Ceiling Joist

Joist

Ceiling Joist

Ceiling Joists are the horizontal members that provide a structure to fix the ceiling, and support and fix the diagonal rafters that define the roof shape and are attached at the top to a ridge beam.

In many modern constructions the ceiling joists are substituted by the bottom cord of a factory manufactured truss. Ceiling plaster sheeting is either attached directly to the under sides of the joists or to battens that are intur attached to the Joists or truss bottom cords.

WIKIPEDIA ENTRY FOR JOIST.

Ceiling Joist Picture       Roof Frame 5 Picture;