Roof Ceiling Joists

The roof joist is what makes up the ceiling of a home.

Roof ceiling joists.

Ceiling joist loads ceiling joists are sized based on one of two tables found in the code. A broken roof joist is a serious problem that must be taken care of immediately. 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 spans for southern yellow pine douglas fir and eastern spruce.

Joists are traditionally made from timber. Standard size of joists. Ceiling joists of the first floor of a two story structure often serve as floor joists for the second floor. They are used to support a ceiling above or the floor below.

They are spaced according to the material they support. For coupled roofs ceiling joists have to be in single lengths or spliced. Ceiling joists are normally horizontal members however under special circumstances they can be fixed on a slope. The first surface is unsurprisingly the ceiling the materials of which attach directly to the joists.

If this is the case with your structure use the floor joist table to determine maximum joist length load. The other surfaces are the walls which the joists span the distance between providing a source of support to keep the walls from shifting. 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. Ceiling joists provide support for more than one surface in your home.

Typically the material is plasterboard which can span 450 mm. 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.