates, identify the optimal asphalt content and Marshall characteristics, and determine the maximum feasible substitution level for these aggregates. A test specimen (briquette) was produced for the Marshall test to assess the mixture properties. Our findings indicate that the maximum allowable substitution of HDPE plastic in HRS-WC mixtures is 42%. With an optimal asphalt content of 7.30%, HDPE substitution levels of 30%, 35%, 40%, 45%, and 50% yielded the highest stability at 45% (1176.696 kg), the highest VMA at 30% (21.250%), and the highest VIM within specifications at 30% (4.998%). The highest VFB value was observed at 45% (88.767%), while the highest Marshall Quotient was at 30% (364.527 kg/mm). The study recommends a maximum HDPE plastic waste substitution level of 40%, highlighting the potential for using HDPE plastic waste in asphalt mixtures to promote more sustainable construction practices. © 2025 Institute of Physics Publishing. All rights reserved.

关键词： Aggregates

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Prediction Model for Track Quality Index Categories on the Northern and Southern Railway Lines of Java

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Periodica Polytechnica Transportation engineering 2025年第2期53卷 184-193页

作者： Yudariansyah, Hadi Ismiyati, Ismiyati Narendera, Alfa Doctoral Program of Civil Engineering Faculty of Engineering University of Diponegoro 5–7 Hayam Wuruk street Semarang50241 Indonesia Department of Civil Engineering Faculty of Engineering University of Diponegoro Prof. Sudarto Tembalang Street Semarang50275 Indonesia Department of Civil Engineering Faculty of Engineering Semarang State University E3–4 Kampus Sekaran Gunung Pati Street Semarang50229 Indonesia

Track quality index (TQI) is a quality metric that objectively measures the geometric condition of railway tracks for maintenance planning. The TQI categories serve as the basis for proposed track maintenance. The TQI measured by the EM120 track recording car on Java island currently covers only 78.84% of the 5,634.363 km of railway tracks, indicating that there are still track sections without TQI category values. This study aims to model the maintenance of railway infrastructure based on TQI categories derived from both track recording car results and manual measurements across various sections of railway lines on the northern and southern routes of Java island. The analysis used is based on the standard deviation of railway track geometry, including superelevation, levelling, lining, and track gauge. Factors such as turnouts, bridges, crossings, straight sections, and curves were then classified as predictive factors. Machine learning techniques were adopted, with 80% of the data set randomly used for training and the remaining for testing to generate TQI category predictions. A total of 233,175 TQI data points from 2019–2022 were used to build and validate the model. The results indicate that the multinomial regression model for TQI Categories 1, 2, 3, and 4 is highly accurate, the rest is influenced by other factors. These results imply that the model has an exceptional fit and excellent predictive capability for TQI on the northern and southern railway lines of Java island. © 2025 Budapest University of Technology and Economics. All rights reserved.

关键词： Prediction models

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Communal-based domestic rainwater harvesting system: A novel approach to alternative solutions for increasing water supply and recharging groundwater in Jagakarsa urban area, South Jakarta

Case Studies in Chemical and Environmental Engineering

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Case Studies in Chemical and Environmental engineering 2025年 11卷

作者： Suprapti, Suprapti Kusuma, Muhammad Syahril Badri Kardhana, Hadi Cahyono, Muhammad Juliana, Imroatul Chalimah Doctoral Program of Civil Engineering Faculty of Civil and Environmental Engineering Institut Teknologi Bandung Jl. Ganesha No. 10 Jawa Barat Bandung 40132 Indonesia Water Resources Engineering Group Faculty of Civil and Environmental Engineering Institut Teknologi Bandung Jl. Ganesha No. 10 Jawa Barat Bandung 40132 Indonesia Civil Engineering Department Faculty of Engineering and Sciences Ibnu Khaldun Bogor University Jl. Sholeh Iskandar Km. 2 Jawa Barat Kota Bogor 16162 Indonesia Research Center for Ecohydrology Ecohydraulics and Engineering Science Bandung Jl. Babakan Jeruk 1 No. 100 Jawa Barat Bandung 40132 Indonesia Civil Engineering Study Program Sriwijaya University Jl. Raya Lintas Timur Palembang - Prabumulih No. Km. 32 Indralaya Indah South Sumatra Indralaya Indonesia Study Program of Civil Engineering Faculty of Engineering Universitas Mercu Buana Jl. Meruya Selatan No. 01 Kembangan-Jakarta Barat Jakarta 11650 Indonesia

