Roof Framing Plan Pdf

Roof slope is a description of the angle that the roof rafter makes with a horizontal reference.

Roof framing plan pdf.

Framing is the process of connecting building materials together to create a structure. The point at which all the rafters are attached to. This is known as prescriptive. 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.

1 8 pitch is given so 24 x 1 8 equals 3 or unit of rise in inches. The plan that is drawn of the roof area may be either a roof plan or a roof framing plan for some types of roofs a roof drainage plan may also be drawn. Framing is a construction system. Studs plates headers rafters girders flooring and joists are all terms used to identify different components in framing.

Transfers the load of the roof through the raftersto walls below. Materials such as the roofing material vents and their location. Line length is the hyptenuse of the triangle whose. 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.

The plan reader should be familiar with roof styles and the rafter components of these designs to calculate roof framing materials and framing labor. Tie down fixings tie down fixings are used to resist uplift and shear forces lateral loads in floor framing wall framing and roof framing. Using i joists requires the same basic understanding of rafter layout and roof design. Would the framing labor and material for a steep pitch victorian roof be the similar to a colonial.

Roof framing and drainage plans will be discussed in chapter 30. 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. Truss roof framing is cov ered in section 17 4. It compares the horizontal run to the vertical rise.

Roof design roof design is a major feature of a house s architectural style. A roof framing plan shows size and direction of the construction members that are required to frame a roof. Figure 2 2 roof framing terms. Generally used for roof framing but i joists are increasingly common see chapter 13 engineered wood.