What is earned value management (EVM) in construction?

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Earned value management (EVM) is a project controls technique that measures schedule and cost performance by comparing planned value, earned value and actual cost at any point in time. It produces CPI and SPI indices that show whether the project is over budget or behind schedule — and by how much. Earned value management (EVM) is a quantitative technique for measuring how a project is performing against its plan, using three values calculated at any reporting period:

- Planned Value (PV) — the budgeted cost of work scheduled to be complete by this date
- Earned Value (EV) — the budgeted cost of work actually completed
- Actual Cost (AC) — what you have actually spent on the completed work

From those three numbers, EVM derives the two headline indices:

- Cost Performance Index (CPI) = EV ÷ AC. A CPI below 1.0 means you are spending more than planned for the work completed.
- Schedule Performance Index (SPI) = EV ÷ PV. An SPI below 1.0 means you have earned less value than planned — you are behind schedule.

EVM also enables forecasting: Estimate at Completion (EAC) and Estimate to Complete (ETC) project where the project will finish on cost if performance continues at the same rate.

The technique requires a cost-loaded schedule — activities with budgeted costs attached — so that earned value can be calculated as each activity completes. This is why EVM is tightly coupled to Primavera P6 in practice: P6 holds the baseline, the progress updates and the resource rates needed to compute EV.

Bildstak connects P6 and the cost ledger (SAP, Maconomy or a spreadsheet) and computes EVM metrics automatically, making them queryable alongside the BIM model and RFI data. Ask "what is the CPI on the civil works package?" and get a cited answer from live data.

ما هي إدارة القيمة المُكتسَبة (EVM) في الإنشاءات؟

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