Why Would Location-Based Scheduling Be Applicable for Offshore Wind Turbine Construction?

Lerche, Jon; Seppänen, Olli; Pedersen, Kristian Birch; Neve, Hasse H.; Wandahl, Søren; Gross, Allan

doi:10.24928/2019/0121

Cited by 7 publications

(3 citation statements)

References 13 publications

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“…Since the inception of CPM, a variety of other and often-times related network scheduling methods have been developed (e.g., Russell & Wong 1993). Location based scheduling (LBS) explicitly depicted location-dependent logic (Willis 1998, Harris & Ioannou 1998, Kenley & Seppänen 2010, Lerche et al 2019. Takt planning further introduced into the plan a given beat (the takt) and the direction of the flow of work, as will be elaborated on in the next section.…”

Section: Literature Review Process Step Dependencies and Inter-proces...mentioning

confidence: 99%

Comparison of Takt Planning Methods Used on Projects of Different Types

Tommelein¹,

Lerche²

2023

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

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Takt planning has been used to deliver projects of different types and in different industry sectors. We presuppose here that the methods used to develop project takt plans therefore must vary. To test whether this presupposition holds we consider two different project types (wind turbines and healthcare facilities) and compare sample projects of these types in terms of the rationale that was applied when developing their takt plans. We show that the rationale takes into account the relative cycle times and associated resource costs of individual steps in their production processes, considering the dependencies between those steps and between processes. Little has been written in the literature to date about the relative costs of process steps in takt plans, and how these costs affect the opportunities planners have and choices they make when leveling workloads to determine the so-called "operable" takt time. That is done here. This paper contributes to the literature on takt production used to deliver construction projects by describing theoretical concepts that help to differentiate takt planning methods used to plan projects of different types.

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Section: Literature Review Process Step Dependencies and Inter-proces...mentioning

confidence: 99%

Comparison of Takt Planning Methods Used on Projects of Different Types

Tommelein¹,

Lerche²

2023

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

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“…One of the first lean construction tools was the Last Planner System™ (LPS) (Ballard 2000) which has proven its ability to improve planning effectiveness, e.g., Alarcón et al (2005); AlSehaimi et al (2009); Ballard (2000); Lerche et al (2020a). Later, the lean construction tool Location-Based Scheduling (LBS) emerged (Kenley and Seppänen 2010) and proved its ability to compress construction schedules (Evinger et al 2013;Lerche et al 2019a;Lerche et al 2019b;Seppänen et al 2014). Takt Time Planning (TTP), which is similar to LBS (Seppänen 2014), has also shown its ability to compress schedules (Heinonen and Seppänen 2016;Lerche et al 2020b).…”

Section: Background: Labour Efficiency and Lean In Constructionmentioning

confidence: 99%

Combining Lean Methods to Improve Construction Labour Efficiency in Renovation Projects

Neve¹,

Lerche²,

Wandahl³

2021

Annual Conference of the International Group for Lean Construction

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The construction industry has experienced stagnation and perhaps even a decline in construction labor productivity for decades. This is problematic as labour costs in construction constitute up to 60% of the total project costs.This research aimed to investigate further how much complimentary lean construction tools could impact Construction Labor Efficiency (CLE). CLE is a key element in the denominator when calculating Construction Labor Productivity (CLP) because CLP focuses on maximizing value-adding-work time (numerator) and minimizing nonvalueadding-work time (denominator).A case study research approach with four renovation projects was used to collect Lean Implementation Degree (LID) and CLE data. The research findings showed a strong positive correlation between LID and CLE in the four renovation projects.The findings have implications for both academia and industry professionals. Academia now has initial results on which future research can be built. Industry professionals now have a better understanding of how lean improves efficiency and hereby better arguments for why lean construction methods must be implemented in future renovation projects.The research was limited by a small sample size of only four renovation projects. Thus, further research is needed to validate the effects in renovation projects and other types of construction projects as well.

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“…Zegarra and Alarcón (2019) goes in another direction and analyses system behaviours through the lenses of lean management and complexity theories. Process mapping with takt-time planning (Heinonen and Seppänen 2016;Lerche, Neve, Wandah, et al 2020), location-based methods (Kenley andSeppänen 2010;Olivieri et al 2018;Lerche, Seppänen, et al 2019) and the Last Planner System (LPS) (Ballard 2000;Lerche, Neve, Ballard, et al 2020) are other approaches used for production system analysis.…”

Section: Production System Analysesmentioning

confidence: 99%

Learning to see value-adding and non-value-adding work time in renovation production systems

Neve

Wandahl

Lindhard

et al. 2020

Production Planning & Control

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For decades construction labour productivity has been stagnated or declining. Changing this issue requires new knowledge on the labour-intensive construction production system. The work sampling method was applied to collect data from 3 renovation construction production systems. It quantifies observations of on-site work and enables deep analyses of how time is used. The analysis revealed that the renovation projects had a baseline of value-adding-work (VAW) time on 29.5%. It further identified 5 system behaviours outlining how VAW and Non-Value-Adding work (NVAW) time behaves. The new knowledge of how both VAW and NVAW time behaves advances knowledge on how time is wasted in construction projects and opens new branches of future research. The findings are furthermore of potential use to industry professionals who work with process improvement in renovation projects because they provide, among others, answers to how targets can be defined for both VAW and NVAW.

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Why Would Location-Based Scheduling Be Applicable for Offshore Wind Turbine Construction?

Cited by 7 publications

References 13 publications

Comparison of Takt Planning Methods Used on Projects of Different Types

Comparison of Takt Planning Methods Used on Projects of Different Types

Combining Lean Methods to Improve Construction Labour Efficiency in Renovation Projects

Learning to see value-adding and non-value-adding work time in renovation production systems

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