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Related Concept Videos

Survey Safety01:28

Survey Safety

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...
Aggregate Cement Ratio01:21

Aggregate Cement Ratio

The Aggregate Cement ratio refers to the weight of aggregate divided by the weight of cement in a concrete mix. Altering this ratio has profound effects on the concrete's properties. This ratio plays a pivotal role in determining the strength, workability, and durability of concrete. When the Aggregate Cement ratio is higher, the mix is leaner, meaning it has less cement paste to lubricate the aggregate, potentially making the concrete less workable. Such mixes, known as lean, enhance the...
Design Consideration01:22

Design Consideration

Designing a structure involves a series of considerations, primarily the material's ultimate strength, calculated through tests that measure changes under increased force until the material reaches its breaking point or limit. The ultimate load, where the material breaks, is divided by its original cross-sectional area, resulting in the ultimate normal stress or strength. The ultimate shearing stress is another significant factor taken into account.
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Workability of Concrete01:25

Workability of Concrete

The workability of concrete is a crucial property that affects its handling, placing, and finishing during construction. It describes the ease with which concrete can be mixed, placed, compacted, and finished. Workability is primarily concerned with the concrete's movement and its ability to resist internal friction and external resistance from molds and reinforcements during the application process.
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Design Example: Managing Concrete Workability01:14

Design Example: Managing Concrete Workability

This example deals with managing the workability of concrete for a raft foundation project under hot weather conditions. Workability is crucial for ensuring the concrete is easy to place, compact, and finish. In this scenario, a slump test — a common method to measure the workability of fresh concrete — initially indicated low workability. This was attributed to the rapid water loss from the concrete mix, exacerbated by the high temperatures causing the course aggregates to heat up.
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Halo Effect

The halo effect is a cognitive bias in which an individual's overall impression influences judgments about their specific traits. This psychological phenomenon leads people to associate positive characteristics with those they perceive as generally good and negative characteristics with those they view as bad. This effect is particularly influential in social perception, professional evaluations, and decision-making processes.The Psychological Basis of the Halo EffectThe halo effect is rooted...

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Applicability Analysis of Assessment Methods for Morphological Parameters of Corroded Steel Bars
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Published on: November 1, 2018

Correlation between safety climate and contractor safety assessment programs in construction.

Emily H Sparer1, Lauren A Murphy, Kathryn M Taylor

  • 1Department of Environmental Health, Harvard School of Public Health, Boston, Massachusetts.

American Journal of Industrial Medicine
|September 17, 2013
PubMed
Summary

Contractor safety assessment programs (CSAPs) do not appear to reflect safety climate in construction. This study found no significant link between CSAP scores and worker perceptions of safety, suggesting current measures may miss crucial safety climate aspects.

Keywords:
constructioncontractor safety assessmentprequalifying assessmentsafety climate

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Area of Science:

  • Occupational Health and Safety
  • Construction Management
  • Industrial Psychology

Background:

  • Contractor safety assessment programs (CSAPs) integrate multiple data sources to measure construction safety performance.
  • The relationship between CSAP safety performance measures and safety climate in the construction industry remains unexplored.

Purpose of the Study:

  • To investigate the association between contractor safety assessment program scores and safety climate perceptions among construction workers.
  • To determine if safety performance metrics align with subjective safety climate assessments in construction.

Main Methods:

  • Surveys assessing safety climate were administered to 401 construction workers and 11 safety managers across 68 companies.
  • Companies were categorized as high or low scorers based on ConstructSecure CSAP scores.
  • Spearman rank correlations analyzed the relationship between CSAP scores and safety climate scores at individual and group levels.

Main Results:

  • No statistically significant differences in safety climate scores were found between workers in high and low CSAP groups.
  • Weak correlations were observed between worker safety climate scores and company CSAP scores, with limited statistical significance.
  • Manager-assessed safety climate scores did not significantly differ from worker-assessed scores.

Conclusions:

  • CSAP safety performance scores do not appear to effectively capture the safety climate within the construction industry.
  • The complexity of construction safety climate may present challenges for accurate measurement using current assessment tools.
  • Further research is needed to understand and measure safety climate effectively in construction settings.