Critical Chain/Buffer Management

2013 ◽  
pp. 187-208 ◽  
Author(s):  
Mario Vanhoucke
Keyword(s):  
Buffer Management ◽  
Critical Chain

scholarly journals Critical Chain Project Scheduling: Do Not Oversimplify

2002 ◽  
Vol 33 (4) ◽  
pp. 48-60 ◽  
Author(s):  
Willy Herroelen ◽  
Roel Leus ◽  
Erik Demeulemeester
Keyword(s):  
Project Management ◽  
Project Scheduling ◽  
Critical Review ◽  
Buffer Management ◽  
Direct Application ◽  
Theory Of Constraints ◽  
Management Literature ◽  
Critical Chain

Critical chain scheduling/Buffer management (CCS/BM)—the direct application of the theory of constraints (TOC) to project management—has received much attention in project management literature. There still is controversy over the merits and pitfalls of the CCS/BM methodology. This paper focuses on the fundamental elements of CCS/BM logic and pinpoints some intricacies that are not commonly referred to in the available literature. The authors’ analysis is based on a critical review of the relevant sources and experimentation with both commercial CCS/BM software and an internally developed CCS/BM-based tool.

Zastosowanie metody critical chain scheduling (CCS) w przedsięwzięciach budowlanych

2004 ◽  
pp. 22-26
Author(s):  
Agata Czarnigowska ◽  
Piotr Jaśkowski ◽  
Anna Sobotka
Keyword(s):  
Buffer Management ◽  
Construction Project ◽  
Critical Chain

Przedstawiono krótkie omówienie metody, zwanej CC/BM (critical chain scheduling and buffer management) lub CCPM (critical chain construction project). Podkreślono, że nie jest ona powszechnie znana i stosowana w praktyce w Polsce. Przedstawiono przykład wykorzystania tej metody do harmonogramowania przedsięwzięcia budowlanego. Przytoczono krytyczną analizę tej metody w odniesieniu do warunków realizacji przedsięwzięć budowlanych. Zaprezentowano koncepcję udoskonalenia metody harmonogramowania łańcucha zadań krytycznych.

scholarly journals Influence of Buffer Size change in Critical Chain Scheduling: Case Study

2021 ◽  
Vol 6 (2) ◽  
pp. 95-101
Author(s):  
N. Abidah ◽  
Muataz Al Hazza
Keyword(s):  
Project Management ◽  
Buffer Management ◽  
Buffer Size ◽  
Network Density ◽  
Adaptive Procedure ◽  
Size Change ◽  
Critical Paths ◽  
Management Approaches ◽  
Critical Chain

Performing the Critical Chain Scheduling (CCS) and Buffer Management (BM) in project management has recently risen as one of the most popular project management approaches. The critical Chain Scheduling (CCS) approach is replacing the traditional scheduling method to reduce the uncertainty associated with time schedules. The research highlights the importance of critical chain scheduling in project execution by investigating using buffers in the critical paths and the feeding baths in project management using a real case study. The case study was studied by analyzing the schedule provided and then implementing CCS and BM using four different methods. The methods are cut and paste (C&PM), the root square method (RSEM), the Adaptive procedure with resource tightness, and the Adaptive procedure with network density (APND). The buffer size obtained for each method was determined. From the result got, for project buffer in adaptive approach with network density method yields a larger buffer size compared to the adaptive procedure with resource tightness method. While for feeding buffer also show that APND resulted in a larger buffer size than APRT. Finally, the proposed buffer size was investigated and simulated using the What if approach.

Improved critical chain buffer management framework considering resource costs and schedule stability

2016 ◽  
Vol 29 (2) ◽  
pp. 159-183 ◽  
Author(s):  
Xuejun Hu ◽  
Erik Demeulemeester ◽  
Nanfang Cui ◽  
Jianjiang Wang ◽  
Wendi Tian
Keyword(s):  
Buffer Management ◽  
Management Framework ◽  
Schedule Stability ◽  
Resource Costs ◽  
Critical Chain

A New Buffer Setting Method Based on Activity Attributes in Construction Engineering

2012 ◽  
Vol 174-177 ◽  
pp. 3274-3281 ◽  
Author(s):  
De Yin Liu ◽  
Jian Guo Chen ◽  
Wei Peng
Keyword(s):  
Buffer Management ◽  
Theory Of Constraints ◽  
Simulation Test ◽  
Construction Engineering ◽  
Schedule Management ◽  
Depth Analysis ◽  
Novel Method ◽  
Critical Chain ◽  
Schedule Network ◽  
Activity Attributes

The direct application of the Theory of Constraints (TOC) to construction engineering, known as Critical Chain Management and Buffer Management (CCM/BM), has recently emerged as one of the most popular approaches to schedule management. However, the existing buffer setting techniques have less aken the activity attributes into account. In this paper, we introduce the concept of structure entropy to reflect the complexity of schedule network of construction project and propose a novel method for buffer sizing based on an in-depth analysis of activity attributes. After simulation test and comparison with classical methods, the proposed method is proved to have better accuracy and effectiveness.

The Interaction Between Critical Chain Sequencing, Buffer Sizing, and Reactive Actions in a CC/BM Framework

2019 ◽  
Vol 36 (03) ◽  
pp. 1950010 ◽  
Author(s):  
Xuejun Hu ◽  
Jianjiang Wang ◽  
Kaijun Leng
Keyword(s):  
Buffer Management ◽  
Project Planning ◽  
Control Technique ◽  
Planning And Control ◽  
Widespread Acceptance ◽  
The Cost ◽  
And Control ◽  
Management Preferences ◽  
Cost Factors ◽  
Critical Chain

In the past decades, the critical chain scheduling and buffer management (CC/BM) methodology has gained widespread acceptance as an emerging project planning and control technique. This paper first presents six priority indices for selecting the optimal critical chain when more than one such chain is possible. Next, we examine four schedule generation schemes for rescheduling, along with two control actions (i.e., expediting work to shorten activity durations and adding emergency resources to bring forward activity start times) for repairing a critical chain schedule whenever activity delays cross the buffer threshold. The main results of our computational experiments include the non-negligible impact of different critical chain sequences on the project robustness measures, the appropriate level of feeding buffer sizes, and the trade-off between different reactive responses in relation to the cost factors or management preferences.

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