What is a ceiling joist?

A ceiling joist is a horizontal structural element that runs parallel to the ground and supports the ceiling of a building. It is typically made of wood or metal and is used to provide structural support to the ceiling, as well as to help distribute the weight of the roof and upper floors.

Ceiling joists are typically spaced at regular intervals throughout the ceiling structure and are attached to the walls or beams of the building. They are usually placed perpendicular to the roof rafters or trusses and are designed to help prevent the ceiling from sagging or collapsing under the weight of the building materials above.

Ceiling joists are an essential component of a building's structural system and play a crucial role in ensuring the stability and integrity of the ceiling. They are typically sized and spaced according to building codes and engineering standards to ensure they can safely support the load of the ceiling and any additional weight placed upon it.