An Integrated Efficiency-Risk Approach in Sustainable Project Control

4.1 Computing the Cost and Schedule Buffers of the Projects

In this method, it is necessary to compute the buffer mentioned in this article, the schedule buffer mentioned, and the cost buffer. For the calculation of these buffers, the estimated average time and cost for all activities are used. Based on the estimation of duration and cost of activities, the probability function of each one, and the formulas in Section 2, the cost buffer and schedule buffer of the project can be extracted by various methods.