A project can have more than one critical route, allowing numerous paths to operate concurrently. In truth, the critical path activities are not usually the most significant aspects of the project. At the same time, there will be jobs that are not on the critical path but are nevertheless important to the success of your project. These non-critical jobs may include tasks such as building models, writing documentation, and creating drawings.
The critical path method assumes that all projects must follow a single path from start to finish. However, this is not always the case. Some projects may have multiple critical paths or critical routes. Also, not all activities along the critical path need to be completed in order for the project to succeed. For example, if part of the critical path is taking measurements for construction, but the project requires no engineering design work, then these measurements could be taken now and later applied to other projects or tools. In this case, the engineer would say that taking the measurements was not necessary for this particular project but it still needed to be done. Activities that are not required for any given project may be called optional tasks. Optional tasks may include working with vendors or suppliers to confirm delivery dates, submitting paperwork to government agencies that require it, or conducting training programs for users of the product.
There are several ways that a project can have more than one critical path. One way is if the project has different production schedules that each must be met in order for the project to be successful.
From start to completion, critical path analysis determines the sequence of critical and interdependent stages that compose a work plan. The idea of a critical route acknowledges that the completion of certain activities in a project is contingent on the completion of others. Some actions cannot begin until others are completed. For example, if building a house is your goal, then framing the walls is not possible until the floor is finished or the roof is in place. These types of projects have a critical path because there is no point in starting one stage of construction unless another stage is complete.
In business, the critical path is the last step in a project before it can be completed. If one step on the critical path is delayed too long, the whole project will be pushed back. Projects that use the critical path method include those such as buildings that must be completed in a specific time frame because they are used as offices or stores.
The critical path does not indicate which steps are most important to finish first. Instead, it identifies the last step that can be started without waiting for everything else to be completed. This is why it's also called the 'bottleneck' phase of the project. Once this step is done, the next step can be started.
In general practice, several projects may have their critical paths at different times. For example, if a house needs to be built but no labor is available, it may be necessary to hire outside help.