If you're thinking about building new tool storage or expanding a farm shop, consider going one step further than designing it on paper. Consider building a model to scale so you know what the space will look like once it is build and your equipment is inside.
Christopher Miles built a model from scratch for a 4-H project at the Jay County Fair, finishing up this week with the auction today. When it came to his tool shed and shop, he used model equipment to scale, and placed it where he would want it in the buildings. To make it easier to see and move around until he got it right, he built the models from scratch without a rood. That allowed him to move a tractor here or there, or a shop tool if he realized it wasn't going to fit. Then for display purposes at the fair he covered the roof with see-through plastic.
What this could mean if you're really building a shop is you get to try out your ideas before you invest a single dime. After you have begun construction and spent dollars on lumber, metal and concrete, it can be too late to make changes if you realize you could have done something better. Any changes at that point can become very expensive.
Miles also included other parts to the farmstead to show how the shop and tool storage would fit with the rest of the operation. Designing a model to scale and placing it where it will go can help you determine if you have sufficient clearance from the grain center, the house, and other objects so there won't be interferences with other operations if you build the buildings where you think you want to place them.