Papers by Alexander Maravas
Procedia - Social and Behavioral Sciences, 2013
Procedia - Social and Behavioral Sciences, 2012
Egnatia Motorway is one of the most significant projects currently under construction in Europe w... more Egnatia Motorway is one of the most significant projects currently under construction in Europe with 646 bridges along its 680 km length. The methods employed for the construction of the Egnatia Motorway bridges are at the forefront of bridge construction technology including balanced cantilever, incremental launching, travelling formwork, pre-cast beams, cast-in-situ voided slabs and cast-in-situ posttensioned continuous box girder. In this paper a statistical analysis of the cost of construction of Egnatia Motorway bridges per construction method and deck area is presented. The cost data analysed is from on-site actual cost information provided by surveyed quantities and unit rates from construction contracts having considered revision of prices due to inflation, contractor's overheads and profit and then revalued to current prices (first quarter 2003).
International Journal of Information Technology Project Management, 2014
Journal of Construction Engineering and Management, 2011
International Journal of Project Management, 2012
The inherent uncertainty and imprecision in project scheduling have motivated the proposal of sev... more The inherent uncertainty and imprecision in project scheduling have motivated the proposal of several fuzzy set theory based extensions of activity network scheduling techniques. Building upon these, a cash flow calculation methodology for projects including activities with fuzzy durations and/or costs is proposed in this paper. According to the proposed approach, the project cash flow is represented by an S-surface (as opposed to the traditional S-curve) ensuing by connecting S-curves at different risk possibility levels. The methodology is exemplified by estimating the working capital requirements in a real world road construction project. Furthermore, the benefits of the methodology and its subsequent computerization are discussed. It is believed that the proposed approach may also be useful for both evaluating project proposals during feasibility studies and for performing earned value analysis for project monitoring and control.
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Papers by Alexander Maravas