A probabilistic schedule delay analysis in construction projects by using fuzzy logic incorporated with relative importance index (RII) method

Download

index.pdf

Date

2010

Author

Özdemir, Mustafa

Metadata

Show full item record

Item Usage Stats

1126
views

548
downloads

The aim of this thesis is to propose a decision support tool for contractors before the bidding stage to quantify the probability of schedule delay in construction projects by using fuzzy logic incorporated with relative importance index (RII) method. Eighty three (83) different schedule delay factors were identified through detailed literature review and interview with experts from a leading Turkish construction company, then categorized into nine (9) groups and visualized by utilizing Ishikawa (Fish Bone) Diagrams. The relative importances of schedule delay factors were quantified by relative importance index (RII) method and the ranking of the factors and groups were demonstrated according to their importance level on schedule delay. A schedule delay assessment model was proposed by using Fuzzy Theory in order to determine a realistic time contingency by taking into account of delay factors characterized in construction projects. The assessment model was developed by using Fuzzy Logic Toolbox of the MATLAB Program Software. Proposed methodology was tested in a real case study and probability of schedule delay was evaluated by the assessment model after the required inputs were inserted to software. According to the case study results, the most contributing factors and groups (that need attention) to the probability of schedule delays were discussed. The assessment model results were found to be conceivably acceptable and adequate for the purpose of this thesis.

Subject Keywords

Civil engineering.

URI

http://etd.lib.metu.edu.tr/upload/12612169/index.pdf
https://hdl.handle.net/11511/19733

Collections

Graduate School of Natural and Applied Sciences, Thesis

Suggestions

OpenMETU
Core

A generic risk and vulnerability assessment framework for international construction projects Özcan, Gülbin; Dikmen Toker, İrem; Department of Civil Engineering (2008) Project Risk Management (PRM) comprises of identification and assessment, analysis and mitigation of risk factors in order to meet the project objectives. Risk identification and assessment process has the greatest importance as the risk models are constructed based on previously defined risk sources and their interrelations. Although previous studies have concentrated on the relation between risk events and their consequences, the link between them must be modeled by considering the various chains of risk ...
A strategic safety management framework through balanced scorecard and quality function deployment Gunduz, Murat; Simsek, Burak (Canadian Science Publishing, 2007-05-01) The aim of this paper is to propose a safety management framework for construction companies. A literature review was carried out to identify significant factors that would improve safety performance. Two management tools-namely, the balanced scorecard and quality function deployment (QFD)-were used to construct the framework. Strategic goals were established for each of the following perspectives of the balanced scorecard: financial and cultural, employee, process, and learning. Afterwards, a questionnaire...
A simplified non-linear procedure for buildings with shear walls TEKELİ, Hamide; Atimtay, Ergin (Thomas Telford Ltd., 2015-01-01) A simple and easily applicable analytical method is proposed to obtain the capacity curve of buildings with shear walls as the first stage of a seismic pushover analysis. The method is based on controlling the curvature distribution of shear walls. Accuracy of the method was examined based on data of three sample buildings compiled from the literature. The buildings have different floor areas, number of storeys and cross-sectional areas of shear walls. The method can be economically used with respect to bot...
A comperative assessment of available methods for seismic performance evaluation of buried structures Özcebe, Ali Güney; Çetin, Kemal Önder; Department of Civil Engineering (2009) In the last three decades, seismic performance assessment of buried structures has evolved through the following stages : i) buried structures are not prone to seismically-induced damages, thus no need for detailed investigations, ii) eliminating soil-structure-earthquake interaction and use of seismically-induced free field ground deformations directly as the basis for seismic demand, thus producing conservative results, and finally iii) soil-structure and earthquake interaction models incorporating both k...
A Methodology for Optimal Layout Design of Pressure Cells for Concrete Faced Rockfill Dams Arı, Onur; Yanmaz, Ali Melih (Springer Science and Business Media LLC, 2018-08-01) In this study, a methodology for optimal layout design of pressure cells for concrete faced rockfill dams is developed. A representative dimensionless stress distribution model was formed for obtaining the magnitudes and location of different stress zones as a function of dam height. This information enabled development of a procedure for proper location and the number of pressure cells throughout the dam body. A vertical placement algorithm based on error minimization was first developed, which is followed...

Citation Formats

M. Özdemir, “A probabilistic schedule delay analysis in construction projects by using fuzzy logic incorporated with relative importance index (RII) method,” M.S. - Master of Science, Middle East Technical University, 2010.