Volumetric modular construction (VMC) needs streamlined supply chain coordination to achieve its full potential benefits, such as reduced schedule and cost, with consistent quality. Studies have noted that blockchain technology has significant potential for increasing the efficacy of supply chain coordination by providing reliable information sharing among VMC stakeholders. However,…
Virtual reality (VR) has been studied extensively in the construction industry, particularly for safety training, as it is capable of simulating the hazardous areas of a construction site in a virtual environment that enables workers to visualize the real scenario before being introduced to job sites. However, at present, VR…
Construction workers can be adequately protected by wearing a safety helmet while working. Due to the discomfort, the workers take off safety helmets while working, which is unsafe behavior and causes an injury or fatality in case of a fall. Therefore, a practical and handy solution is needed on the…
A fall detection and classification system is crucial for reducing the severe consequences of falls, which account for the leading cause of accidents on construction sites. Wearable sensors are one of the technologies used to detect falls. Although much academic work has been dedicated to the study of this class…
In order to accomplish diverse tasks successfully in a dynamic (i.e., changing over time) construction environment, robots should be able to prioritize assigned tasks to optimize their performance in a given state. Recently, a deep reinforcement learning (DRL) approach has shown potential for addressing such adaptive task allocation. It remains…
In South Korea, industrial accidents continue to increase in frequency, with construction accidents accounting for more than a third of all industrial accidents. Specifically, by preventing fall accidents, the death rate from accidents can be reduced by 50%. Fall protection is required to prevent fall accidents, and investigating the reinforcement…
Fall from height (FFH) is the most significant cause of occupational fatalities in the construction industry, accounting for approximately 54% of all accidents. Such fatalities have decreased considerably due to the use of personal protective equipment (PPE). However, the manual monitoring of compliance to PPE is complex and challenging for…
As a temporary facility, scaffolding has an essential role in providing a work environment at height in the construction industry. According to the Occupational Safety and Health Administration (OSHA), approximately 65% of laborers work on scaffolding. Scaffolding work information needs to be effectively managed with reliability to provide a safe…
According to the Center for Construction Research and Training (CPWR) and the Korea Occupational Safety & Health Agency (KOSHA), falls from ladders are a leading cause of fatalities. The current safety inspection process to enforce height-related rules is manual and time-consuming. It requires the physical presence of a safety manager,…
Monitoring the unsafe behavior of construction workers at risky elevations is essential for eliminating fall from height (FFH) accidents. This study aims to bridge the gap between technological advancements and their application in the construction industry by introducing real-time hybrid vision- and IoT-based systems for safety engineers to monitor the…
While human intelligence can easily recognize some characteristics of classes with one or few examples, learning from few examples is a challenging task in machine learning. Recently emerging deep learning generally requires hundreds of thousands of samples to achieve generalization ability. Despite recent advances in deep learning, it is not…
Surveillance cameras have become increasingly significant in the field of construction safety monitoring. With visual information, these cameras support safety managers to identify the potential hazards and deliver prompt feedback. However, developing the surveillance camera plan remains challenging in considering the workspace of working at height activities and the dynamic…
Construction safety rules play a vital role in mitigating accidents and fatalities at construction sites. Many researchers are currently devoted to monitoring the rule compliance using computer vision-based approaches; however, such systems are still not mature for application at construction job sites. A single autonomous source’s job-site safety control such…
In total, 44.3% of particle matter 10 (PM10) is fugitive dust, and one of the main sources of fugitive dust generation in Korea is construction work (22%). Construction sites account for 84% of the total business places that have reported fugitive dust generation. Currently, the concentration of fine dust at…
Fall from height (FFH) at the construction sites has the major portion of the total accidents; it may be due to traditional methods of monitoring at the site. For the site manager, manual monitoring is difficult, as some workers avoid wearing PPE at the risk area. To overcome this issue…
The construction safety rules play a vital role in mitigating accidents and fatalities at the construction site. Many researchers are currently devoted to monitoring the rule compliance using vision intelligence-based approaches; however, such systems are still not yet mature to be applied in construction job sites. A single autonomous source’s…
Falls from height (FFH) are still a leading cause of fatalities in the construction industry, which also includes scaffolding-related accidents. Despite regular safety inspections, numerous scaffolding-related accidents occur at the construction site. The current safety monitoring practices are not only impractical but infeasible due to dynamicity of construction environment. Since…
Dust generation is generally considered a natural process in construction sites; ergo, workers are exposed to health issues due to fine dust exposure during construction work. The primary activities in the execution of construction work, such as indoor concrete and mortar mixing, are investigated to interrogate and understand the critical…
