A Construction Workflow Model for Analyzing the Impact of In-Project Variability

Garcia-Lopez, Nelly P.; Fischer, Martin

doi:10.1061/9780784479827.199

Cited by 11 publications

(5 citation statements)

References 5 publications

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“…Based on this, the construction process is an emergent property of a system whose components are subjected to non-linear and unexpected interactions that cannot always be anticipated [33]. This trend has been confirmed by [6], who formalized a model representing construction workflow variability.…”

Section: Holonic Construction Managementmentioning

confidence: 82%

“…Examples of unpredictable events affecting the construction process are bad weather conditions, work site accidents, supply chain delays, and productivity rates variation [3,4]. This implies flow variability that negatively impacts project performance and productivity [6,7], and requires frequent and demanding updates of the construction schedule [3]. Among common attitudes, it is worth mentioning that methodologies and tools conceived for general project management are very often used to support site management [3].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

A Holonic Construction Management System for the Efficient Implementation of Building Energy Renovation Actions

Messi,

Carbonari,

Franco

et al. 2024

Sustainability

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In the architecture, engineering and construction (AEC) industry, many efforts have provided remarkable contributions to construction planning and control processes during work execution. Nevertheless, frequent coordination issues among stakeholders and difficulties in dealing with unexpected events can be explained by the complexity featuring the construction sector. Several approaches to deal with this issue were investigated in the manufacturing area, among which this paper looks at the holonic approach as one of the most promising strategies. This study first analyzes the more fragmented and dynamic nature of the construction industry as compared with the manufacturing one. Secondly, it suggests developing a process-based holonic construction management system based on building information modeling (BIM) and a conceptual architecture for manufacturing control called Product Resource Order Staff Architecture (PROSA). The process-based paradigm ensures exploiting the benefits of BIM towards the development of sustainable and efficient regeneration methods of the built environment. Subsequently, a first management system prototype was developed and tested for the purpose of renovation works management. For the first time, results from an actual implementation of PROSA were applied to a real construction site, and its feasibility was assessed using the data on the field. Key performance indicators (KPIs) evaluated during the onsite demonstration confirmed a good performance of PROSA and the presented holonic approach, which contributed to the overall success of the energy efficient refurbishment project.

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Section: Holonic Construction Managementmentioning

confidence: 82%

Section: Introductionmentioning

confidence: 99%

A Holonic Construction Management System for the Efficient Implementation of Building Energy Renovation Actions

Messi,

Carbonari,

Franco

et al. 2024

Sustainability

View full text Add to dashboard Cite

show abstract

“…In addition, PPM focuses on reducing workflow variability, which can be defined as a lag in the quality and quantity of flows (information, materials, labor, equipment, workspace) required to perform a sequence of constructive activities [56,57]. The principles of PPM and Lean Construction-an adaptation of the Lean philosophy introduced by Lauri Koskela in 1992 [58]-share the same origin in Operations Science [35].…”

Section: Project Production Management (Ppm)mentioning

confidence: 99%

Virtual Design and Construction (VDC) Framework: A Current Review, Update and Discussion

et al. 2022

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Compared with other industries, construction has maintained one of the lowest growth rates in productivity and innovation over the last decades. Moreover, low compliance with schedule targets has remained a common issue throughout projects. Therefore, although methodologies developed have benefited productivity in design, construction and operation, meeting client and project objectives becomes challenging without properly integrating organization, information, systems and processes. This perspective introduces the Virtual Design and Construction (VDC) framework. First, this paper studies and reviews VDC since its creation at the Center for Integrated Facility Engineering (CIFE) of Stanford University in 2001. After that, a comprehensive bibliographical review of the VDC framework is presented and updated with examples of its application in construction projects, delving into its elements: Client Objectives, Project Objectives, Production Objectives, Controllable Factors, Integrated Concurrent Engineering (ICE), Building Information Modeling (BIM) and Project Production Management (PPM). Finally, the main benefits and project outcomes when applying the VDC framework are presented and discussed, followed by the conclusions and recommendations for future research.

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“…The template helps the modeler spend less time on assessing different outputs involved in workflow analysis. Garcia-Lopez and Fischer (2016) concluded This is a pre-published version , "Accounting for Variability: Identifying Critical Activities as a Supplement to the Critical Path", Journal of Construction Engineering and Management, vol. 148, no.…”

Section: Variability In Constructionmentioning

confidence: 99%

Accounting for Variability: Identifying Critical Activities as a Supplement to the Critical Path

Salhab

Møller

Lindhard

et al. 2022

J. Constr. Eng. Manage.

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Successful realization of construction activities requires simultaneous integration of various resource input flows, giving rise to considerable sources of flow variability. Such variability might manifest as schedule variations which jeopardize the project performance, especially when using deterministic scheduling. Current scheduling techniques fail to efficiently tackle variability and rely on deterministic approaches. Therefore, this study fills the gap by developing a Discrete Event Simulation model, where activity durations are modeled using beta distributions and Program Evaluation and Review Technique assumptions. By applying the Spearman correlation coefficient, activities with higher influence on the schedule are identified, highlighting where to reduce variability. An application example was conducted involving a Critical Path Method (CPM) network containing eleven activities. Two types of waste emerging due to variability are identified as waiting time and variation gaps. Out of the eleven activities in the example network, two sets of critical activities are identified. Results reveal that an 80% reduction in variability in these critical activities leads to a 51.9% increase in likelihood of completing the project on schedule, 30% decrease in waiting time, and 28.6% decrease in variation gap. An important implication of this research is that near critical paths could become critical based on the amount of variability contained in the activities lying on each path. Acquiring such information early on during planning provides proactive, eye-opening insights into potential problematic scheduling areas. The study's contribution includes investigating the variability effect on two types of waste in production and providing project planners with a stochastic approach to manage the hidden waste in production systems; This is a pre-published version

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A Construction Workflow Model for Analyzing the Impact of In-Project Variability

Cited by 11 publications

References 5 publications

A Holonic Construction Management System for the Efficient Implementation of Building Energy Renovation Actions

A Holonic Construction Management System for the Efficient Implementation of Building Energy Renovation Actions

Virtual Design and Construction (VDC) Framework: A Current Review, Update and Discussion

Accounting for Variability: Identifying Critical Activities as a Supplement to the Critical Path

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