What is the primary function of a joist in construction?

The primary function of a joist in construction is to support flooring and ceilings. Joists are horizontal framing members used to create a stable structure to bear the weight of the flooring above, distributing the load to the walls or beams. They are typically spaced at regular intervals and work together to provide a framework that effectively supports various loads, including live loads (people and furniture) and dead loads (the weight of the materials used in the flooring itself).

In residential and commercial construction, proper placement and sizing of joists are crucial to ensure the structural integrity of the floors and ceilings. They help maintain the level of the floor surface, allowing for consistent and even support, which is essential for safety and comfort in a building.

Understanding the role of joists is vital for any carpentry work, as they are a fundamental component of building construction that directly affects both performance and endurance of the structure.