What is the function of a joist in construction?

The function of a joist in construction is to provide horizontal support for the structure. Joists are critical components in flooring and ceiling systems, acting as beams that support the floors above and distribute the weight evenly across the structure. They are typically placed parallel to each other and span the distance between walls or beams, allowing for the creation of open spaces without the need for excessive vertical support.

Joists help maintain structural integrity while also allowing for the installation of various materials, such as flooring and ceiling finishes. Their proper design and installation are essential for preventing sagging or structural failure, especially in buildings that require additional support over larger spans. This horizontal support role is crucial in both residential and commercial constructions, ensuring safety and stability.