In general, a table saw requires at least eight feet in front and behind to accommodate standard sheet goods and four feet side to side. A work table should provide four feet clearance on all sides, and pathways between tables, benches and storage units should be three feet wide. Proper clearance will allow you to move about with ease while you work.
Let’s be clear about one thing: No workshop is perfect for everyone. If there were, I could simply give you a precise plan to follow with clear dimensions. Every person who comes to the hobby, avocation, or profession of woodworking has his own particular collection of tools and his own peculiar work style, skills, and desires for the kind of woodworking he wants to do that gives him a unique approach as to how he will lay out a shop: where the tools should go, where lumber and supplies are stored, and how much bench area he needs.