Jacobs Method

The Jacobs Method is a project scheduling technique used to calculate activity start and finish times, with a strong focus on handling resource constraints. Unlike traditional Critical Path Method (CPM), which primarily considers task durations and dependencies, the Jacobs Method integrates both task precedence and resource availability into the calculation.

At its core, the method ensures that project schedules are realistic, not only in terms of sequence but also in terms of whether the right people, skills, or equipment are available when needed. This makes it especially useful for projects with limited or shared resources.

Key aspects of the Jacobs Method include:

• Activity sequencing – Defines the logical order of tasks, similar to CPM.
• Resource loading – Evaluates which resources are required for each task and whether they are available.
• Schedule adjustment – If resources are over-allocated, the method adjusts activity start dates until a feasible schedule is created.
• Time analysis – Provides more accurate estimates for project duration, since resource constraints are factored in.

For example, if two tasks are scheduled to run in parallel but require the same specialist, the Jacobs Method will adjust one of the tasks to start later, ensuring resources aren’t double-booked.

The result is a resource-feasible project schedule that reduces unrealistic timelines and improves planning accuracy.