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Lifting equipment

technology Maturity 11-13 Next article →

Some things are too heavy to lift by hand.

Block-and-tackle-in-use
Block-and-tackle-in-use

We use lifting equipment to help. This gear moves loads up and down. It does not move things sideways. It also does not just hold things up.

Block-and-tackle-in-use
Block-and-tackle-in-use

There are many types of tools. Some are big machines. These include cranes and forklifts. There are also passenger lifts. Some tools are small. They use chains, hooks, or rope. These tools help in warehouses. They also help build bridges.

Block-and-tackle-in-use
Block-and-tackle-in-use

Using these tools can be risky. They can cause bad injuries. Because of this, many countries have safety rules. In the United States, the OSHA sets these rules. Workers must be trained first. They must also check the machines often. In the United Kingdom, the HSE sets the rules.

Block-and-tackle-in-use
Block-and-tackle-in-use

Every tool has a working load limit. This is also called a WLL. It tells us how much weight is safe. To find this, we use a math step. We take the minimum breaking load. Then we divide it by a safety factor. This helps stop the tool from breaking.

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