for job evaluation during planning phase alone (no actual data) you can play with different scenarios all related to:
Duration (working days) X
productivity output (resource units/ duration unit) =
total work volume (resource units) for every resource assigned
(10d X 8MH/d) X 5 workers = 5 X 80 MH = 400 MH
1. you say "you know" 1000 MHs is not enaugh. then you can estimate a value that is more realistic.
that is, provide deterministic budgeted work volume (e.g. Budgeted Labor Units) required to complete the job according to some "recipe" or technological specs per unit of finite product/ piece of deliverable (scope-oriented approach)
use fixed units or fixed units/time as duration type, then assign available resources and adjust productivity output (units/time)
thus
you get the activity duration. optimise if deadline of Dec 31 is exceeded.
2. use fixed duration type and provide desired activity duration to satisfy deadline, assign available resources (number of workers)
and
you get their loading (budgeted units / time). optimise if over-allocations occur.
3.
you can have Primavera estimate the total work volume for you (budgeted resource units) but usually this is the case when:
- no clear recipe is in place (work estimates, bill of quantities etc)
- the budget (in terms of MH, equipment usage, material quantities or corresponding costs) and/or
- the scope of the project are not fixed (project charter, contract, etc)
in other words, the more time and resources you have the more you produce deliverables
to do this select one of the duration types starting with fixed duration & ...
and provide either desired/available duration or resources (no and productivity output).
Primavera calculated budgeted units
sorry for the long post. hope this helps
