PSI - Issue 22

Rosário Oliveira / Procedia Structural Integrity 22 (2019) 151–159 Rosário Oliveira / Structural Integrity Procedia 00 (2019) 000 – 000

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Fig. 2. Measurement with the earned value (EV)

In the monitoring and control of the schedule and cost of the work, it was necessary to evaluate the actual costs (AC) of the work carried out on site. The evaluation of these actual costs (AC) required the control of the invoices to be paid to suppliers, related with materials, labor, equipment and subcontractors, resulting from the costs of resources spent on the execution of the work. Fig. 3 shows the records of the invoices payable to suppliers, resulting from the actual costs (CA) of the resources invested in the execution of the work.

Fig. 3. Actual Costs (CA) invested on work.

Thus, if we evaluate the values of the actual costs (AC) spent on execution and relate to the planned values (PV) and earned values (EV), then we can use EVM`s indicators for monitoring performance of the schedule and cost of the work. With the key metrics of EVM defined, the conditions necessary for the calculation of the States Indicators, Performance and Forecast Indicators are assembled. Based on these Indicators, the performance reports are prepared on the date of the control. The progress reports of the work should contain information relevant to the decisions of managers, which are to be timely, effective, concise and objective. Its template should describe the state of execution of the work referenced at the date of the evaluation and can be organized by analyzing the performance indicators of the schedule and cost, as well as estimates at completion of the works. Based on PV, EV and AC we can analyze the performance of the works and make estimates defining trends in schedule and cost until its completion (Fig. 4).