Takt Planning and Takt Control is a crucial method utilised in Lean Construction. It has however recently undergone criticism due to its scheduling rigidity during construction and hindrance to adjustments during the course of a project. Generating a takted time plan is done at the beginning of a project and is not necessarily fixed during its whole lifetime. The Takt Plan offers a framework for a stable project execution and increased transparency throughout the construction process. In case of disruptions or changes of the framework conditions, the consequences can be visualised and managed in a targeted way. The Takt Plan can then be adjusted in accordance. The long-term goal is to reduce the required adjustments and increase the accuracy of predictions. This is done by increasing the experience of practitioners within the method by applying it and through a greater control over the construction process. During the execution of a project various adjustment mechanisms can be applied. These adjustment mechanisms can be flexibly implemented depending on the circumstances and the desired approach. The aim of this article is to introduce and categorise possible adjustment mechanisms within the scope of Takt Planning and Takt Control. In total 31 adjustment mechanisms are identified. Based on the experience of the authors, their effects and consequences are additionally presented. Using examples, a selection of the five adjustment mechanisms most used in current projects are explained in detail.
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