Glossary - Construction Project Scheduling and Control - page 478

Earned Value Management (EVM) —A method of integrating scope, schedule,
and budget to measure a project's performance. It compares the amount of
work that was planned with what was actually earned and with what was actually
spent to determine if the cost and schedule performance are as planned.
Effort-Driven Activity —See Resource-Driven Activity .
End-of-Day Convention —A convention adopted by most scheduling topics
assuming that when a day (date) is mentioned, it implies the end of that day. An
end of a day is equivalent to the beginning of the next day. For this reason,
network calculations start on day 0 (i.e., end of day 0), which practically means
the beginning of day 1. Using this convention, the duration of an activity is
equal to the difference between its finish date and its start date.
Estimate at Completion (EAC) —The expected total cost of an activity or project
when the defined scope of work is completed. EAC = Actual Cost ( AC )+
Estimate to Complete ( ETC ) .

Estimate-Generated Schedule —A list of project activities along with their
durations, generated by the cost estimating software. The list does not form a
CPM schedule because it lacks logic links (relationships) and other schedule
attributes. It may help form the foundation of a schedule.
Estimate to Complete (ETC) —The projected cost to complete the activity or
project from its present state.
Event —A point in time marking a start or end of an activity. Contrary to an activity,
an event does not consume time or resources, and while statusing (updating) a
project, an event can be statused as “not started” or “complete” but not “in
progress.” In computer software, events with significance can be created as
“milestones,” and they are either “start milestones,” such as “notice to
proceed,” or “finish milestones,” such as “substantial completion.”
Exculpatory Clauses —Disclaimer verbiage that is designed to shift risk.
Excusable Delay —A delay that entitles the contractor to additional time for
completing the contract work. Excusable delays usually stem from reasons
beyond the contractor's control.
Exemplary Damages —See Punitive Damages .
Expected Duration — The expected duration of an activity is the duration an
activity is expected to take (in PERT calculations), taking into account the
different possible values (optimistic, most likely, and pessimistic durations) and
their weights. It is the mean (mathematical average) duration and is calculated
using the following equation:

T o + 4 T m + T p
6

T e =

which is a form of the general equation:

n
∑

μ= 1
n

x i

i =1