Ranking of railway construction project delay factors in Malaysia by using relative importance index (RII)

2021 ◽  
Author(s):  
M. Z. Ramli ◽  
M. Z. Z. Abidin ◽  
N. B. Hamid ◽  
R. Razman ◽  
N. A. M. Noh
Author(s):  
Qais Amarkhil ◽  
Emad Elwakil ◽  
Bryan Hubbard

This Meta-Analysis has examined the past ten years' studies concerning the causes of construction project delay. It aims to update the subject area and investigate critical causes of project delay in three different conditions of the external environment. The data from 50 studies have been analyzed and synthesized to determine the top ten critical causes of delay. The Relative Importance Index (RII) technique was applied to rank the critical causes; subsequently, the Spearman's Rank correlation coefficient was calculated to evaluate the critical causes. The review findings indicate substantial differences between the critical causes of project delay in defined situations. The top ten critical causes of delay in developed countries root in the project's internal environment. The leading causes of delays in developing countries are from the project's internal and task environment.


2011 ◽  
Vol 403-408 ◽  
pp. 2560-2563
Author(s):  
Xiang Dong Zhao ◽  
Hao Lian ◽  
Dong Sheng Zhang

The CPM and PERT are the most popularly used underlying method of schedule planning of construction project, Problematically, CPM and PERT depend on the experiences of project manager, which is not true in railway construction project. A huge deviation occurs between the actual progress and planned schedule. This leads to unreasonable allocation of resources and cost increment. Referring to the characteristics of schedule planning of railway construction projects, we proposed schedule planning conceptual model of railway construction project based on CAS. The model consists of three parts. They are master schedule, forecasting planning and operational planning. Forecasting planning is produced by master schedule and adjusted by operational planning dynamically. In addition, RBF neutral network is employed to improve the accuracy of master schedule. The paper provides novel viewpoint and idea for project management of railway construction.


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