Open AccessExternal time-influencing risk factors in infrastructure soft soils projects
Author(s) -
Wai Wah Low,
Kings Wong,
J. L. Lee
Publication year - 2020
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/943/1/012028
Subject(s) - business , government (linguistics) , analytic hierarchy process , risk management , critical infrastructure , environmental planning , environmental resource management , engineering , environmental science , finance , computer science , philosophy , linguistics , operations research , computer security
Malaysian government has putting a lot of budget and resources in developing and upgrading infrastructure of the country. The covered area of an infrastructure project especially in a transportation project is quite significant compared to residential and commercial projects. As such, construction on soft soils is unavoidable and it increases uncertainties and risks in an infrastructure project. The current literature review showed that existing knowledge on risk assessment of infrastructure projects on soft soils is scarce. Hence, this research was focused on determining the critical time-influencing external risk factors during the construction phase. Analytical Hierarchy Process (AHP) was used to determine the most critical external risks in infrastructure projects on soft soils. Research method was questionnaire survey. It is found that the five most critical risk factors were thick soft soil layer, high water content, high organic content, price changes (material & energy) and karstic cavity formation. While the five least critical risk factors were archaeological/habitant issue, lack of political support, protectionism, corruption and change in government/legislative/regulatory. In conclusion, soil condition and economic are critical determining the time performance in infrastructure projects on soft soils, while political risk contributes little impact on this aspect.