Workload without Resources in MS PROJECT–what will happen?–PART 1 of 2

 

Hi,

in this post I will explain what happens when you add resource (recourses) to the Tasks which already has Work assigned in MS PROJECT 2010.

As you know, the magic Formula is WORK = DURATION * UNITS. Let’s see what will happen when wee put the work and the duration for three different task types (fixed units, fixed work and fixed duration). First, as always, setup Smile. In the Gantt chart View I will add the Work Field:

image

in the Detail View I will pick Task Form:

image

when I click on the Task Form I will select:

image

and I will get:

image

No I will put Tasks in the Gantt Chart View:

image

As you can see, for each task I have choose proper Task Type, and all Tasks are Non effort driven (all but Fixed work which is Effort driven by default, and you can’t change it).

Also notice, that I put 12 hours for each Task.

Now I will put two Resources in my Project:

image

I will assign both Resources to Task 1 at once:

image

and I will get:

image

Here is the explanation:

  • Initially I put 12 hours to the Work field
  • I have assign two resources to the Task
  • Since Task is Fixed unit and each Resource has to work 12 hours, and the Formula is Duration = Units * Work => Duration = 100% * 12h = 1,5 day, because by default 100% units mean 8 hours per day.
  • Total work for the Task is 24 hours (12 per each resource)

I will assign both Resources to the Task 2 (fixed Work), and I will get:

image

Here is the explanation:

  • Initially I put 12 hours to the Work field
  • I have assign two resources to the Task
  • Since Task is Fixed work and each Resource has to work 6 hours (6+6 = 12 hours FIXED), Duration = 0,75 days (each resource will work 6 hours per day, and because 1 day = 8 hours, 6/8 = 0,75 days)
  • Total work for the Task is 12 hours (6 per each resource)

I will assign both Resources to the Task 2 (fixed Duration), and I will get:

image

Here is the explanation:

  • Initially I put 12 hours to the Work field
  • I have assign two resources to the Task
  • Since Task is Fixed duration and each Resource has to work 12 hours, and the Formula is Duration = Units * Work it means that each Resource will work 12 hours per day, and that is 150% units (12 / 8 = 150%)
  • Total work for the Task is 24 hours (12 per each resource)

Be careful when you put work BEFORE you assign any Resource to your Task.

But what if I assign only one resource, and then after a while another? What will change?

Read my next Post!

Regards!

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About Nenad Trajkovski

Location: Zagreb, Croatia Occupation: Project Manager Interests: Project Management and MS PROJECT He was born in Zagreb, Croatia at 1963. After completing his college he started working on projects in different business areas (banking, manufacturing, automotive industry, distribution, oil companies, etc.) developing and implementing ERP systems into different companies. He has got a lot of experience working with people in different business processes and also possesses great knowledge in information technologies and financial services. Today he works as a business consultant, adn Project Manager in PERPETUUM MOBILE d.o.o. Zagreb. He is a regular lecturer for Project Management in MS Innovation Center in Varaždin, Logosoft Sarajevo in Bosnia and Herzegovina and SEAVUS GROUP in Skopje Macedonia. He was named the best lecturer of WINDAYS 2008 while his lecture was also voted as the best. In addition, he was in TOP 10 lecturers at the MS SINERGY 2009 and MS VISIA 2009, 2010. Shares first place as the best lecturer of KulenDays 2009 and 2010 and PMI Conference 2009 in Zagreb. He is also a regular lecturer in the MS Community. He is a Certified Accountant and a PMP (Project Manager Professional) and a PMI-RMP (Risk Manager Professional), MCP, MCT, and Microsoft Certified Technical Specialist - Microsoft Project 2010. From 01.01.2012 awarded with MVP (Microsoft Most Valuable Proffesional - Microsoft Project)!
This entry was posted in MICROSOFT PROJECT, Microsoft PRoject 2010, MS PROJECT 2010, PMI, PRoject Management and tagged , , . Bookmark the permalink.

4 Responses to Workload without Resources in MS PROJECT–what will happen?–PART 1 of 2

  1. Ad says:

    Hi, In (fixed Duration) example – “Since Task is Fixed duration and each Resource has to work 12 hours, and the Formula is Duration = Units * Work “.
    Could you kindly advice how formula is duration=units*work instead work=duration *units ??
    Thank you

  2. Prakash Vaidhyanathan says:

    Hi Nenad,
    Good post. The regular practice is

    1. Create WBS
    2. Establish Dependencies
    3. Provide estimates for the tasks
    4. Find critical path
    5. Review schedule
    6. Assign resources
    7. Find resource critical path
    8. Review resource assignment

    Are you suggesting that we should do step 6 before step 3?

    • Nenad Trajkovski says:

      Hi Prakash,

      Here is my opinion! If you do not assign resources to the tasks you have two issues:
      1. You do not know there calendars, availability, working time, etc, so you can not know REAL Critical path
      2. How can you esitmate the duration if you do not know who will perform the work. Some resources are more and some less experienced, ets.

      So, yes, I think that you should do step 6 before step 3, no matter of PMBOK 🙂

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