Work Structuring for Flow

Garcia-Lopez, Nelly P.; Fischer, Martin; Alarcón, Luís F.

doi:10.24928/2019/0140

Cited by 4 publications

(3 citation statements)

References 10 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In a construction project, Bertelsen et al (2007) asserted production flow is optimised when all flows required to complete a task are present at the right time and in the correct amounts for efficient task execution. In addition, Garcia-Lopez et al (2019) suggest there are two work structuring methodologies: LPS, which has been advanced by other Lean construction researchers (Ballard et al, 2001;Hamzeh et al, 2008), and Takt planning (Frandson et al, 2013;Tommelein, 2017). According to Tsao et al (2004), LPS work structuring methodology focuses on activity definition, sequencing, and assignment: breaking down work into units that can be assigned to specialists (activity definition).…”

Section: Work Structuringmentioning

confidence: 99%

An Evaluation of the Lookahead Planning Function in Last Planner® System

Power¹,

Sinnott²,

Lynch³

et al. 2023

Proceedings of the 31st Annual Conference of the International Group for Lean Construction (IGLC31)

View full text Add to dashboard Cite

Last Planner ® System (LPS) has been lauded as a critical improvement methodology for project execution. Best results accrue when all functions are utilised. However, in practice, due to lack of knowledge and appreciation of the LPS cycle and complementary interactions required, teams are not achieving optimal outcomes. Effective Lookahead planning that reduces variation and 'making-do' are primary concepts for facilitating better construction task execution.This study goes 'back to basics' and explores how improved Lookahead planning can enhance project delivery. It utilised a mixed-methods approach with case study design, encompassing interviews, project documentation, and existing research data. The case project utilised Visual Management, Takt concepts, Scrum, and Flow Walks to engage site supervisors proactively and collaboratively in diligent Lookahead planning.Findings demonstrate involvement of the trades persons in task breakdown and design of the operation ensured better activity and trade flow resulting in improved task execution. Proactive and diligent constraint screening and flow walks resulted in increased constraint identification and better on-time resolution, while also developing a workable backlog. Conducting a First-Run Study resulted in immediate productivity improvement.The basics of production planning and control are an essential component of Lean Project Delivery. The research highlights the value in practitioners exploring original literature in more depth to gain better knowledge and skills of the Lookahead planning function.

show abstract

Section: Work Structuringmentioning

confidence: 99%

An Evaluation of the Lookahead Planning Function in Last Planner® System

Power¹,

Sinnott²,

Lynch³

et al. 2023

Proceedings of the 31st Annual Conference of the International Group for Lean Construction (IGLC31)

View full text Add to dashboard Cite

show abstract

“…Tommelein [8] indicates that the design of zones in the workspace to enhance lean workflow with takt time planning needs to take into account different trades, as different trades needs different workspace patterns. Garcia-Lopez et alii [16] presented a work structuring method that allows field managers to explicitly represent construction activities, flows and flow movement through the project, the Activity-Flow Model (AFM). In summary, apparently due to its significance there are continuous interests around construction scheduling amongst academic scholars and industry experts.…”

Section: Point Of Departurementioning

confidence: 99%

Workflow Optimization with Construction Scheduling under a Lean Perspective

Bragadin¹,

Kähkönen²

2020

Proceedings of the Creative Construction E-Conference 2020

View full text Add to dashboard Cite

Construction scheduling produces the most important construction documents as they disclose the total project duration, project stages and times of work packages, activity costs per time period, logical sequence of activities and corresponding consequences for quality and safety. The production model displayed by the schedule should address Lean principles of production, mainly the reduction of waste created by idle time of crews due to a non-optimized workflow and takt-time planning. In a Lean Construction perspective, the project schedule should address the workflow of activities and of construction crews through the workspaces of the building. Location-Based Management System (LBMS) is a recent and innovative method that aims at planning and managing construction projects in a process-oriented way. This approach is based upon the Location Breakdown Structure (LBS), a hierarchical categorization of the workspaces where construction activities are performed by trades. As different trades need different types of workspaces, the LBS should be trade and time dependent. In an ongoing research an improved scheduling method for construction operations has been developed, based on a CPM-Precedence Network plotted on a Resource-Space chart. Space Units of the project work are identified by a Location Breakdown Structure (LBS), and project activities are identified by two dimensions coordinate system based on Resources (i.e. construction crews) and working spaces (e.g. floors of a multi-storey building). Therefore the network model can be structured understanding resource and space constraints. Space Units can be modified in different stages of the execution according to trade-specific requirements, therefore creating a time-dependent LBS, and resource-based activity plotting can enhance workflow modeling through locations. Takt time of workflow in each space unit can be easily detected and optimized through balancing the duration of the sequenced activities of the space unit. The aim of the proposed approach is to increase the quality of the produced schedule by addressing Lean principles concerning work-flow optimization and takt-time detection and planning. The scheduling approach has been tested on a sample project.

show abstract

“…Emphasizing the importance of the process results in improved reliability and decreases the likelihood that delays on one task will delay the entire project (Bertelsen et al, 2007). Flow methods also 1 Undergraduate Student, Civil and Construction Engineering Department, Brigham Young University, contrast activity-based methods for scheduling because they consider all activities and objects as interconnected (Kenley, 2004;Garcia-Lopez et al, 2019). From the idea of flow, first found in the manufacturing industry, comes pull planning, the Last Planner System ® , location-based management systems, and Takt planning (Ballard, 2000;Frandson et al, 2013;Kenley, 2004;Kenley & Seppänen, 2020;Yassine et al, 2014).…”

Section: Introductionmentioning

confidence: 99%

How Does Flow Impact Data Center Roofing Durations? A Case Study

Apgar¹,

Smith²,

Copenhaver³

2022

Proc. 30th Annual Conference of the International Group for Lean Construction (IGLC)

View full text Add to dashboard Cite

Throughout the last few decades, a slow shift from the Critical Path Method to other, flow-focused scheduling methods has occurred in the industry. However, they have not yet been widely implemented by construction companies. This case study was conducted on a private data center project on a large site in which the project team has applied Takt time, pull planning, and location-based scheduling (i.e., Takt planning). The case study takes into consideration the roofing schedules for five buildings constructed over a span of three years and compares their total roofing task duration before and after the implementation of these techniques. The analysis has shown that a focus on flow and implementation of Takt planning on a large data center project decreases the overall duration of roofing construction tasks. This case study serves as a support for the transition from the traditional Critical Path Method to Takt planning or a flow-based approach since it has effectively decreased total roofing duration in this project.

show abstract

Work Structuring for Flow

Cited by 4 publications

References 10 publications

An Evaluation of the Lookahead Planning Function in Last Planner® System

An Evaluation of the Lookahead Planning Function in Last Planner® System

Workflow Optimization with Construction Scheduling under a Lean Perspective

How Does Flow Impact Data Center Roofing Durations? A Case Study

Contact Info

Product

Resources

About