What is the difference between lag and slack

What is the maximum float for an activity? What is the indication of too much float on a project? How to determine the timing of activities and the total float when using a network diagram? Send feedback Privacy Policy. The actual values are the same for all sets of assumptions.

The Searle code allows you to pick which tasks are included in the PERT set and the output tables compute probability and standard deviations. But, with three times the amount of information, it is certainly more work.

You can view Searle's presentation, which was very well done, at this location:. I'd like to accept your offer for both code and excel templates. E-mail address is normandohtgoldsmithahtsridohtcom, with the obvious substitutions including an extra h. BTW the Searle presentation also deals separately with how to establish and control project time buffers.

Some of the suggestions may work for you. Actually, I like to add a "float pool" to my projects. Our processes are highly variable, so you never know which one will have slippage.. Choose where you want to search below Search Search the Community. Pug McThug. Hi folks, I've often enough made the mistake of scheduling task successor tasks right on the tail end of their predecessor tasks, and I'm trying to decide whether I should add lag between the tasks, or if I should rather work with slack.

With which technique have you had the best results? This however has a disadvantage: the slack is by definition 0. This thread is locked. You can follow the question or vote as helpful, but you cannot reply to this thread. I have the same question 0.

Like this: Like Loading Comments Cancel reply Enter your comment here Fill in your details below or click an icon to log in:. Email Address never made public. Follow Following. Sign me up. Already have a WordPress. The process of schedule development includes: identification of all activities, sequencing all activities based on dependency, estimating duration of each activity and finalizing the schedule.

Leads, lags and float are used as part of activity sequencing process. All activities once sequenced will form a schedule network diagram. Let us first look at the definition of all these three attributes. Float also known as slack is the amount of time by which the start of an activity can be delayed without delaying the project completion time.

Every task will have following set of start and finish time.