Task Relationships

There are four different task dependencies (relationships):

Finish to Start (FS): The finish date of predecessor task determines the start date of the successor task

Start to Start (SS): The start date of the predecessor task determines the start date of the successor task

Finish to Finish (FF): The finish date of the predecessor task determines the finish date of the successor task

Start to Finish (SF): The start date of the predecessor task determines the finish date of the successor task

When you link two tasks then the default relationship is Finish to start.

I will now add five tasks and assign a predecessor to Task 2,3,4 and 5 (default: FS):

image

Now I will change the type of relationship between Task 3 and Task 2.

image

and I will get:

image

You can see that the Start Date of Task 3 is now the same as a Start date of Task 2, and the End date of Task 3 changed accordingly. And in the Predecessor field of Task 3 you will find 2SS (which means: Task 3 has Task 2 as predecessor, and the relationship is SS – Start to Start)

Now I will change the relationship between Task 3 and Task 4 in the same way, but I will establish Finish to Finish Relationship instead. And I will get:

image

You can see that the End Date of Task 4 is now the same as the End date of Task 3, and the Start date of Task 4 changed accordingly. And in the Predecessor field of Task 4 you will find 3FF (which means: Task 4 has Task 3 as predecessor, and the relationship is FF – Finish to Finish)

Now I will change the relationship between Task 4 and Task 5 in the same way, but I will establish Start to Finish Relationship instead. Notice that project start date is Monday, 02.05.2011 (this is Start date of Task 1). When I choose Start to Finish relationship and I click the OK button I will get:

image

MS Project warns me that if I choose Start to Finish relationship Task 5 will be moved to start date 25.04.2011 which is earlier than project start date (02.05.2011). This happens because in Start to Finish relationship Start date of Task 4 is Finish date of Task 5. Start date of Task 4 is 02.05.2011 and because Finish date of Task 5 is the same and the duration of the Task 5 is 5 days, Start date of Task 5 must be moved 5 days earlier than 02.05.2011 which is 25.04.2011 and it is before the Project start date (02.05.2011). I will choose OK and I will get:

image

 

See you,

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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 2010, PMI, PRoject Management and tagged , , , , . Bookmark the permalink.

8 Responses to Task Relationships

  1. Sian says:

    Hi how to adjust start and end dates if single task has multiple predecessor with different relationship types. Please assit

    • Nenad Trajkovski says:

      can you be more specific. what do you want to do with which task? Give me an example of what do you want to achieve

  2. Mr. Mohammad Joynal Abedin says:

    hi i want to know that what is the default task relationship in ms project? can pls anyone help me to ans. thanks

  3. TJ says:

    Hi,
    I’m trying to create a new schedule for 1 person. I’d like to find a way to use automatic scheduling that will fill the day and spread the task without spreading it in a crazy way.

    For example, if I have a 1 hour recurring meeting every day, and a task that will take 24 hours, I’d like it to schedule the task to finish as soon as possible, with a break down of 7/7/7/3. Instead, it overallocates and does 9/9/9.

    Are there any settings I can use to make it limit the allocation to 8 hours per day?

    Thanks for your help.

    • Nenad Trajkovski says:

      Hi,
      I will give you the options in my next blog. I think I will post it tomorrow, 05/17/2011.
      Best Regards!

      • Nenad Trajkovski says:

        Sorry, I am going to write my blog now, and I will post it tomorrow! Hope that is not too late for you!
        Regards,
        Nenad

    • Nenad Trajkovski says:

      I posted my new blog. Hope it would be helpful 🙂

      Regards,

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