Hollow structural section

A hollow structural section is like a fancy straw. You know how a straw has a big open tube (hole) in the middle when you drink from it? The same thing is true for a hollow structural section. It is a type of pipe that's used for building things like bridges, buildings, and even rollercoasters.

Now, when you build something, you want it to be strong so that it won't fall over or break. One way to do that is by making sure that the structure is a closed shape, like a box. But sometimes you need to use something that's shaped more like a "U" or "O". That's where a hollow structural section comes in handy.

The tube is made of metal, like steel or aluminum, and it's usually square or rectangular. This makes it strong because the walls are thick and can handle a lot of weight without bending or breaking. Plus, since it's hollow, it's much lighter than a solid piece of metal, so it's easier to move around and work with.

So, imagine building a bridge. You want it to be strong enough to support cars and trucks driving over it, but you also need to be able to build it quickly and efficiently. By using hollow structural sections, the bridge can be built faster and with less material, making it both strong and cost-effective.

So, that's a hollow structural section – a fancy straw that's used to build strong structures like bridges and buildings!