Schedule Quality
BEI (Baseline Execution Index)
BEI measures execution against plan: of all the activities the baseline expected to be finished by today's data date, what fraction actually are.
Definition
BEI is a straightforward ratio: take every activity the baseline schedule expected to have finished by the current update's data date, and divide the number that have actually finished by that total. A BEI of 1.0 means the project is finishing activities at exactly the rate the baseline assumed; below 1.0 means completions are falling behind baseline expectations. Unlike most of the other 13 DCMA checks, BEI isn't float-based -- it's a raw execution-rate measure, which makes it useful precisely because it can surface a productivity problem that float and critical-path metrics alone can miss. A contractor can point to a BEI at or above 1.0 as objective evidence of diligent execution, countering an allegation of slow performance; an owner can point to a falling BEI as evidence of a productivity shortfall independent of any single delay event.
Example
As of the current data date, the baseline expected 340 activities to be complete. Only 289 actually are: BEI = 289 / 340 = 0.85, meaning the project is completing activities at 85% of the rate the baseline called for.