Glossary - Construction Project Scheduling and Control - page 491

Submittal —A sample, manufacturer's data, shop drawing, or other such item
submitted to the owner or the design professional by the contractor for approval
or other action, usually a requirement of the contract documents.
Subschedule —Generally, a subschedule is portion of a larger schedule based on
certain criteria, such as responsibility, area, phase, period of time, and so on. It is
a common practice to refer to the schedule reflecting the work of one
subcontractor or other single participant in the project as a subschedule. A
subschedule may have starting date, completion date, and/or duration that is
usually different from the Master Schedule .
Substantial Completion —The point in time when the project is ready for use by
the owner for the purpose intended and is so certified. See Certificate of
Substantial Completion .
Successor Activity —An activity that cannot start (or finish) until another activity
(predecessor) has finished (or started).
Summary Schedule —A schedule (usually Bar Chart ) in which activities are
summarized (combined) by a certain criterion, such as responsibility, phase, or
area. If Work Breakdown Structure (WBS) is used, it is possible to summarize
(roll up) the schedule at any level higher than the individual activity. Summary
schedules are usually used to inform upper management about the overall
project situation without providing too much detail.
Sunk Cost —A cost already incurred that cannot be avoided even if the project is
terminated. It cannot be recovered, regardless of future events.
Target Schedule —See Baseline Schedule .
Task —See Activity .
Time Contingency —See Schedule Contingency .
Time Plus Cost Contracting Method —See A + B Contracting Method .
Time Ratio —A method of measuring percent complete for an activity (or a project)
by dividing the actual duration by the total duration. This method works well
for activities with uniform work over its duration. The method also has a variety
of ways of making calculations, mainly using actual or planned durations.
Time-Scaled Logic Diagrams (or Bar Charts with Relationships) —A bar chart
with logic relationships (all or driving) depicted.
Total Float (TF) —The maximum amount of time an activity can be delayed from
its early start without delaying the entire project and without violating a
schedule constraint.
Turn-Key Project —A project in which a builder/developer contracts to construct a
completed facility that includes all items necessary for use and occupancy. All
that is required of the buyer to begin using the facility is to turn a key in the new
door's lock and enter (Source: http://www.teachmefinance.com/). The term
turn-key does not indicate a specific contracting or delivery method, but in most
cases, it implies a design-build (DB) contract.
Units Completed —A method of measuring percent complete for an activity that is
made up of small, similar, and repetitive units of work. Percent complete =
Units completed/Total units. This method can be applied to the entire project if