A utility provider's design review runs ten days long. The contractor reports a ten-day delay. On paper, the project is ten days behind. In a northern market in October, it may be much further behind, because those ten days can push underground work into winter, where it is slower, more expensive and in many places restricted until spring.
Two different numbers
Days added is what the event itself cost: the length of the review, the late delivery, the failed test. Days out is how far the finish moved because of it. When the delayed work sits on the critical path and runs into a window that closes, days out can be many times days added. When there is float to absorb it, days out can be zero.
Record every delay, the same way
Every delay should be recorded when it happens, not reconstructed at the end of the job. Four facts each time:
- The cause, and who controls it: the contractor, the owner, a utility, an agency or the weather
- The float it consumed
- The days it added
- What it cost, and what it moved the finish to
A record kept this way narrows disputes before they start, prices change orders against facts, and shows the owner which risks are worth paying to protect.
Evidence that expires
Some proof only exists for a few days. Underground utilities, bedding and anything that gets covered can be photographed only before it is buried, and compaction is proven by test reports taken as the work is placed. Fixed cameras, drone flights and 360 capture on a set cadence, alongside those reports, create a record of what was in place and when, which is what a claim, a draw or a dispute eventually depends on.
Protect the windows first
Schedules for northern projects should be set against the construction season, with the work that is hardest and costliest in winter protected first. When something slips, the first question is not how many days it added. It is which window it threatens.
General information, not legal, engineering or investment advice. Approval requirements vary by jurisdiction.