Since the enactment of the Occupational Safety and Health Act in 1981, the Korea Occupational Safety and Health Agency has endeavored to prevent fall accidents in the construction industry. However, many fatalities still occur in the South Korean construction industry. Meanwhile, the United States improved various systems and conducted studies…
Construction Progress monitoring noticed recent expansions by adopting vision and laser technologies. However, inspectors need to personally visit the job-site or wait for a time gap to process data captured from the construction site to use for inspection. Recent inspection methods lacks automation and real-time data exchange, therefore, it needs…
Construction sites are considered as complicated work environments. Various concurrent activities may overlap apropos to time and workspace, predisposing them to spatial–temporal exposure and repetitive accidents. Detecting the characteristics of repetitive accidents before the construction stage contributes to prevent injuries and fatalities caused by spatial—temporal conditions at construction job sites.…
The construction site is prone to a considerable number of accidents due to its dense and complex nature. Accidents due to falling from opening at the construction site are leading reasons for severe injuries and sometimes fatalities. Openings and Holes are made on floors and roofs during the building construction…
As construction projects resume worldwide and workers return to the job site, the possibility of transmitting the Covid-19 could be added to the extensive list of risks confronting workers in the construction sites; thus, the workers need to work alone in an assigned activity. Many workers are already working alone…
Construction sites are considered as complicated work environments. Various concurrent activities may overlap apropos to time and workspace, predisposing them to spatial–temporal exposure and repetitive accidents. Detecting the characteristics of repetitive accidents before the construction stage contributes to prevent injuries and fatalities caused by spatial—temporal conditions at construction job sites.…
Identifying hazardous zones is one of the priorities and duties of construction safety monitoring. With the emergence of vision intelligence technology, hazardous zones detected by AI algorithms can support safety managers in predicting potential hazards as well as making decisions. However, the risky area in images/videos continues to suffer from…
Despite recent developments in monitoring and visualizing construction progress, the data exchange between construction jobsite and office lacks automation and real-time recording. To address this issue, a near real-time construction work inspection system called iVR is proposed; this system integrates 3D scanning, extended reality, and visual programming to visualize interactive…
The recognition of the risk hazards is a vital step to effectively prevent accidents on a construction site. The advanced development in computer vision systems and the availability of the large visual database related to construction site made it possible to take quick action in the event of human error…
Many construction workers are getting injured or killed in fires and explosion accidents each year. The workers are prone to severe fatal accidents due to unavailability of permanent firefighting system in many construction sites, thus they typically rely on portable firefighting equipment (PFE) to minimize fire damage. Many occupational health…
Construction progress monitoring and visualization have recently undergone advanced development. However, the data exchange process between construction offices and jobsites still lacks automation and real-time data records. Furthermore, an information gap between construction offices and jobsite activity persists, and progress inspectors still need to visit jobsites to check progress and…
Construction jobsites remain among the most dangerous workplaces, with fatalities, accidents and injuries still plaguing the industry. Safety education is critical in fostering graduates capable of ensuring safe construction work; however, current learner assessment methods in pedagogy fail to ascertain the possession of safety knowledge and skills as they would…
Due to dynamic and constantly changing nature of construction projects, the highest accident and fatality rate makes the industry infamous in mitigating hazardous safety risks and protecting workers at jobsites. Despite of enormous efforts and serious attention by government agencies and professional bodies, current safety management still relies on traditional…
Fires pose an enormous threat to human safety and many spectacular fires in under-construction buildings were reported over the past few years. Many construction sites only rely on fire extinguishers, as under-construction buildings do not contain a permanent fire protection system. Traditional safety planning lacks a justified approach for the…
Construction safety has been a major area for research for an extensive time as the number of accidents, injuries and deaths has not significantly declined, despite strong implementation of safety laws and major efforts of the construction safety professionals. According to the Ministry of Employment and Labor, Korea (MOEL)[1] from…
With the recent rapid advancement of vision technologies, recognized research widely applies to resolve the construction industry’s remaining problem as known quality, cost, time, and safety. However, there are few studies on how to place visual devices for effectively collecting images/videos on construction activities. This study proposes a framework for…
Falls are the leading cause of construction site accidents and made up more than 60 percent of all construction-related deaths in 2018, according to the Korea Occupational Health and Safety Administration (KOSHA). Accordingly, the government conducts intensive management and supervision of scaffolding and scaffolding installation at small sites while inducing…
