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The project management triangle (called also the triple constraint, iron triangle and project triangle) is a model of the constraints of project management. While its origins are unclear, it has been used since at least the 1950s. [1] It contends that: The quality of work is constrained by the project's budget, deadlines and scope (features).
Quality, cost, delivery (QCD), sometimes expanded to quality, cost, delivery, morale, safety (QCDMS), [1] is a management approach originally developed by the British automotive industry. [2] QCD assess different components of the production process and provides feedback in the form of facts and figures that help managers make logical decisions.
The project management triangle. Barnes' contribution to the civil engineering profession is considered immense, [4] especially for his invention of the classic Time/Cost/Quality triangle – known variously as the project management triangle, Iron Triangle or 'Barnes Triangle'. He himself considered that "this was a very significant step in ...
Common among all the project management types is that they focus on three important goals: time, quality, and cost. Successful projects are completed on schedule, within budget, and according to previously agreed quality standards i.e. meeting the Iron Triangle or Triple Constraint in order for projects to be considered a success or failure. [21]
Figure 2: Measuring schedule performance without knowledge of actual cost Figure 3: Measuring cost performance without a PV baseline Figure 4: The most common form of EVM graphic. It is helpful to see an example of project tracking that does not include earned value performance management.
Cost engineering – is the area of engineering practice where engineering judgment and experience are used in the application of scientific principles and techniques to problems of cost estimating, cost control, business planning and management science, profitability analysis, project management, and planning and scheduling." [8]
In project management, a schedule is a listing of a project's milestones, activities, and deliverables. Usually dependencies and resources are defined for each task, then start and finish dates are estimated from the resource allocation , budget , task duration , and scheduled events.
These costs are seen as an equally important parameter besides feature scope and schedule, the three taken together yielding the well-known project triangle. By taking the right design decisions as early as during the initiation and concept phase of the product life-cycle , unnecessary costs at later stages can be avoided.