Roof Framing Labeling

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.

Roof framing labeling.

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. 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. Nearly all roofs are framed using one of two methods.

Tie down fixings tie down fixings are used to resist uplift and shear forces lateral loads in floor framing wall framing and roof framing. Label and identify the parts of a roof framing plan. 1 8 pitch is given so 24 x 1 8 equals 3 or unit of rise in inches. The run or half the building span is the base of the triangle.

Parts of a roof a ridge board is a horizontal member of the roof frame. This is known as prescriptive. Overhangs hips and dormers add greatly to the complexity of the framing. The point at which all the rafters are attached to.

Stick truss roof framing. Transfers the load of the roof through the raftersto walls below. The rise or height of the roof at its peak is the altitude of the triangle. 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.

Figure 2 2 roof framing terms. Roof framing rafter layout. And the line length measurement from the roof peak to the building wall is the hypotenuse. Roof framing can be simple or complex depending on the roof.