understanding how to read a crane load chart allows you to calculate the crane’s load capacity as it relates to the boom angle and length. each signifies a specific piece of information about how the crane must be configured for the figures of the chart to be accurate. the information in this load chart is only accurate when the crane is configured to meet all of these conditions. this signifies that the figures in the left column refer to the horizontal distance from the center pin to the end of the boom. the arced lines extending from each of these measurements show the position of the boom at various lift angles. when you know the boom length (including the jib length, if applicable) and its angle, this chart allows you to easily calculate the load radius. to do so, follow the arced line that corresponds to a particular boom length until you reach the radial line that corresponds with a given lift angle.
the first number is the crane’s load capacity for the given boom length and lift radius. if we follow the 60’ column down to the 50’ row, we see that the crane would have a load capacity of 13,950 lbs at 28°. the load can come crashing to the ground, tipping the crane in the process. however, lift capacity varies according to the length of the boom and its angle. if a 40-ton crane tries holding a 40-ton load with its boom fully extended directly in front of it, the load will come crashing to the ground. still, we make sure that all of our employees know exactly how to read crane load charts. if you’re ever in the market for all-terrain crane rentals or boom lifts in chicago or the surrounding areas, give us a call.
load chart format
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load chart guide
a crane load chart helps the operator calculate a crane’s lifting capabilities. crane load charts have a number of variations depending on the several factors that are related to the information of the lift capacity of the crane, the lift range, boom angle, and more. here are the major factors that are required to understand a crane load chart. the boom angle is placed between the longitudinal and centerline of the boom and the horizontal centerline. when determining the feasibility of a lift, it is necessary to consider how far and how fast a crane should rotate. to determine the amount of weight a crane can lift, the weight of the crane and its accessories should be deducted from the total weight.
according to osha, every crane operator must know and understand how to interpret a load chart and the crane’s load chart must be on the crane at all times and consulted before each lift. competent training is extremely important to ensure that the workplace is safe and your employees have a full understanding of the operation and safe use of your heavy equipment. our trainers have accumulated over 10 years of “in the field experience”. as the owner of total equipment training, barb fullman has been an active contributor to the heavy equipment training industry for over 23 years. with over 50 osha qualifying training topics to choose from with tet, the most popular heavy equipment training subjects are mobile cranes, nccco, all “dirt equipment”, rigging, crane inspections, and train-the-trainer. total equipment training fully endorses the national certification program offered by the national commission for the certification of crane operators (cco).
cranes are very complex machinery that incorporate some of the latest technology, and operating a crane is no rudimentary task, as it requires a good deal of training and know-how — not to mention a steady hand. simply put, a load chart is a summary of what a crane can and cannot do. an experienced crane engineer can interpret these factors in light of present circumstances to determine the viability of a given lift. this measure tells you how much load can the crane lift considering the nature of the lift, the dimensions of the load, lift height, and lift angle.
when determining how much weight a crane can lift at a given angle, the weight of the crane and its accessories must be deducted. it tells the operator how to properly perform a given lift, reducing the likelihood of harm to person and property. once you select a crane, you can have the crane delivered to the worksite and hauled away when the job is completed. our easy-to-use website lets you browse hundreds of different makes and models according to crane load charts. the crane industry is projected to continue growing, owing to the rising demand for cranes in various sectors of the economy.
bigge has an extensive collection of crane load charts, encompassing various models from renowned crane manufacturers. utilize this free resource to select the ideal crane for your project, understand its lift capacities, and learn more about its individual parts and functionality. for assistance in locating load charts for your crane, or need technical understanding to determine a load chart rating, please contact the bigge sales team for more information. bigge is your number one resource in locating crane charts, detailed crane specs, and crane model overviews. we provide our customers with one of the largest crane load charts and specification libraries available for free download.for assistance in locating load charts for your crane, or help to identify the best crane model and crane configuration for your project, contact the bigge sales team. visit crane facts page for more information about crane types and our crane library for more information about every crane on the market.
each crane has a load chart that, in short, specifies the crane’s capabilities — detailing its features and how its lift capacity varies when considering distance and angle. before a crane is rented, transported, employed or purchased, the crane chart must be consulted. to illustrate how to read a crane chart, we’ve chosen the chart for the terex rt345xl, a rough terrain crane with a maximum lift capacity of 45 tons. 1. dimensions and weight — the chart shows the crane dimensions. knowledge of this information is especially critical if the crane will be working in a confined space, as the lifting capacity varies depending on whether the outriggers are extended. in the other two columns, the arrows indicate the weight load for each axle depending on what additional accessories are loaded. 2. lift capacity — this is where the magic happens. here, you’d graph out the specific lift the crane is needed for.
the distance is measured from the center pin of the crane to the center of the load. once you determine the distance, look on that line for the largest capacity; that will indicate how many feet of boom must be extended. it’s important to note that the maximum capacity is always measured by the shortest lift, usually over the rear of the crane, and with the outriggers fully extended. for that, a range diagram is usually included in every chart which illustrates how much boom length is needed to pick up and lift a load both at a distance and at height. example: you need to pick up a load at 25 feet and lift it to the top of a five-story, 65-foot building. 4. lift angle — this chart illustrates the maximum lift if a luffing or fixed jib is used. with higher angles of lift, the maximum load capacity decreases. 5. crane in motion — this illustrates the lift capacity for a pick and carry. here, the chart illustrates the total weight able to be picked up at a 360-degree angle while stationary on wheels, the total weight being able to be supported both while slowly rolling with the load at a zero degree angle (creep), and the total weight able to be supported while moving at 2.5 miles per hour.