PV: planned value (the value of the plan to be completed)
EV: earned value (the value of what is actually done)
AC: actual cost (how much money is actually spent)
SV: progress deviation EV-PV (the progress of the project ahead or behind )> 0 project ahead of schedule < 0 project behind schedule
CV: cost deviation EV-AC (project budget empty winner profit) > 0 cost saving < 0 cost overrun
SPI: schedule performance index EV/PV (earned value and planned value Ratio) < 1 project behind schedule > 1 project ahead of schedule
CPI: cost performance index EV/AC (ratio of earned value to actual cost) < 1 cost overrun > 1 cost savings
Measures that can be taken if the schedule is behind and the cost is overrun
: (1) Replace inefficient personnel with efficient personnel
(2) Concurrent construction under the condition of preventing risks
(3) Improve resource utilization
(4) Strengthen and improve communication and improve efficiency
(5) ) Do things right at one time as much as possible to reduce rework (
6) Strengthen communication
(7) Enhance high-quality resources (
8) Outsource and reduce project scope
.
) Speed up the progress
(2) Use efficient resources to replace inefficient resources to speed up the progress
(3) Improve methods to improve work efficiency
BAC : Completion budget
ETC : A monitoring point predicts how much it will cost to complete the remaining work
Atypical (correction) ETC=BAC-EV
Typical (no correction) ETC=(BAC-EV)/CPI
EAC: Completion estimate AC+ ETC