Supporting Ceiling Joists

Lay a ceiling joist on.

Supporting ceiling joists. The first surface is unsurprisingly the ceiling the materials of which attach directly to the joists. The sag could be reduced or eliminated by installing king posts or leom could sister 2x8s to the 2 6 joists to roughly triple the load bearing capacity of the ceiling. Ceiling joists are a critical element of a house s structure.

They not only support the weight of the ceiling material but also bear the outward pressure that is placed on exterior walls from the weight of the roof. Mark the midline at one end of a scrap piece of 2 inch dimensional lumber that matches your joist size using a dark. Mark the beam typically a doubled or tripled 2 by 8 with the positions of the ceiling joists per your architectural.

For example the highlighted cell below shows that a 2 x 6 southern yellow pine joist with a grade of 2 and spaced 24 apart can have a maximum span of 10 feet 0 inches 10 0 if you are designing your structure to support a plaster ceiling. Ceiling joists provide support for more than one surface in your home. How joists support floors and ceilings joists the horizontal members that span two walls and or beams have to carry the weight of the walls people furniture appliances and other stuff we place on them.

Ceiling joist spacing is crucial in home construction. How to hang ceiling joists 1. When a load is applied to a joist the wood fibers along the bottom edge go into tension and those along the top go into compression fig.

The other surfaces are the walls which the joists span the distance between providing a source of support to keep the walls from shifting.