Remicon, an important material constituting the structure of a building, needs an efficient quality management system throughout the entire process from production to delivery, including production management, shipment-transport management, and delivery management, to ensure the required performance by the contractor. Nowadays Remicon factories becoming smart factories and automated form for…
Construction progress monitoring and visualization have recently undergone advanced development. However, the data exchange process between construction offices and jobsites still lacks automation and real-time data records. Furthermore, an information gap between construction offices and jobsite activity persists, and progress inspectors still need to visit jobsites to check progress and…
In order to ensure the safety of construction workers during the construction process, supervision of violations of safety regulations and control of hazardous situations not recognized by the workers are continuously required. However, due to the dynamic nature of the construction site, the hazardous situation is always changing and there…
Poor quality in construction could lead to the cash flow disruption, project delays, profit loss in projects due to rework, and some time to the property damage or human loss due to accidents. In order to ensure the quality of work, quality control (QC) departments inspect the construction work compliance…
Temporary safety facilities (TSFs) are an essential support system providing necessary protection to workers during construction activities, which are targeted towards preventing the occurrence of incidents and accidents at the construction site; however, the schedule and location of installation and demolition of TSFs continue to rely on labor experience, and…
In order to proactively prevent accidents and injuries in construction, tertiary safety education should equip students with adequate safety knowledge and skills. However, in most construction curricula, safety is considered a low priority, and safety education is delivered in isolation, without sufficient interaction and practical experience to improve safety learning.…
Soil excavation is a fundamental step of building and infrastructure development. Despite strong enforcement of construction best practices and regulations, accidents in construction industry are comparatively higher than other industries. Likewise, significant increase in injuries and fatalities are recently reported on geotechnical activities such as excavation pits and trenches. Academic…
Construction safety education plays a crucial role in improving the safety performance in the construction industry. Many research works have successfully adopted computerized three-dimensional model-based virtual reality (3D-VR) to provide students with adequate safety knowledge and skills before they enter construction sites. Despite the advantages of improving learning outcomes, 3D-VR…
Despite substantial efforts to improve construction safety training, the accident rate of migrant workers is still high. One of the primary factors contributing to the inefficacy of training includes information delivery gaps during training sessions (knowledge-transfer). In addition, there is insufficient evidence that these training programmes alone are effective enough…
Accidents still prevail in the construction industry, resulting in injuries and fatalities all over the world. Educational programs in construction should deliver safety knowledge and skills to students who will become responsible for ensuring safe construction work environments in the future. However, there is a gap between the competencies current…
Construction safety education plays a vital role in equipping students with concrete safety knowledge and promoting safety performance prior to entering construction sites. However, safety topics are not given adequate attention in most construction curricula and traditional pedagogic tools fail to provide practical experience or sufficiently engage students in acquiring…
Value engineering is a proven management technique for generating benefits and improving the value of construction projects. However, due to kludgy and inconvenient past data and free-thinking techniques, idea generation during VE workshop is time-consuming and often relies on VE participants’ experience. Although various studies have developed technical systems related…
Construction accidents, injuries, and fatalities have not declined significantly, despite continuous efforts from researchers, safety professionals, and strongly-enforced safety laws. In managing safety, construction personnel are required to access a variety of rules, regulations, guidelines, and documents. However, finding the right contents, and communicating them to right person tends to…
Despite the consistent growth of global markets and emergence of cutting-edge technologies, construction jobsites remain among the most dangerous workplaces with extremely high accidents rates. In the safety management process, it is necessary to review and assess a variety of safety documents and data. Numerous public agencies provide open access…
Defect data contains knowledge about specific work conditions. In order to prevent reoccurrence of defects, a data feedback mechanism is required. However, most defect data are stored in unstructured ways, resulting in the fundamental problem of data utilization. This paper proposes a novel framework by using BIM and linked data…
Building construction education is crucial in ensuring university students are adequately knowledgeable and competent to meet industry demands. Attributable to the changeable and complex environment, traditional pedagogical methods in building construction courses cannot equip students with concrete experience and knowledge. Despite several studies, adapting information and communication technology (ICT) tools…
