Delay is one of the most common problem in construction industry. Many projects experience extensive delays and thereby exceed initial time and cost estimates. When a project completion date is delayed, causing cost increases or other damages, one or more of the parties may seek compensation by submitting a "claim" for these occurrences. The equitable allocation of responsibility for project delays becomes essential to the resolution of many construction disputes and claims. Analysis of schedule delay is carried to find out what happened in the project, when and how did delay event impact schedule and who caused the event. The impact, timing and the contributing effect of each of those causes to the overall delay should assist in helping the parties settle the delay without litigation. For this, there are different methods available for schedule delay analysis and selecting the appropriate one is the concern of all parties. In this paper, five commonly used schedule delay analysis methods in the construction industry are taken and the appropriate one is being tried to select by using the analytical hierarchy process (AHP). All the data are assumed one and the highest number in the ranking is appropriate method.

Purpose The purpose of this paper is to identify risk patterns of road and bridge projects in Vietnam, where the construction market is emerging but attractive to construction organizations, especially foreign companies. Design/methodology/approach Using a questionnaire, experienced practitioners of various contractors were interviewed to collect risk-related data in terms of actual likelihood and impact from road and bridge construction projects in Vietnam. Using the collected data of actual likelihood and impact, the specific probability and impact of risk factors were determined for different types of road and bridge projects, including small and medium type, big type, government-funding type, and other-funding type (e.g. official development assistance funds, public-private partnership). Findings The results of analysis indicate the specific probability and impact of risk factors in four risk themes, including contractor-related, project-related, owner-related, and external risks. Actual risk patterns for different types of road and bridge projects in Vietnam were identified. Practical implications The identification of actual risk patterns could help practitioners to know which risk factors are severe in frequency and/or impact. Hence, they could establish proper strategies to manage risk-related problems of road and bridge projects, in which they are directly involved. Originality/value The findings of this study could provide construction companies, especially foreign companies, with a better understanding of real risk panorama in Vietnamese road and bridge construction. Hence, they could make effective improvements on risk management of road and bridge projects in Vietnam.

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Construction industry is broadly agreed as one of the most important sectors of any economy around the world. In this paper, time series data of Korean construction industry and Korean economy are examined. The Bon's proposition will be inspected for Korean context using both cross-sectional and longitudinal analyses. The analysis of the longer than four decades national account statistic of the Korean macro economy verify Bon's proposition of an inverted U-shaped relationships. The verified U-shaped relationships for Korean context exist not only in terms of the construction share in total GDP but also in terms of total construction volume as an economy develops from LDC to NIC and then to AIC eventually with time. The results of the thesis show that the contribution towards the macro economy has varied across different stages of development.