Predicting Construction Crew Productivity for Concrete-Pouring Operations
Publication: Journal of Legal Affairs and Dispute Resolution in Engineering and Construction
Volume 16, Issue 2
Abstract
In the construction industry, laborers generally work in a crew, and if they perform poorly, it significantly impacts on overall construction productivity. The construction crew productivity (CCP) is prone to different factors, some of which are within the engineer’s control and others are not. Due to this, it is an arduous and challenging task to establish productivity claims based on the CCP. Therefore, this study aims to evaluate CCP and, based on it, signify and defend the loss of productivity claims. To evaluate CCP, a feed-forward back-propagation artificial neural network (ANN) approach is utilized. A total of 14 factors influencing the CCP are considered inputs, while CCP is considered output in the ANN model. Further, an explicit expression is derived from the final weights and biases of the trained ANN. The performance of the model is checked by statistical parameters such as mean square error (MSE), root mean square error (RMSE), average absolute deviation (AAD), square of correlation coefficient (), and coefficient of variation (COV). Then, to implement for practical purposes, the proposed ANN model is deployed on a project in India and found satisfactory performance. Further, the sensitivity analysis extracts the influence rate of each factor on the CCP and finds the top three significant factors: crew size, working hours, and temperature. Thus, the proposed study helps to estimate and provide caveats in the context of claims when there are losses through CCP. Herein, the presented methodology is applied to the concrete-pouring operation of reinforced concrete (RC) columns. However, it can be extended to other RC structural members like slabs, beams, foundations, etc.
Practical Applications
A construction project is often a challenging and dynamic process, which includes many specially made procedures and aspects. Out of these aspects, construction crew productivity (CCP) is one of the critical and uncertain, as it can comprise the overall cost of the project. Therefore, alteration in the CCP can impact the cost and time of the project. These alterations can result from multiple influence factors. In 2004, the American Association of Cost Engineering (AACE) has reported various factors that can influence CCP. Further, the report also stated that some of the influencing factors can be anticipated and covered in the contract documents, while others are beyond contractors’ control. For this, the contractors might need to seek the claims of the resources, time, and cost due to the loss of CCP. Therefore, contractors must establish both entitlement and a causal connection between the claimed disruption and declined CCP in order to recover the losses due to disruptions beyond their control. Hence, this study provides a base for predicting the CCP and then effectively identifies the factors that contribute to declining CCP. Based on this information, contractors can substantially simplify the documentation of claims for productivity losses that may occur throughout a project.
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Data Availability Statement
Some data, models, and codes that support the findings of this study are available from the corresponding author upon reasonable request. The item list includes (1) CCP evaluation and (2) neural network coding in MATLAB.
Acknowledgments
The authors acknowledge the support of the engineers of the selected construction site who contributed in estimating the CCP and sharing relevant data.
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© 2024 American Society of Civil Engineers.
History
Received: Apr 14, 2023
Accepted: Oct 26, 2023
Published online: Jan 5, 2024
Published in print: May 1, 2024
Discussion open until: Jun 5, 2024
ASCE Technical Topics:
- Artificial intelligence and machine learning
- Business management
- Claims
- Columns
- Computer programming
- Computing in civil engineering
- Concrete
- Concrete columns
- Concrete construction
- Concrete pipes
- Construction (by type)
- Construction engineering
- Dispute resolution
- Engineering fundamentals
- Engineering materials (by type)
- Errors (statistics)
- Infrastructure
- Legal affairs
- Litigation
- Materials engineering
- Mathematics
- Neural networks
- Personnel management
- Pipeline systems
- Pipes
- Practice and Profession
- Productivity
- Reinforced concrete
- Statistics
- Structural engineering
- Structural members
- Structural systems
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