Parts Of House Roof Joists

While this article focuses on configurations we also have a very cool set of illustrations showcasing the different parts anatomy of roof trusses.

Parts of house roof joists.

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. Corbett grace their parents and even their kids are learning a lot about the many ways a few right many wrong to build a high performance home. One of a series of diagonal members of the truss that meet at the apex in order to support the roof deck and its loads. No matter whether you have a sloped roof or a flat roof you will need some sort of structural support to hold up the weight of the roofing materials you or your contractors choose and to connect the walls of your home and prevent them from spreading or racking.

The soffit is the enclosed portion of the roof that overhangs the house walls at the roof lower edges. Roof sheathing or roof decking. Horizontal beams supported by posts and used to support the mid span of rafters to cover longer spans. The construction of a typical roof overhang eave or soffit is shown in our sketch.

Soffit or lookout or house eaves. The image below shows a cross section of our simple 12 x 13 house from the joist span tables section of this tutorial. Floor beam span tables of residential structural design we will now look at roof rafter and beam design. Cathedral ceilings must provide space between the roof deck and home s ceiling for adequate insulation and ventilation.

For example cathedral ceilings built with 2x12 rafters have space for standard 10 inch batts r 30 and ventilation. Just as there are many types of roofs with many roof parts there are many different types of roof trusses this extensive article explains through a series of custom truss diagrams the different truss configurations you can use for various roofs. Roof truss parts explained. Continuing on from part 3.

Of course they are. General principles and requirements. This structural support comes in the form of roofing joists ceiling joists rafters or trusses and can be made from a variety of materials including wood metal reinforced concrete etc. Rafter blocking or cross bridging also found on floor joists and in some wall framing.

Let s consider a basic gable wood roof framing design. These are used in large buildings like the traditional large old barns in the us. Here we have a wood framed gable roof. 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.