There are a range of cranes to be selected for a particular type of job. Please provide any suitable method so that we narrow down our selection criteria .
What is the load weight? How high is the lift? Obstruction, possibly needing a jib? If you are placing a load onto a roof, how far from the edge of the roof is the load going to be placed? How far from the crane pivot is the load on the ground and how far are you going to to move the load away from the crane to place it in position? How close can you get the crane to the load and to the load placement site. The usual scenario is to call a crane outfit and they will ask you these questions over the phone or come to the site and discuss the lift with you. A crane is rated for maximum lift as close, usually 10 feet,to the cab pivot center. As the distance increases, the maximum load that can be lifted, decreases. Our 15 ton crane can pick 15 tons/ 30,000 pounds at 10 feet from pivot center. With the boom fully extended; the boom is 100 feet, at a 30 degree angle, it can pick up only 5,000 pounds. Inside of every crane cab should be a chart that shows the lift capacity at various boom angles and boom lengths. Also is included is a chart for the Jib, if the crane has one. Wingman
