Sunday, May 20, 2012

CPM Concept-2

Total Float: The total amount of time that a schedule activity may be delayed from its early start date without delaying the project finish date, or violating a schedule constraint.

Free Float: The amount of time that a schedule activity can be delayed without delaying the early start date of any immediately following schedule activities.

 Free float can only occur when two or more activities share a common successor, or in other words, when activities converge on a Network Diagram.

Q.        Who owns total float & free float?
Ans.     Total Float belongs to the project, whereas Free Float belongs to individual activities. If the project is being done under a contract, it's debatable whether Float belongs to the buyer or seller.
In either case, 'Float' is a project resource. It should be used judiciously, mainly to cover the risks or other unforeseen issues on the project
Free Float shows you how much flexibility you have in terms of both time (spread between early and late date S curve horizontally) and in terms of resources (the spread vertically between the early data and late date S curves).

 Q.   How free flot's partisan take place?
Ans.    From a claims (legal precedent) perspective, unless otherwise stated in the contract, float is generally considered to be owned 50% by the owner and 50% by the prime contractor. However, the 50% owned by the prime contractor is also split between his/her subs and vendors.

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