Quantifying Delay Risk Potential of Road Projects during Construction Phase: A Case Study

Civil Engineering, Diponegoro University, 50275 Semarang, Indonesia

^* Corresponding author: devii.anggrainii@gmail.com

Abstract

A comprehensive plan is required to anticipate risks in a construction project. In practice, however, anticipated or unanticipated risks may eventually lead to delays in the project completion date. The aim of this research is to quantify the delay risk potential of a road project during the construction phase. A project at Batang-Kendal road has carried out thorough planning for all required aspects. However, in the implementation of a project, there is often the occurrence of irregular events, which act as a case study for this research, from which delays were identified, observations mapped and semi-structured interviews conducted with project stakeholders, i.e. owner, contractors and supervisory consultants. An instrument was developed to assess and quantify the project risks identified using a 1 to 5 Likert scale. The results showed nine types of delay risks and 32 sub risks. The quantification of these risks was classified into four risk levels, i.e. extreme (6.25%), high (53.13%), medium (34.37%) and low (6.25%). These findings may represent delay risk potentials of typical road projects during the construction phase, from which lessons can be learned. The assessment instrument proposed can also be used for other road projects, which will be beneficial for project stakeholders in anticipating delay risk potentials.