ABSTRACT
There is consensus among practitioners and academics that Construction Projects involve a high degree of uncertainty that ideally could be reduced if timely, effective and efficient Construction Planning and Scheduling (P&S) is carried out (Figure 5.1). However, despite the unanimous assertion about the importance of P&S; and the agreement on the benefits that good P&S can bring to a construction project and the problems that a bad or non-existent (i.e. improvising) P&S can produce, the compliance of projected construction costs and schedules are an exception rather than a norm in construction projects, showing that the results of P&S are not as effective as it is expected or even desired. Figure 5.1 illustrates how the ability to influence costs in a construction project is bigger while the involvement in planning and scheduling is earlier.
