The process of dividing the design of a project into phases in such a manner as to permit construction to start before the entire design phase is complete. The overlapping of the construction phase with the design phase.

An order issued at the site by the owner or construction manager to clarify and/or require the contractor(s) to perform work not included in the contract documents. A field order normally represents a minor change not involving a change in contract price or time and may or may not be the basis of a change order.

The date on which the terms of all construction contracts have been satisfied.

Contingency time that exists on a schedule of activities. It is measured by comparing the early and late dates on a start and finish basis.