Digital Commons Network^™

Sustainability In Valuation: Emerging Ai-Driven Real Estate Approaches, Mihaela Meslec, Isabelle Wrase, Matthias Haase

CIB Conferences

In response to evolving sustainability regulations, this study addresses the need to quantify sustainability within real estate valuations. Traditional Discounted Cash Flow (DCF) models face limitations in capturing the full impact of Environmental, Social, and Governance (ESG) factors, resulting in undervaluation of sustainable assets. The proposed solution shows the evolution of the DCF model into a meta-instrument for the real estate life cycle integrating sustainability and digitalization. The future proof DCF framework introduces seven key new tech approaches driven by emerging AI and established Building Information Modeling: dynamic cash flow and discount rate adjustments, predictive sustainability analytics, scenario modeling, advanced …

From Energy To Health: Role Of The Ventilation Systems In Energy-Retrofitted Buildings, Elham Maghsoudi Nia, Atze Boerstra Prof

CIB Conferences

The transition towards zero-energy buildings by 2050 has driven retrofitting initiatives across Europe, focusing on renovating existing buildings through improving insulation, solar panel installations, window replacements, and implementation of heat pump systems. While these retrofitting strategies contribute to energy efficiency, they also introduce new challenges related to indoor air quality and occupant health, particularly in highly insulated, and airtight buildings. This paper aims to investigate the intersection of energy retrofitting of buildings and occupants' health, with a specific focus on mechanical ventilation systems. By reviewing relevant literature on health issues and energy retrofitting in buildings, building-related illness is explored. The …

A Review Of Research On Enhancing The Post-Disaster Recovery Of Interdependent Critical Infrastructure Systems, Jiaxu Huang, Nan Li

CIB Conferences

Due to the increasing frequency of disasters, the ability to quickly recover from disaster-induced damage is crucial for critical infrastructure systems (CISs). The interdependencies among CISs pose a challenge that must be effectively addressed to ensure more efficient recovery measures. To enhance the resilience of interdependent CISs, an increasing number of studies have utilized simulations or real-world data to understand the mechanisms of these interdependencies and proposed possible solutions in the post-disaster phase. This paper examines this area of research and categorizes existing studies into simulation-based and data-driven approaches, summarizing existing strategies for improving interdependent CIS resilience through expedited recovery …

The Impact Of Hygrothermal Aging On Stability And Water Pressure Resistance Of Building Envelope Membranes, Mohammad Hossein Yari, Elnaz Esmizadeh, Marzieh Riahinezhad, Itzel Lopez-Carreon, Esrat Jahan, Peter Collins, Maurice Defo, Lin Wang, Elena Dragomirescu

CIB Conferences

Building membranes, specifically those designed as water-resistive barriers (WRBs), play a pivotal role in construction, serving as protective barriers against moisture infiltration from environmental stresses like wind-driven rain, thereby influencing the durability of buildings. As these materials age, changes in their structure can significantly affect their performance in resisting water ingress, with potential implications for the durability of building structures. Therefore, this research investigates the transformative effects of hygrothermal aging on the water-resistance performance, hydrophobicity, chemical integrity, and thermal resistance of the WRBs with a specific focus on non-woven polyethylene, self-adhesive polyethylene, and asphalt-saturated kraft paper, which represent a diverse …

Sdg 12 Sustainable Consumption Through Reduction Of Cost Overrun By Identification Of Major Construction Waste Components Using The Pareto Rule, Gabriel Nani, Priscilla Dufie Darko, Blessing Mawunyo, Emmanuel Owusu

CIB Conferences

The United Nation’s 2030 Agenda for Sustainable Development, particularly SDGs 11 and 12, emphasizes sustainable cities and responsible consumption. The construction industry, with its high material consumption and waste generation, is a key player in achieving these goals. Waste not only escalates environmental concerns but also contributes significantly to cost overruns- a critical issue in construction projects worldwide. This study aims to identify the major construction waste components driving cost overruns and propose effective management strategies. The quantitative research method was employed, involving a questionnaire survey of 101 construction professionals. Purposive sampling and Cochran’s formula were used to determine a …

Digital Twin Insights From A Green Star-Rated Learning Environment, Ashvin Manga Mr., Theo C. Haupt, Chris James Allen Mr.

