As of late, collaborative planning has fallen by the wayside when it comes to project planning and scheduling. But collaborative, network-based planning can be resurrected by utilizing a Logic Diagramming Method (LDM) approach.
By taking advantage of the LDM’s ability to combine the strengths of both Arrow Diagramming Method (ADM) and Precedence Diagramming Method (PDM) in a unified diagramming technique, schedulers and project managers can bring planning back to the forefront of project scheduling.
The Casualty of Collaborative Planning
Industry experts agree that collaborative planning has become a casualty of Critical Path Method (CPM) programs and scheduling for a variety of reasons, including these:
- Fewer people use logic or arrow diagrams. The method of using arrows of non-scaled lengths to denote activities, then connecting related activities at common nodes to denote finish-to-start relationships is no longer popular.
- The personal computer. Now, savvy CPM schedulers can take scheduling shortcuts with very little planning.
- Manual calculation for PDM is often impractical. Especially in the field. So many people default to ADM, which is easily calculated.
- Difficulty in time-scaling PDM. As a result, schedulers rarely use PDM and communication issues increase.
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Facilitating Collaborative Project Planning
LDM combines the best practices of ADM and PDM. An LDM activity model creates an arrow diagram that accepts ADM and PDM logic: finish-to-start (FS), start-to-start (SS), finish-to-finish (FF), and start-to-finish (SF). Additionally, common nodes or a vertical link, depending on the relationship, connect activity relationships within the model.
Simply put, LDM modifies ADM notation by using a link to convey a PDM relationship within a time-scaled framework. And implementing LDM is no more complicated than independently using a PDM or ADM process.
The visual workflow that LDM creates is easier to interpret and understand than the oft-used box or circle diagrams, or annotated bar charts. The simplified appearance of the LDM model helps people visualize the progress of the project. All finish-to-start related activities are represented as a continuous end-to-end chain rather than a cascading bar chart.
Bringing Planning Back into Time Management
The advantages of using LDM are multi-fold. The method creates a simple user-controlled arrow diagram that extends ADM, while offering the flexibility of PDM without the complexity of having to learn its four relationship types. LDM also reintroduces planning into the scheduling process by consolidating planning and scheduling onto the same time-scaled calendar of an evolving schedule.
Planning on a single, time-scaled calendar can yield more efficient results and allows spontaneous evolution of activities, tasks and deadlines. Additionally, when combined with the Graphical Planning Method (GPM), LDM lends itself to a collaborative, stakeholder-driven process with immediate feedback. This can be used to fine-tune plans to meet goals and milestones.
The GPM-calculated LPM approach creates a renewed opportunity for joint planning among stakeholders. It opens the door for true-collaborative planning to become a top priority for schedulers and project managers, instead of a secondary tool often used for schedule manipulation.
The transparency and user-friendliness of LDM, particularly GPM-calculated LDM, allows schedulers and project planners to develop well-coordinated, workable schedules that align with project realities and are easily accessible and universally usable.