An ontology-based approach for delay analysis in construction

Delay is a common problem of the construction sector and it is one of the major reasons of claims between project participants. Systematic and reliable delay analysis is critical for successful management of claims. In this study, a delay analysis ontology is proposed that may facilitate development of databases, information sharing as well as retrieval for delay analysis within construction companies. A detailed literature review on construction delays has been carried out during the development of the ontology and it is evaluated by using five case studies. The delay analysis ontology may be used for different purposes especially to support decision-making during risk and claim management processes. It may enable companies to create their own databases, corporate memories and develop decision support systems for better analysis of delays.


An ontology-based approach for delay analysis
Bilgin, Gözde; Birgönül, Mustafa Talat; Dikmen Toker, İrem; Department of Civil Engineering (2011)
Delay is a common problem of construction sector. Recent improvements in the sector increased the competition and this led the construction projects to be more complex than before and difficult to be completed in time. This situation not only increased the delay problems, but also made the analysis of delays difficult and that caused further problems as disputes between parties to the contract. Sound knowledge in delay analysis subject is needed to enhance the solution of the delay problem in construction p...
A Construction Delay Analysis Approach Based on Lean Principles
EROL, HACI HÜSEYİN; Dikmen Toker, İrem; Birgönül, Mustafa Talat (2017-07-12)
Delay is a quite common problem for construction projects. The existing practice of construction management is usually based on assessment of delays, liabilities and claims. However, this approach does not serve to remove the underlying causes of delay problems. In addition to estimation of delays, there is a need for a systematic method that will prevent delays in projects. Lean construction has tools and techniques that can serve for this purpose. However, a formal delay analysis procedure does not exist ...
A Fuzzy delay assessment tool for construction projects
Ghaziani, Aydin; Dikmen Toker, İrem; Birgönül, M Talat; Department of Civil Engineering (2012)
It is a known fact that construction projects do not often complete on time due to several reasons related with the unexpected changes in the project conditions, external factors or performance of project participants. Since construction projects are unique and limited information is available at the beginning of the projects, prediction of delays is a difficult task. However, if the delays can be assessed at the early stages, their impacts might be minimized, some of the delays can even be eliminated. This...
A Comparative study on direct analysis method and effective length method in one-story semi-rigid frames
Bektaş, Şinasi; Birgönül, Mustafa Talat; Department of Civil Engineering (2012)
Many factors such as unforeseeable events, managerial or financial problems of Contractor, insufficient technical capacity of Engineer's site team and so on may lead to delays in construction projects. Proper analysis of compensability and quantum of a delay event is very important. Any delay analysis application can be considered as a result of the combination of contract documents, scheduler, record keeping mechanism at site, communication among project participants, delay analyst and delay analysis metho...
An Integrated regression-bootstrap sampling scheduling method for probabilistic duration range estimation of construction projects
Barış, Özgür; Sönmez, Rifat; Department of Civil Engineering (2019)
The estimation of project duration is important in construction projects, since it directly affects the costs and the success of the projects. Schedule risks can be determined along with the duration estimations in order to assess the possibility of delay penalties and additional costs. Therefore, the accuracy of the estimation of project duration range is very crucial in construction industry to assess the schedule risks. This thesis presents an integrated approach of non-parametric bootstrap sampling meth...
Citation Formats
G. Bilgin, İ. Dikmen Toker, and M. T. Birgönül, “An ontology-based approach for delay analysis in construction,” KSCE JOURNAL OF CIVIL ENGINEERING, pp. 384–398, 2018, Accessed: 00, 2020. [Online]. Available: