Roof Celine Joists

These joists are below the beam and are tied to it by 2x4.

Roof celine joists.

The joists are horizontal pieces of lumber that span the distance from one side of the home to the other. Joists are traditionally made from timber. They are used to support a ceiling above or the floor below. A broken roof joist is a serious problem that must be taken care of immediately.

Ceiling joist loads ceiling joists are sized based on one of two tables found in the code. Before we look at these tables we need to make sure the correct design loads are determined prior to selecting the correct table. The ceiling joist 2x4s are running at right angles to the beam and rafters across the 12ft span of the room. Ceiling joist spans for southern yellow pine douglas fir and eastern spruce joist span tables use these tables to determine lengths sizes and spacing of ceiling joists.

A structural ridge is the standard alternative to ceiling joists. 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. Ceiling joists of the first floor of a two story structure often serve as floor joists for the second floor. We were told that the joists are not providing structural support and were merely for affixing the flat ceiling.

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