Studying Contribution Of Associated Stakeholders In Risk Control Of Modularized Construction Under Different Project Delivery Methods: A Graph-Restricted Cooperative Games Approach,
2024
Missouri University of Science and Technology
Studying Contribution Of Associated Stakeholders In Risk Control Of Modularized Construction Under Different Project Delivery Methods: A Graph-Restricted Cooperative Games Approach, Mohamad Abdul Nabi, Islam H. El-Adaway
Civil, Architectural and Environmental Engineering Faculty Research & Creative Works
Modularization is associated with various project benefits including cost savings, schedule reduction, improved quality, among others. However, successful implementation of modular projects requires early collaboration and proactive management of various associated risks. Both project communication structures and early engagement of all project stakeholders have a great impact on risk mitigation efficiency in modular construction. The goal of this paper is to study the stakeholders' contribution in risk control of modular construction projects under different delivery methods. To this end, the authors followed a multistep methodology including (1) literature analysis to assign 17 modular risks among the various project stakeholders; (2) …
An Accurate-Pricing Estimate Game-Theoretic Model For Determining Price Escalations In Construction Projects During Economic Uncertainties,
2024
Missouri University of Science and Technology
An Accurate-Pricing Estimate Game-Theoretic Model For Determining Price Escalations In Construction Projects During Economic Uncertainties, Yasser Jezzini, Rayan H. Assaad, Islam H. El-Adaway, Mohamad Abdul Nabi
Civil, Architectural and Environmental Engineering Faculty Research & Creative Works
Economic Market Uncertainties, Such As Those Experienced During The COVID-19 Pandemic, Can Make Determining Accurate Prices Estimate For Construction Materials A Challenging Task. While Previous Research Focused On The Contractual Aspect Of This Issue By Studying Price Escalation Clauses, There Is Still A Gap In The Literature When It Comes To Proposing An Accurate Pricing Model. Thus, This Study Develops An Accurate Pricing-Estimate Game-Theoretical Model That Can Efficiently And Competitively Account For Escalations In Construction Materials Prices During Uncertain Market Conditions. First, Data On Past Producer Price Indexes (PPIs) Of Different Construction Materials Were Collected. Second, The Percentage Changes In …
Predicting Compressive Strength Of Concrete Incorporating Fly Ash, Blast Furnace Slag, And Superplasticizer Using Machine Learning Techniques,
2024
National University of Sciences and Technology, Risalpur Campus
Predicting Compressive Strength Of Concrete Incorporating Fly Ash, Blast Furnace Slag, And Superplasticizer Using Machine Learning Techniques, Muhammad Faisal Yaqub
2024 REYES Proceedings
Concrete is the second most essential element in the construction industry, and its strength requirements vary based on the specific conditions of each project. However, determining the compressive strength of concrete involves laboratory tests, which wastes a lot of time and money. Researchers have developed machine learning models that predict the compressive strength of cement-based concrete having various mixes. In this research, the compressive strength of concrete incorporating fly ash, blast furnace slag, and superplasticizer is predicted using different machine learning models, namely, Linear Regression, Random Forest Regression, Decision Tree Regression, Extreme Gradient Boosting, Light Gradient Boosting, AdaBoost, and CatBoost …
Distributed Solar Generation: Data Analytics Of The Existing Literature For Guiding Future Prospects,
2024
Missouri University of Science and Technology
Distributed Solar Generation: Data Analytics Of The Existing Literature For Guiding Future Prospects, Gasser Ali, Islam H. El-Adaway
Civil, Architectural and Environmental Engineering Faculty Research & Creative Works
Distributed Solar Generation (DSG) Systems Are Small-Scale Units That Are Located At Or Near End-Consumers Such As Residential Rooftop Photo-Voltaic (PV) Systems. DSG Has Driven A Plethora Of Multidisciplinary Research With Various Interrelated Topics And Perspectives. A Broad Understanding Of Research Directions And Potential Gaps In Knowledge Can Be Elusive. Accordingly, The Goal Of This Paper Is To Investigate The Research Trends Related To DSG And Explore Research Opportunities. This Is Achieved By Performing A Data-Driven Keyword Search And Network Analysis On A Large Dataset Of Publications Related To DSG To Quantify Topics Related To DSG And The Interconnectivity Between …
