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Related Concept Videos

Survey Safety01:28

Survey Safety

80
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...
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Design Consideration01:22

Design Consideration

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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.
The factor of safety is another key...
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Workability of Concrete01:25

Workability of Concrete

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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.
Concrete's workability is determined by its resistance to internal forces that arise...
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Factors Affecting Workability01:24

Factors Affecting Workability

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The workability of concrete is a critical characteristic that influences the ease of mixing, handling, and finishing the concrete. It is affected by several factors including water content, aggregate properties, and admixtures like air entrainment. Water plays a fundamental role as it lubricates the concrete mix, facilitating easier movement and placement. However, the water requirement varies depending on the texture and shape of aggregates. Finer particles and angular, rough-textured...
107
Design Example: Managing Concrete Workability01:14

Design Example: Managing Concrete Workability

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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.
116
Design Example: Sustainability in Concrete Building01:26

Design Example: Sustainability in Concrete Building

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As the construction industry moves towards more eco-friendly practices, concrete's adaptability and its ability to incorporate sustainable features make it a key material in the drive towards greener building solutions.
There are multiple approaches to achieve sustainability in a commercial concrete building. For instance, construct a concrete parking area under the building, utilizing pervious concrete paver blocks in open areas to facilitate rainwater collection through an underground...
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How employees' lean construction competence affects construction safety performance.

Min Gao1, Xiuyu Wu1, Yanqing Fang1

  • 1Department of Management Science and Engineering, Tianjin University of Finance and Economics, China.

International Journal of Occupational Safety and Ergonomics : JOSE
|August 15, 2022
PubMed
Summary
This summary is machine-generated.

Employee competence in lean construction (LC) impacts safety performance (SP). Cognitive and social LC skills positively influence SP, especially through organizational LC competence, guiding better safety practices.

Keywords:
competenceconstruction safety performancelean construction

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Area of Science:

  • Construction Management
  • Organizational Behavior
  • Occupational Safety and Health

Background:

  • Lean Construction (LC) principles aim to optimize efficiency and reduce waste in building projects.
  • Understanding the nuanced relationship between employee competencies and construction safety performance (SP) is crucial for effective project management.
  • Organizational LC competence can mediate the impact of individual employee skills on overall project outcomes.

Purpose of the Study:

  • To empirically investigate how sub-dimensions of employee Lean Construction (LC) competence influence construction safety performance (SP).
  • To examine the mediating role of organizational LC competence in the relationship between employee LC competence and SP.
  • To provide theoretical and practical insights for enhancing construction safety through LC practices.

Main Methods:

  • Quantitative analysis of data collected from 710 employees across 300 construction projects.
  • Validation of a hypothesis model using multiple regression analysis.
  • Empirical testing of direct and indirect effects of employee LC competence sub-dimensions on SP.

Main Results:

  • Employees' cognitive competence positively impacts SP directly and indirectly through organizational LC competence.
  • Employees' social competence has a direct negative effect but an indirect positive effect on SP via organizational LC competence.
  • Employees' continuous improvement competence shows no direct effect on SP but a positive indirect effect through organizational LC competence.

Conclusions:

  • Employee cognitive and social competencies are key drivers of construction safety performance, with organizational LC competence playing a vital mediating role.
  • While direct effects vary, fostering organizational LC competence can enhance the positive influence of various employee skills on safety.
  • The study contributes to Lean Construction management theory and offers practical guidance for improving construction SP.