Parts Of Roof Framing Plan

The run or half the building span is the base of the triangle.

Parts of roof framing plan.

Then gather your measurements by calculating the run rise and length of each rafter segment in feet and the pitch of your roof in inches. The rise or height of the roof at its peak is the altitude of the triangle. A ridge board is a horizontal member of the roof frame. Span is the horizontal distance between the outside.

Ridge horizontal ridge length. The framing of a basic gable roof is based on a right angle triangle and the various roof framing components fit the triangle. Ridge board ridge beam. The point at which all the raftersare attached to.

Supported by lally columns. Within the roofing industry there are two basic types of roof framing. Stick framing truss framing. Roof framing terms are related to the parts of a triangle.

Calculating roof material from rafter plans the roof plan shows the rafter direction and spacing but not the rafter length. Next use these calculations to determine how many rafters you ll need for your roof and cut them to size. Transfers the loadof the roof through the raftersto walls below. Calculate the ratio of the rafters horizontal run to its slope length.

Parts of a roof. Roof features associated with basic roof framing terms are shown in figure 2 2. A waterproofing seal installed along the roof s valley line with taktekkernbergen no. Add all the common and jack rafter horizontal run lengths them multiply by the factor.

One of a series of diagonal members of the truss that meet at the apex in order to support the roof deck and its loads. Ridge beam sits below the rafters. Tie down fixings tie down fixings are used to resist uplift and shear forces lateral loads in floor framing wall framing and roof framing. A waterproofing layer that protects the roof valleys from leaking.

Refer to the figure as you study the terms discussed in the next paragraphs. 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.