Yonghan Ahn

Sustainability in the built environment is becoming a strong force in the construction industry to achieve social and environmental benefits and to lower negative environment impacts. The research objectives of this study were to identify the main drivers and barriers of sustainable design and construction in the US construction industry and to prioritise the identified drivers and barriers with respect to implementation of sustainability in the construction industry. To achieve the research obj

The construction industry is beginning to utilize building information modeling (BIM), benefiting from the improved visualization and productivity, better coordination of construction drawings, building documents that contain embedded links to virtual information, faster delivery, and lower costs. However, construction companies often find it challenging to reorganize their company’s organizational structure to take full advantage of these benefits of BIM adoption and implementation. This study

Abstract As the benefits of green building continue to change the Architecture/Engineering/Construction industry and the number of green projects rises in the United States due to market changes, more construction firms are gaining experience with this new way of building and changing their expectations for new hires from degree-granting construction programs. This paper documents a baseline study of contractor experiences, expectations, and perceptions associated with green building conducted i

This study examined U.S. construction industry perceptions regarding key competencies for construction graduates using a survey of recruiters for over 100 construction companies located in the eastern United States. The survey asked recruiters to rate 14 key competencies for construction graduates that were identified as important in the literature: ethical issues, problem-solving skills, interpersonal skills, leadership, adaptability, collaborative skills, safety issues, interdisciplinary appli

Green Building is rapidly becoming a strong momentum in the construction industry after recognizing many negative environmental issues & problems and potential social and economical benefits. In green building, all stakeholders including an architect, a contractor, engineers, etc. need to collaborate to successfully complete integrated green design and construction that can eventually achieve the goals of sustainability in construction. Since there are many negative environmental issues and prob

ABSTRACT The hotel industry is beginning to implement green design and construction practices, saving energy, water, and resources and thus helping to preserve the environment. In addition, green building practices also can provide healthy and comfortable indoor environments to hotel occupants including guests and employees. However, there is the potential for conflict between green building practices and hotel guests' satisfaction and comfort, as the conservation of resources could detract from

The construction industry is actively adopting building information modeling (BIM) concepts and technologies to benefit from the resulting improved communication and productivity, better coordination of construction drawings, faster delivery, reduced costs, and safer construction jobsites. This requires construction professionals to understand how best to utilize BIM and to become proficient in the new and innovative skills involved. Consequently, construction and engineering programs need to in

Dielectric constant and conductivity, the so-called EM properties (electromagnetic), are widely adopted for NDT (Nondestructive Technique) in order to detect damage or evaluate performance of concrete without damage to existing RC (reinforced concrete). Among deteriorating agents, chloride ion is considered as one of the most critical threats due to rapid penetration and direct effect on steel corrosion. In the work, cement mortar samples with 3 w/c (water-to-cement) ratios and 4 levels of chlor

The goals of sustainability are to meet people's basic needs and improve their quality of life while simultaneously ensuring that the natural systems, resources, and diversity upon which they depend are maintained and enhanced, both today and for future generations. Construction activities over a facility's life cycle are also connected with the broader problems and issues affecting the environment, including global warming, climate change, pollution and the depletion of valuable resources. Buil

Modular integrated construction (MiC) is an innovative technology that minimizes the adverse impacts of construction not only in terms of material resources, energy consumption and environmental issues but also by reducing construction times and costs. The widespread adoption of these practices could therefore contribute to the construction industry’s sustainable development. Despite the increasing public attention of MiC with a number of published works in various aspects, there is still a lack

As the construction business environment becomes increasingly complex and competitive, business model innovation is being accepted as an essential factor in sustaining competitive advantage in the international construction market. Understanding existing business model types is a crucial part of business model innovation since business model types represent the status of current business models and hint toward business model innovation. However, the classification of business model types has rar

Construction stakeholders implement sustainable strategies and technologies to achieve the ‘triple bottom line’ of a road’s ecological, social, and financial performance. The primary goal of a green road is to reduce environmental and social problems and enhance economic prosperity in the surrounding area as a result of the road construction. To achieve these ends, sustainable road rating systems have been developed in a number of countries that integrate sustainable practices into their specifi

To realize sustainable construction, planning for future maintenance costs is essential. In the case of multi-family housing, various maintenance issues can be expected to appear starting 10 years after completion. Therefore, preventive maintenance must be implemented in a systematic manner to cope with the problems caused by the natural aging of multi-family dwellings and to maintain a sustainable level of quality for the properties. In this study, maintenance costs were investigated for 224 mu