"Scheduling and Coordinating Subs" is lesson 6 of 7 in the General Building (B) Learning Hub. It opens with "Sequential vs. Overlapping Work" and works through 5 short steps, then a worked example you can check yourself against.
One-time purchase, no subscription. Law & Business included.
The worked example in the course applies this lesson to a realistic job in 5 steps, from "Add the phases together" through "Convert to a finish date".
Some trades MUST happen strictly in order (rough electrical and plumbing have to finish before drywall closes the walls up) - that's sequential work, and their durations simply add together. Other trades can run in parallel once their own prerequisites are met (electrical rough-in and plumbing rough-in can often happen at the same time, both after framing) - that's overlapping work, and only the LONGER of the two adds to the schedule, not both.
For strictly sequential trades, add up every trade's duration in working days, then count that many working days forward from the start date (skipping weekends, or whatever days aren't worked) to land on the finish date.
When two or more trades run at the same time inside the same window, that window's length in the schedule is set by whichever trade takes longest - not by adding all of them together. Finishing the shorter trades early doesn't shrink the schedule; only the longest parallel task does.
The remaining 2 steps, the worked example and the quiz are in the course. This is a preview. The full lesson, with the step-by-step explanations, a worked example and a quick-check quiz, is inside the classroom.
Try the real classroom free, no sign-up, or get the full course for your trade.
Independent exam preparation. Contractors Classroom is not affiliated with the Contractors State License Board, and no course can guarantee a passing result.
