This lesson covers sequence activities. This is the process of placing the activities in order and creates the Project Schedule Network Diagrams. The following factors determine the sequence of activities:
[toggle_content title="Transcript"] The next process in time management is sequence activities. This process is focused on placing activities in order. If you remember the previous process, it was determining what those activities are. Now we are going to start arranging them. This process creates the project schedule network diagram. The key inputs are the schedule management plan, the activity list, the milestone list; which were just created from the previous process, activity attributes, enterprise environmental factors, and organizational process assets. A project manager will use precedence diagramming methods to do this. Dependency determination and leads and lags to develop this project schedule network diagrams. If you look at the inputs, you have the schedule management plan, remember that's the first that we did in the time knowledge management area. This establishes the rules on how we are going to proceed forward with all those further procedures, processes. The activity list and the milestone list we just created from the previous process, and then once again we have enterprise environmental factors and organization process assets. How is that company culture and creating the sequence and does the company have any templates or anything to accomplish those tasks. With the precedence diagramming method, we are going to look at that next. Dependency determination is figuring out what needs to be done in what order. We will look at that couple of sides from now and knowing what leads to [inaudible] we are going to go over that in detail. The precedence diagramming method; so basically you're creating boxes. I created dependencies saying that I am going to design the dark house first and then after that I can purchase material and dig foundation. Once these two things are done, these are dependencies; I can then pour the concrete. After I pour the concrete, I can do two things at once. I can build the dark house and I can start fencing. Once those two things are done, I can train the dog. When sequencing dependencies, we determine the order of activities. You have mandatory and discretionary. What is the difference between mandatory and discretionary? Mandatory has to happen. There is no if about it. If am going to paint a wall, I have to prime it before I apply paint. That is mandatory. Discretionary is we like do it in this order but it's not mandatory. Then there is internal and external. Internal, means it's dependency that was decided within your organization. External is it is outside your organization. If I am in construction, an external dependency is me going out and seeking a permit from the government to put up a wall or install electrical. Predecessors, they are used for helping sequencing activities. They determine when the activity will occur. There's formula now, there is finish the start, finish the finish, start the start and start the finish. An easy way of determining this is by writing the two tasks. On the tasks, I would write a box with A and B in there. In the left side, I would put start and start, finish and finish. The task might ask you; look at this box or these two boxes. What is it? We will look at finish to start first. Finish means A has to finish before B can start. By knowing that this is the finish, I am drawing an arrow like this so A needs to finish before B can start. What if I need two tasks to start at the same time? That's called finish to finish. I am drawing an arrow from A to the end of B just looking at the words "finish to finish" I can determine that. Start to start; I am drawing an arrow from the start of one box to the start of the next. Start the finish, I am starting this task when this task ends. Leads and lags; leads can start before an activity is complete. In this example, I am showing A and B. A is Monday Tuesday, Wednesday, Thursday. Now they are in sequence or order, B which starts on Friday. I am starting B one day early. As A is about to finish I can start B also on Thursday rather than starting B on Friday. That is known as a lead. A lag requires a delay before the activity can start. Rather than starting B on Friday, I want to start on Saturday. Good example of a lag would be going back to painting. If I have to wait for that paint to dry, I am going to have a lag of say one day. Rather than have whatever activity it is this week, I have to wait one day, so am lagging by one day before B can start. [/toggle_content]
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