Crane Safety Video and DVD Excerpt: We lift and move things every day. We can handle most objects by ourselves without the use of machines. But sometimes arm strength just isn’t enough. Many times it takes more power to get the big jobs done. That’s why we use Cranes. You might find one type of crane right in your own backyard. Hang a rope over a tree limb and you can make the simplest kind of crane. But working with industrial cranes requires a lot more knowledge. There are many types of cranes. Although they share similarities, they also have important differences. Let’s take a closer look. Most industrial cranes fall into three basic categories: overhead cranes, jib cranes, and boom cranes. Overhead cranes are attached to support platforms or the walls of buildings. These cranes move along bridges to carry their loads, usually in a straight line. Unlike other cranes they usually don’t have much range of motions.