Circular Economy Strategies For Reducing Embodied Carbon In Us Commercial Building Stocks: A System Dynamics Modeling Approach,
2024
Missouri University of Science and Technology
Circular Economy Strategies For Reducing Embodied Carbon In Us Commercial Building Stocks: A System Dynamics Modeling Approach, Radwa Eissa, Islam H. El-Adaway
Civil, Architectural and Environmental Engineering Faculty Research & Creative Works
Environmental concerns over embodied carbon - which is generated during the extraction, transportation, manufacturing, construction, and disposal of building materials - have been increasing as the industry shifts to renewable energy and grid decarbonization efforts prevail. Commercial buildings, a rapidly growing sector and a major source of embodied carbon, can contribute immensely to the national climate goals by transitioning into a circular economy (CE). Nevertheless, embodied carbon research is rather dispersed, with sparse data on the actual impact of different CE strategies and how they scale on nationwide commercial building stocks. To address this research need, the goal of this …
Planning Innovation For Implementing Modular Prefabricated Construction In Housing Development In Indonesia Using A Risk-Based Iso 56002:2019 Approach To Improve Project Performance,
2024
Universitas Indonesia
Planning Innovation For Implementing Modular Prefabricated Construction In Housing Development In Indonesia Using A Risk-Based Iso 56002:2019 Approach To Improve Project Performance, Deansa Agya Rahman, Yusuf Latief
Smart City
The development of housing in Indonesia, growing rapidly due to urbanization and population growth, faces challenges in terms of land, labor, and housing backlog. Despite being innovative, modular prefabrication methods are limited by unattractive designs and high costs, slowing down construction, harming the productivity of construction companies, and hindering the growth of the national construction sector. These challenges are prevalent in various countries and are influenced by low knowledge, conservative mindsets, and inhibiting regulations. In Indonesia, additional issues include a lack of mastery of modular prefabrication methods and awareness of long-term benefits. This research identified innovative risk-based applications of modular …
Evaluation Of Hydrophobic Materials For Stabilizing Expansive Soils,
2024
University of Texas at Arlington
Evaluation Of Hydrophobic Materials For Stabilizing Expansive Soils, Suman Shrestha
Civil Engineering Theses - Archive
The swelling and shrinkage of the expansive soil as a response to moisture change is one of the significant challenges posed to infrastructure projects. The significant economic damage that is caused by the expansive soil, as well as its abundance in nature, has prompted various scientists and engineers all around the world to actively search for new and improved methods for stabilizing it. Various traditional methods, such as lime and cement treatment, have been used extensively to stabilize expansive soils and mitigate their harmful effects on the infrastructure. Although these methods are quite often effective and various studies have been …
A Multi-Life Cycle Assessment Of External Wall Insulation Strategies In An Irish Domestic Retrofit,
2024
TUDublin
A Multi-Life Cycle Assessment Of External Wall Insulation Strategies In An Irish Domestic Retrofit, Sara Carrigan, Patrick Daly, Alberta Congeduti
Articles
European Union (EU) policy and initiatives are driving both building renovation and the uptake of low-embodied carbon and circular design in the construction sector. The European Performance of Buildings Directive (EPBD) recast (2021) introduces global warming potential (GWP) methodology, and the future state will likely be embodied carbon targets for which life cycle assessment (LCA) of buildings will be required. External wall insulation (EWI) will have an important role to play in meeting targets. In this context, this paper compares the carbon emission payoff of three alternative EWI strategies that address conventional, low-carbon and circular solutions to EWI respectively, in …
