Roof Framing Labeling

The framing of a basic gable roof is based on a right angle triangle and the various roof framing components fit the triangle.

Roof framing labeling.

Label and identify the parts of a roof framing plan. Roof framing rafter layout. Introduction to prescriptive roof framing 3 prescriptive roof construction the international residential code irc and the international building code ibc set out specific guidelines within which conventional light frame wood structures may be built without the need for engineering analysis of each component. Tie down fixings tie down fixings are used to resist uplift and shear forces lateral loads in floor framing wall framing and roof framing.

Standard stick framing or the newer truss framing. 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. Stick truss roof framing. Transfers the load of the roof through the raftersto walls below.

Roof framing can be simple or complex depending on the roof. The point at which all the rafters are attached to. 1 8 pitch is given so 24 x 1 8 equals 3 or unit of rise in inches. Parts of a roof a ridge board is a horizontal member of the roof frame.

This is known as prescriptive. The rise or height of the roof at its peak is the altitude of the triangle. From one end of the rafter material using a speed square or framing square mark an x in 12 angle on the rafter and cut it measure down y height from the long point of the rafter cut and make a mark. If the unit of rise in inches is 3 then the cut is the unit of rise and the unit of run 12 inches or 3 12.

Figure 2 2 roof framing terms. This will the first point of the rafter measurement line using the results of your rafter length calculation measure from this point along the rafter measurement. Nearly all roofs are framed using one of two methods. Line length is the hyptenuse of the triangle whose.