FastTrack Schedule (32) Flashcards
This set entered on 11-9-14. 6.12.14.1 UNDERSTANDING LEAD AND LAG TIME 1. What is LAG?
Lag: A unit of duration used as a delay between two tasks. Lag durations are entered as positive values. An example of this could be the predecessor task of pouring concrete prior to the successor task of building a house. If the concrete takes 2 days to cure and dry, the dependency link would require a lag of 2 days.
- What is LEAD?
Lead: A unit of duration used to provide an overlap, or “head-start”, between two linked tasks. Lead durations are entered as negative values. Drywall on first floor can start while framing is still going on on the second floor.
- How do you set LAG/LEAD TIME?
INFORMATION FORM: BARS: LINKS: LAG/LEAD and make your choices.
- How do you LINK bars in CALENDAR VIEW?
YOU CANNOT. Bars can ONLY BE LINKED IN SCHEDULE VIEW.
- Linking ACTIVITY BARS creates:
a DEPENDENCY from a point on one bar the PREDECESSOR) to a point on a second bar (the SUCCESSOR).
- This “DEPENDENCY” illustrates:
the RELATIONSHIP that the DATES ON ONE TASK HAVE TO ANOTHER.
- Example of a FINISH TO START Relationship:
Drywall cannot start until MECHANICAL ROUGH is complete.
- How do you LINK bars?
TOOLS controls: BAR LINK tool. Click the FINISH or START of one bar and DRAG to the START or FINISH of a second bar. A second option is to use the INFORMATION FORM.