การปรับปรุงรอยต่อสะพานเหล็กด้วยแผ่นพื้นเชื่อมต่อ,
2024
คณะวิศวกรรมศาสตร์
การปรับปรุงรอยต่อสะพานเหล็กด้วยแผ่นพื้นเชื่อมต่อ, พัชรพล บัวทุม
Chulalongkorn University Theses and Dissertations (Chula ETD)
การออกแบบและก่อสร้างสะพานเหล็กในอดีตมักใช้รอยต่อขยายตัว (Expansion Joint) เพื่อรองรับการเคลื่อนที่จากอุณหภูมิ แต่เมื่อใช้งานไประยะเวลาหนึ่งจะเกิดการเสื่อมสภาพ ทำให้เกิดการกัดกร่อนและความเสียหายสะสม เนื่องจากน้ำและสิ่งสกปรกซึมผ่านลงสู่โครงสร้างส่วนล่างได้ง่าย ส่งผลให้เกิดการเสื่อมสภาพของโครงสร้างบริเวณรอยต่อ เป็นภาระในการบำรุงรักษาและกระทบต่ออายุการใช้งานสะพาน การใช้แผ่นพื้นเชื่อมต่อ (Link Slab) จึงเป็นทางเลือกในการเพิ่มประสิทธิภาพสะพานเหล็กเดิม โดยมีบริเวณไม่ยึดติด (Debonded Zone) เพื่อลดความเค้นภายใน ร่วมกับการใช้คอนกรีตสมรรถนะสูงพิเศษ (UHPC) ที่มีความแข็งแรงทั้งด้านแรงอัดและแรงดึง และทนต่อการยืดตัวหลังแตกร้าว ช่วยเพิ่มประสิทธิภาพให้แผ่นพื้นเชื่อมต่อยิ่งขึ้น การศึกษานี้พิจารณากรณีสะพานเหล็กช่วงพาดเดี่ยวปกติ 25 เมตร พบว่าเมื่อใช้ UHPC กำลังอัด 110 MPa สามารถเปลี่ยนรอยต่อสะพานเป็นแผ่นพื้นเชื่อมต่อได้ต่อเนื่อง 4 ช่วงพาด เพิ่มระยะห่างรอยต่อขยายตัวจาก 25 เมตรเป็น 100 เมตร ผลการวิเคราะห์โครงสร้างพบว่าแผ่นพื้นเชื่อมต่อที่ใช้วัสดุ UHPC ช่วยลดการเสียรูปโดยภาพรวมของสะพานจากน้ำหนักบรรทุกและการเปลี่ยนแปลงอุณหภูมิ อีกทั้งยังสามารถออกแบบเพื่อลดขนาดและปริมาณเหล็กเสริมลงได้ ดังนั้น การเปลี่ยนรอยต่อสะพานเป็นแผ่นพื้นเชื่อมต่อจึงช่วยเพิ่มประสิทธิภาพในการรับแรง ลดต้นทุนบำรุงรักษาในระยะยาว อย่างไรก็ตามพบว่าอาจทำให้ฐานรองรับสะพานบางตำแหน่งต้องรับแรงเพิ่มขึ้นอย่างมีนัยสำคัญ ผู้ออกแบบจึงควรพิจารณาปรับเปลี่ยนฐานรองรับให้เหมาะสมกับภาระที่เพิ่มขึ้นด้วย
Identifying The Job Characteristics Affecting Construction Firm Employee Turnover Intention,
2024
Missouri University of Science and Technology
Identifying The Job Characteristics Affecting Construction Firm Employee Turnover Intention, Seog Jae Choi
Civil, Architectural and Environmental Engineering Faculty Research & Creative Works
Researchers have proved that employees who have the intention to quit the organization, called turnover intention, have decreased productivity and may not fulfill their duties properly. The turnover intention has a negative relationship with the quality of core job characteristics of the organization. As the construction industry has distinctive characteristics compared to other industries, the job characteristics that influence turnover intention need to be explored separately. This study identifies job characteristics of the construction industry that can affect turnover intention. Through the literature review, autonomy, task identity, required skill variety, task significance, justification in assigning work location, and job security …
Achieving Project Objectives And Improving Functions: The Benefits Of Ai And Construction Technologies,
2024
Missouri University of Science and Technology
Achieving Project Objectives And Improving Functions: The Benefits Of Ai And Construction Technologies, Fareed Salih, Islam H. El-Adaway
Civil, Architectural and Environmental Engineering Faculty Research & Creative Works
The Construction Industry Is Increasingly Incorporating Artificial Intelligence (AI) And Construction Technologies Into Projects. However, It Lags Behind Other Industries In Terms Of Digital Transformation. One Of The Reasons For This Disparity Is The Lack Of Evidence-Based Information On AI And Technologies In Construction Projects. Hence, This Research Aims To Comprehensively Understand The Benefits Of AI Techniques And Construction Technologies And Their Role In Achieving Objectives And Improving Functions. To This End, The Authors Followed A Three-Step Research Methodology. Firstly, An Extensive Literature Review Was Conducted To Identify 4 AI Techniques, 13 Construction Technologies, And 28 Benefits Relevant To Their …
Understanding The Construction Workforce Needs Of The Future: Technology, Skills, Diversity,
2024
University of Kentucky
Understanding The Construction Workforce Needs Of The Future: Technology, Skills, Diversity, Bassam Ramadan
Theses and Dissertations--Civil Engineering