This study proposes a new approach, a communal-based domestic rainwater harvesting (CDRWH) system, which is a new model that combines domestic and communal rainwater harvesting systems. This model is an alternative solution to improve system performance and utilize rainwater overflow from the system. Rainwater runoff from several domestic tanks is channeled to a communal tank to be collected, processed, and redistributed to needy domestic tanks. Overflow from the communal tank is used for groundwater recharge. The CDRWH system model aims to increase water supply, reduce runoff, and conserve groundwater. The model simulation uses daily water balance analysis and yield before spillage algorithm. The simulation scenario uses variations in roof area, number of house occupants, storage tank volume, and rainfall categories: 20 years, wet year, normal year, and dry year. Jagakarsa, an urban area in South Jakarta, was selected for the CDRWH system modeling. The results showed that the CDRWH model significantly improved the performance of the volumetric reliability (VR) and time reliability (TR) systems. In addition, the model could show a comparison of total groundwater recharge (GWR) and groundwater extraction (GWE), where the GWR capacity was higher. This allows centralized rainwater management in communal tanks, thereby reducing groundwater usage. The design of this model is simple. Therefore it can be easily duplicated for application in other locations. © 2025 The Authors

关键词： Communal-based domestic rainwater harvesting (CDRWH) Groundwater extraction (GWE) Groundwater recharge (GWR) Jagakarsa-South Jakarta Reduced runoff Water supply

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Brightness sensation and judgment of turning on ceiling lumin lumin aires in daylit space

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Journal of Environmental engineering 2009年第639期74卷 539-544页

作者： Masuo, Wataru Komine, Hiromi Mochizuki, Etsuko Doctoral Program in Engineering Graduate School of Engineering Chiba Institute of Technology Japan Dept. of Architecture and Civil Engineering Chiba Institute of Technology Japan

Subjective experiment was conducted to identify the relationship between brightness sensation and the percentage of the subjectswho turned on the ceiling luminaire in an experimental room which introduced diffused direct sunlight by using reflecting panelbeside the window. Brightness sensation judged by the subjects just after they entered the room with diffused direct sunlight became higher than that without diffused direct sunlight. However diffused direct sunlight introduced into the room had no significant effects on the subjects' brightness sensation judged after they stayed in the room for 5 minutes. It was also identified that in the case when the illuminance on the desk was higher than about 200-400 lx, half of the subjects turned off the ceiling luminaire.

关键词： Luminance

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Analysis of Change Orders Based on the Type of Road Construction 2nd

Analysis of Change Orders Based on the Type of Road Construc...

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2nd International Conference of Construction, Infrastructure, and Materials, ICCIM 2021

作者： Waty, Mega Sulistio, Hendrik Civil Engineering Undergraduate Program Universitas Tarumanagara Jakarta Indonesia Civil Engineering Doctoral Program Universitas Tarumanagara Jakarta Indonesia

ISBN: (纸本)9789811679483

Change Order is a written and valid work order that changes the scope of the original contract, with compensation agreed upon by the owner and contractor. Changes can be in the form of adding or reducing the scope of work, material changes, or schedule changes. The Change Order that occurred in Banten Province stated the value of the percentage change order for various works on road projects expressed in the type of road construction. The changes that occur are job changes due to added work and changes due to less work. The purpose of this study is to determine the type of road construction that occurs in 5 change order contracts for road construction projects and the results are the largest changes in the type of drainage work construction, both the changes themselves and changes to additional work Changes due to work are less in the largest type of construction in Condition Returns and Minor Works. © 2022, The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd.

关键词： Road construction

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The Use of Integral Transform in Calculating Structured Interaction of Layered Soil Caused by Dynamic Loads

The Use of Integral Transform in Calculating Structured Inte...

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2018 Workshop on Multidisciplinary and Its Applications: Applied Mathematics, Computer Science, Information Systems, and Information Technology, WMA-Mathcomtech 2018

作者： Lesmana, Hidajat Soegiarso, Roesdiman Rastandi, Josia Irwan Department of Civil Engineering Doctoral Program Tarumanagara University Jakarta11440 Indonesia

This study applies the Integral Transform Method (ITM) to solve the problems caused by dynamic loads that work on structures and its interactions with the soil. The structure and part of the soil from the half space layer are modeled with Finite Elements (FEM) where at the boundary must be coupled with the dynamic stiffness matrix from the half space calculating used Integral Transform. To obtain the dynamic stiffness matrix of the half space, the wave equation in the elastic half space which is a coupled partial differential equations must be uncoupled first with Helmholtz's potential then it is used integral transform to find the wave equation in the transform domain. To get a response to the original domain, reverse transformation is performed using Inverse Integral Transform. This method is known as ITM - FEM Coupling. © Published under licence by IOP Publishing Ltd.