Construction accidents, injuries, and fatalities have not declined significantly, despite arduous efforts of researchers, safety professionals, and strongly-enforced safety laws. Safety education is crucial in promoting safe and healthy construction work environments; however, current pedagogical methods and tools at the tertiary level do not sufficiently engage students or provide practical…
In the construction process, defects occur inevitably and repeatedly, making significant contributions to cost overruns and time delays. Many studies have focused on quality education to reduce the reoccurrence of defects. So far, most of them have emphasized the necessity of teaching about defects in construction classes without considering how…
Safety education at the tertiary level prepares students to enter construction industry with adequate safety knowledge; then accidents can be prevented proactively. However, safety subject has not been paid adequate attention in universities and most institutional safety programs consider safety matters in isolation. Meanwhile, anatomical theory in the medicine field…
Safety is paramount for construction industry throughout the world. Human errors which contribute to more than half of construction accidents, could be proactively prevented through effective education and training methods. Although Virtual Reality (VR) and Augmented Reality (AR) have gained much attention in various disciplines, few studies applied them for…
The construction industry is a complex environment where high accident rates make significant contributions to cost overruns and time delays. Safety education is important in promoting a safe and healthful working environment in construction; however current pedagogical methods and tools at the tertiary level are unable to provide students with…
VE workshop is performed based on VE expert’experiences without retrieving VE data of similar previous projects. Moreover, it usually omitted or applied for the sake of formality due to insufficiently understanding VE function, limited time, space and budget. Even though many studies have established VE databases for retrieving and reusing…
Construction is a very complicated high risk industry involving more than twenty trades and skilled workers in various construction processes. Accidents, injuries and fatalities occur repeatedly, with incidence rates doubling the industry averages. Safety management and communication are crucial factors with immense influence on construction safety. However, due to the…
Due to the complex working environment, construction site still presents high accident rate, causing serious project delays and cost overruns. Safety education is important in promoting a safe and healthy working environment in construction; however current pedagogical methods and tools at the tertiary level are unable to provide students with…
Construction is one of the largest contributors to national economies and also one of the most accident-prone industries worldwide. Construction site accidents often result in serious injuries or death, cause serious project delays and cost overruns. Prior studies focused on cause and effect relationships of construction accidents, design for construction…
The repeated and inevitable occurrence of defects remains one of the primary causes of project schedule and cost overruns in construction. Currently, quality management on site is done by site managers through their visual senses. However, it is often challenging for a handful of site managers to perform quality management…
Construction is one of the largest contributors to national economies and also one of the most accident-prone industries worldwide. Construction site accidents often result in serious injuries or death, cause serious project delays and cost overruns. Prior studies focused on cause and effect relationships of construction accidents, design for construction…
Construction accidents, injuries and fatalities have not declined significantly, despite arduous efforts of researchers, safety professionals and strongly enforced safety laws. Safety education is crucial in promoting safe and healthy construction work environments; however current pedagogical methods and tools at the university level are unable to provide students with hands-on…
Construction value engineering (VE) is often performed in the form of a short term review of designs, rather than during a regular workshop with a standardized work plan, and its application method is limited. Thus, tasks are performed by applying the method in reverse depending on the VE results, and…
Radio Frequency Identification (RFID) has been applied to the construction industry for improving the efficiency of material and process management. Most RFID-related studies have focused on building or plant construction. The application of RFID has been limited in pipeline construction projects where materials are stored and stacked across a large…
The converted accident rates that included in Pre-Qualification (PQ) are to evaluate the results of accidents which have occurred. Therefore, it is demanded the development of proactive evaluation contents to evaluate the safety management activities and efforts on construction companies. The purpose of this study is to provide basic data…
During the last two decades, designers have been embracing building information modeling (BIM) to improve the quality of the documentation that is produced as well as constructability. While BIM has become an innate feature of the design process within the construction industry, there have been limited investigations that have examined…
With recent rapid advancement of visualization technologies, recognized research work for improving construction safety management practices has been conducted for identifying safety risks as well as worker onsite training. However, most of the previous studies were limited to reflect the site safety management process, which normally consists of planning–education–inspection phases.…