The U.S. construction industry stands at a crossroads. The looming age cliff is about to present its most serious challenges yet, coinciding with a shortage of qualified skilled professionals. As the demands of the construction industry continue to grow, it continues to lack the manpower to meet those demands. In order to meet the rising demands of construction needs in the near future, the construction industry needs to focus on improving workforce performance and productivity, and increasing the size of the construction labor force. Existing research highlights the importance of technological adoption and workforce skills, and that gender and ethnic …
Agent-Based Modeling For Understanding Incentives Associated With Distributed Solar Generation,
2024
Missouri University of Science and Technology
Agent-Based Modeling For Understanding Incentives Associated With Distributed Solar Generation, Gasser Ali, Islam H. El-Adaway
Civil, Architectural and Environmental Engineering Faculty Research & Creative Works
Distributed solar generation (DSG), such as residential photo-voltaic (PV) solar panels, offers many benefits to consumers and can improve the sustainability and resilience of the electric power infrastructure. As such, many local and national authorities implemented policy incentives, such as rebates and loans with reduced interests, to promote the adoption of DSG. However, the increasing penetration of DSG is creating new obstacles for system operators due to the uncertainty in forecasting electrical power demand. There is a need to investigate how incentives affect DSG adoption. To achieve that goal, a complex system-of-systems (SoS) model is developed using agent-based modeling (ABM). …
System Dynamics Modeling For Investigating The Retention Of Skilled Labor In The Construction Market,
2024
Missouri University of Science and Technology
System Dynamics Modeling For Investigating The Retention Of Skilled Labor In The Construction Market, Tamima Elbashbishy, Islam H. El-Adaway
Civil, Architectural and Environmental Engineering Faculty Research & Creative Works
Limited skilled labor has been one of the greatest challenges facing the construction industry, especially after COVID. In 2019, around 80% of contractors in the US reported problems in hiring enough skilled workers. Labor retention has been one of the major contributors to skilled labor shortages in construction. The goal of this paper is to study the impact of key construction industry characteristics and economic conditions on skilled labor shortages. This goal is achieved by simulating the flow of skilled workers throughout the construction industry. To this end, a system dynamics (SD) model was developed to represent skilled labor and …
Investigating Price Fluctuation Transmission Among Construction Materials,
2024
Missouri University of Science and Technology
Investigating Price Fluctuation Transmission Among Construction Materials, Mohamad Abdul Nabi, Islam H. El-Adaway, Rayan H. Assaad
Civil, Architectural and Environmental Engineering Faculty Research & Creative Works
Generally, Fluctuation In One Material's Price Can Cause A Series Of Chain Reactions In The Supply Chain System, Known As Price Fluctuation Transmission, As All Materials Are Interconnected And Interrelated. None Of The Previous Studies Have Investigated Price Fluctuation Transmission Among All Construction Materials. This Paper Aims To Fill This Gap In Knowledge. The Authors Collected Producer Price Index (PPI) Data For 16 Construction Materials, Modeled The Relationship Between Each Pair Of Materials Using Vector Autoregression Technique, And Validated The Causality Using Granger Causality Test. Network Analysis Was Performed To Identify The Price Fluctuation Transmission Capacity, Susceptibility, And Intermediatory Capacity …
Streamlining Public Engagement In Transportation Projects Using Text Analytics,
2024
University of Texas at Arlington
Streamlining Public Engagement In Transportation Projects Using Text Analytics, Alireza Shamshiri
Civil Engineering Dissertations - Archive
Infrastructure projects impact a broad range of stakeholders, particularly local communities, whose engagement is critical for successful outcomes. Despite the importance of public engagement in these projects, traditional methods of capturing and analyzing public opinion often fail to fully represent the diverse, genuine perspectives involved. This has led to conflicts between community members and project sponsors. On the other hand, despite advancements in text analytics, including natural language processing (NLP) and its subfields such as topic modeling, sentiment analysis, and neural networks, their functionalities and effectiveness in analyzing public opinion in the domain of infrastructure projects have not been fully …