CIB Conferences

This study investigates the application of digital twin technology to enhance energy efficiency and indoor environmental quality (IEQ) in a Green Star-rated learning environment. Focusing on Nelson Mandela University’s Business School, the research employed a mono-method quantitative approach, gathering real-time data through IoT sensors. The sensors were integrated into a digital twin platform using AWS IoT TwinMaker, enabling multi-sensor collaborative visualisation of building performance data. Findings reveal that CO₂ levels frequently exceeded recommended limits, even at moderate occupancy, indicating ventilation inadequacies. Additionally, the performance gap between design expectations and operational outcomes was highlighted, especially regarding energy efficiency and IEQ, suggesting …

Examining The Prevalence Of Job Stressors Among The South African Construction Workforce, Mohlomi T. Raliile

CIB Conferences

This study examined the prevalence of job stressors among the construction workforce in South Africa. The objectives were to determine the prevalence of organisational, extra-organisational, and personal stressors among the workforce. This exploratory study was conducted on a conveniently sampled population of construction personnel under three categories: construction professionals, construction artisans/tradesmen and construction labourers. A questionnaire survey was distributed to collect quantitative data via Google Forms and email, and some were distributed manually on construction sites to capture the labourers. In this cross-sectional study, and the respondents were individuals employed by civil and building construction companies. Face validity was used, …

A Theoretical Exploration Of Digital Technologies For Transitioning Towards A Circular Built Environment., Idris Soliu, Giovanni C. Migliaccio

CIB Conferences

Circular Economy and Digital Technologies are emerging models recently identified as potential fields for achieving sustainable practice in various industries, including the built environment. Circular Economy has emerged as an alternative to the conventional linear "take-make-use-dispose" system of production and consumption to design out waste, reduce CO₂ emission, and regenerate nature through principles of circularity. While digital technologies have been identified as critical enablers of the circular economy across sectors, their implementation in the built environment remains fragmented. This paper presents a theoretical exploration of how digital technologies, such as Building Information Modeling, Digital Twins, the Internet of Things, …

Review On Strength Properties Of Graphene Incorporated Sustainable Concrete By Reducing Cement Quantity, Balkis A, Shashank B. S, Rajesh Goyal, Anil Kashyap

CIB Conferences

Abstract

Graphene, an allotrope of carbon with outstanding mechanical, physical, and thermal properties, is increasingly gaining recognition in scientific research. Its unique nanostructure has revolutionized cement composites by enhancing their mechanical strength, durability, and overall performance. The construction industry is actively exploring new, sustainable materials that improve the mechanical properties of concrete. Graphene-based nanomaterials like Graphene oxide (GO), Graphene Nanoplates, and Carbon Nanotubes (CNTs) have gained significant attention due to their superior reinforcement capabilities. This study examines the impact of GO in cement composites incorporating supplementary cementitious materials (SCMs) such as fly ash, silica fume, rice husk ash, and geopolymer …

Air Quality In Smart Cities: Beyond Technology, Katerina Prevelianaki, Fred Sherratt, Christian Henjewele, Nezhapi-Delle Odeleye

CIB Conferences

Being ‘smart’ remains a prominent goal that many cities wish to achieve, not only for the excitement the awarding of ‘smart city status’ can generate, but also because smart cities are seen as the way to overcome current and future urban challenges. The International Organisation for Standardisation (ISO) is globally recognised for their standards, and in 2019 they released their Smart City Indicators standard (ISO 37122) which has since become a leading standardised methodology adopted by city leaders to guide their city smartness efforts. The ISO 37122 also links its smart city indicators to the United Nations (UN) Sustainable Development …

Reimagining Community Engagement: A Social Network Driven Approach To Flood Resilience, Olutayo Ekundayo, David Proverbs, Subashini Suresh Dr, Chaminda Pathirage, Ezekiel Olatunji

CIB Conferences

Community Engagement (CE) is crucial for building flood resilience and empowering communities to participate actively in disaster preparedness, response, and recovery. However, many existing CE approaches neglect key social dimensions, such as inclusivity, social vulnerabilities, and community-driven strategies. This oversight often limits community ownership and reduces effectiveness. This research critically examines the social drivers of community engagement in flood resilience, emphasising the need for a Social Network approach to strengthen social connections, enhance participation, and foster sustained resilience. A review and synthesis of existing literature, spanning disaster risk management, flood resilience, social networks, behavioural science, and community engagement, identifies key …

International Comparison Of Training Goals In Wooden Construction Education - Focusing On Contents Of Wooden Building Systems -, Rio Shibata, Shin Murakami, Miho Akita, Norie Kawano, Satoka Takahashi