In construction process, defects occur inevitably and repeatedly. It is one of the primary causes of project schedule and cost overruns. Many studies on defect causation analysis and management system have been conducted to facilitate defect measures and rectifications as well as to reduce the reoccurrence of the defect. However,…
Construction accident rates are reflected in the pre-qualification of public construction projects in order to prevent accidents and facilitate the safety management of construction companies. However, the construction industry is still experiencing an increase in accident rates. Hence, there is a need to strengthen existing safety evaluation systems and requirements…
Cost estimation during early stages of construction should be swift and accurate. However, approximate estimation of the costs of bridge construction in Korea is flawed because it is calculated using average construction costs per length or area and do not reflect bridge characteristics. For quick and accurate cost estimates of…
Effective monitoring of worker is one of the crucial elements in accident prevention. With advancement of sensor technologies, real-time tracking research has been conducted for improving effectiveness of monitoring in safety management. However, most of previous studies were limited to outside construction work which normally indicates excavation and heavy equipment…
Construction industry is a very complicated and complex environment that causes high accident rate. The development of advanced virtual world has become an important issue for safety education in order to reduce dangerous occurrence in the construction site. However, most researchers on virtual world still have limitations such as the…
The purpose of this paper is to improve the current lecture-based approach of building construction education with the PBL method by utilizing construction failure information as educational material. In this paper, the failure-based e-learning (FBeL) process is proposed and tested. The difficulties in implementing PBL in building construction education are…
Previous construction failure researches were focused on the utilization plan based on failure information and development of failure classification. However, it has limitation to set up the plan for prevention of construction failure due to the lack of the number of on-site staffs. In order to prevent effectively construction failure,…
In this paper, we propose a construction defect management system using augmented reality (AR) technology that augments virtual objects to input images in real time using a single camera. The proposed method checks construction error using an AR technique that extracts feature points using a marker from three-dimensional scenes projected…
Recent demands from construction industry have emphasized the capability for graduates to have improved skills both technical and non-technical such as problem solving, interpersonal communication. To satisfy these demands, problem-based learning that is an instructional method characterized by the use of real world problem has been adopted and has proven…
The dynamic nature of the construction industry, rapidly changing global market environments, and lowest cost competitive bidding make it difficult to survive in global construction markets. To understand global construction markets and find success factors regarding a firm’s growth, this study was conducted to develop basic data related to establishing…
Recently there has been a trend of hiring more foreign labors in the Korean construction sites after the introduction of the government policy for foreign workers since 2007, called Employment Permit System (EPS). With the trend in the sites, the skilled and unskilled foreign workers would have become a main…
Becoming construction projects larger and more complicated, and utilizing more varied and complex contracting and delivery systems in the industry, integrating information and managing constructability from project inception to completion became the most critical tasks for the successful project management. However, current industry practices of constructability analysis which are too…
In order to encourage construction practitioners to acknowledge failures and disseminate the information, the failure information must be documented and accumulated with a well-structured format, which contains not only the fact and result but also the circumstance and cause of the failure. In the Korean construction industry, many failures are…
The purpose of this paper is to propose a methodology that evaluates safety management information systems (SMIS) for general contractors mainly in terms of managerial effectiveness. Characteristics and variables of safety management assessments were investigated first, and several assessment techniques were then developed. A single index system measuring safety management…
In the case of domestic, related information of expenses in order to draw up cost model at the early stage haven’t been stored systematically; moreover, similar projects which were accomplished in the past time have lacked data about actual results connected itself. Accordingly, a reliable object hasn’t been selected because…
With the electricity industry structure reformation of the government in April, 2001, Korea Power Electric Corporation was divided in to Korea water power nuclear power and 5 thermal power plant. After, various delivery method is introduced and applied for active profit creation according to the competition between each development companies…
In order to improve the performance of succeeding superstore construction projects, it is essential to find out an effective way for applying the opportunities of improvement on their repetitive construction process based upon the analysis of various success or failure cases occurred on previous similar projects. This research study suggests…
