Scheduling & Earned Value

• Forward pass: ES of an activity = largest EF of its predecessors; EF = ES + duration.
• Backward pass: LF = smallest LS of its successors; LS = LF − duration.
• Total float = LS − ES. The critical path is the chain with zero total float, and it is the longest path through the network.

Worked: a status report

BAC = $500k, PV = $200k, EV = $180k, AC = $210k. CV = −$30k, SV = −$20k, CPI = 0.86, SPI = 0.90: over budget and behind schedule. EAC = 500/0.857 = $583k.