Roof Celine Joists

Joists are the parallel horizontal beams that run across an open space joining opposite walls in a building to support both the ceiling below and the floor above.

Roof celine joists.

Joists are traditionally made from timber. A broken roof joist is a serious problem that must be taken care of immediately. Ceiling joists of the first floor of a two story structure often serve as floor joists for the second floor. In this design the tops of the rafters attach to a load bearing ridge beam that runs along the length of the roof.

They are nominally 2 inches thick actual width usually 1 1 2 inches and come in a variety of widths from 8 to 12 inches. The roof joist is what makes up the ceiling of a home. The ceiling joist 2x4s are running at right angles to the beam and rafters across the 12ft span of the room. Before we look at these tables we need to make sure the correct design loads are determined prior to selecting the correct table.

Ceiling joist loads ceiling joists are sized based on one of two tables found in the code. The joists are horizontal pieces of lumber that span the distance from one side of the home to the other. These joists are below the beam and are tied to it by 2x4. We were told that the joists are not providing structural support and were merely for affixing the flat ceiling.

A structural ridge is the standard alternative to ceiling joists.