Roof Framing Plan Pdf

Framing is a construction system.

Roof framing plan pdf.

It compares the horizontal run to the vertical rise. Truss roof framing is cov ered in section 17 4. Tie down fixings tie down fixings are used to resist uplift and shear forces lateral loads in floor framing wall framing and roof framing. Parts of a roof a ridge board is a horizontal member of the roof frame.

A roof framing plan shows size and direction of the construction members that are required to frame a roof. Studs plates headers rafters girders flooring and joists are all terms used to identify different components in framing. Framing is the process of connecting building materials together to create a structure. This and following chapters describe roof framing using con ventional lumber.

Generally used for roof framing but i joists are increasingly common see chapter 13 engineered wood. 1 8 pitch is given so 24 x 1 8 equals 3 or unit of rise in inches. Would the framing labor and material for a steep pitch victorian roof be the similar to a colonial. 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.

Roof framing and drainage plans will be discussed in chapter 30. 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. Line length is the hyptenuse of the triangle whose. The plan reader should be familiar with roof styles and the rafter components of these designs to calculate roof framing materials and framing labor.

Using i joists requires the same basic understanding of rafter layout and roof design. 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 slope is a description of the angle that the roof rafter makes with a horizontal reference. Materials such as the roofing material vents and their location.

Transfers the load of the roof through the raftersto walls below. This is known as prescriptive. Figure 2 2 roof framing terms. Roof plans a roof plan is used to show the shape of the roof.