It has been recognized that safety management is activated during the construction phase to prevent accidents and fatalities of workers. However, It is revealed that about 15% of fatal death accidents is caused by the lack of management of planning and design phases. There is a crucial need of assessing…
For construction projects, it is required to estimate the Environmental Management Cost (EMC) for pollution prevention, using the calculation standards prescribed in the Construction Technology Management Law (CTML). However, the EMC standards are difficult to utilize without definite site information. Therefore, it is needed a new calculation method reflecting project…
Activity durations retain probabilistic and stochastic natures due to diverse factors causing the delay or acceleration of activity completion. These natures make the final project duration to be a random variable. These factors are the major source of financial risk. Extending the Stochastic Project Scheduling Simulation system (SPSS) developed in…
The construction failures can be decreased by continuously improving the construction process based upon the information of construction failures. Herein, the information of construction failures can be utilized as the key factor far identifying the ineffective process and providing the improved construction process that can prevent failures. The objective of…
The Purpose of cost Planning at the early Phase of construction Projects is to provide the clients with the appropriate cost information during the design decision-making process. Therefore, the cost planning process is expected not only to predict projects’ cost accurately but also closely to coordinate with the design decision-making…
Value Engineering (VE) Workshop executes many tasks with VE team members from various experts of construction field on the basis of VE Job Plan for a short period of time. However, the VE team members are not useful with using VE information until now because it is not systematic in…
The objective of this study is to develope reasonably accurate prediction models to assess hoisting times of tower cranes in the high-rise building construction. The efficient use of the tower crane is critical to achieving the Planned floor cycle time. This research describes the derivation of mathematical models to predict…
Under the current competitive business environment, the complexity of procurement method, and the lack of engineering capacity in the construction engineering industry, a construction engineering firms require the business strategy and its performance measurement system. This study suggests a performance measurement model that could follow’H’construction engineering firm’s vision and strategy.…
Recently, there are growing concerns on the introduction of private financing in railroad station construction project. But private-funded station project does not have the efficient delivery system. This study is focused on the recommended solutions about the private-funded station project management. Through the literature survey and interview, it is investigated…
The procedure of present military facility remodeling has many problems at the stage of evaluating the priorities in various remodeling projects which have been caused from lots of corps. These problems have usually happened not only because of the shortage of the cooperation system in the related divisions but also…
Although Construction Failure Information has been reported in literatures, reports of research, and etc., it Is difficult to utilize the information because the information classification does not exist. Therefore, this study investigated and analyzed literatures of domestic and abroad research Institutions and suggested the Construction Failure Information Classification (CFIC). The…
After the removal of SA (Selective Availability), horizontal accuracy of 25m (2dRMS) is easily obtained using GPS (Global Positioning System). In this paper, the error characteristics without SA are analyzed and a navigation algorithm concerns this error characteristics is proposed to further improve the accuracy. The proposed method utilizes the…
VE (Value Engineering) process and techniques are the systematic managerial tool for value engineers to help conduct VE study effectively. However, There is some difference between VE theory and practice in the domestic construction industry. Specially, function analysis appeared to be poorly recognized and regarded even as unnecessary in construction…
The M&R (Maintenance & Repair) budgeting system for domestic military facilities based incremental budgeting model has caused many problems due to the difference between M&R requirement and budget, so military facility become early deterioration. this study proposes the application method of foreign M&R budgeting model for domestic military facility to…
This study proposes FREES (Fuzzy Risk Evaluation Expert System) for analyzing and evaluating risks occurring during the construction process. The feasibility of this system model was tested by virtual scenario. For the development of the model, at first, risk breakdown structure was established based on risks identified in the existing…
The absence of systematic project procedures in the domestic SOC projects has caused many problems. Therefore, it has been raised the needs for the effective project management of the projects which helps the participants to have systematic procedures at each phase of the SOC projects. The purpose of this research…
Planning and control for safety management executed by the head office is one of the most important parts for improving safety level of construction company. So this study is initiated with the purpose of suggesting an improvement strategy to perform effective and rational safety management at the head office. In…
In order to validate the proposed quantity takeoff method, a case study was performed by applying it to a real elementary school building, built in Korea with similar design conditions in 1997. The estimated quantity using the proposed method and the quantity at design completion were compared. On average, only…