One way to measure the physical completion "Work Load" as you describe, is to use the combination of Physical completion and Steps in P3e. You set up the activty % type as Physical and then use the steps to identify the volumn of works is require for that particular activity. P3e will set up the weighting automatically. Once this activity is schedule you can progress it by updating the quantity in the Step. The % comp will be calculated automatically, since your resource and cost is already identified in the Resource you can link your cost with progress if desireable.

No, it is not easy if you want to assign materials to a resource (gas to a car, electricity to a crane, etc.).

I understood the question differently, maybe the term workload was not used correctly, maybe I did not understood the question properly. I understood that Rahmat asked if you can assign materials to activities, basing on their quantitative characteristics, that was called workloads. We use this approach defining activity volumes in meters, tons or other physical units and then applying databases with the norms of material consumptions per one volume unit.

Maybe Rahmat will clarify his question?

Best Regards,
Vladimir

The best workaround is use the V4.0 release, which support materials as resource