there is not a "formula", but in general the efficiency (or performance) decrease exponentially (not linear), and the cost is increased exponentially.
This is due several factors:
overtime (man-hours) are more expensive
overtime has a natural loss of efficiency (for human resources)
additional shifts (night shifts) have the same problems (above)
contribution of additional resources (people) finally is inefficient (due the "decreasing performance law). In fact, too much additional resources will block the progress
additional incentive payments will be requested
additional supervision is required
If your problem is to recover a delay or just to decrease the total time (through the critical path), the are 2 options: fast track or crashing time.
For details, see PMBOK or other (exists a large literature).
Regards
(note: the picture is not mine, but it is a classical)
Member for
21 years 8 monthsTake a look at the following
Take a look at the following links.
Good Luck
Member for
14 years 7 monthsHi Sonya: there is not a
Hi Sonya:
there is not a "formula", but in general the efficiency (or performance) decrease exponentially (not linear), and the cost is increased exponentially.
This is due several factors:
If your problem is to recover a delay or just to decrease the total time (through the critical path), the are 2 options: fast track or crashing time.
For details, see PMBOK or other (exists a large literature).
Regards
(note: the picture is not mine, but it is a classical)
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