Construction Project Management
Planning & Scheduling
Bar Charts
Building a CPM Schedule
Networks & Logic
CPM Scheduling
Logic Relationships & Precedence Networks
Progress Updating

Logic Linking Example with Start-to-Start Relationships

Dr. Mubarak elaborates on logic link with an example demonstrating parallel activities with Start-to-Start relationships.

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So, we covered process diagrams as a, you know, method of advanced scheduling or advanced node diagrams and we said it has four types of relationships. What we mentioned is that the Finish-to-Start relationship is used most, Start-to-Start with Finish-to-Finish are used also to represent overlapping activities, sometimes Start-to-Start alone, sometimes Finish-to-Finish alone, sometimes as a combination. The last one we didn't talk about it, the Start-to-Finish, it's, you know, almost never used in the construction. I've never seen it used. Theoretically it means an activity cannot finish until its predecessor has started, but I don't see a practical example for it.

What I want to emphasize is something that real-life situations and there are so many whether we're talking about concrete operations or road operations or road paving operations or utility trenches or vertical construction or painting and whatever it is, you may be able to represent that situation in different methods, whether it's simple Finish-to-Finish, Finish-to-Start relationship or it's an overlapping method like these Start-to-Start with Finish-to-Finish or Start-to-Start alone with lags and so on, just make sure that the method you use is the most appropriate for that situation. And imagine you know, kind of if this one finished first or if this one finished first, make sure you're covered for a...

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