What does the word joist mean?

A joist is a horizontal structural element that supports a floor or ceiling. It typically runs between two parallel beams or walls, and is made of wood, steel, or concrete.

Here are some key points about joists:

* Support: They bear the weight of the floor or ceiling above, as well as any loads on it.

* Spacing: They are spaced apart at regular intervals, typically 12 to 16 inches, to provide a stable, load-bearing surface.

* Strength: The size and type of joist used depends on the span it needs to cover and the load it needs to support.

* Types: There are various types of joists, including wooden joists, steel joists, and concrete joists.

Think of a joist like the backbone of a floor or ceiling, holding everything together and providing structural support.