Related Experiment Video
Updated: Apr 12, 2026
08:27
Author Spotlight: Efficient Image Recognition Using Directional Gradient Histogram Technique and Support Vector Machines
Published on: January 5, 2024
1.8K
Pattern extraction for high-risk accidents in the construction industry: a data-mining approach
Mehran Amiri1, Abdollah Ardeshir1, Mohammad Hossein Fazel Zarandi2
1a Civil and Environmental Engineering Department , Amirkabir University of Technology , Tehran , Iran.
Summary
Construction accidents, including falls and falling objects, were analyzed. Findings reveal key accident factors like time, location, and affected body parts, with higher risks during evening/night shifts and weekends for severe incidents.
Area of Science:
- Occupational Safety and Health
- Construction Industry Safety
- Accident Analysis and Prevention
Background:
- Falls and falling objects are frequent construction accidents (Group I).
- Vehicle collisions, electrocution, excavation collapses, fires, and explosions are less frequent but severe (Group II).
- Understanding accident patterns is crucial for improving safety in the construction sector.
Purpose of the Study:
- To analyze a comprehensive database of construction accidents in Iran (2007-2011).
- To identify significant correlations between accident characteristics and outcomes.
- To provide data-driven insights for enhancing construction safety protocols.
Main Methods:
- Utilized multiple correspondence analysis, decision tree, ensembles of decision trees, and association rules.
- Analyzed a national database of construction accidents spanning five years.
- Investigated relationships between accident variables such as time, location, body part affected, and consequences.
Main Results:
- Group I: Significant links found between accident time, location, affected body part, consequence, and lost workdays.
- Group I: Night shifts showed fewer accidents; head, back, spine, and limb injuries were more frequent.
- Group II: Accident time and body part affected were strongly related; married, older workers had higher accident frequency, especially during evening/night shifts and weekends.
Conclusions:
- The study identified critical factors contributing to both frequent (falls) and severe (vehicle, fire) construction accidents.
- Results align with previous research, reinforcing the importance of shift timing, worker demographics, and accident circumstances.
- Findings can inform targeted safety interventions to reduce accident rates and severity in the construction industry.
Related Concept Videos
01:28Survey Safety
489
Surveying near highways, rough terrain, or power lines involves significant risks. Working along highways is particularly dangerous and requires the use of warning signs and flagmen. It is safest to avoid working directly on roads and use offsets whenever possible. When highway work is unavoidable, it must follow all safety guidelines. Surveyors should wear bright clothing, such as orange reflective vests, to ensure visibility to motorists, coworkers, and hunters. In construction zones, wearing...
489
01:11Hazard Rate
514
The hazard rate, also known as the hazard function or failure rate, is a statistical measure used to describe the instantaneous rate at which an event occurs, given that the event has not yet happened. From a probabilistic perspective, it represents the likelihood that a subject will experience the event in a very small time interval, conditional on surviving up to the beginning of that interval. In terms of frequency, the hazard rate can be viewed as the ratio of the number of events to the...
514
01:15Quarrying of Stone
770
Quarrying is the process of extracting stone from a quarry, where specialized techniques are employed to remove large blocks of stone safely and efficiently. This process can involve controlled explosions or more precision-oriented methods such as cutting and drilling.
One common method involves using a diamond belt saw to cut large blocks from the quarry face. These blocks can be about 50 feet long and 12 feet high. After the initial vertical cut, drilling is performed at the base of the...
One common method involves using a diamond belt saw to cut large blocks from the quarry face. These blocks can be about 50 feet long and 12 feet high. After the initial vertical cut, drilling is performed at the base of the...
770
01:18Errors in Taping
470
Errors in taping arise from multiple factors that can significantly impact measurement accuracy in surveying. Misalignment of the tape, often due to human error, is one primary source. A skilled rear tapeman, using a telescope, can help correct alignment by guiding the head tapeman; however, human limitations still lead to small inaccuracies. These errors may include misplacement of pins or inaccurate tape readings due to common visual confusions, such as mistaking a six for a nine. Such...
470
01:21Types of Reports II: Incident or Occurrence Report
1.4K
An Incident or Occurrence Report in a healthcare setting is a crucial document used to record any unexpected occurrence that may or may not have affected a patient, employee, or visitor. Such reports are critical to improving patient safety and include all details leading up to and including the event.
Purposes:
In the healthcare industry, reports play a crucial role in documenting incidents within an agency. The primary objective of these reports is to ensure patient safety, uphold the...
Purposes:
In the healthcare industry, reports play a crucial role in documenting incidents within an agency. The primary objective of these reports is to ensure patient safety, uphold the...
1.4K
01:29Preplaced Aggregate Concrete
474
Preplaced aggregate concrete is ideal for construction environments that are not easily accessible. The process begins by properly wetting the gap-graded coarse aggregates to remove the dirt, then placing it in the form and compacting it. Voids are filled with a mortar mix pumped under pressure through slotted pipes. This mortar typically consists of Portland cement, pozzolan, fine aggregates, water, and a fluidizing aid. The pozzolan helps reduce bleeding and segregation while improving the...
474