ESTIMATE ACTIVITY DURATIONS WINDOWS

In this case, determine the difference in materials and/or workmanship and figure out the difference in resources, cost, and time. The activity is for a slightly different end product.Or the foundation requires removal of rock instead of clay. For example, the slightly bigger roof trusses might require the next larger size of crane. There is usually a high potential for project overruns by missing a specialty item. In this case, add in the appropriate products and services and proceed as usual. The activity needs specialty products or services that the previous one didn’t.You have to make sure you include enough contingencies for the little things. This might sound obvious but it’s never the big, obvious things that cause problems for project managers.

ESTIMATE ACTIVITY DURATIONS WINDOWS

For example, the log house has slightly more square footage, or the sidewalk is longer, or several more windows have been added. In this case, scale the duration up or down by the appropriate amount. The activity is bigger or smaller than the last one.Here is a checklist of potential adjustments: In fact, many organizations have similar projects, and this is the natural starting point.

This is the best source of information because actual work completed is extremely reliable, even if it needs adjustments.

There are three ways to estimate an activity duration:Īs the name suggests, this is when you make an analogy to the same, or similar, activity that has been performed before. These durations are used to construct the project schedule. Once the project has been divided into activities and resources assigned to those activities, the next step is to determine the activity durations. Therefore, project planning needs to make sure that enough time is assigned to each task. Like the tiny O-rings that brought down the space shuttle Challenger, one small underestimation often results in a chain reaction that the project can’t recover from.

Estimate activity durations