CIB Conferences

To contribute to realizing a decarbonized society, the use of wood in buildings is being promoted worldwide. In recent years, new structures, construction methods, and materials for large wooden buildings have been developed. Support for the acquisition of design techniques, construction techniques, and techniques for understanding the performance of wooden buildings has become indispensable for introducing wooden construction. Japan and Finland have abundant forest resources and a long history of wooden construction. In recent years, the relaxation of regulations and the development of new materials have accelerated the movement toward the realization of large wooden buildings. The purpose of this …

Circular Renovation Of Urban Infrastructures: A Multi-Project Perspective, Shahab Ashrafi, Hans Wamelink, Ruben Vrijhoef

CIB Conferences

The construction sector is a significant contributor to global waste. With growing concerns about sustainability, adopting circularity in construction projects has become increasingly important. The urban infrastructure sector has characteristics that present valuable opportunities for circularity. This research explores these opportunities by focusing on the renovation of urban infrastructure components through a multi-project perspective. This innovative approach in the field of circular economy reveals new possibilities for material reuse by integrating material flows across multiple projects. By identifying the supply and demand of secondary materials, designers can incorporate them during the redesign phase. Additionally, the synchronization of project phases can …

Exploring The Definition Of Capacity In Sustainable Construction: A Knowledge Mapping Approach, Simeng Li, Elrasheid Elkhidir Dr, Suzanne Wilkinson, Monty Sutrisna

CIB Conferences

The global environmental crisis is becoming increasingly severe, and sustainable construction is widely regarded as a key solution for mitigating climate change. Improving sustainable construction capacity is significant and challenging for advancing the development of the sustainable construction industry. Defining "capacity" is the first step in addressing this challenge. However, capacity possesses multidimensional attributes, and current research does not clearly identify its meaning within the sustainable construction domain. This paper aims to provide insights into the definition of capacity in sustainable construction. Specifically, this research aims to identify the core concept, sub-areas, and emerging trends related to capacity within the …

A Transformer-Based Semi-Supervised Learning For Occupant Feedback Evaluation, Min Jae Lee, Ruichuan Zhang

CIB Conferences

Indoor Environmental Quality (IEQ) focuses on ensuring that occupants experience comfortable and healthy indoor settings, covering factors such as temperature, humidity, air quality, acoustics, and lighting. Assessing IEQ from occupants’ perspectives is challenging due to the subjective natures of comfort and health perceptions. Existing methods for collecting direct occupant feedback, including surveys, questionnaires, observations, and interviews, frequently result in insufficient data, limiting the comprehensive and holistic understanding of occupant satisfaction in indoor environments. In response to these challenges, this paper proposes a semi-supervised learning-based framework aimed at deriving a metric of comfort and health satisfaction from sparse occupant feedback. Semi-supervised …

Stakeholder Orientation Dimensions For Enhancing Safety Performance, Eunice Achina Agyemang, Musonda Innocent, Sam Zulu

CIB Conferences

In the high-risk construction industry, it is essential to optimize safety performance to improve project outcomes, establish a strong organizational reputation, and ensure the safety of workers. Despite ongoing safety efforts, accidents persist, highlighting the need for improved safety strategies. Thus, this study examines how stakeholder orientation (a principle of stakeholder theory that emphasizes the importance of addressing diverse stakeholder interests) impacts safety performance in construction projects. Using the PRISMA framework, this study conducted a systematic literature review of 744 articles from Scopus database. A total of 20 relevant papers were discovered and thoroughly analysed. Six dimensions of stakeholder orientation …

Rainwater Harvesting In Residential Building Located In Brazilian Unesco World Heritage City, Alberto C. Lordsleem Jr., Everton G M Silva, Micaella R F Moura

CIB Conferences

Ensure access to water and sanitation is one of the United Nations (UN) Sustainable Development Goals (SDG) to promote human health and well-being. Improving water-use efficiency is one key to reducing water stress due to rapid population growth, urbanization and increasing water needs from agriculture, industry, and energy sectors. This phenomenon is observed in less affluent regions and also in major urban centers, such as Olinda, a coastal city located in the northeast region of Brazil, where water supply issues are frequent, even in a city designated as a UNESCO World Heritage Site. This paper present an alternative for better …

Investigating The Causes Of Escalation Of Disagreements Over Delay Assessments, Vasil A. Atanasov

CIB Conferences

Project delays are a common occurrence in the construction sector. Such delays generate disputes over questions of law, fact and/or delay assessments. The last are costly, persistent and prevalent worldwide which has produced a role for professionals specialising in construction delay analysis. Although construction delays are inevitable, the escalation of delay disagreements from claims into disputes is often avoidable as construction contracts typically offer claims (or extension of time) procedures to resolve such disagreements before they become full-fledged disputes. Although this is an underresearched area, the published literature suggests that the main cause of the escalation of delay claims into …

Off-Site Construction Smes Transition To Net-Zero, Nwakaego Onyenokporo, Patricia Tzortzopoulos Prof., Sara Biscaya, Tamiris Capellaro Ferreira, Nic Clear Prof., Rakesh Mishra Prof.

