Mobilization
The setup work at the very start of a project, such as bringing in temporary facilities, fencing the site, setting up equipment laydown areas, and getting crews and materials in place, before any actual construction work begins.
Why it matters
A project that starts building before it's properly mobilized runs into chaos fast: no place to store materials, no site safety plan in place, crews with nowhere to park. Mobilization is what turns an empty lot into a functioning jobsite.
On a real project
Before framing starts on a new building, the contractor sets up a site trailer, fences the perimeter, installs temporary power, and designates where delivery trucks will stage materials.
Who this matters most to
A Superintendent typically runs mobilization directly, since it's one of the first real tests of whether they've thought through how the whole site is going to function once work actually starts. A Project Manager cares because a slow or disorganized mobilization eats into the schedule before a single wall goes up.
Where this goes wrong
A crew shows up ready to start excavation, but the site was never properly fenced or graded for equipment access, and the first two days of the schedule burn away just getting the site into a workable state, days that were never built into the schedule because mobilization was assumed to be instant.