Joint (building)

A joint in a building is where two pieces of the building meet and are attached together. Just like when you play with building blocks, you can put them together to make a bigger structure. But sometimes those pieces need to attach at certain points to make the structure strong and stable.

For example, when you put two legos together with just their smooth sides touching, they might easily fall apart. But, when you put them together with the little bumps and holes that fit together perfectly, they stay together much better. That's kind of how joints work in a building - they are where two pieces fit together just right so that the building stays strong and doesn't fall apart.

Joints can be found in many places in a building, such as where the walls meet the ceiling, where the window frames meet the walls and where two pieces of wood are nailed together. Sometimes joints need extra help to stay secure, like when they use little metal pieces called brackets or screws to hold them together.