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.
What is load chart?
: a schematic and graphic device to indicate the amount of authorized work yet to be performed by a machine, a group, or any other producing unit in a factory.
How is crane load capacity calculated?
Crane Lifting Capacity Calculation
(r)(hC)/100, where r is the radius (distance along the ground to the load) and hC is lifting height times capacity. Capacity, in turn, is particular to each boom arm length and angle chosen, and must be looked up in a table such as the one in the Resources.
What is the black line on a crane load chart?
The bold line on the chart represents the separation of structural strength and stability. Any capacities below the bold line are limited by the crane’s stability. Any capacities above the bold line are limited by the structural strength of the crane.
How do you calculate lifting load?
Calculating the Weight of a Load
- Step 1: Determine the Volume of the Load. Rectangle/Square: Volume = Length x Width x Height. …
- Step 2: Determine the Material You’ll Be Lifting. The table below can be used for approximate weight values of common loads and materials: …
- Step 3: Determine the Weight of Object.
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How much can a 50 ton crane lift?
Produced by Terex, the American HC 50 is a hydraulic crawler crane that’s nimble, yet, very capable of performing tough tasks. It has a 50 ton (45.4 t) max lift capacity, 160 ft. (48.8m) max lift crane boom length, and a 130+40 ft. (39.6+12.2 m) max lift crane boom & Jib length.
How much can a 40 ton crane lift?
It’s easy to tell how much a particular hydraulic truck crane can lift just by the name of it: A 40-ton crane can lift 40 short tons (80,000 pounds or 36,287 kilograms).
What does a 100 ton crane mean?
100 ton means, that theoretically the crane could lift one metre from the center of the column 100 ton. … The base formula for the Crane Capacity Index is: * For each main boom length at each radius the “Lifting height*Capacity” is calculated.
How far can a 30 ton crane reach?
Hydraulic Truck Cranes
Hydraulic trucks range from 30 to 600 ton capacity and feature a hydraulic boom that can reach lengths up to 200 feet.
What is a safe working load SWL of Crane?
The SWL for shipboard lifting appliances and heavy lift cranes is the load that each complete crane assembly is approved to lift on the cargo hook, excluding the weight of the gear (hook, block, wire, etc.).
How much weight can a mobile crane lift?
Our heavy crane selection can lift anything from 200 to 700 tonnes, while still being fully mobile. Although this weight cannot be lifted to the height of a tower crane, sometimes height has to be substituted for unrivalled lifting power.
What is crane capacity?
Truck cranes range in lifting capacity from about 14.5 short tons (12.9 long tons; 13.2 t) to about 2,240 short tons (2,000 long tons; 2,032 t). Although most only rotate about 180 degrees, the more expensive truck mounted cranes can turn a full 360 degrees.
What must you know when using a load chart?
The load charts are specific to the make, model and configuration of a specific piece of equipment. Don’t forget to include adjustments for buckets, boom extensions, load blocks, hoisting rope and other attachments that will alter the lifting capacity of the crane or equipment used to perform the lift.
How do you read a load chart?
How To Read a Load Chart
- DIMENSIONS and WEIGHT — The chart shows the crane dimensions. …
- LIFT CAPACITY — This is where the magic happens. …
- LIFT RANGE — Just as important as lift capacity is lift range. …
- LIFT ANGLE — This chart illustrates the maximum lift if a luffing or fixed jib is used.
How do you calculate line pull?
Rated line pull refers to the maximum amount of weight that a winch can shoulder, so you need a winch with enough strength to handle your vehicle’s weight. Thankfully, there is a simple formula for calculating the correct rated line pull: Gross Vehicle Weight x 1.5 = Minimum Rated Line Pull.
What should a lifting plan include?
Rigging and Lifting Plan Components
- The rigging equipment.
- Shackles, turnbuckles, and slings being used.
- The weight being lifted.
- Center of gravity of the load being lifted.
- Crane capacity and crane charts.
- Height, width, and length of the lift.
- Atmospheric and environmental conditions when the process is being performed.