CIB Conferences

With the imperative to combat climate change and achieve net-zero targets by 2050, the construction industry faces growing pressure to adopt sustainable practices and reduce carbon emissions. Small and medium-sized enterprises (SMEs), which constitute the majority of the industry, often lack the resources and expertise to make this transition effectively. This paper investigates how off-site construction SMEs can implement actions to achieve net-zero carbon emissions, focusing on the integration of sustainable practices through Building Information Modelling (BIM) and Lean principles within a small off-site construction company. Using an action research approach, the study employed iterative cycles of planning, action, and …

Machine Learning Techniques To Forecast Fatal Accidents On Construction Sites In Brazil, Filipe Dos Santos Freitas, Mirian Caroline Farias Santos, Roseneia Rodrigues Santos Melo, Paulo Henrique Ferreira, Dayana Bastos Costa

CIB Conferences

Global estimates indicate that the construction industry has one of the highest rates of occupational accidents. Given this scenario, the sector has adopted emergent technologies to improve safety conditions and decision-making. Thus, machine learning (ML) emerges as a promising tool to streamline data analysis besides being used to predict events based on datasets. In construction, the use of the ML model to predict site accidents remains emerging without studies using historical data from emerging South and Latin American countries. Therefore, this paper aims to develop a prediction model using machine learning for fatal accidents using historical data from construction. The …

Collaborative Design Technologies And Methods For Sustainable Built Environment, Kalle Kahkonen, Jaakko Huusko, Taija Puolitaival

CIB Conferences

In the present design process, designers still operate relatively alone, each in their own "swimming lane". Coordination between different design trades typically takes place in BIM coordination meetings organized by consultants. The process is reactive, and the feedback loops are long and error prone. Reaching successfully multi-criteria design solutions can be very difficult. This is eminently a burning issue with sustainability which is imposing new criteria and requirements for design solutions. Collaboration is widely understood as a necessity to successfully manage the ever-increasing complexity and demands of construction. Advanced collaboration consists of frequent reliable information sharing and constant working together. …

Integrating Nature Into Norms: Evaluating Biophilic Design Attributes In Building Rating Systems, Hoda Alemrajabi, Ruichuan Zhang, Tanyel Bulbul, Annie Pearce

CIB Conferences

This paper examines the integration of biophilic design attributes within building rating systems. Biophilic design, which emphasizes human connections to the natural environment through the use of natural elements in architectural and landscape design, has been increasingly recognized for its positive effects on human well-being and environmental sustainability. Despite its growing popularity, the extent to which biophilic design principles are incorporated into existing building rating systems remains unclear. To address this gap, our study systematically reviews 29 prominent building rating systems worldwide, identifying and categorizing credits that align with biophilic design attributes, such as sunlight, natural shapes, and water. Through …

Analyzine Trends In Capital Construction Expenditures, Ankita Pradeep Joshi, Theodore J. Weidner

CIB Conferences

This research examines expenditures for renewal/renovation construction and research grant income in higher education science and engineering research facilities to identify correlations. A positive correlation suggests income benefits accrue to institutions that preserve facilities while a negative correlation suggests facilities have limited long-term value and replacement is a more cost-effective means to sustain the physical infrastructure. The research has implications for other non-profit agencies and how they determine whether to maintain facilities or allow development of a significant capital renewal backlog.