关键词： Dynamic loads

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The compressive strength improvement on softsoil subgrade with Quicklime stabilization, activated Gum Rosin and Iron Oxide 1

The compressive strength improvement on softsoil subgrade wi...

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1st International Symposium on Transportation Studies for Developing Countries, ISTSDC 2017

作者： Sofwan Samang, Lawalenna Harianto, Tri Bakri Muhidin, Achmad Hasanuddin University Doctoral Program of Civil Engineering Makassar Indonesia Hasanuddin University Department of Civil Engineering Makassar Indonesia

This study is intended to increase the compressive strength and durability of subgrade with lime, on high plasticity expansive soil. The composition of the stabilizing agent used;composition-1 is soil + 5% slakelime, composition-2 is soil + 5% quicklime, and composition-3 is soil + 5% (quicklime with rosin and iron oxide activation). The testing includes swelling test, durability test, and CBR test. That the performance of stabilization with the composition-3 was able to reduce the swelling potential on 3th day by 93.89%, decrease the volume increase potential by 93.09% and decrease the weight increase potential by 94.00% in the 3 periods of wet-dry cycle, and increase the CBR value by 758.62%. That the activation of gum rosin and iron oxide on quicklime can significantly improve the performance of lime for stabilization of expansive clay as subgrade of highway. © 2018 The Authors, published by EDP Sciences.

关键词： Iron oxides

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The effect of earthquake on architecture geometry with non-parallel system irregularity configuration

The effect of earthquake on architecture geometry with non-p...

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International Conference on Sustainability in Architectural Design and Urbanism 2017, ICSADU 2017

作者： Teddy, Livian Hardiman, Gagoek Nuroji Tudjono, Sri Doctoral Program of Architecture and Urban Diponegoro University Indonesia Departement of Architecture Faculty of Engineering Diponegoro University Indonesia Doctoral Program of Civil Engineering Diponegoro University Indonesia

Indonesia is an area prone to earthquake that may cause casualties and damage to buildings. The fatalities or the injured are not largely caused by the earthquake, but by building collapse. The collapse of the building is resulted from the building behaviour against the earthquake, and it depends on many factors, such as architectural design, geometry configuration of structural elements in horizontal and vertical plans, earthquake zone, geographical location (distance to earthquake center), soil type, material quality, and construction quality. One of the geometry configurations that may lead to the collapse of the building is irregular configuration of non-parallel system. In accordance with FEMA-451B, irregular configuration in non-parallel system is defined to have existed if the vertical lateral force-retaining elements are neither parallel nor symmetric with main orthogonal axes of the earthquake-retaining axis system. Such configuration may lead to torque, diagonal translation and local damage to buildings. It does not mean that non-parallel irregular configuration should not be formed on architectural design;however the designer must know the consequence of earthquake behaviour against buildings with irregular configuration of non-parallel system. The present research has the objective to identify earthquake behaviour in architectural geometry with irregular configuration of non-parallel system. The present research was quantitative with simulation experimental method. It consisted of 5 models, where architectural data and model structure data were inputted and analyzed using the software SAP2000 in order to find out its performance, and ETAB2015 to determine the eccentricity occurred. The output of the software analysis was tabulated, graphed, compared and analyzed with relevant theories. For areas of strong earthquake zones, avoid designing buildings which wholly form irregular configuration of non-parallel system. If it is inevitable to design a building

关键词： Architectural design

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An alternative model of retaining walls on sandy area to prevent landslides 4

An alternative model of retaining walls on sandy area to pre...

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4th International Conference on Earthquake engineering and Disaster Mitigation, ICEEDM 2019

作者： Mazni, Deni Irda Doctoral Program Dept. of Civil Eng. Faculty of Engineering Andalas University Indonesia Civil Engineering Study Program Universitas Dharma Andalas Indonesia

Landslide is one of the potential disasters that can take life and material. A way to reduce disaster risk in slopes is to improve slope stability. A challenge in improving slope stability is how to make soil retaining walls that are simple, quickly built, and workable in the process. This research focuses on laboratory tests of gravity, segmental, and pre-cast retaining walls in sands. The tested models are slopes with different segmental, pre-cast, gravity walls made of un-reinforced concrete for static loads. The slope failure patterns were observed with their load variations. There are two wall models segmental. Each segmental wall observed a collapse pattern that occurred behind the wall. Static loading is carried out step by step until collapse occurs in the segmental wall. Observations and defects are carried out during the load process until the segmental wall collapses. This research shows that segmental pre-cast retaining walls with specific models and sizes can be selected to support certainly given loads to prevent slope failure. © 2020 The Authors, published by EDP Sciences.

关键词： Landslides

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