Xie & Yang (2010) | A Study on Management Risk Evaluation System of Large-Scale Complex Construction Projects | ● Grey Systems Risk Evaluation technique ● Case study of Nanning International Convention and Exhibition Center in China ● Questionnaires and Interviews ● Descriptive and inferential statistics | Method was capable of reflecting greyness, fuzziness and randomicity of data in the organization of sophisticated projects | There is need for reasonable and scientific method of evaluating risks | Lack of risk management tool |
Adhikari (2011) | Sustainability Analysis of Hydropower in Nepal | ● Quantitative methods ● Literature review ● Involved the Government, NGOs and sector stakeholders | Sustainability of those projects was above acceptable levels | Need to develop more sustainability measures to reach the international standards | Stakeholder involvement |
Shebob, Dawood & Xu (2011) | Analyzing construction delay factors: A study of building construction project in Libya | ● Randomly selected construction companies in Libya ● Semi structured interviews | Change in projects’ scopes; delays in material supplies, changing prices, and inadequate skills among workers cause delay in construction works nationally | Inadequate labour management and failure by different stakeholders to meet the set timelines lead to delays | ● Inadequate labour skills ● Stakeholder conflict |
Mohamed (2015) | A Study of Project Delay in Sudan Construction Industry | ● Quantitative design ● Questionnaire for beneficiaries, consultants and contractors | Fluctuation in prices for construction materials, inaccurate time and cost estimates, negative social impacts, materials shortage, and litigation cause delays | Risk mitigation measures are quality cycles, joint risk management, and information sharing. | ● Poor time, labour and cost estimates ● Stakeholder interference |
Tipili & IIyasu (2014) | Evaluating the impact of risk factors on construction projects cost in Nigeria. | ● Self-administered questionnaires ● Professionals in the construction industry in Nigeria ● Probability score ● ANOVA was utilized to evaluate likelihood | ● Time and cost related risks are likely to occur with more impact on project completion ● Environmental factors are less likely to occur with least impact on projects | Risks vary in severity and occurrence among projects | ● Time and cost related risks ● Environmental factors |
Mweresa (2013) | Impact of Increasing Building Construction Costs on Effective Implementation of Public Projects: A Case Study of the Projects Initiated by the Ministry of Public Works within Nairobi County – Kenya | ● Quantitative analysis method by descriptive statistics ● Purposive sampling used to select 40 respondents ● Questionnaires and document analysis | ● Work definition, bureaucracy in government, risk allocation; timeliness; requirements’, resource planning, inefficient preparation and contractors’ inabilities have notable impacts on completion | Risks in construction projects result from inadequate managerial practices. | ● Cost estimates, Time related risks ● Labour related risks ● Managerial practices |