Triple Constraints of Project Management
Triple Constraint is a model of constraints of a project. These are areas where changes are typically introduces into a project. Balancing of these constraints through change control process is the key of a successful project. All three constraints should be treated at equal importance. These three are the most significant attributes of a project.
Project Manager is the one he should juggle all theses to keep balance.
Triple Constraints of Project Management | Explanation with Example
There are four components of Triple Constraints that is time, scope, Coat & “quality.” For ease to remember Time, Cost & Scope (TCS).
Time is talking about the schedule, cost about budget and scope about quality of deliverables. Quality of scope is also a crucial part of project.
Triple Constraints Triangle | A different Approach
As you know the sum of triangle angles is 180 degree. It means if you increase an angle the other two or at least one will decrease to keep the balance to make it 180 again. Same way if you increase the scope then the cost should be increased and so does the scope. Vice versa, if you cut the cost you will get less scope and it may also affect the time & quality – That sadly happens in most of the projects now a days.
All the stakeholders must understand the application of Project Management rules to get optimism results.
Practical Example to Understand Triple Constraints
Let say you are building a house and you want to decrease the cost then you need to cut the scope or increase the time to get it done in longer run.
Same way if you want to complete it in a shorter time (Crashing) then you need to increase the cost that is called acceleration cost. In this way you need to give overtime to get labor in long shifts.
If you could fix the cost & time and keep scope (No Gold Plating or Creep) then you will get a good quality deliverable.
BUT, if you try to play with any of side of the triangle then you may get a deliverable that is not up to the requirement in & may face rejection from end user.
A better understanding for quality is if you get a labor on cheaper rates to reduce the cost then you ultimately will get a poor-quality deliverable.
As a Project manager it is your duty to keep balance of all the components of triple constraints to avoid any hiccup to the final completion of the project.
The priority of any Constraints (Cost, time, Scope) is prioritized by the Client or its representative. One must not play with any of the side until unless it’s from Client or higher authorities consent. This also helps to avoid Scope Creep or any Gold Plating as if you go for then you may lose focus on any significant attribute.
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Note: PMI has extended its approach and you must need to read them here The Value Triple Constraint (VTC)
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