The Triple Constraints of Projects: Quality, Cost and Schedule The Triple Constraint The challenge of every project is to make it work and be successful within the Triple Constraint ; the Triple Constraint being quality scopecost resources and schedule time. These three elements of a project are known to work in tandem with one another. There is a balancing of the three elements that only when fully understood by the Project Manager, allows for the successful planning, resourcing and execution of a project.
As a Project Manager, you must know about Lead Time and Lag Time in order to better understand your project plan and execute it accordingly.
Although this concept is not very difficult, a few people still find it difficult to understand. Okay, let us get started. Usually, when the first activity finishes, a second activity starts. This type of activity sequence is called Finish to Start and it happens the majority of the time.
However, there are many instances when other situations arise; e. These two situations are termed as Lead and Lag. Lead Time When the first activity is still running and second activity starts, this is called Lead.
The balance of time for the first activity is known as Lead Time. Lead Time is the overlap between the first and second activity. For example, let us say that the time duration for the first activity is 20 days, and for the second activity it is 15 days.
As the first activity completes its first 15 days, you start working on the second activity. Please note that the first activity still has 5 days to finish itself completely. Let us take a real-world example. However, as you complete the electrical work of ground floor, you start painting it while the electrical work for the first floor continues.
Lag Time When the first activity completes, if there is then a delay or wait period before the second activity starts, this is called lag and the delay is known as the Lag Time.
Lag Time is the delay between the first and second activity. For example, the time duration for the first activity is 3 days, and for the second activity it is 2 days. After completing the first activity you wait for one day, and then you start the second activity. Please note that here you start second activity after one day of completing the first activity.
In this case, we say that Lag Time is one day, or Finish to Start activity with one day delay or lag. Suppose you have to paint a newly constructed room.
The first activity would be applying the primer coating and then you will go for the final painting. However, after applying the primer coating, you must give it some time to dry properly.
Once the primer coating dries, you can start your final painting. The time given for coating to dry itself is called the lag time. This is where this blog post about lead and lag time finishes. I hope that you enjoyed reading it. Feel free to posts your thoughts and questions through the comments section below.) If the project scope is increased, what are the likely steps that the project manager would take with regards to the other triple constraints?
Why? (15 points) b) If the project schedule is relaxed or lengthened, what is the impact on quality? As a Project Manager, you must know about the Lead Time and Lag time in order to better understand your project plan and execute it accordingly.
Lead Time and Lag Time in Project Scheduling Network Diagram. By Fahad Usmani 76 Comments. This is inbuilt in schedule. While developing the schedule you define it. Reply. Tope says. . If the project schedule is relaxed or lengthened, what is the impact on, Hire Operation Management Expert, Ask Management Studies Expert, Assignment Help, Homework Help, Textbooks Solutions.
B) If a project schedule is relaxed or lengthened the impact of quality could add additional costs, a change in schedule as well as a budget increase.
Initially one might think that a shortened scheduled would lead to careless work that gets less attention and quality control. However, SOME projects will allow you to add resources or purchase a faster piece of equipment to allow the work to be performed quicker at the same level of quality.
A project is defined by its scope, schedule and budget. If one of these three are changed, the other two are affected. B) If a project schedule is relaxed or lengthened the impact of quality could add additional costs, a change in schedule as well as a budget increase.