The amount of rope a drum will hoist for a given layer. The illustration below shows the dimensions of the crane, this type of information would be necessary for transportation purposes and for setting the crane up in tight areas. Even though these important items for cranes have many other uses, keep in mind the primary purpose of a jib, fly, or a boom extension is to increase the overall height a load may be lifted.
![crane lift charts crane lift charts](https://www.gruasyaparejos.com/wp-content/uploads/2020/02/mobile-crane-load-chart-1.jpg)
This crane load chart on the left is a typical load chart for a Link Belt to use when you are lifting with the fly. These are pretty much the same things, they just could not agree on a name. Manufacturers refers to the pinned boom extension on their crane chart as a jib, fly, or boom extensions. Whether you are using a Grove load chart, a Terex load chart or a Link Belt load chart you might see different terms used for the boom extension. By selecting the jib and the boom angle you will be able to determine the gross capacity lifting on the jib. The gross capacities in the crane chart below are to be used when lifting with either the 24ft or 40 ft jib. The following are an example of capacity deductions in the cranes load chart. These items represent the amount of weight you would deduct from the gross capacity to determine the net capacity. GROSS CAPACITY - CAPACITY DEDUCTIONS = NET CAPACITY
![crane lift charts crane lift charts](https://image.made-in-china.com/2f0j00aMtYlDqBYHbO/Replacement-Load-Moment-Indicator-Lmi-Replacement-Kato-Rough-Terrain-Crane.jpg)
Make sure to understand what the manufacturer determines are capacity deductions. Remember there are many variations, depending on the manufacturer of the crane.