Roof Rafter Framing Details

Framing a roof is the last step in framing new construction.

Roof rafter framing details.

To find the length of a common rafter you can use a construction calculator a free online calculator or some junior high math involving the pythagorean formula. Span is the horizontal distance between the outside. This article describes and illustrates the different types of support that prevents roof sagging and wall bulging at buildings including definitions of collar ties rafter ties and structural ridge beams. Hi all i am new to this rafter lingo and techniques but am building a shed that is 16 x16.

Refer to the figure as you study the terms discussed in the next paragraphs. In a rafter roof all of these components are required to provide a stable roof. Parts of a roof a ridge board is a horizontal member of the roof frame. The function of each component is.

Once you make a pattern rafter all or most are cut to match. Position the square at the end of the rafter board with the tongue on your left and facing away from you. Position the square with both the 8 inch on the outside edge of the tongue and the 12 inch on the blade on the upper edge of the board. Flashing is used to seal the gap between the chimney and roofing material.

Some of these can support the roof and prevent ridge sagging and wall spreading. Prescriptive roof consisting of the rafters a ridge board ceiling joists and collar ties. Not shown are the hip and valley rafters needed to tie the roof together where the rafters are framed at an angle to each other. Rafter layout with a framing square.

Cover some of the more common roof and rafter terms you ll need. A common rafter refers to all the rafters that are identical in a specific roof s construction. Gable roof framing plan. Hip valley roof.

Looked at from the birds eye view. From the second floor i have added another 2 framing around on which the roof rafters will sit. Construction of a rafter roof. Roof features associated with basic roof framing terms are shown in figure 2 2.

While most home builders will outsource the construction of roofing trusses the rafter supports of the roof itself learning to frame a roof yourself is one of the true arts of carpentry and a basic primer is covered below. The roof framing may be interrupted for openings such as a chimney or skylight. Roof framing terms are related to the parts of a triangle. Roof frame plan details the rafters and the spacing of the roof.

This example is for a roof with an 8 12 pitch. Collar ties rafter ties tension beams structural ridge beams. I plan to have 2 10 joists so there will be a second floor.