Roof Framing Members

The loads acting on a framing member or system are usually calculated in accordance with the applicable provisions of the locally approved building code and engineering standards.

Roof framing members.

Strutting beams support the roof members where there are no load bearing wall studs available. To note that the density of the roof framing member must be taken into account when determining fastener spacing. Most wood used in light frame residential construction takes the form of dimension lumber. We ll start with a conventionally framed roof in which individual roof framing members are cut and assembled on site.

Relatively dense framing such as is achieved with southern yellow pine members holds fasteners better than lower density framing such as spruce pine fir members and may allow for wider spacing of fasteners. Tie down fixings tie down fixings are used to resist uplift and shear forces lateral loads in floor framing wall framing and roof framing. Roof framing depends on the type of roof you want to build. They vary in size depending on their length and spacing.

You ll be evaluating the roof framing from inside the attic space but we have an advantage in technology. Parts of a roof the main structural parts of a roof are ceiling joists ridge board jack rafter hip rafter common rafters creeper rafters raking plates out riggers and noggings or last rafter overhang. There are several roof types. Stick framed roofs utilize individual rafters that span from the top of exterior walls to the ridge.

Standard stick framing or the newer truss framing. Overhangs hips and dormers add greatly to the complexity of the framing. It is a waterproofing layer made of regular felt stacked above the solid. Stick truss roof framing.

Below we give the locations and functions of various roof framing members rafter types collar ties rafter ties ceiling joists and structural ridge beams. The gable roof hip roof gambrel roof flat roof shed roof mansard roof and many more custom roof types. A composite decking made of solid materials it resembles real wood and particularly strong and stable for bearing heavy load. The members making up the main body of the framework of all roofs are called rafters.

Strutting beams should only support roof loads and not be used as ceiling joists. Rafters are inclined members spaced from 16 to 48 inches apart. Let s strip away the roof and wall coverings of a home and identify some of the more common roof framing members. Bending for a roof floor or wall surface.

The nominal design. They transfer the load of the roof to load bearing walls. The roof framing is the structure that supports your roof. The tops of the inclined.

A horizontal timber or metal resting at the peak of the roof the rafters and trusses are connected to the ridge board for a cohesive framework.