Dear Family Members
What is the maximum and minimum Lag allowed in a program??
What is the maximum Activity duration can be allowed in a program??
What is the maximum and total float allowed in a program ??
Regards
Arun.V
Lag ,Total Float and Duration
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There are no such thing as a universal rules for planning, the rules shall be used only as a guide/warning on possible errors but not to define them as definitive error. Some of these rules might prevent you from creating better models.
Say concrete placing activity takes 6 hours but curing shall start after the 4th hour; there is a necessary lag that is more than 50% the duration of predecessor. You can bypass such 50% requirement if model lag as an activity.
Say an activity takes 3 months, common in linear jobs; if you split the activity into separate activities then resource leveling might spread them apart instead of keeping the activity contiguous.
Float is a calculation, if the software can do the right calculation and the model is good it will be whatever it comes to be.
Hi Arun,
1. For SS+ Lag, the lag should not be more than half of the predecessor duration. Always try to avoid FS+Lag.
2. Try to limit the construction activities in 21 days, to monitor & control it properly.
3. Total Float depends on the proper logic in the programme.
BR
Kannan