The Relative Factors Shaping Construction Workers' Behaviors and Leading to Accidents

Most construction workers’ behaviors are shaped by task objective constraints and their capability during the operation. This research describes the construction workers’ behaviors are an interaction between the task demand and the worker capability. The relative factors that influence construction workers’ behaviors have been determined through the Delphi process and Analytical Hierarchical Process (AHP). The panel participated in these processes was represented by 9 safety experts who were specialized in high-rise building construction. Results of the analysis showed that 23 task demand factors and 12 worker capability factors were determined by 2 rounds of the Delphi process under the expert’s consensus. The weights of these factors were determined by utilizing the AHP. The most weighted factor of the task demand was the Societal and Environmental Impact Awareness Factor. The Foreman’s Communication Ability Factor was the dominant weighted factor of the capability. The factors and their relative weights can guide practitioners to manage the project resources safely and efficiently

Incentive Contracts for Road Construction to Reduce Greenhouse Gas Emissions

Road constructions play a significant role in greenhouse gas (GHG) release into the atmosphere due to a large amount of materials consumption. To reduce emission has an effect on project costs. This research proposes an incentive measure named the Construction-Emission-Punishment (CEP) bidding method which offers emission reduction options and incentives for participating bidders. An equivalent bid price and a financial penalty will be specified in the construction contract as a part of this method. This penalty is applied when there is a failure to comply with binding obligations. The results show that the rates of the emission deduction from the six reduction options account for 0.115%-2.768% of the project cost. The case study also shows that a bidder who receives some emission deductions can be the winner. The effectiveness of the CEP method depends on the bid price gaps among the bidders and the emission deduction from the selected options

Non-linear modelling of construction workers’ behaviors for accident prediction

The cognitive engineering principle suggests that the unsafe behaviors of construction workers are associated with numerous attributes, and 23 task demands and 12 capability attributes have been proposed in the construction worker’s behavior model (CWBM). Two models utilizing Logistic Regression (LR) and Artificial Neural Networks (ANN) were developed as accident prediction models, and the forecasting efficiencies of these two models were investigated. Robustness of these models was proven by verification. The results provide a basis for designing an in-depth study on the cognitive attributes influencing workers’ behaviors and expanding the choice of analysis techniques

Integrating Building Information Modeling and Health and Safety for Onsite Construction

Background: Health and safety (H&S) on a construction site can either make or break a contractor, if not properly managed. The usage of Building Information Modeling (BIM) for H&S on construction execution has the potential to augment practitioner understanding of their sites, and by so doing reduce the probability of accidents. This research explores BIM usage within the construction industry in relation to H&S communication. Methods: In addition to an extensive literature review, a questionnaire survey was conducted to gather information on the embedment of H&S planning with the BIM environment for site practitioners. Results: The analysis of responses indicated that BIM will enhance the current approach of H&S planning for construction site personnel. Conclusion: From the survey, toolbox talk will have to be integrated with the BIM environment, because it is the predominantly used procedure for enhancing H&S issues within construction sites. The advantage is that personnel can visually understand H&S issues as work progresses during the toolbox talk onsite

THE IMPACT OF CONSIDERATION OF PAYMENT CONDITIONS IN CASH FLOW FORECASTING ON FINANCING COSTS IN CONSTRUCTION

The Thirteenth East Asia-Pacific Conference on Structural Engineering and Construction (EASEC-13), September 11-13, 2013, Sapporo, Japan

CUTTING PATTERN GENERATION FOR REINFORCEMENT BARS USING INTENSIVE SEARCH ALGORITHM

The Thirteenth East Asia-Pacific Conference on Structural Engineering and Construction (EASEC-13), September 11-13, 2013, Sapporo, Japan