Exploring And Comparing Gendered Experiences In Construction Management Education In Ireland, Joanne White

CIB Conferences

Despite efforts by Irish governments and construction industries, women are still distinctly underrepresented in 3rd level construction management courses in Ireland. This study investigates the age-old barriers and challenges faced by women in pursuing careers in construction management, focusing on gender stereotypes, the industry's image, access to STEM (Science, Technology, Engineering and Maths) education, and the role of career guidance. Using a mixed-methods approach, the research combines a literature review with semi-structured interviews conducted with eight students from Technological University Dublin. The findings reveal that gender stereotypes remain pervasive, with female students facing challenges such as lack of female role …

The Role Of Risk Tolerance In Peer-Influenced Risk-Taking Behaviors On Construction Sites, Shiva Pooladvand, Sogand Hasanzadeh

CIB Conferences

The inherently social environment of construction job sites can exacerbate high incident rates due to social influence and peer pressure. Workers’ risk perception (RP) and risk tolerance (RT) have been identified as key factors contributing to their involvement in high-risk behaviors. However, there is a paucity of research on how workers’ RT, as a personality trait, impacts and moderates the relationship between RP and risk-taking behaviors in the presence of a risky peer. To fill this gap, this study empirically examined the changes in workers’ stress levels, due to the perceived risk, and risk-taking behaviours given their RT in the …

Fire Safety On Green Roofs: Analysis Of Plant Species And Sustainable Solutions For The Brazilian Context., Larissa Carolina Diniz Alves Ms., João Paulo C. Rodrigues

CIB Conferences

such as thermal comfort, reduction of urban heat islands, energy efficiency and promotion of sustainable development. However, their implementation brings challenges, especially with regard to fire safety, since plants can increase the fire risk and spread due to their flammability and interaction with other building materials. This article investigates fire safety in buildings with green roofs, focusing on the conditions of the state of Minas Gerais, Brazil. The research analyzes plant characteristics, such as density, moisture content and leaf structure, which directly affect their combustibility. Dry plants with volatile compounds have a higher flammable potential, while those with thick leaves …

Analysis Of Social Value Creation In Infrastructure Delivery To Achieve The Sustainable Development Goal 3, Omoleye Ojuri, D'Maris Coffman, Priti Parikh

CIB Conferences

Good health and well-being are key indicators and a precondition for sustainable development, allowing people to enjoy fulfilling lives, receive education and be productive members of society. Social value is the positive impact of infrastructure projects on long-term well-being. Infrastructure social value (SV) delivery is a practical national/organisation-level vehicle for realising the United Nations' Sustainable Development Goal Three - ensuring healthy lives and promoting well-being for all ages. However, infrastructure SV delivery is often commissioned when the project is well underway or completed, so mechanisms to collect the required data to quantify SV impact were not set up. By that …

Usability Of Passive Back Exoskeletons And Ergonomic Handles For Transportation Maintenance Workers: A Field-Based Study In Shoveling, Xinran Hu, Xingzhou Guo, Yunfeng Chen, Jiansong Zhang

CIB Conferences

Shoveling activities are associated with back and shoulder injuries due to its high frequency and physical demands. Ergonomic handles and back exoskeletons (EXOs) are two commonly used tools to reduce ergonomic risks and prevent physical injuries during shoveling. Previous research has evaluated the usability of back EXOs in various activities, but most are limited to laboratory environments and there is a lack of research on usability of back EXOs in field shoveling activities. Previous research has focused on modifying the design of ergonomic handles to improve shovel ergonomics, but there has been limited evaluation of ergonomic handles’ usability in practical …

Evaluating Workers’ Well-Being In Off-Site Construction Facilities, Sena Assaf, Mohamed Assaf, Ahmed Bouferguene, Mohamed Al-Hussein

CIB Conferences

Well-being is defined as “the way people feel and function on a personal and social level and how they evaluate their lives as a whole”. It encompasses several interrelated dimensions, including the physical, emotional, social, financial, environmental, vocational, and intellectual. An individual’s well-being is influenced not only by their personal experiences but also by their experiences at the workplace. Individuals spend nearly one-third of their life at work and tend to carry their experiences into non-work-related domains. As a result, promoting a work environment centered on employees’ health, happiness, and satisfaction not only is important to ensure efficiency and productivity …

A Systematic Literature Review On The Thermal Behaviour Of Building Elements Constructed Through 3d Concrete Printing (3dcp), Asad Ur Rehman Bajwa, Don A.S. Samarasinghe, Claire L. Flemmer, Ding Wen Bao

CIB Conferences

3D concrete printing (3DCP) is increasingly used in construction due to its high speed, low waste, and geometric freedom capabilities. Researchers have signaled that 3DCP can help achieve long desired sustainability in the construction industry. Understanding the thermal behaviour of 3DCP based building elements could play a crucial role in attaining an energy efficient envelope, yet research on assessing the thermal behaviour of printed elements remains limited. This systematic literature review of records published between 2013 to 2023, provides a comprehensive overview of the thermal behaviour of several 3DCP-based materials and the important factors affecting heat transfer properties. The most …