Glossary - Construction Project Scheduling and Control - page 469

Glossary
3D Modeling —The digital representations of building components and facilities in
terms of spatial dimensions (width, length, and depth) and object information.
4D Modeling —A visualization method that incorporates 3D models with time
associations.
5D Modeling —The integration of 3D models of projects with cost and time
associations.
nD Modeling —The integration of 3D models of projects with several dimensions
(attributes) of the design elements such as cost, time, energy performance,
carbon footprint, structural analysis, whole life cost, whole life performance,
location (GIS), and/or specifications.
Accelerated Schedule —A schedule that is usually submitted by the contractor,
implementing adjustments to the original project schedule to accelerate the
completion date, without changing the project scope, in order to meet the
contract/owner's stipulated finish date, achieve financial gains, and/or avoid
losses.
Accelerating a Project —See schedule compression .
Acquisition —The obtaining of supplies, services, or property to meet the needs of a
project. Also see Procurement .
Act of God —See Force Majeure .
Activity —A basic unit of work as part of the total project that is easily measured and
controlled. It is time- and resource-consuming. Also called Task .
Activity Description —A short phrase or label that is used in a project schedule
describing the type of work in the activity. In many cases, it also references the
location of work and/or other information pertaining to the work in the activity
(e.g., “Concrete placement, suspended slab, 16th floor”).
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