Development of workspace conflict visualization system using 4D object of work schedule

HyounSeok, Moon; Dawood, Nashwan; Kang, Leen-Seok

doi:10.1016/j.aei.2013.12.001

Cited by 116 publications

(45 citation statements)

References 22 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Chau et al [28] broadened the use of 4D model to include site utilization management over the course of construction. While traditional clash detection can only detect clashes between building systems with considering the dynamic change of the construction site, Moon et al [29] developed an algorithm to generate workspaces and automatically check workspace conflicts with a 4D simulator. Moreover, 4D-based BIM approach is viable for safety check and planning [30,31].…”

Section: Building Information Modeling (Bim)mentioning

confidence: 99%

Integration of Building Information Modeling and Critical Path Method Schedules to Simulate the Impact of Temperature and Humidity at the Project Level

Shan

Goodrum

2014

Buildings

View full text Add to dashboard Cite

Steel construction activities are often undertaken in an environment with limited climate control. Both hot and cold temperatures can physically and psychologically affect construction workers, thus decreasing their productivity. Temperature and humidity are two factors that constantly exert forces on workers and influence their performance and efficiency. Previous studies have established a relationship between labor productivity and temperature and humidity. This research is built on the existing body of knowledge and develops a framework of integrating building information modeling (BIM) with a lower level critical path method (CPM) schedule to simulate the overall impact of temperature and humidity on a healthcare facility's structural steel installation project in terms of total man hours required to build the project. This research effort utilized historical weather data of four cities across the U.S., with each city having workable seasons year-round and conducted a baseline assessment to test if various project starting dates and locations could significantly impact the project's schedule performance. It was found that both varied project start dates and locations can significantly contribute to the difference in the man hours required to build the model project and that the project start date and location can have an interaction effect. This study contributes to the overall body of knowledge by providing a framework that can help practitioners better understand the overall impact of a productivity influencing factor at a project level, in order to facilitate better decision making. OPEN ACCESSBuildings 2014, 4 296 Keywords: building information modeling; temperature; humidity; productivity; CPM schedule; structural steel; simulation Introduction and BackgroundConstruction labor productivity is affected by many factors, and weather is one of them; almost 50% of the construction activities are affected by weather [1], including steel construction activities. Both hot and cold temperatures beyond craft workers' comfort may influence them both psychologically and physiologically and result in productivity losses. As a result of prolonged exposure to freezing or subfreezing working conditions, workers may suffer from health problems such as frostbite, trench foot, and hypothermia [2]. In addition, prolonged exposure to hot working environments may result in psychological effects such as lethargy, irritability, and restlessness, and physiological effects, such as heat stroke, heat cramps, and heat exhaustion, may occur [3]. Occupational Safety and Health Administration(OSHA) sets forth tips regarding how to protect workers from possible health threats because of the cold or heat. One of the common considerations to combat cold and heat is to include more break time into work cycles. Consequently, as craft workers' tool time (i.e., the time spent on actual work) decreases, productivity decreases accordingly.Among the climatic factors, temperature and humidity are two of the most critical factors [4] that influe...

show abstract

Section: Building Information Modeling (Bim)mentioning

confidence: 99%

Integration of Building Information Modeling and Critical Path Method Schedules to Simulate the Impact of Temperature and Humidity at the Project Level

Shan

Goodrum

2014

Buildings

View full text Add to dashboard Cite

show abstract

“…Predicting the 3D shapes within an assumed time interval to check clashes is commonly used in current studies [19,20]. Taking the east-north plane as an example, the identification of two circles that are to overlap is displayed in Figure 4.…”

Section: Unsafe Proximity Query Rulesmentioning

confidence: 99%

An Integrated INS-GPS-Raspberry Pi System Using the Time-Sphere Model for Real-Time Identification of Struck-by-Equipment Hazard

Wang¹,

Du²,

Razavi³

2016

Proceedings of the International Symposium on Automation and Robotics in Construction (IAARC)

View full text Add to dashboard Cite

Struck-by-equipment hazard, i.e, contact collision between worker-on-foot and construction equipment or between equipment and equipment, is a major cause of injuries and fatalities in construction. A variety of smart technologies and systems have been developed and utilized to alleviate the risks of this type of hazard. However, most of the existing technologies and systems perform with a high rate of false alarms which have critically impeded their implementations on real construction sites. Therefore, a system performing more accurately and in real-time needs to be developed to enhance construction safety. In this context, a real-time system integrating with the 4D Time-Sphere model is developed to timely identify and alarm struck-byequipment hazards with reduced false alarms. This system is comprised of Global Positioning System (GPS), Inertial Navigation System (INS), Raspberry Pi micro-processor and the developed Time-Sphere model. Corresponding actuation will be triggered if an unsafe situation is identified, i.e., struck-byequipment hazard(s) are or to be presented. A controlled field experiment was conducted to evaluate the feasibility of the integrated system and the effectiveness of the Time-Sphere model in reducing false alarms. The obtained results show that average 53% of the alarms generated by the prevalent method can be reduced by the TimeSphere model. All of the reduced alarms are false positives. The average false positive rate of the prevalent method is 29%. Moreover, it is demonstrated that the developed system is feasible and effective in identifying struck-by-equipment hazards in real time and potentially enhancing construction safety.

show abstract

“…Based on the reflection of laser pulses and their return time, size and location of objects scanned can be determined by knowing the speed of light [7]. Laser scanning is beneficial in remote monitoring of construction sites [11] [17]. Some limitations were noted in past studies, including limited capability in integrating with other management applications [16], difficulty in generalizing its usage to projects of different types [18] [14], and complexity involved in representing larger numbers of space constraints [19].…”

Section: Photo-modelingmentioning

confidence: 99%

State of Art on Site Space Modeling in Construction Projects

Gore¹,

Saeedfar²,

Song³

2016

Proceedings of the International Symposium on Automation and Robotics in Construction (IAARC)

View full text Add to dashboard Cite

-Limited space availability is a common issue faced by construction projects and it has great impact on project productivity and safety performance. Effective management of space is challenging due to the highly dynamic and complex nature of construction site environment. Among them is space modeling, i.e. how to capture and visualize the time-phased site space that is constantly evolving. This paper reviews the state-of-art in space modeling studies in thirty publications. These studies are comparatively evaluated based on their methodology, technology basis, applications, maturity, and implementation. Manual processes and techniques have been traditionally used to document as-built site conditions. New space modeling has evolved from this manual, subjective, and 2D format to a more accurate, automated, and integrated approach using technologies, such as photo-modeling, 3D laser scanning, point cloud modeling, and building information modeling. This review provides a better understanding of major shifts of technologies and applications in space modeling research, meanwhile identifies promising areas for future research. Keywords -Construction site, space modeling, state of the art, literature review.

show abstract

Development of workspace conflict visualization system using 4D object of work schedule

Cited by 116 publications

References 22 publications

Integration of Building Information Modeling and Critical Path Method Schedules to Simulate the Impact of Temperature and Humidity at the Project Level

Integration of Building Information Modeling and Critical Path Method Schedules to Simulate the Impact of Temperature and Humidity at the Project Level

An Integrated INS-GPS-Raspberry Pi System Using the Time-Sphere Model for Real-Time Identification of Struck-by-Equipment Hazard

State of Art on Site Space Modeling in Construction Projects

Contact Info

Product

Resources

About