Skilled Worker Shortage Across Key Labor-Intensive Construction Trades In Union Versus Nonunion Environments,
2024
Missouri University of Science and Technology
Skilled Worker Shortage Across Key Labor-Intensive Construction Trades In Union Versus Nonunion Environments, Tamima Elbashbishy, Islam H. El-Adaway
Civil, Architectural and Environmental Engineering Faculty Research & Creative Works
Skilled labor plays a crucial role in ensuring that construction projects are completed on time, within budget, and to the required standards of quality and safety. However, the construction industry has been facing a labor shortage in recent years, which poses a significant challenge to the industry's growth and sustainability. Therefore, it is important to examine the characteristics of the construction skilled labor market to understand the factors that contribute to the shortage of skilled workers and develop strategies to address the issue. This paper fills this knowledge gap. To this end, the authors (1) collected and processed project documentation …
An Agent-Based Cellular Automaton Simulation Model To Study Worker Safety Behavior On Construction Sites: The Impacts Of Different Social Influence Rules,
2024
Missouri University of Science and Technology
An Agent-Based Cellular Automaton Simulation Model To Study Worker Safety Behavior On Construction Sites: The Impacts Of Different Social Influence Rules, Rayan H. Assaad, Mohamad Abdul Nabi, Ghiwa Assaf, Islam H. El-Adaway
Civil, Architectural and Environmental Engineering Faculty Research & Creative Works
The unsafe behavior of the construction workforce is one of the leading causes of accidents in the construction industry. It has been shown that construction laborers perceive the safety behavior of their co-workers and adjust their personal safety attitudes accordingly. Thus, there has been an increasing attention to studying the impacts of the social influence and norms on the safety behavior of construction workers. While existing studies examined the factors that influence the safety behavior of the construction workforce, there is little-to-no research that specifically focused on modeling the role of social influence on the safety behavior of the workers. …
A Contractual Approach To Resolving Disputes Arising From Failure To Achieve Green Certification,
2024
Missouri University of Science and Technology
A Contractual Approach To Resolving Disputes Arising From Failure To Achieve Green Certification, Bahaa Chammout, Islam H. El-Adaway
Civil, Architectural and Environmental Engineering Faculty Research & Creative Works
Green Construction Is An Approach To Reducing The Environmental Impact Of Resource-Intensive Construction. Several Certification Systems Have Been Devised And Are Globally Recognized To Provide Green Building Rating Frameworks. While A Building Can Be Designed To Achieve A Green Rating, The Rating Is Achieved Based On The Completed Facility's Actual Measured Performance. There Had Previously Been Limited Attempts To Give An In-Depth Examination Of The Remedies For Unrealized Green Ratings. As Such, This Paper Addresses This Knowledge Gap Using A Multistep Research Methodology. First, The Authors Analyzed And Classified The Nature Of Damages Resulting From Failed Green Certification Under The …
Assessing The Impact Of Skilled Labor Shortages On Project Cost Performance,
2024
Missouri University of Science and Technology
Assessing The Impact Of Skilled Labor Shortages On Project Cost Performance, Tamima S. Elbashbishy, Islam H. El-Adaway
Civil, Architectural and Environmental Engineering Faculty Research & Creative Works
Over The Past Decade, There Has Been A Notable Increase In Skilled Labor Shortages Within The Construction Industry. This Shortage Has Numerous Negative Consequences On Construction Projects, Such As Delays In Completion, Compromised Quality, And Higher Costs. Therefore, The Goal Of This Paper Is To Examine The Extent Of Skilled Labor Shortages Observed Throughout The Industry And Their Impact On The Cost Performance Of Construction Projects. To Achieve This Goal, The Authors Identified 10 Key Construction Trades That Heavily Rely On Skilled Labor. Subsequently, An Industry Survey Was Conducted To Measure The Extent Of Skilled Labor Shortages, As Well As …
