Buffer Management in Takt Planning – An Overview of Buffers in Takt Systems

Dlouhy, Janosch; Binninger, Marco; Haghsheno, Shervin

doi:10.24928/2019/0226

Cited by 11 publications

(12 citation statements)

References 5 publications

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“…In addition to decreased overall duration, batch size reduction can enable greater control and transparency of the process (Valente et al 2013). However, reducing the batch size and buffers increases the control effort (Dlouhy et al 2019) and could result in problems if the amount of variability in the production is high (Haghsheno et al 2016).…”

Section: Detailed Takt Planningmentioning

confidence: 99%

“…minimizing takt time variation; Frandson 2019), the management of capacity buffers is simultaneously eased. Additional time buffers are reserved for the end of the schedule and can be placed between wagons to protect the process flow when needed (Dlouhy et al 2019) if the negative effects of variability cannot be tackled with other buffers. In this respect, time buffering in takt production differs from time buffering in LBMS because its main purpose is not to protect against cascading delays but rather to support other buffering methods when necessary.…”

Section: Detailed Takt Planningmentioning

confidence: 99%

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How takt production contributes to construction production flow: a theoretical model

Lehtovaara

Seppänen

Peltokorpi

et al. 2020

Construction Management and Economics

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Takt production has recently received increased attention in both the construction industry and academia. However, the research on takt production has focused on documenting single successful cases, while attempts to holistically explore the impact of takt production on construction production flow are scarce. To address this knowledge gap, this study aimed to build a theoretical model of how takt production contributes to construction production flow. A qualitative multiple-case study was conducted to validate propositions based on a literature review, and the results were discussed and synthesized in the form of a theoretical model. The findings indicate that while takt production is a viable method to increase flow, it requires significant effort in terms of planning, control, and continuous improvement. While having a positive impact on process flow (location flow), the effects on operations flow (trade flow) are contradictory. The study has implications for further comprehensive evaluation of the effects of takt production on construction production flow while facilitating more predictable, systemic implementation of takt production across projects.

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Section: Detailed Takt Planningmentioning

confidence: 99%

Section: Detailed Takt Planningmentioning

confidence: 99%

How takt production contributes to construction production flow: a theoretical model

Lehtovaara

Seppänen

Peltokorpi

et al. 2020

Construction Management and Economics

View full text Add to dashboard Cite

show abstract

“…The two groups were: 1. Control group -this group of projects consisted of 91 projects managed using a two-week buffer implemented as a 'calculated end buffer' as described by Dlouhy et al (2019). The approach is also based on LPS, with the reduction of two weeks from the critical path for each projects' pull-plan, as recommended by Ballard and Tommelein (2016 p. 9) that "Variation in production systems can be reduced but never eliminated, so buffers are required to absorb that variation and protect targets".…”

Section: Methodsmentioning

confidence: 99%

Optimized Installation Flow – A Strategy for Substantial Cycle Time Reduction

Gabai¹,

Sacks²

2020

Proc. 28th Annual Conference of the International Group for Lean Construction (IGLC)

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Industrial system infrastructure installations, such as those in semiconductor fabrication plants, are complex, short-term and mission critical. They frequently encounter productivity, predictability and performance problems. We propose a strategic approach to manage such projects and substantially reduce their durations. The method, called Optimized Installation Flow (OIF), builds on lean and associated theories in the realm of production planning and control, synthesizing a method with seven principles. The results of implementation of OIF in 108 such projects show marked and consistent improvement in project duration when compared with the results of 91 other projects managed using the same company's previous best practice "Two-week buffer" approach. On average, cycle time durations for tool installation projects were reduced by 42%-48%, without any overtime on site. The method is gradually being adopted as new standard practice throughout the construction management portfolio of the case study company. OIF is an operating strategy that has demonstrated improvement, shifting mindsets, behaviours and organization's culture.

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“…Although clear repetition of processes and a small amount of variability greatly helps the planning and control process (e.g., Haghsheno et al 2016;Vatne and Drevland 2016), takt production is not only limited to cases with a high amount of repetition and low variability (e.g., Tommelein 2017). Variability can be effectively managed by applying time, capacity, inventory, or plan buffers (Dlouhy et al 2019), with a preference on capacity buffers that are often underutilized in current planning and control practices (Frandson 2019). By decreasing batch size, production can be paced more tightly, resulting in a decreased duration (Dlouhy et al 2019).…”

Section: Diagnosis and Solution-forming Takt Production In Constructionmentioning

confidence: 99%

“…Variability can be effectively managed by applying time, capacity, inventory, or plan buffers (Dlouhy et al 2019), with a preference on capacity buffers that are often underutilized in current planning and control practices (Frandson 2019). By decreasing batch size, production can be paced more tightly, resulting in a decreased duration (Dlouhy et al 2019). However, with more uncertain and complex projects, control of tightly-paced production can be challenging.…”

Section: Diagnosis and Solution-forming Takt Production In Constructionmentioning

confidence: 99%

Implementing Takt Production in Renovation Projects

Sahlberg¹,

Lehtovaara²,

Seppänen³

2021

Proc. 29th Annual Conference of the International Group for Lean Construction (IGLC)

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Renovation projects are a special type of construction projects. The unique features of renovation projects make production control challenging, as they often cause a great deal of variation, resulting in waste in production and reducing profitability. Takt production has been applied to renovation, but its specific suitability and benefits in renovation projects have not been studied widely.This paper describes a design science study that i) examines the suitability of takt production in renovation projects through literature and interviews, ii) designs a process model for applying takt production in renovation projects, and iii) applies and validates the designed process model in a case project.The findings imply that takt production can benefit renovation projects. The study highlights the significance of fulfilled prerequisites and well-managed supporting functions in takt production. If these requirements are not fully met, the significance of proactive problem-solving in production control and collaborative practices increases.

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Buffer Management in Takt Planning – An Overview of Buffers in Takt Systems

Cited by 11 publications

References 5 publications

How takt production contributes to construction production flow: a theoretical model

How takt production contributes to construction production flow: a theoretical model

Optimized Installation Flow – A Strategy for Substantial Cycle Time Reduction

Implementing Takt Production in Renovation Projects

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